CN114559545B - Device and process for preparing magnetized water UHPC - Google Patents
Device and process for preparing magnetized water UHPC Download PDFInfo
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- CN114559545B CN114559545B CN202210191546.4A CN202210191546A CN114559545B CN 114559545 B CN114559545 B CN 114559545B CN 202210191546 A CN202210191546 A CN 202210191546A CN 114559545 B CN114559545 B CN 114559545B
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- 239000011374 ultra-high-performance concrete Substances 0.000 title claims abstract description 63
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 title claims abstract description 45
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 11
- 239000000919 ceramic Substances 0.000 claims abstract description 120
- 238000007789 sealing Methods 0.000 claims abstract description 64
- NLYAJNPCOHFWQQ-UHFFFAOYSA-N kaolin Chemical compound O.O.O=[Al]O[Si](=O)O[Si](=O)O[Al]=O NLYAJNPCOHFWQQ-UHFFFAOYSA-N 0.000 claims abstract description 56
- 238000000227 grinding Methods 0.000 claims abstract description 51
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims abstract description 48
- 239000005995 Aluminium silicate Substances 0.000 claims abstract description 41
- 235000012211 aluminium silicate Nutrition 0.000 claims abstract description 41
- 239000002994 raw material Substances 0.000 claims abstract description 37
- 239000004927 clay Substances 0.000 claims abstract description 33
- 238000003756 stirring Methods 0.000 claims abstract description 32
- 229910052742 iron Inorganic materials 0.000 claims abstract description 24
- 239000000203 mixture Substances 0.000 claims abstract description 21
- 238000002156 mixing Methods 0.000 claims abstract description 15
- 230000009471 action Effects 0.000 claims abstract description 5
- 238000011049 filling Methods 0.000 claims abstract description 5
- 229910000831 Steel Inorganic materials 0.000 claims description 17
- 239000003638 chemical reducing agent Substances 0.000 claims description 17
- 239000010959 steel Substances 0.000 claims description 17
- 229920005646 polycarboxylate Polymers 0.000 claims description 8
- GCLGEJMYGQKIIW-UHFFFAOYSA-H sodium hexametaphosphate Chemical compound [Na]OP1(=O)OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])OP(=O)(O[Na])O1 GCLGEJMYGQKIIW-UHFFFAOYSA-H 0.000 claims description 8
- 235000019982 sodium hexametaphosphate Nutrition 0.000 claims description 8
- 239000001577 tetrasodium phosphonato phosphate Substances 0.000 claims description 8
- 239000011398 Portland cement Substances 0.000 claims description 7
- 239000006004 Quartz sand Substances 0.000 claims description 7
- VYPSYNLAJGMNEJ-UHFFFAOYSA-N Silicium dioxide Chemical compound O=[Si]=O VYPSYNLAJGMNEJ-UHFFFAOYSA-N 0.000 claims description 7
- 239000000843 powder Substances 0.000 claims description 7
- 229910021487 silica fume Inorganic materials 0.000 claims description 7
- 239000002245 particle Substances 0.000 claims description 6
- 238000000034 method Methods 0.000 claims description 4
- 229910004298 SiO 2 Inorganic materials 0.000 claims description 3
- 230000008569 process Effects 0.000 claims description 3
- 239000008030 superplasticizer Substances 0.000 claims description 3
- 238000002360 preparation method Methods 0.000 description 11
- 238000004137 mechanical activation Methods 0.000 description 6
- 239000004566 building material Substances 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 4
- 239000000463 material Substances 0.000 description 4
- 239000004568 cement Substances 0.000 description 3
- 239000004567 concrete Substances 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000009472 formulation Methods 0.000 description 3
- 238000011160 research Methods 0.000 description 3
- 239000007787 solid Substances 0.000 description 3
- 238000012360 testing method Methods 0.000 description 3
- BGPVFRJUHWVFKM-UHFFFAOYSA-N N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] Chemical compound N1=C2C=CC=CC2=[N+]([O-])C1(CC1)CCC21N=C1C=CC=CC1=[N+]2[O-] BGPVFRJUHWVFKM-UHFFFAOYSA-N 0.000 description 2
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical group OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 description 2
- 238000001354 calcination Methods 0.000 description 2
- 238000005266 casting Methods 0.000 description 2
- 238000005265 energy consumption Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 238000000465 moulding Methods 0.000 description 2
- 239000000126 substance Substances 0.000 description 2
- 239000008399 tap water Substances 0.000 description 2
- 235000020679 tap water Nutrition 0.000 description 2
- 101100298225 Caenorhabditis elegans pot-2 gene Proteins 0.000 description 1
- 241001374849 Liparis atlanticus Species 0.000 description 1
- LGRFSURHDFAFJT-UHFFFAOYSA-N Phthalic anhydride Natural products C1=CC=C2C(=O)OC(=O)C2=C1 LGRFSURHDFAFJT-UHFFFAOYSA-N 0.000 description 1
- 239000004721 Polyphenylene oxide Substances 0.000 description 1
- 230000003213 activating effect Effects 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 125000000217 alkyl group Chemical group 0.000 description 1
