WO2014110845A1

WO2014110845A1 - Apparatus of combined grinding resource treatment system for construction waste residues, and using method thereof

Info

Publication number: WO2014110845A1
Application number: PCT/CN2013/071156
Authority: WO
Inventors: 王珊珊; 黄海; 李昌; 陈建华; 崔北研; 王�华; 张同; 成川
Original assignee: 上海国砼环保设备有限公司
Priority date: 2013-01-17
Filing date: 2013-01-30
Publication date: 2014-07-24
Also published as: CN103102090A; CN103102090B

Abstract

Disclosed is an apparatus of a combined grinding resource treatment system for construction waste residues, which comprises an input feeding machine (1), a regenerated sandstone grinding machine (2), a joint sorting device, and a regenerated powder grinding machine (4), which are sequentially arranged. Also disclosed is a using method of the apparatus of a combined grinding resource treatment system for construction waste residues, wherein a process of firstly sorting and then grinding is adopted, namely, regenerated coarse aggregate or regenerated fine aggregate is sorted from a regenerated mixture after coarse grinding, and residual coarse and fine powder is reground. The grindability is good, and because the coarse grinding and fine grinding both belong to "non-ball grinding", the comprehensive power consumption of treatment and grinding of construction waste residues is low, and the comprehensive power consumption per ton is 8 to 12 kwh/t.

Description

Device for building waste residue combined grinding resource processing system and using method thereof

The invention relates to the technical field of comprehensive utilization of resources, in particular to a device for using a construction waste residue combined grinding resource processing system and a using method thereof. Background technique

The construction waste residue is the remaining material after the brick-concrete construction garbage or concrete construction garbage has been harmlessly treated, that is, after the house, the structure is demolished, the construction waste is stripped of metal, combustibles, mud and other mixed materials, the remaining waste concrete, waste sintered clay Waste materials such as bricks, waste ceramics, and waste glass, referred to as "built slag". It is called slag construction, which corresponds to slag, steel slag and industrial waste residue, and conforms to the popular expression method of “residue slag” for comprehensive utilization of building materials industry. The building waste after the harmless treatment of construction waste has the characteristics of mineralized waste residue and belongs to the category of silicon-aluminum materials. The so-called cement-based building materials comprehensively use construction waste, which essentially refers to the comprehensive utilization of construction waste.

The climatic conditions, resource conditions, construction habits, economic development level, etc. of each country are different. The building structure and building-oriented materials are different. The construction waste components are not the same. The construction waste treatment equipment, treatment methods, and recycling direction are not the same. Do the same. In the past, China's houses were dominated by brick-concrete structures. Other countries have brick-and-wood structures, masonry structures, wooden structures, or concrete structures. No developed industrial waste treatment equipment in the world is fully adapted to the requirements of China's brick and concrete construction waste disposal. Mobile crushing stations in developed countries are generally suitable for field operations, suitable for the disposal of waste road construction waste, belonging to the construction waste coarse processing equipment, and the process dust and noise pollution are large.

China's construction waste is roughly divided into two categories, namely brick-concrete construction waste and concrete construction waste. The overall situation is that large and medium-sized cities in China have begun to discharge concrete construction waste, but far from brick-concrete structures, the amount of garbage is large. China's construction waste is characterized by a mixture of raw meal and clinker. The natural sand in the concrete belongs to the raw material, and the cement and sintered brick belong to the sintered clinker. Cement stone is also called hardened body. The pulp hardened body refers to the hardened cement slurry, which is a heterogeneous body composed of gel, unhydrated cement particle core, capillary pores and the like. Cement stone grinding into recycled fine powder is suitable for use as cement-based building materials admixture, with micro-aggregate effect, which is conducive to saving cement. Sintered brick belongs to the category of burnt clay. Calcined clay is the legal raw material of cement mixture. The sintered brick is ground into regenerated micro-powder, which has the effect of volcanic ash and micro-aggregate. It is used as cement-based building material admixture, which is conducive to saving cement.

The so-called recycling of construction waste resources means recycling construction waste into cement-based building materials. There are three types of cement-based building materials: coarse aggregate, fine aggregate and fine powder, different particle sizes, different material properties, and broken ground. The law is different. The goal of comprehensive utilization of construction waste is to make the best use of it, that is, to give full play to the role of different construction waste slag. The recycling of construction waste is to treat construction waste into recycled coarse aggregate, recycled fine aggregate and recycled fine powder. Raw materials in construction waste, such as natural sand, suitable for the production of coarse and fine aggregates, clinker in construction waste, cement stone and clay bricks, suitable for the production of recycled fine powder, or broken bricks suitable for regenerating ceramic sand. Clinker in the cement-based building materials industry refers to sintered silica-alumina materials such as limestone and clay, which have high added value. The re-generating micro-powder in the construction waste residue not only has high added value, but also has high enterprise income, and its energy conservation, emission reduction and resource conservation are more significant. China's cement industry is an unsustainable industry. China's academic circles generally believe that China's limestone reserves are only enough for the cement industry to be used for less than 50 years. At the same time, cement clinker production is high energy consumption and high pollution. Therefore, the comprehensive utilization of sintered silicon-aluminum powder materials to partially replace cement or cement clinker is the development direction of cement-based building materials in the world.

At present, China generally follows the method of smashing and smashing and breaking sand and gravel to deal with construction waste. This kind of treatment is basically in the category of rough treatment. The following technical defects exist: 1. High energy consumption and low efficiency. Counter-attack is a category of particle impact and breakage. Sintered bricks and cement stone particles are lighter, lack kinetic energy, and have low impact crushing efficiency. Usually, the crushing construction waste is counter-attacked, and the crushing function is reduced by 30-40%, that is, 60-70% of the designed production capacity is broken; 2. The cement stone is not cleanly peeled off. Counter-breaking and breaking, it is impact crushing, counter-crushing, less grinding function, the stone is still wrapped with cement stone, and the recycled coarse aggregate is more flake; 3, basically no productized treatment. The recycled coarse aggregate contains wood chips and the recycled fine aggregate contains soil. Recycled materials coarsely processed from sand and gravel crushing lines are often only used as road substrate materials or low-end brick materials.

The greening of cement-based building materials in China is the trend of the times. There is an increasing shortage of urban building materials. How to realize the productized treatment of construction waste, the recycled materials can be widely used by various cement-based building materials and high value-added utilization, and determine the vitality of the market-oriented development of the construction of waste recycling industry.

Combined grinding is a combination of grinding and grinding. The traditional combined grinding of the building materials industry is a combination of two rotating high pressure roller presses and a ball mill. The high pressure roller press is coarsely ground and the ball mill is finely ground. The combined grinding device is a production device for producing cement powder materials. . If it is used to treat construction waste, there are the following defects: (1) Recycled fine aggregates are not good in particle size. The traditional high-pressure roller press plus ball mill is combined with grinding, the purpose of which is to achieve more crushing and less grinding of cement production. Therefore, there is no requirement for the granular shape of the recycled material coarsely ground by the high-pressure roller press, and the particle size is small and the productivity of the ball mill is improved. The regenerated fine aggregates pressed out by the high-pressure roller press are not good in granular shape, and have many flakes and cracks. The use of sand as a dry mortar is insufficient. (2) The recycled powder has high energy consumption. The ball mill is a high-energy-consuming device. The ball mill is a random grinding of grinding media. The industry recognizes that the ball mill pulverization utilization rate is less than 5%, and more than 95% is converted into vibration energy and heat energy. (3) Great investment. High-pressure roller press plus ball mill has a large investment in traditional combined grinding. Usually cement production equipment invests 600,000-800,000 tons/ton of cement. In the traditional building materials industry, powders and aggregates are usually produced separately. That is, slag powder or cement enterprises usually do not produce aggregates. Sand and gravel aggregate production enterprises do not produce powders, and there is no powder production equipment configuration. Due to the outstanding characteristics of brick-concrete building waste residue and concrete slag mixture, there are both sandstone and clinker clay bricks and cement stone. In order to give full play to the different slag properties, the separation of raw and cooked materials can be realized. It is the development direction of high added value reuse of construction waste. This also shows that the realization of China's construction waste residue recycling and reuse requires technological innovation.

According to the patent literature search, there are no related documents and methods related to the construction of recycled aggregates and recycled powders. Summary of the invention

The primary object of the present invention is to overcome the deficiencies of the existing construction waste treatment technology and equipment, thereby providing a device for constructing a waste residue combined grinding resource processing system and a method of using the same.

The device for the construction waste residue combined grinding resource processing system of the invention comprises an input feeder, a reclaimed sand stone mill, a joint sorting device and a regenerative powder mill which are sequentially arranged.

The construction waste slag combined grinding resource processing system device further comprises a hatch bin, the second bin import of the hatch bin corresponds to the exit of the joint sorting device, and the first bin import of the hatch bin corresponds to the construction waste, the carcass The two bin outlets of the bin correspond to the regenerative powder mill.

The combined grinding of the coarse grinding of the reclaimed sand mill and the fine grinding of the regenerated powder mill realizes the combined production of the recycled aggregate and the regenerated fine powder.

The reclaimed sand stone mill is a grinding device in which the moving grinding body is tapered, and the grinding device is an eccentric cone pulverizer or a conical suspension roller mill.

The grinding equipment of the invention belongs to the pulverizing equipment of the moving mill cone-shaped rotor extrusion layer group, and the grinding equipment is used for smashing the construction waste slag mixture material, and the extrusion and grinding process features are prominent, and the selective pulverization phenomenon is prominent. High-strength gravel bricks with low grinding strength, cement stone particles, broken bricks, cement stone and recycled fine powder are recovered, and gravel is produced from recycled coarse aggregate and recycled fine aggregate.

The eccentric cone pulverizer is a standard eccentric cone pulverizer or a short head eccentric cone pulverizer. When producing recycled coarse aggregate, recycled coarse sand and regenerated fine powder, and mainly producing recycled coarse aggregate, a standard eccentric cone crusher is selected.

When producing reclaimed coarse sand, regenerated fine sand and regenerated fine powder, and mainly producing recycled coarse sand, a short-head type eccentric cone crusher is selected. When producing recycled coarse sand, recycled fine sand and regenerated fine powder, and mainly producing recycled fine sand and recycled fine powder, a conical suspension roll mill is selected.

The standard eccentric cone pulverizer is combined with the regenerative powder mill to achieve the combined production of three major recycled materials: reclaimed coarse aggregate, recycled coarse sand and regenerated fine powder.

The short-head eccentric cone pulverizer is combined with the regenerative powder mill to achieve the combined production of three major reclaimed materials: reclaimed coarse sand, regenerated fine sand and regenerated fine powder.

The conical suspension roller mill is combined with the regenerative powder mill to achieve the combined production of three reclaimed materials: reclaimed coarse sand, reclaimed fine sand and regenerated fine powder.

The regenerated powder mill is a vertical disc roll mill or a vertical suspension roll mill.

The upper part of the regenerated powder mill is provided with a micro-powder.

The joint sorting device comprises a connected screening machine and a wind sorting machine, the inlet of the screening machine corresponds to the outlet of the reclaimed sand stone mill, and the outlet of the air sorting machine corresponds to the second bin inlet of the hatch bin.

The screening machine is a plane vibrating screen or a drum screen, and the function of the screening machine is to sort out the regenerated coarse mixture, the recycled coarse aggregate and the recycled coarse sand.

The screen pore size of the screening machine is determined by the particle size of the material to be screened.

The air sorting machine is a classifier or a sand powder classifier, and the function of the air sorter is to sort out the regenerated fine sand and the regenerated fine powder.

The construction waste slag combined grinding resource treatment system device further includes a dust collector, and the dust collector is respectively connected to the sifter and the fine powder pulverizer on the upper portion of the regenerated powder mill. When the dust collector is working, the corresponding pipeline is formed with a negative pressure for absorbing the regenerated fine powder.

The external device of the construction waste residue combined grinding resource treatment system is a steel structure, and the steel structure is externally provided with a metal composite plate to form a closed dustproof and noise prevention device.

The electric hoist is installed on the upper part of the steel structure and is used for equipment maintenance and hoisting.