- 229910000147 aluminium phosphate Inorganic materials 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- JHIWVOJDXOSYLW-UHFFFAOYSA-N butyl 2,2-difluorocyclopropane-1-carboxylate Chemical compound CCCCOC(=O)C1CC1(F)F JHIWVOJDXOSYLW-UHFFFAOYSA-N 0.000 description 1
- 150000007942 carboxylates Chemical group 0.000 description 1
- 150000001732 carboxylic acid derivatives Chemical class 0.000 description 1
- 239000003153 chemical reaction reagent Substances 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 239000003245 coal Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 239000002270 dispersing agent Substances 0.000 description 1
- 239000000835 fiber Substances 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000003837 high-temperature calcination Methods 0.000 description 1
- 230000036571 hydration Effects 0.000 description 1
- 238000006703 hydration reaction Methods 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000000865 phosphorylative effect Effects 0.000 description 1
- 229920000570 polyether Polymers 0.000 description 1
- 229920000642 polymer Polymers 0.000 description 1
- 229920005862 polyol Polymers 0.000 description 1
- 229920006395 saturated elastomer Polymers 0.000 description 1
- 238000000926 separation method Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 229910001220 stainless steel Inorganic materials 0.000 description 1
- 239000010935 stainless steel Substances 0.000 description 1
- 150000005846 sugar alcohols Polymers 0.000 description 1
- ISIJQEHRDSCQIU-UHFFFAOYSA-N tert-butyl 2,7-diazaspiro[4.5]decane-7-carboxylate Chemical group C1N(C(=O)OC(C)(C)C)CCCC11CNCC1 ISIJQEHRDSCQIU-UHFFFAOYSA-N 0.000 description 1
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/10—Mixing in containers not actuated to effect the mixing
- B28C5/12—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers
- B28C5/14—Mixing in containers not actuated to effect the mixing with stirrers sweeping through the materials, e.g. with incorporated feeding or discharging means or with oscillating stirrers the stirrers having motion about a horizontal or substantially horizontal axis
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
- B02C17/10—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls with one or a few disintegrating members arranged in the container
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
- B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
- B02C23/00—Auxiliary methods or auxiliary devices or accessories specially adapted for crushing or disintegrating not provided for in preceding groups or not specially adapted to apparatus covered by a single preceding group
- B02C23/08—Separating or sorting of material, associated with crushing or disintegrating
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/003—Methods for mixing
- B28C5/006—Methods for mixing involving mechanical aspects
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C5/00—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions
- B28C5/08—Apparatus or methods for producing mixtures of cement with other substances, e.g. slurries, mortars, porous or fibrous compositions using driven mechanical means affecting the mixing
- B28C5/0806—Details; Accessories
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B28—WORKING CEMENT, CLAY, OR STONE
- B28C—PREPARING CLAY; PRODUCING MIXTURES CONTAINING CLAY OR CEMENTITIOUS MATERIAL, e.g. PLASTER
- B28C7/00—Controlling the operation of apparatus for producing mixtures of clay or cement with other substances; Supplying or proportioning the ingredients for mixing clay or cement with other substances; Discharging the mixture
- B28C7/0007—Pretreatment of the ingredients, e.g. by heating, sorting, grading, drying, disintegrating; Preventing generation of dust
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B14/00—Use of inorganic materials as fillers, e.g. pigments, for mortars, concrete or artificial stone; Treatment of inorganic materials specially adapted to enhance their filling properties in mortars, concrete or artificial stone
- C04B14/02—Granular materials, e.g. microballoons
- C04B14/04—Silica-rich materials; Silicates
- C04B14/10—Clay
- C04B14/106—Kaolin
-
- C—CHEMISTRY; METALLURGY
- C04—CEMENTS; CONCRETE; ARTIFICIAL STONE; CERAMICS; REFRACTORIES
- C04B—LIME, MAGNESIA; SLAG; CEMENTS; COMPOSITIONS THEREOF, e.g. MORTARS, CONCRETE OR LIKE BUILDING MATERIALS; ARTIFICIAL STONE; CERAMICS; REFRACTORIES; TREATMENT OF NATURAL STONE
- C04B28/00—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements
- C04B28/02—Compositions of mortars, concrete or artificial stone, containing inorganic binders or the reaction product of an inorganic and an organic binder, e.g. polycarboxylate cements containing hydraulic cements other than calcium sulfates
- C04B28/04—Portland cements
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02W—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO WASTEWATER TREATMENT OR WASTE MANAGEMENT
- Y02W30/00—Technologies for solid waste management
- Y02W30/50—Reuse, recycling or recovery technologies
- Y02W30/91—Use of waste materials as fillers for mortars or concrete
Landscapes
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Structural Engineering (AREA)
- Ceramic Engineering (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Food Science & Technology (AREA)
- Dispersion Chemistry (AREA)
- Organic Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Inorganic Chemistry (AREA)
- Civil Engineering (AREA)
- Crushing And Grinding (AREA)
Abstract
The invention discloses a device and a process for preparing magnetized water UHPC, comprising the following steps: step 1: placing the first raw material kaolin clay and ceramic grinding balls into a ceramic inner tank and sealing; step 2: wrapping the outer surface of the ceramic inner tank with a screen, fixing a built-in magnet and a grinding-assisting stirring plate, and then placing the ceramic inner tank into the ceramic outer tank; step 3: injecting the second raw material into a ceramic outer tank, sealing the tank opening of the ceramic outer tank, and then placing the ceramic outer tank on a roller ball mill; step 4: fixing an external magnet on an iron frame, and fixing the iron frame on a roller ball mill; step 5: operating a roller ball mill to mechanically activate the kaolin clay for 20 minutes to 40 minutes; step 6: filling the third raw material into a ceramic outer tank, sealing, then placing the ceramic outer tank on a roller ball mill again, continuously running the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials under the action of a grinding-assisted stirring plate to obtain a UHPC mixture; step 7: pouring out the UHPC mixture, pouring, curing to obtain magnetized water UHPC.
Description
Technical Field
The invention belongs to the field of building materials, and particularly relates to a device and a process for preparing magnetized water UHPC.
Background
Ultra-high performance concrete (UHPC) has excellent performances such as ultra-high mechanical properties, durability, toughness and the like, and has been a research hotspot in the field of civil engineering since birth. However, UHPC blends are difficult to prepare due to their high viscosity. In addition, in order to realize ultra-high performance, UHPC is extremely pursued in the aspects of raw material selection, preparation process, maintenance system and the like, so that the mechanical properties of the UHPC are difficult to further improve by the conventional method. In addition, the metakaolin serving as one of the UHPC admixture is obtained by high-temperature calcination of the kaolin, the defects of high equipment technical requirement, high energy consumption and the like exist, and the high-grade metakaolin is high in price due to the fact that the metakaolin is also applied to other fields, so that the metakaolin is not beneficial to large-scale application in the building material field.
According to the Chinese patent application document of application number 2020116186222, the regenerated concrete fine aggregate and the micro powder are ground by a grinder to obtain regenerated UHPC micro powder, and the regenerated UHPC micro powder and an exciting agent are uniformly stirred and mixed to obtain regenerated UHPC cement. According to the Chinese patent application document of the application No. 2019110395607, fly ash and water are mixed by a ball mill, blast furnace slag, water and a dispersing agent are mixed by a ball mill, tailings are ground by a dry mill, and then the three groups of materials are mixed and stirred with a water reducing agent and steel fibers to prepare the green UHPC material.
The Chinese patent application document of application No. 2020106099092 discloses superplasticizers with alkyl chains as main chains, carboxylic acid or carboxylate side chains at the tail ends, polyether side chains, polyol amine side chains substituted by phosphoric acid or phosphorous acid at the tail ends and other side chains, which comprehensively enhance the adhesive capacity to all cementing materials, so that the particle friction is weakened, and the viscosity of UHPC mixing is reduced. According to the Chinese patent application document of application number 2020105905655, phthalic anhydride, a polyalcohol polymer and a phosphorylating reagent are used as raw materials to research a concrete viscosity reducer, and the concrete viscosity reducer is used in UHPC with the water-gel ratio of 0.12-0.20, so that the viscosity of the UHPC is obviously reduced, and the preparation and construction difficulties of the UHPC are reduced.
According to the Chinese patent application document of application number 2021110829641, coal-series kaolin and water are mixed, stirred and crushed into particles at a high speed, and then treated at a high temperature of 600 ℃ to obtain the high-activity metakaolin. According to the Chinese patent application document of application number 2021101182191, kaolin is subjected to multiple heat treatment and gas-solid separation in a cyclone preheater and then is sent to a calciner for calcination, so that the high-activity metakaolin is obtained, and the energy consumption for preparing the metakaolin is reduced to a certain extent.