The construction waste residue of the invention is a construction waste residue such as concrete, sintered brick, waste ceramics and waste glass after the construction waste is harmlessly treated, and the light flammable materials such as metal materials and wood blocks in the construction waste are removed.

The construction waste residue of the invention is lifted by the input bucket elevator and then poured into the transition silo, and then enters the input feeder from the transition silo, and the input feeder continuously feeds the regenerated sand grinder, and the reclaimed sand grinder The conical rotor is ground and pulverized, and the construction waste is smashed. Due to the extrusion and grinding of the construction waste slag layer, the selective pulverization phenomenon occurs, and the clinker with lower strength is pulverized into fine particles, and the raw material with high strength is Smash into recycled coarse aggregate, recycled coarse sand and reclaimed fine sand, and realize the required recovery of finished recycled materials through joint sorting equipment; The non-finished recycled material pulverized and ground by the reclaimed sand stone grinder of the present invention, the non-finished reclaimed material is mixed with the construction waste slag, and respectively enters the hatch bin by the sorting bucket elevator and the feeding hopper hoist, the double compartment material The silo has a homogenization function, which mixes the non-finished recycled materials with the construction waste residue mixture into the regenerated powder mill for grinding, and the regenerated powder mill crushes the mixed material layer to produce selective pulverization phenomenon, high strength material and particle size. The large material with low grinding strength and the small particle size promote the regeneration of coarse sand and regenerated fine sand to produce regenerated micropowder. The regenerated micropowder is recovered by the micro-powder in the upper part of the regenerated powder mill, and the remaining hard-grown recycled coarse sand and The mixture of the regenerated fine sand is discharged and recovered through the slag discharge port at the lower portion of the regenerated powder mill.

The invention can realize the combined production of the three reclaimed materials of the regenerated coarse aggregate, the regenerated fine aggregate and the regenerated fine powder, or the combined production of the regenerated fine aggregate and the regenerated fine powder. The material layer of the invention is extruded, milled, sheared and ground, and the cement is peeled off, and the recycled coarse and fine aggregate is spherical, the granular shape is good, and the recycled fine powder is mostly broken brick and cement stone.

The method for using the device of the construction waste residue combined grinding resource processing system of the present invention is as follows: Step 1: Feeding: Construction waste is passed through the belt after the harmless treatment of the building waste having a particle diameter of 50 mm or more and 80 mm or less The conveyor or loader feeds the hopper of the input bucket elevator, inputs the bucket elevator to lift, and dumps the construction waste into the transition silo; the outlet of the transition silo corresponds to the inlet of the input feeder, and the input feeder is oriented Recycled sand mill for continuous feeding;

Step 2: Rough grinding: The reclaimed sand mill grinds and crushes the construction waste residue, the recycled sand stone mill laminating and smashing the construction waste residue, and the selective crushing phenomenon occurs. The raw material is ground into recycled coarse aggregate, recycled coarse sand and Regenerating fine sand, clinker ground into recycled fine powder;

Step 3: Sorting: The screening machine is equipped with 25mm, 5mm and 2mm three-layer sieves, respectively filtering out the regenerated coarse mixture with the particle size of 25mm or more, the particle size of 5mm or more and less than 25mm, and the particle size is 2mm or more. Regenerated coarse sand less than 5mm, regenerated sand powder mixture with particle size less than 2mm; air sorting machine sorting regenerated fine powder with particle size less than 0.08mm from recycled sand powder mixture with particle size less than 2mm, the remaining particle size is greater than or equal to 0.08 and less than 2mm reclaimed fine sand, according to actual needs, recover one or several kinds of recycled materials, and send the rest of the recycled materials to the regenerative powder mill;

Step 4: Fine grinding: The coarsely ground recycled material and the construction waste residue, which are not recovered as recycled materials, are respectively ground into the regenerated powder mill through the hatch bin to produce selective pulverization phenomenon, and the high-strength raw material has low grinding strength. The raw material becomes a grinding medium, and the clinker is cooked to promote the clinker to be ground into a regenerated fine powder. The regenerated fine powder is recovered by a micro-powder in the upper part of the regenerated powder mill, and the remaining mixture of the reclaimed coarse sand and the regenerated fine sand is regenerated. The slag discharge port at the lower part of the powder mill is discharged and recovered.

In the second step, when it is required to produce recycled coarse aggregate, recycled coarse sand and regenerated fine powder, and to produce recycled coarse powder When the aggregate is mainly used, when the reclaimed sand mill uses a standard eccentric cone pulverizer, the discharge opening of the standard eccentric cone pulverizer is adjusted, and the diameter of the coarsely ground recycled material is greater than or equal to 5 mm, accounting for about 50%. The particle size is less than 5mm, and the recycled coarse sand, regenerated fine sand and regenerated fine powder account for about 50%; among them, the regenerated fine powder with particle diameter less than 0.08mm accounts for about 5%.

When it is required to produce recycled coarse sand, regenerated fine sand and regenerated fine powder, and mainly produces recycled coarse sand, the recycled sand stone mill selects a short head type eccentric cone crusher, and a short head type eccentric cone crusher discharge port Smaller, coarsely ground recycled material with a particle size of 2mm or more, accounting for about 40%, less than 2mm recycled fine sand and recycled fine powder, accounting for about 60%, of which less than 0.08mm recycled fine powder, accounting for about 10%.

When it is necessary to produce recycled coarse sand, regenerated fine sand and regenerated fine powder, and mainly produce recycled fine sand and recycled fine powder, the recycled sand stone mill adopts conical suspension roller mill, and the cone suspension roller mill presses the force adjustment. Small, coarsely ground recycled materials with a particle size of 2mm or more and less than 5mm, accounting for about 30%, and recycled sand powder with a particle size of less than 2mm, accounting for about 70%, of which the particle size is less than 0.08mm. Micronized powder, accounting for about 20%;

When it is necessary to produce recycled coarse sand, regenerated fine sand and regenerated fine powder, and mainly produce recycled fine powder, the pressing force of the conical suspension roll mill is increased, and the particle size of the coarsely ground recycled material is 2 mm or more and less than 5 mm. Reclaimed coarse sand, accounting for about 20%, recycled sand powder mixture with particle size less than 2mm, accounting for about 80%, of which less than 0.08mm recycled fine powder, accounting for about 30%.