Although the prior art has advanced to some extent, the following problems still exist:
(1) In the aspect of UHPC preparation, namely, research results mainly comprise a method for reducing the viscosity of UHPC mixture so as to reduce the preparation difficulty of UHPC, but the hydration activity of UHPC raw materials is not explored, and accordingly, how to sufficiently improve the mechanical properties of UHPC is not considered.
(2) The preparation of metakaolin does not consider the use of low-grade kaolin, and mainly adopts a calcination mode for preparation, and still needs to consume high-grade natural resources and consume a great deal of energy.
Disclosure of Invention
The invention aims to provide a device and a process for preparing magnetized water UHPC, which realize that common kaolin clay is used for preparing metakaolin and UHPC, and solve the problems of difficult stirring and full exploitation of UHPC strength during UHPC preparation.
In order to achieve the above purpose, the technical scheme adopted by the invention is as follows:
an apparatus for preparing magnetized water UHPC comprises a ceramic outer tank, a ceramic inner tank and a screen mesh which are positioned in the ceramic outer tank,
the ceramic outer tank is arranged on the roller ball mill, a plurality of discharge holes are formed in the surface of the ceramic inner tank, and the screen mesh is wrapped on the outer surface of the ceramic inner tank.
Further, still include iron frame and a set of external magnet, iron frame fixes on the drum-type ball mill, a set of external magnet is fixed in on the iron frame and be located the outside of ceramic outer jar, a set of external magnet includes two external arc magnets of relative setting.
Further, the device also comprises a group of built-in magnets, wherein the group of built-in magnets are fixed between the ceramic outer tank and the ceramic inner tank, and the group of built-in magnets comprise two built-in arc magnets which are oppositely arranged.
Further, the grinding-assisted stirring device further comprises four grinding-assisted stirring plates, wherein the four grinding-assisted stirring plates are respectively fixed at the end parts of two oppositely arranged built-in arc magnets, the surface of each grinding-assisted stirring plate is provided with a first bolt hole for fixing the built-in arc magnets, and at least one thin-blade-shaped grinding hole is formed in the edge of each grinding-assisted stirring plate.
Further, the ceramic inner tank further comprises a plurality of grinding balls, and the plurality of grinding balls are arranged in the ceramic inner tank.
Further, the ceramic inner tank further comprises two groups of sealing and fastening components, each group of sealing and fastening components comprises a sealing cover and a fastening triangular steel plate, the sealing cover of the first group of sealing and fastening components is used for sealing the port of the ceramic inner tank, a fastening screw is arranged on the fastening triangular steel plate, the fastening triangular steel plate of the first group of sealing and fastening components is used for fastening the sealing cover of the first group of sealing and fastening components on the port of the ceramic inner tank, the sealing cover of the second group of sealing and fastening components is used for sealing the port of the ceramic outer tank, and the fastening triangular steel plate of the second group of sealing and fastening components is used for fastening the sealing cover of the second group of sealing and fastening components on the port of the ceramic outer tank.
The process for preparing the magnetized water UHPC by adopting the device for preparing the magnetized water UHPC comprises the following steps:
step 1: placing the first raw material kaolin clay and ceramic grinding balls into a ceramic inner tank and sealing;
step 2: wrapping the outer surface of the ceramic inner tank with a screen, fixing a built-in magnet and a grinding-assisting stirring plate, and then placing the ceramic inner tank into the ceramic outer tank;
step 3: injecting a second raw material into a ceramic outer tank, sealing the tank opening of the ceramic outer tank, and then placing the ceramic outer tank on a roller ball mill, wherein the second raw material comprises mixing water, a grinding-aid retarder sodium hexametaphosphate, a polycarboxylate water reducer and a viscosity reducer;
step 4: fixing an external magnet on an iron frame, placing the iron frame on the upper side and the lower side of a ceramic outer tank, and fixing the iron frame on a roller ball mill;
step 5: after the roller ball mill is operated to mechanically activate the kaolin clay for 20 to 40 minutes, powder of the kaolin clay enters the ceramic outer tank through the discharge hole and the screen mesh on the ceramic inner tank;
step 6: filling the third raw material into a ceramic outer tank, sealing, then placing the ceramic outer tank on a roller ball mill again, continuously running the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials under the action of a grinding-assisted stirring plate to obtain a UHPC mixture;
step 7: pouring out the UHPC mixture, pouring, curing to obtain magnetized water UHPC.
Further, the third raw material includes: portland cement of P.II 52.5 grade and above strength grade, siO 2 Silica fume with content more than 95%; quartz sand with particle size not greater than 1 mm.