In the third step, when the concrete production enterprise needs to regenerate the coarse aggregate, the reclaimed coarse sand and the regenerated fine powder, directly recover the recycled coarse aggregate having a particle diameter of 5 mm or more and less than 25 mm, the recycled coarse sand having a particle diameter of 2 mm or more and less than 5 mm. Recycled fine powder having a particle diameter of less than 0.08 mm, other regenerated coarse mixed materials having a particle diameter of 25 mm or more, and a regenerated fine sand having a particle diameter of 0.08 or more and less than 2 mm, which are ground into a regenerated powder mill;

When dry mortar, block and brick production enterprises do not need to regenerate coarse aggregate, directly recover recycled coarse sand with particle size greater than or equal to 2mm and less than 5mm, particle size greater than or equal to 0.08 and less than 2mm recycled fine sand and particle size less than 0.08mm. Other coarse aggregates with a particle size of 25 mm or more and a particle size of 5 mm or more and less than 25 mm are recycled into the regenerated fine powder.

The raw meal is natural sand.

The clinker is cement stone and sintered brick.

The combined grinding, rough grinding and fine grinding of the invention belong to the laminating pulverization, and the clinker and the raw material in the construction waste slag are fully utilized, so that the strength is poor, so that the selective pulverization phenomenon occurs, and the cement stone and the sintered brick with low strength are first crushed. , through sorting, to achieve separation of raw and cooked, classification and recycling.

The combined grinding system device and method thereof of the present invention are characterized in that the grinding and the grinding are selected, that is, the powder production is "first" After the selection of the grinding, it is conducive to the realization of the construction waste slag raw materials and clinker classification and recycling, classification and utilization. The traditional cement industry used high-pressure roller press plus ball mill combined grinding and its use, is the grinding plus grinding, is The whole grinding powder is produced by grinding twice, and the combined grinding system device and method of the invention are to produce recycled coarse aggregate, recycled fine aggregate and regenerated fine powder. The cement combined grinding only produces one kind of material - regenerated fine powder, The combined grinding of the present invention produces two types of materials - recycled aggregates and recycled fines.

The method of the invention belongs to the first-selective post-grinding process, that is, the regenerated mixed material after coarse grinding, and the fine powder is re-grinded after sorting out the regenerated coarse aggregate or reclaiming the fine aggregate, and the grindability is good, and the coarse grinding is combined. Fine grinding belongs to "ballless grinding". The comprehensive waste energy consumption of construction waste treatment and grinding is low, and the comprehensive energy consumption is between 8-12kwh/t. The ball mill is ground by a grinding medium "grinding ball" and is randomly ground. It is recognized in the industry that ball mills are high-energy-consuming devices with less than 5% pulverization efficiency. The reclaimed sand stone mill and the regenerative micro-grinding mill of this scheme belong to the "ballless grinding", which is mandatory for crushing and grinding, and the energy efficiency utilization rate of the pulverizing function is up to 40%. Compared with the micro-powder, it is 50-100% energy-saving than the conventional high-pressure roller press plus ball mill. Moreover, the traditional high-pressure roller press plus ball mill is combined with grinding, and does not have the combined production functions of three kinds of recycled materials: recycled coarse aggregate, recycled sand and recycled fine powder.

The beneficial effects of the invention are:

1, cement stone stripped clean

The lamination pulverization technology is more in line with the requirements of the construction waste slag mixture processing characteristics than the particle collision pulverization technology. The construction waste mixture is a mixture of raw meal and clinker. The cone mill belongs to the lamination pulverization, that is, the crushing of the material layer extrusion group, and the counter-breaking is a particle collision pulverization. Recycling of waste concrete in construction waste, the main purpose of which is to remove the cement stone wrapped outside the natural sandstone to produce recycled coarse aggregate and recycled fine aggregate. Laminating and pulverizing technology, its selective pulverization phenomenon is prominent, natural sandstone and cement stone have poor strength. When crushed and pulverized, the cement stone is first crushed and pulverized, and the crushed material layer is pressed by the rotating moving cone. , grinding, forming shear pulverization, natural sand as a grinding medium shearing, grinding cement stone, promote cement stone, broken brick particles into fine particles, natural sand itself grinding into a spherical shape.

2, in line with the requirements of brick and concrete construction slag treatment characteristics

The laminating and pulverizing technology is also particularly suitable for the smashing and regenerating treatment of brick mixing slag The sintered brick particles are lighter and lack kinetic energy. The impact crusher such as counter-breaking and sand-making machine has low impact efficiency. When the material layer is crushed and pulverized, it is easy to achieve the pulverization of the sintered brick. Cone mill and vertical mill, its selective pulverization phenomenon is prominent, extrusion pulverized brick mixed slag, natural sand stone and sintered brick, cement stone have poor strength, when crushed and pulverized, cement stone is first crushed and crushed, broken After the material layer is pressed and rotated by the rotating moving cone to form shear pulverization, the natural sand stone becomes the grinding medium to cut and grind the cement stone, and the cement stone and the broken brick particles are ground into fine particles, natural sand and gravel. It is ground into a spherical shape. 3, deal with the company's adaptability

The combined grinding system device and the using method of the invention not only fully exert the effects of different construction waste slag materials, but also can treat different kinds of construction waste slag. Whether it is a concrete building waste or a brick-concrete waste, the technical solution of the present invention can be handled. Eccentric cone crusher, the size of the discharge opening can be adjusted, it can easily produce various particle size recycled materials; Conical suspension roll mill, the extrusion force can be adjusted, it can easily produce various kinds of recycled coarse sand, It regenerates fine sand and has the function of regenerating micropowder production; this greatly promotes the recycling of construction waste resources and reuses enterprises to adapt to market capabilities. The reclaimed micropowder is divided into fine powder and ultrafine powder. Usually, the construction waste residue treatment enterprise produces less than 0.08mm recycled fine powder to meet the basic requirements of the admixture. The recycled coarse and fine aggregates are various, different kinds of mortar, different kinds of concrete, and the thickness Aggregates have different particle size requirements. According to the solution of the present invention, the recycled material has a wide coverage.

The solution of the invention is advantageous for adapting to market changes. The closed loop of this scheme can only produce regenerated fine powder; the open loop can produce three kinds of recycled materials or two kinds of recycled materials.

The vertical grinding adaptability of this scheme is strong. The final grinding of this program chooses vertical grinding. The vertical reclaimed powder mill has a wide range of feed particles with a particle size range of 30 mm or more and 50 mm or less. This greatly reduces the difficulty of the joint production material balance. At the same time, it enters the vertical mill material, which belongs to the mixture material. There is selective pulverization. Usually, the cement stone and broken brick are ground into fine powder and recovered from the upper micro-powder machine. The more difficult to grind particles are recycled fine aggregates.

4, low energy consumption

"Ballless grinding" energy saving, material layer extrusion grinding energy saving. Laminating smashing is a group smashing, and counterattacking is a particle collision pulverization. Since the construction waste is a mixture material, the clinker particles are lighter and softer, and the particles are collided and crushed by counter-attacking and breaking, and the work is ineffective. The counter-shocking and sand-making machine is suitable for pulverizing single material and high-density materials. The high-density material has large kinetic energy, and the particle impact crushing effect is good. The construction waste is a mixture material, the quality is light, the eccentric cone crusher presses the material and grinds it, and compares it with the counter-attack, which is 30-40% more energy-efficient than the counter-shocking construction waste.

"Select first and then grind" energy saving. The regenerated micropowder production of this scheme belongs to the first-selection post-grinding process, that is, the reclaimed mixed material after coarse grinding, and the residual coarse powder is selected after reclaiming the coarse aggregate or the regenerated fine aggregate by the air sorting machine, and the grindability is good. , grinding energy consumption is low.

5, the recycled material has good particle size

The cone mill is laminated and pulverized, and the crushed material is rotated, sheared and ground in the grinding chamber, and the edges and corners are worn away. Therefore, the recycled coarse aggregate and the recycled fine aggregate are mostly spherical and easy to flow.

6, material balance is easy to master

The three major reclaimed materials of recycled coarse aggregate, recycled fine aggregate and regenerated fine powder are jointly produced, and material balance is a difficult point. The cone grinding of the scheme can realize the adjustment of the particle size of the recycled material through the adjustment of the size of the discharge opening and the adjustment of the pressing force, and the capacity adjustment can be realized, and the balance of the production materials of the three major recycled materials can be easily realized.

Other types of crushers, usually the grinding cavity is certain, the output is also certain. The composition of construction waste is subject to change, and the crushing efficiency is also variable. Therefore, it is difficult to jointly produce and balance the materials of the three major recycled materials. The adjustments described in this solution are all electric and material balance can be easily achieved.

7. Dealing with the economic benefits of the enterprise

The technical solution of the invention not only fully exerts the role of the mature material in the construction waste mixture, but also the market value of the recycled micro powder is far greater than that of the recycled aggregate. At present, the application technology of waste slag powder in the country is mature, and with the development of fine building materials, the market price of siliceous aluminum powder materials in most large and medium-sized cities nationwide exceeds 100 yuan. Moreover, with the adjustment of energy structure in large and medium-sized cities in China, the new energy is gradually popularized and coal transportation is changed to coal-electricity transmission. Urban cement industry, slag powder enterprises, and cement-based building materials enterprises all need silicon-aluminum powder materials.

8, environmental treatment

The technical solution of the invention is a dual environmental protection measure to achieve environmentally friendly production. After rough grinding, material sorting and roller compaction are all negative pressure production, and the recycled regenerated fine powder enters the dust collector through the pipeline; at the same time, the whole production system is a three-dimensional closed module device, and the whole module is equipped with a dust collector to form a negative Pressing, dust goes in without overflowing; the sandwich material of the metal composite plate for sealing is a sound insulation material, and the metal composite plate is closed, which avoids dust overflow and has sound insulation function. Therefore, the technical solution of the present invention adapts to the technical transformation of the concrete, mortar, and wall material enterprises in large and medium-sized cities to implement the construction waste recycling treatment and reuse project to meet environmental protection requirements. DRAWINGS

Fig. 1 is a schematic structural view of an embodiment. detailed description

In the present invention, the recycled coarse mixture is a recycled mixture having a particle diameter of 25 mm.

In the present invention, the regenerated coarse aggregate is a regenerated mixture having a particle size of 5 mm of <25 mm, and the regenerated coarse aggregate is a material for the skeleton of the building.

In the present invention, the regenerated fine aggregate includes reclaimed coarse sand and regenerated fine sand, and the regenerated fine aggregate can replace part of natural sand.

In the present invention, the regenerated coarse sand is a recycled mixture having a 2 mm particle size of <5 mm. In the present invention, the regenerated fine sand is a recycled mixture having a particle size of <2 mm of 0.08 mm.

In the present invention, the regenerated fine powder is a regenerated mixture having a particle size of <0.08 ₁ 11 ₁ 11 . Recycled micropowder can replace part of the cement. Example 1, construction waste residue preparation

Construction waste is the construction waste after the construction waste has been harmlessly treated, stripped of metal, light combustibles and dirt.

The preparation of the construction waste residue of the scheme adopts the first harmless treatment and the post-stacking, which is beneficial to the drying of the broken construction waste residue, and the stacking process is the homogenization process; usually the concrete construction waste residue and the brick-concrete construction waste residue are stacked and stacked, or may be mixed and stacked. .

A rainproof shed is arranged on the upper part of the construction waste slag yard. One of the construction waste slag yards is the closed workshop for the construction of construction waste. The construction waste is harmlessly treated in the closed workshop, a large hopper is set up, the construction garbage transport vehicle enters the workshop, the construction waste is introduced into the large hopper, the feeder is set in the lower part of the large hopper, and the feeder is facing the feed port of the coarse broken construction waste crushing station. The vibrating feeder realizes the continuous feeding of construction waste, thereby realizing the harmless continuous treatment of construction waste. The preparation of the preferred construction waste residue of the scheme adopts the device and method for the construction waste combined crushing harmless treatment system. Embodiment 2. Device for tower type three-dimensional construction waste residue combined grinding resource processing system

As shown in FIG. 1 , the device of the construction waste residue combined grinding resource processing system of the present embodiment is a tower type three-dimensional structure, and the embodiment includes an input feeder 1 and a regenerated sand mill 2 which are sequentially arranged, and the joint sorting. Equipment and regenerative powder mill 4.