Further, the mass ratio of the first to third raw materials is: 30 to 40 percent of Portland cement with P.II grade of 52.5 grade and above strength grade and 5 to 7 percent of SiO 2 Silica fume with content more than 95 percent, kaolin clay with content of 6 to 30 percent; 25% -40% of quartz sand with the grain diameter not larger than 1mm; 0.6 to 0.7 percent of polycarboxylate superplasticizer with water reducing rate more than 40 percent; 1.0 to 2.0 percent of viscosity reducer; 0.5 to 1.0 percent of grinding-aid retarder sodium hexametaphosphate; 25% -35% of mixing water.
Further, the kaolin component in the kaolin clay is more than 50%, and the loading amount of the kaolin clay during grinding is not more than 50% of the volume of the ceramic inner tank.
Compared with the prior art, the invention has the remarkable advantages that:
(1) By utilizing the characteristic that kaolin is easier to grind than other components in clay, after grinding and activating a common kaolin clay ball mill, particles mainly comprising metakaolin are firstly ground and pass through a screen to become UHPC raw materials, and the UHPC raw materials and other UHPC raw materials are further ground and activated by a grinding-assisted stirring plate, so that the UHPC strength is improved.
(2) The magnets are arranged on the surface of the ceramic inner tank and the iron frame, so that the UHPC mixed water is magnetized water, and the strength of the UHPC is improved.
(3) In the grinding process of raw materials, the grinding-assisting stirring plate simultaneously uniformly stirs the raw materials, so that the problem of difficult UHPC preparation is solved.
Drawings
FIG. 1 is a schematic perspective view of the device of the present invention;
FIG. 2 is a cross-sectional view of the invention patent from FIG. 1 A-A;
FIG. 3 is a schematic view of an iron frame of the present invention;
FIG. 4 is a schematic illustration of the ceramic outer tank of the present invention;
FIG. 5 is a schematic view of a ceramic inner tank of the present invention;
FIG. 6 is a schematic view of an external magnet of the present invention;
FIG. 7 is a schematic view of a seal cap of the present invention;
FIG. 8 is a schematic view of a fastened triangular steel plate of the present invention;
FIG. 9 is a schematic view of a screen of the present invention;
FIG. 10 is a schematic view of a grinding-assisted agitator plate of the present invention;
FIG. 11 is a schematic illustration of a built-in magnet of the present invention;
FIG. 12 is a schematic illustration of the connection of the built-in magnet and the grinding-assisted agitator plate of the present invention;
FIG. 13 is a schematic representation of the relative positions of the ceramic inner tank, screen, internal magnet and grinding-assisted agitator plate of the present invention.
In the figure: 1. the device comprises a frame end bolt hole, a ceramic outer tank, a frame middle bolt hole, an external magnet, an iron frame, a sealing cover, a fastening triangular steel plate, a fastening screw, a grinding assisting stirring plate, an internal magnet, an internal tank, a screen, a discharge hole, a grinding ball, a second bolt hole, a first bolt hole, a grinding hole, a third bolt hole and a fourth bolt hole, wherein the frame end bolt hole, the ceramic outer tank, the frame middle bolt hole, the external magnet, the iron frame, the sealing cover, the fastening triangular steel plate, the fastening screw, the grinding assisting stirring plate, the internal magnet, the internal tank, the screen, the discharge hole, the grinding ball, the second bolt hole, the first bolt hole, the grinding hole, the third bolt hole and the fourth bolt hole.
Detailed Description
The present invention will be described in further detail with reference to the following examples in order to make the objects, technical solutions and advantages of the present invention more apparent. It should be understood that the specific embodiments described herein are for purposes of illustration only and are not intended to limit the scope of the invention.
Referring to fig. 1-13, an apparatus for preparing magnetized water UHPC comprises a ceramic outer tank 2, and a ceramic inner tank 11 and a screen 12 positioned in the ceramic outer tank 2,
the ceramic outer tank 2 is arranged on a roller ball mill, a plurality of discharge holes 13 are formed in the surface of the ceramic inner tank 11, and the screen 12 is wrapped on the outer surface of the ceramic inner tank 11.
Further, in combination with fig. 1, the device further comprises an iron frame 5 and a set of external magnets 4, wherein the iron frame 5 is fixed on the drum ball mill, the set of external magnets 4 are fixed on the iron frame 5 and are positioned outside the ceramic outer pot 2, and the set of external magnets 4 comprise two oppositely arranged external arc magnets.
Further, in conjunction with fig. 2, 11-13, a set of built-in magnets 10 is further included, the set of built-in magnets 10 is fixed between the ceramic outer tank 2 and the ceramic inner tank 11, and the set of built-in magnets 10 includes two built-in arc magnets disposed opposite to each other.
Further, in combination with fig. 10-13, the grinding-assisting stirring plates 9 are further included, the four grinding-assisting stirring plates 9 are respectively fixed at the end parts of two oppositely arranged built-in arc magnets, the surface of each grinding-assisting stirring plate 9 is provided with a first bolt hole 16 for fixing the built-in arc magnets, at least one thin-blade grinding hole 17 is formed in the edge of each grinding-assisting stirring plate, and the grinding-assisting stirring plates are used for further stirring and grinding the first to third raw materials in the running and rotating process of the machine.
Further, a plurality of grinding balls 14 are further included, and the plurality of grinding balls 14 are disposed in the ceramic inner tank 11.
Further, in combination with fig. 1 and 7-8, two sets of sealing and fastening components are further included, each set of sealing and fastening components includes a sealing cover 6 and a fastening triangular steel plate 7, the sealing cover 6 of the first set of sealing and fastening components is used for sealing the port of the ceramic inner tank 11, a fastening screw is arranged on the fastening triangular steel plate 7, the fastening triangular steel plate 7 of the first set of sealing and fastening components is used for fastening the sealing cover 6 of the first set of sealing and fastening components on the port of the ceramic inner tank 11, the sealing cover 6 of the second set of sealing and fastening components is used for sealing the port of the ceramic outer tank 2, and the fastening triangular steel plate 7 of the second set of sealing and fastening components is used for fastening the sealing cover 6 of the second set of sealing and fastening components on the port of the ceramic outer tank 2.
The process for preparing the magnetized water UHPC by adopting the device for preparing the magnetized water UHPC comprises the following steps:
step 1: placing a first raw material kaolin clay and ceramic grinding balls 14 into a ceramic inner tank 11 and sealing;
step 2: the outer surface of the ceramic inner tank 11 is wrapped with a screen 12, and the fixed built-in magnet 10 and the grinding-assisting stirring plate 9 are placed in the ceramic outer tank 2;
step 3: injecting a second raw material into the ceramic outer tank 2, sealing the tank opening of the ceramic outer tank 2, and then placing the ceramic outer tank on a roller ball mill, wherein the second raw material comprises mixing water, a grinding-aid retarder sodium hexametaphosphate, a polycarboxylate water reducer and a viscosity reducer;
step 4: the external magnet 4 is fixed on the iron frame 5, and the iron frame 5 is arranged on the upper side and the lower side of the ceramic outer tank 2 and is fixed on the roller ball mill;
step 5: after the roller ball mill is operated to mechanically activate the kaolin clay for 20 to 40 minutes, powder of the kaolin clay enters the ceramic outer tank 2 through the discharge hole 13 and the screen 12 on the ceramic inner tank 11;
step 6: filling the third raw material into a ceramic outer tank 2, sealing, then placing the ceramic outer tank on a roller ball mill again, continuously running the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials under the action of a grinding-assisted stirring plate 9 to obtain a UHPC mixture;
step 7: pouring out the UHPC mixture, pouring, curing to obtain magnetized water UHPC.
Further, the third raw material includes: portland cement of P.II 52.5 grade and above strength grade, siO 2 Silica fume with content more than 95%; quartz sand with particle size not greater than 1 mm.
Further, the mass ratio of the first to third raw materials is: 30 to 40 percent of Portland cement with P.II grade of 52.5 grade and above strength grade and 5 to 7 percent of SiO 2 Silica fume with content more than 95 percent, kaolin clay with content of 6 to 30 percent; 25% -40% of quartz sand with the grain diameter not larger than 1mm; 0.6 to 0.7 percent of polycarboxylate superplasticizer with water reducing rate more than 40 percent; 1.0 to 2.0 percent of viscosity reducer; 0.5 to 1.0 percent of grinding-aid retarder sodium hexametaphosphate; 25% -35% of mixing water.
Further, the kaolin component in the kaolin clay is more than 50%, and the loading amount of the kaolin clay is not more than 50% of the volume of the ceramic inner tank 11 during grinding; the mixing water is tap water; the screen 12 is a 200-mesh stainless steel screen; the roller ball mill is a common roller ball mill sold in the market.