The embodiment further includes an input bucket elevator 5, a sorting bucket elevator 6, a feeding bucket elevator 7, a transition silo 8 and a two compartment silo 9, an input bucket elevator 5 and a feeding bucket elevator Ί The inlets respectively correspond to the construction waste, and the input of the bucket elevator 5, the transition silo 8 and the input feeder 1 are sequentially arranged, the outlet of the regenerated sand mill 2, the joint sorting device and the sorting bucket elevator 6 sequentially, the outlets of the hopper elevator and the bucket elevator 6 correspond to the inlets of the first and second bins of the hatch bin 9, respectively, and the outlets of the first and second bins correspond to the fine grinding At the inlet of the feeder 10, the outlet of the fine grinding feeder 10 corresponds to the inlet of the regenerated powder mill 4.

The construction waste slag combined grinding resource processing system device further includes a hatch bin 9, the second bin inlet of the hatch bin 9 corresponding to the outlet of the joint sorting device, and the first bin inlet of the hatch bin 9 Corresponding to the construction waste, the outlets of the two bins of the hatch bin 9 correspond to the regenerated powder mill 4.

The combined grinding of the coarse grinding of the reclaimed sand mill 2 and the fine grinding of the regenerated powder mill 4 realizes the regenerated bone Combined production of materials and recycled fines.

The reclaimed sand mill 2 is a grinding device in which the moving body is tapered, and the grinding device is an eccentric cone pulverizer or a conical suspension roller mill.

When producing reclaimed coarse sand, reclaimed fine sand and regenerated fine powder, and mainly producing recycled coarse sand, a short-head type eccentric cone crusher is selected.

When producing recycled coarse sand, recycled fine sand and regenerated fine powder, and mainly producing recycled fine sand and recycled fine powder, a conical suspension roll mill is selected.

The standard eccentric cone pulverizer and the regenerative powder mill 4 are combined with grinding to realize the combined production of three kinds of recycled materials: regenerated coarse aggregate, regenerated coarse sand and regenerated fine powder.

The short-head eccentric cone pulverizer and the regenerative powder mill 4 are combined with grinding to realize the combined production of three kinds of recycled materials: reclaimed coarse sand, reclaimed fine sand and regenerated fine powder.

The conical suspension roller mill and the regenerative powder mill 4 are combined with grinding to realize the combined production of three reclaimed materials: reclaimed coarse sand, regenerated fine sand and regenerated fine powder.

The regenerated powder mill 4 is a vertical disc roll mill or a vertical suspension roll mill.

The fine powder machine 11 is provided on the upper portion of the regenerated powder mill 4.

The joint sorting device includes a connected screening machine 31 and a wind sorter 32. The inlet of the screening machine 31 corresponds to the outlet of the reclaimed sand mill 2, the outlet of the air sorter 32 and the second bin inlet of the hatch bin 9. correspond.

The screening machine 31 is a flat vibratory screening machine or a drum screening machine, and the screening machine 31 functions to regenerate coarse aggregate and regenerate coarse sand.

The screen aperture of the screening machine 31 is determined by the particle size of the material to be screened.

The air sorting machine 32 is a classifier or a sand powder classifier, and the function of the air sorter 32 is to sort the regenerated fine aggregate and the regenerated fine powder.

The construction waste residue combined grinding resource processing system device further comprises a dust collector 12, the dust collector 12 points It is not connected to the sifter and the fine powder pulverizer 11 on the upper part of the regenerated powder mill 4. When the dust collector 12 is in operation, the corresponding pipeline is formed with a negative pressure for absorbing the regenerated fine powder.

The construction waste residue of the present invention is lifted by the input bucket elevator 5 and then poured into the transition silo 8, and then enters the input feeder 1 from the transition silo 8, and the input feeder 1 continuously feeds the regenerated sand mill 2, The conical rotor of the reclaimed sand mill 2 is laminated and pulverized, and the construction waste is smashed. Due to the extrusion and grinding of the construction waste slag layer, the selective pulverization phenomenon occurs, and the clinker with lower strength is pulverized into fine granules. The high-strength raw material is pulverized into recycled coarse aggregate, recycled coarse sand and regenerated fine sand, and the required recycled material recovery is realized by the joint sorting equipment; the recycled sand mill 2 of the present invention is pulverized and ground. The non-finished recycled material, the non-finished recycled material is mixed with the construction waste residue, and enters the hatch bin 9 through the sorting bucket elevator 6 and the feeding hopper elevator respectively, and the hatch bin 9 has a homogenizing function, so that The finished recycled material is mixed with the construction waste mixture into the regenerated powder mill 4, and the regenerated powder mill 4 crushes the mixed material layer to produce selective pulverization, high strength materials and particle size. The material with low grinding strength and the material with small particle size promotes the regeneration of coarse sand and regenerated fine sand to produce regenerated micropowder, and the regenerated micropowder is recovered by the micro-powder 11 in the upper part of the regenerated powder mill 4, and the remaining hard-grown reclaimed coarse sand The mixture with the regenerated fine sand is discharged and recovered through the slag discharge port at the lower portion of the regenerated powder mill 4.

The invention can realize the combined production of the three reclaimed materials of the regenerated coarse aggregate, the regenerated fine aggregate and the regenerated fine powder, or the combined production of the regenerated fine aggregate and the regenerated fine powder. The material layer of the invention is extruded, milled, sheared and ground, and the cement is peeled off, and the recycled coarse and fine aggregate is spherical, the granular shape is good, and the recycled fine powder is mostly broken brick and cement stone. Embodiment 3 Process flow of a device for a tower-type three-dimensional building waste residue combined grinding resource processing system