Example 1
The kaolin clay is a mixture of kaolin produced by Kaolin factories in coal sea in Yungang of Datong city and common clay, and the content of the kaolin is 50%; the cement is Portland cement grade P.II 52.5 produced by Thailand sea snail Cement Limited liability company; silica fume is produced by Shanghai wide building materials Co.Ltd 2 The content is more than 95 percent; quartz sand is produced by Changxing Tianhe building materials, and has the grain diameter of 1mm; the polycarboxylate water reducer is produced by Jiangsu Su Bote new material Co.Ltd, the solid content is 51.4%, and the water reducing rate of the saturated mixing amount point of the water reducer is more than 40%; the mixed water is tap water for life; the viscosity reducer is produced by Rong Cheng chemical industry limited company and contains 50% of solid; sodium hexametaphosphate is produced by Shanghai Zhangyun chemical industry Co., ltd. The ball mill is a ceramic double-tank ball mill produced by Ding Shuhao strong mechanical factory in Yixing city, and the capacities of the ceramic inner tank 11 and the ceramic outer tank 2 are 1 liter and 5 liters respectively.
The preparation method comprises the following steps:
(1) placing kaolin clay and ceramic grinding balls 14 into a ceramic inner tank 11 and sealing;
(2) the outer surface of the ceramic inner tank 11 is wrapped with a screen 12, and a fixed built-in arc magnet 10 and a grinding-assisting stirring plate 9 are placed in the ceramic outer tank 2;
(3) mixing water, grinding-aid retarder sodium hexametaphosphate, polycarboxylate water reducer and viscosity reducer are injected into a ceramic outer tank 2, and a tank opening is sealed and then placed on a roller ball mill;
(4) fixing an external magnet 4 on an iron frame 5;
(5) iron frames 5 are arranged on the upper side and the lower side of the ceramic outer tank 2 and fixed on a roller ball mill;
(6) after the roller ball mill is operated to mechanically activate the kaolin clay for 20 to 40 minutes, powder taking metakaolin as a main component enters the ceramic outer tank 2 through the communicating holes on the tank body and the screen 12;
(7) filling other raw materials of UHPC into a ceramic outer tank 2, sealing, then placing the ceramic outer tank on a roller ball mill again, continuously running the roller ball mill for 10 minutes, and further grinding and mixing the metakaolin and the other raw materials of UHPC into UHPC mixture under the action of a grinding-assisted stirring plate 9;
(8) pouring out the UHPC mixture, testing the fluidity according to JG/T408-2019, casting and molding according to GB/T31387-2015, curing and testing the mechanical property.
Example 1-example 3 the formulation is shown in Table 1 and the preparation process is the same.
The formulation of comparative example 1 is shown in Table 1, and the preparation process is the same.
The results of each example and comparative example are shown in Table 2
Table 1 examples and comparative formulations
Table 2 test results
The proportion of the raw materials of the UHPC is kept unchanged, the mechanical activation of the kaolin clay is carried out for different time, when the mechanical activation of the kaolin clay is carried out for 10 minutes in the comparative examples 1, 2 and 3, no metakaolin enters the ceramic outer tank 2, and when the mechanical activation of the kaolin clay is carried out for 20 minutes to 40 minutes, the proportion of the metakaolin component and other components of the clay in the ceramic outer tank 2 is improved along with the prolongation of the mechanical activation time, but the proportion of the metakaolin component is larger, the flexural strength and the compressive strength of the UHPC are obviously improved, but the fluidity of the UHPC mixture is 0 after the mechanical activation for 40 minutes, and the casting molding is not easy, namely the mechanical activation time is not suitable to be longer.
The foregoing has outlined and described the basic principles, features, and advantages of the present invention. It will be understood by those skilled in the art that the present invention is not limited to the embodiments described above, and that the above embodiments and descriptions are merely illustrative of the principles of the present invention, and various changes and modifications may be made without departing from the spirit and scope of the invention, which is defined in the appended claims. The scope of the invention is defined by the appended claims and equivalents thereof.
Claims (4)
1. A process for preparing magnetized water UHPC by adopting a device for preparing the magnetized water UHPC,
the device comprises a ceramic outer tank (2), a ceramic inner tank (11) and a screen (12) which are positioned in the ceramic outer tank (2),
the ceramic outer tank (2) is arranged on a roller ball mill, a plurality of discharge holes (13) are formed in the surface of the ceramic inner tank (11), and the screen (12) is wrapped on the outer surface of the ceramic inner tank (11);
the ceramic ball mill further comprises an iron frame (5) and a group of external magnets (4), wherein the iron frame (5) is fixed on the roller ball mill, the group of external magnets (4) are fixed on the iron frame (5) and are positioned outside the ceramic outer pot (2), and the group of external magnets (4) comprises two oppositely arranged external arc magnets;
the ceramic inner tank is characterized by further comprising a group of built-in magnets (10), wherein the group of built-in magnets (10) are fixed between the ceramic outer tank (2) and the ceramic inner tank (11), and the group of built-in magnets (10) comprises two built-in arc magnets which are oppositely arranged;
the grinding-assisted stirring device comprises a plurality of grinding-assisted stirring plates (9), wherein the grinding-assisted stirring plates (9) are respectively fixed at the end parts of two oppositely arranged built-in arc magnets, the surface of each grinding-assisted stirring plate (9) is provided with a first bolt hole (16) for being fixed with the built-in arc magnets, and the edge of each grinding-assisted stirring plate (9) is provided with at least one thin-edge grinding hole (17);
the ceramic grinding device further comprises a plurality of ceramic grinding balls (14), wherein the ceramic grinding balls (14) are arranged in the ceramic inner tank (11);
the ceramic inner tank (11) is characterized by further comprising a first group of sealing and fastening components and a second group of sealing and fastening components, wherein the first group of sealing and fastening components comprises a first sealing cover (6) and a first fastening triangular steel plate (7), the second group of sealing and fastening components comprises a second sealing cover and a second fastening triangular steel plate, the first sealing cover (6) of the first group of sealing and fastening components is used for sealing the port of the ceramic inner tank (11), the first fastening triangular steel plate (7) is provided with a fastening screw, the first fastening triangular steel plate (7) of the first group of sealing and fastening components is used for fastening the first sealing cover (6) of the first group of sealing and fastening components on the port of the ceramic inner tank (11), the second sealing cover of the second group of sealing and fastening components is used for sealing the port of the ceramic outer tank (2), and the second fastening triangular steel plate of the second group of sealing and fastening components is used for fastening the second sealing cover of the second group of sealing and fastening components on the port of the ceramic outer tank (2);
the process is characterized by comprising the following steps of:
step 1: placing a first raw material of kaolin clay and ceramic grinding balls (14) in a ceramic inner tank (11) and sealing, wherein the kaolin clay is a mixture of kaolin and common clay;
step 2: the outer surface of the ceramic inner tank (11) is wrapped with a screen (12), and a built-in magnet (10) and a grinding-assisted stirring plate (9) are fixed and then placed in the ceramic outer tank (2);
step 3: injecting a second raw material into the ceramic outer tank (2), sealing a tank opening of the ceramic outer tank (2), and then placing the ceramic outer tank on a roller ball mill, wherein the second raw material comprises mixing water, a grinding-aid retarder sodium hexametaphosphate, a polycarboxylate water reducer and a viscosity reducer;
step 4: an external magnet (4) is fixed on an iron frame (5), and the iron frame (5) is arranged on the upper side and the lower side of the ceramic outer tank (2) and is fixed on a roller ball mill;
step 5: after the roller ball mill is operated to mechanically activate the mixture of the kaolin and the common clay for 20 to 40 minutes, powder of the mixture of the kaolin and the common clay enters the ceramic outer tank (2) through the discharge hole (13) and the screen (12) on the ceramic inner tank (11);
step 6: filling the third raw material into a ceramic outer tank (2), sealing, then placing the ceramic outer tank on a roller ball mill again, continuously running the roller ball mill for a preset time, and further grinding and mixing the first to third raw materials under the action of a grinding-assisted stirring plate (9) to obtain a UHPC mixture;
step 7: pouring out the UHPC mixture, pouring, curing to obtain magnetized water UHPC.
2. The process for preparing magnetized water UHPC according to claim 1, characterized in that the third raw material comprises: portland cement with strength grade of P.II over 52.5 grade, siO 2 Silica fume with content more than 95%; quartz sand with particle size not greater than 1 mm.
3. Process for preparing magnetized water UHPC according to claim 2, characterized in that the mass ratio of the first to third raw materials is: 30 to 40 percent of Portland cement with the strength grade of more than grade P.II 52.5 and 5 to 7 percent of SiO 2 Silica fume with content more than 95 percent, kaolin clay with content of 6 to 30 percent; 25% -40% of quartz sand with the grain diameter not larger than 1mm; 0.6 to 0.7 percent of polycarboxylate superplasticizer with water reducing rate more than 40 percent; 1.0 to 2.0 percent of viscosity reducer; 0.5 to 1.0 percent of grinding-aid retarder sodium hexametaphosphate; 25% -35% of mixing water.
4. A process for preparing a magnetized water UHPC according to claim 3, characterized in that the kaolin clay has a kaolin content of 50% or more, and the kaolin and normal clay mixture is ground to a charge of 50% or less of the volume of the ceramic inner tank (11).
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| US9428420B2 (en) * | 2014-08-14 | 2016-08-30 | Space Coatings Inc. | Concrete composition and process |
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