As shown in Fig. 1, the construction waste that has been harmlessly treated is lifted by the input bucket elevator 5, poured into the transition silo 8, and then enters the input feeder 1 from the transition silo 8, and the input feeder 1 is regenerated. The gravel mill 2 is continuously fed, the reclaimed sand mill 2 coarsely grinds and smashes the construction waste residue, laminating and pulverizing, and grinding the construction waste residue. The recycled material processed by the regenerated sand stone mill 2 enters the joint sorting equipment to realize the regeneration coarse Mixing, reclaiming coarse aggregate and reclaimed coarse sand classification, as well as sorting of reclaimed fine sand and regenerated fine powder, according to actual needs, recovering one or several kinds of finished materials of recycled materials, the remaining one or several The particle size regeneration material enters the box material through the sorting bucket elevator In the second bin of the bin 9, the first bin of the hatch bin 9 is the construction waste conveyed by the feeding bucket elevator 7, and the hatch bin 9 homogenizes the mixture therein, wherein the mixture is finely ground. The material machine 10 is fed into the regenerative powder mill 4; the regenerated mixture is ground, the regenerated powder mill 4 is crushed clinker and the raw material mixture to produce selective pulverization, and the high-strength raw material has low grinding strength. The raw material becomes a grinding medium, and the clinker is cooked to promote the clinker to be ground into a regenerated fine powder. The regenerated fine powder is recovered by the micro-powder 11 in the upper part of the regenerated powder mill 4, and the remaining hard-grown reclaimed coarse sand and regenerated fine sand pass. The slag discharge port at the lower portion of the regenerated powder mill 4 is discharged and recovered.

In this embodiment, the three major reclaimed materials of regenerated coarse aggregate, regenerated coarse sand and regenerated fine powder can be jointly produced, or the regenerated fine sand and the regenerated micropowder can be jointly produced. The invention can grind bricks and cement stones into fine particles and natural sandstone. Grinding into a spherical regenerated coarse and fine aggregate, the product produced by the present invention has a good granularity.

The height of this embodiment is 15-20 meters, the width is 10-15 meters, and the length is 20-35 meters. Example 4: The method of using the equipment of the construction waste residue combined grinding resource treatment system realizes the joint production of three kinds of recycled materials, and is mainly used for comprehensive utilization of slag construction by concrete enterprises.

In this embodiment, the particle size of the reclaimed coarse aggregate to be recovered is 5 mm, the particle size is <25 mm, the particle size of the recovered reclaimed coarse sand is 2 mm, the particle size is < 5 mm, and the particle size of the recovered regenerated fine powder is the particle size. < 0.08mm.

As shown in Fig. 1, the apparatus for constructing slag of the construction waste slag combined with the grinding resource processing system of the present embodiment has the following specific steps:

Step 1: Feeding: The construction waste that has been treated by the harmless treatment with a particle size of 50mm or more and 60mm or less is fed by the belt conveyor or the loader to the input bucket elevator 5, and the input bucket elevator 5 is lifted. The construction waste is poured into the transition silo 8; the outlet of the transition silo 8 corresponds to the inlet of the input feeder 1, and the input feeder 1 is continuously fed to the regenerated sand mill 2;

Step 2: Rough grinding: The reclaimed sand stone mill 2 adopts a standard eccentric cone pulverizer, a standard eccentric cone pulverizer coarsely pulverizes the building waste residue, and the standard eccentric cone pulverizer laminates the pulverized and honed construction waste residue to produce selectivity. The pulverization phenomenon, the raw material is ground into recycled coarse aggregate, recycled coarse sand and regenerated fine sand, and the clinker is ground into regenerated fine powder; Step 3: Sorting: The screening machine 31 is equipped with 25mm, 5mm and 2mm three-layer sieves, respectively sieving the particles Recycled coarse mix with diameter greater than or equal to 25mm, recycled coarse aggregate with particle size greater than or equal to 5mm and less than 25mm, recycled coarse sand with particle size greater than or equal to 2mm and less than 5mm, recycled sand powder with particle size less than 2mm; air separator 32 from grain The reclaimed sand powder mixture having a diameter of less than 2 mm is selected to have a regenerated fine powder having a particle diameter of less than 0.08 mm, and the remaining regenerated fine sand having a particle diameter of 0.08 or more and less than 2 mm; Directly recovering recycled coarse aggregates with a particle size of 5 mm or more and less than 25 mm, a particle size of 2 mm or more and less than 5 mm, a regenerated coarse sand and a regenerated fine powder having a particle diameter of less than 0.08 mm, and other regenerated coarse mixed materials having a particle diameter of 25 mm or more, and a particle diameter larger than The regenerated fine sand equal to 0.08 and less than 2 mm enters the regenerative powder mill 4 to be ground; Step 4: Fine grinding: the coarsely ground recycled material and the construction waste residue, which are not recovered as recovered, enter the regenerated powder mill through the hatch bin 9 respectively. Grinding, the hatch bin 9 has a homogenizing function, and the mixture in the hatch bin 9 is ground by the fine grinder 10 into the reclaimed powder mill 4, and the regenerated powder mill 4 is compacted to produce a mixture. Smashing phenomenon, high-strength clinker with low grinding strength, raw material becomes grinding medium, clinking clinker, clinker is ground to regenerate fine powder, and regenerated micropowder is passed through the fine powder machine of the upper part of reclaimed powder mill 4 The recovered regenerated coarse sand and the regenerated fine sand are discharged and recovered through the slag discharge port at the lower portion of the regenerated powder mill 4.

According to the embodiment, the concrete enterprise comprehensively utilizes the three types of reclaimed fine powder, recycled coarse sand and recycled coarse aggregate, and the recycled fine powder partially replaces cement or fly ash, and the recycled coarse aggregate and recycled coarse sand replace the natural aggregate, which can produce each Green concrete, reducing costs. Example 5: The method of using the equipment of the construction waste residue combined grinding resource processing system realizes the joint production of three kinds of recycled materials, and is mainly used for comprehensive utilization of slag construction by dry powder mortar enterprises and cement substrate bricks.

The difference between this embodiment and the embodiment 4 is that the particle size of the regenerated coarse sand to be recovered in this embodiment is 2 mm, the particle size is <5 mm, and the particle size of the regenerated fine sand is 0.08 mm, the particle size is <2 mm, and the recycled regenerated powder is recovered. The particle size is <0.08 mm.

In the embodiment, the rough grinding device selects a short-head type eccentric cone pulverizer or a tapered suspension roller mill.

In the third step, the recycled coarse sand having a particle diameter of 2 mm or more and less than 5 mm is directly recovered, the regenerated fine sand having a particle diameter of 0.08 or more and less than 2 mm, and the regenerated fine powder having a particle diameter of less than 0.08 mm are recovered as a finished product, and more than 5 mm of the recycled material enters the next process. It is ground by a regenerative powder mill 4.

In this embodiment, the dry mortar or slab brick enterprise is implemented, comprehensively utilizing recycled coarse sand, reclaimed fine sand and reclaimed fine powder, the regenerated fine powder partially replaces cement or fly ash, and the recycled coarse sand and reclaimed fine sand partially replace natural fine aggregate to produce dry powder. Mortar, slab brick, reduce cost, and high strength in the later stage of the product. Example 6. The method of using the equipment of the construction waste residue combined grinding resource treatment system realizes the joint production of three kinds of recycled materials, and is mainly used for comprehensive utilization of construction waste residue in the urban cement industry grinding station.

The difference between this embodiment and the embodiment 5 is that the present embodiment mainly focuses on the recovery of the regenerated fine powder, taking into consideration the recovery of the reclaimed coarse sand and the regenerated fine sand.

In this embodiment, the rough grinding apparatus selects a conical suspension roll mill. In the third step, the regenerative mixture having a particle diameter of less than 2 mm in the screening machine 31 is sorted into the air sorting machine 32, and the regenerated fine powder having a particle diameter of less than 0.08 mm is recovered as a finished product, and the particle size is greater than or equal to 0.08 mm and less than 2 mm of regenerated fine sand and particle size. Reclaimed coarse sand of 2 mm or more and less than 5 mm can be directly sold to the supply market, or can be ground by the regenerated powder mill 4 in the next process.

In the embodiment, the conical suspension roll mill has a prominent function of shearing coarse grinding and grinding, and the powder output is large. The grinding station is implemented in accordance with this embodiment, and the regenerated fine powder is used for the production of cement, and the reclaimed coarse sand and reclaimed fine sand are sold for profit.

Claims

claims

1. A device for a combined grinding and resource processing system for construction waste residue, which is characterized by including an input feeder, a regenerated sand and gravel mill, a combined sorting equipment and a regenerated powder mill that are arranged in sequence.

2. The device of the construction waste residue combined grinding and resource processing system according to claim 1, characterized in that it also includes two compartments of silos, the second compartment inlet of the two compartments of silos corresponds to the outlet of the joint sorting equipment, and the two compartments of materials The first warehouse inlet corresponds to the construction waste residue, and the two warehouse exits of the two-compartment silo correspond to the recycled powder mill.

3. The device of the combined grinding and resource utilization treatment system for construction waste residue according to claim 1, characterized in that, the regenerated sand and stone mill is a grinding equipment with a cone-shaped movable grinding body, and the grinding equipment is Eccentric cone crusher or conical suspension roller mill.

4. The device of the construction waste residue combined grinding and resource utilization processing system according to claim 1, characterized in that the regenerated powder mill is a vertical disc roller mill or a vertical suspension roller mill.

5. The device of the construction waste residue combined grinding and resource utilization processing system according to claim 1, characterized in that a micron powder selector is provided on the upper part of the regenerated powder mill.

6. The device of the combined grinding and recycling treatment system for construction waste residue according to claim 1, characterized in that the combined sorting equipment includes a screening machine and an air separator connected, and the inlet of the screening machine is connected to the regenerated sand and stone grinding machine. The outlet of the air separator corresponds to the outlet of the air separator, and the outlet of the air separator corresponds to the inlet of the second compartment of the two-compartment silo.

7. The device of the construction waste residue combined grinding and resource utilization processing system according to claim 6, characterized in that the screening machine is a plane vibrating screening machine or a drum screening machine.

8. The device of the construction waste residue combined grinding and resource utilization processing system according to claim 6, characterized in that the sieve aperture of the screening machine is determined according to the particle size of the materials to be screened.

9. The device of the construction waste residue combined grinding and resource utilization processing system according to claim 6, characterized in that the air separator is a powder separator or a sand powder classifier.

10. A method of using the device of a construction waste residue combined grinding and resource recycling system, which is characterized by the following steps:

Step 1. Feeding: The harmlessly treated construction waste with a particle size of greater than or equal to 50mm and less than or equal to 80mm is fed to the hopper of the bucket elevator through a belt conveyor or loader, and the bucket elevator lifts it. The construction waste residue is poured into the transition bin; the outlet of the transition bin corresponds to the inlet of the input feeder, which continuously feeds the recycled sand and gravel mill;

Step 2. Coarse grinding: The recycled sand and stone mill coarsely grinds and crushes the construction waste residue. The recycled sand and stone mill laminated and grinds the construction waste residue to produce selective crushing. The raw material is ground into recycled coarse aggregate, recycled coarse sand and Regenerated fine sand and clinker are ground into recycled fine powder;

Step 3. Sorting: The screening machine is equipped with three-layer sieves of 25mm, 5mm and 2mm to screen out recycled coarse mixture with a particle size greater than or equal to 25mm, recycled coarse aggregate with a particle size greater than or equal to 5mm and less than 25mm, and recycled coarse aggregate with a particle size greater than or equal to 2mm and Regenerated coarse sand with a particle size less than 5mm and recycled sand powder mixture with a particle size less than 2mm; the air separator separates the recycled sand powder mixture with a particle size less than 2mm and regenerated fine powder with a particle size less than 0.08mm, and the rest is a particle size greater than or equal to 0.08 and less than 2mm recycled fine sand, according to actual needs, recover recycled materials of one or several particle sizes, and send the remaining recycled materials to the recycled powder mill;

Step 4. Fine grinding: The recycled materials and construction waste that are not recycled are coarsely ground and enter the regenerated powder mill for grinding through the two-chamber silo respectively, resulting in selective crushing. The raw materials with high intensity are ground into the cooked materials with low intensity. The raw material becomes the grinding medium, and the clinker is ground, causing the clinker to be ground into regenerated fine powder. The regenerated fine powder is recovered through the micron selector on the upper part of the regenerated powder mill, and the remaining mixture of regenerated coarse sand and regenerated fine sand is regenerated. The slag discharge port at the bottom of the powder mill discharges and recovers.