CN102674799A - Semidry-process sintering desulphurization slag autoclaved building block and production method thereof - Google Patents
Semidry-process sintering desulphurization slag autoclaved building block and production method thereof Download PDFInfo
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- CN102674799A CN102674799A CN201210154991XA CN201210154991A CN102674799A CN 102674799 A CN102674799 A CN 102674799A CN 201210154991X A CN201210154991X A CN 201210154991XA CN 201210154991 A CN201210154991 A CN 201210154991A CN 102674799 A CN102674799 A CN 102674799A
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Abstract
The invention relates to a semidry-process sintering desulphurization slag autoclaved building block and a production method thereof. The building block is made of the following components in percent by weight in a combined autoclaving way: 5-30 percent of semidry-process sintering desulphurization ash, 30-60 percent of steel slag, 25-30 of superfine slag powder and 1-10 percent of pebble. The production method comprises the steps of vibrating and molding the components according to the percent by weight and autoclaving after molding to obtain the semidry-process sintering desulphurization slag autoclaved building block. The semidry-process sintering desulphurization slag autoclaved building block and the production method thereof have the advantages that the desulphurization ash, waste steel slag and slag of iron and steel enterprises are fully utilized, the wastes are turned into valuable things, the materials such as lime, carbide slag, binder, early strength agent and cement are not added, the energy is saved, the mixing quantity of the waste slag is high, the strength of the produced bricks are higher, the production cost is low, the product quality is high and all technical indexes satisfy the national standard on building bricks; and the treatment and disposal efficiency of the waste slag of the iron and steel enterprises is improved, the development level of secondary resources is improved, the quantity of the used cement in the building material industry can be reduced and the economic and environmental values are higher.
Description
Technical field
The invention belongs to the metallurgical environmental protection technical field, refer to steam-cured building block of a kind of semidrying sintering desulfuration slag and preparation method particularly.
Background technology
Semidrying sintering desulfuration ash is the by product of steel works sintering system desulfurization, and generation is huge.Utilize technology owing to lack semidrying sintering desulfuration ash, can produce 24000 tons of sintering desulfuration ashes every year, can only store up processing.Not only land occupation, contaminate environment are handled in stacking, and increase the economical load of enterprise.Storing up in a large number of desulfurized ash brought a large amount of dust pollutions for the on-site environment of iron and steel enterprise, also taken valuable land resources, the dual waste of this resource of in environmentalism, being known as simultaneously in a large number.
Summary of the invention
The purpose of this invention is to provide steam-cured building block of a kind of semidrying sintering desulfuration slag and preparation method; This method not only can effectively solve the sintering semi-dry desulphurization ash and can not be used for the problem of building materials production and solve iron and steel enterprise storing up occupation of land and the secondary pollution problem of bringing in a large number because of desulfurized ash without oxide treatment; And the brick intention that makes is higher; Production cost is low, good product quality.
For solving the problems of the technologies described above, the steam-cured building block of semidrying sintering desulfuration slag that the present invention designed, the percentage ratio meter is grey by 5 ~ 25% semidrying sintering desulfuration by weight, 30 ~ 60% slag, 25 ~ 30% slag micropowder and 1 ~ 10% Guamishi combine.
Further, the specific surface area of said slag micropowder is not less than 450m
2/ kg.
The preparation method of the steam-cured building block of above-mentioned semidrying sintering desulfuration slag comprises the steps:
1) with the oven dry of semidrying sintering desulfuration ash;
2) sand shape is dried, is broken into to slag;
3) industrial slag is dried, is finely ground to the micro mist shape, process slag micropowder;
4) percentage ratio is got 5 ~ 25% semidrying sintering desulfuration ash by weight, 30 ~ 60% slag, and 25 ~ 30% slag micropowder and 1 ~ 10% Guamishi add the water mixing and stirring;
5) then the mixture in the step 4) is shaken molded, steam-cured after the moulding, can make the steam-cured building block of semidrying sintering desulfuration slag.
As preferred version, in the step 5) in the steam-cured process from room temperature by after temperature rise rate≤40 ℃/h rises to 105 ~ 120 ℃, constant temperature 6 ~ 8h reduces to room temperature by rate of temperature fall≤40 ℃/h again.
As preferred version, in the said step 4), water and slag micropowder weight ratio are 0.22 ~ 0.29.
As preferred version, with industrial slag oven dry, be finely ground to specific surface area and be not less than 450m
2The micro mist shape of/kg.
The present invention has made full use of iron and steel enterprise's desulfurized ash, waste steel slag, and slag is turned waste into wealth, and does not add lime; Carbide slag, sticker, hardening accelerator, materials such as cement; Save energy, the waste residue incorporation is big, and the brick intensity of production is higher; Production cost is low, good product quality, and its each item technical indicator reaches national building brick standard.The objective of the invention is to solve the sintering semi-dry desulphurization ash and can not be used for the problem that building materials are produced, solve iron and steel enterprise's invar slag simultaneously and store up occupation of land and the secondary pollution problem of bringing in a large number without oxide treatment.The present invention can improve the processing and the disposal efficiency of steel enterprise waste residue, improves the exploitation level of secondary resource, also can reduce the usage quantity of building material industry cement simultaneously, has the higher economic worth and the value of environmental protection.
Embodiment
In order to explain the present invention better, further illustrate main contents of the present invention below in conjunction with specific embodiment, but content of the present invention not only is confined to following examples.
Embodiment 1:
Get the steel works sintering semi-dry desulphurization ash, after the oven dry, subsequent use.Put into baking oven 85 ℃ of oven dry 2h and levigate, control its specific surface area and be not less than 450m for slag micropowder
2/ kg, subsequent use.Get iron and steel enterprise's slag, after fragmentation, magnetic separation, subsequent use.Market acquisition finished product Guamishi, after mud is removed in washing, subsequent use.Take by weighing semi-dry desulphurization ash 20kg, slag micropowder 30kg, slag 40kg, Guamishi 10kg drops into various starting material in the stirrer by proportioning raw materials simultaneously, adds water 7.5kg mixing and stirring.It is molded to shake through brick press then, steam-cured after the moulding, be 40 ℃/h to 110 ℃ from room temperature by temperature rise rate in the steam-cured process after, constant temperature 8h is that 40 ℃/h is to room temperature by rate of temperature fall again.Promptly can be made into the steam-cured building block of semidrying sintering desulfuration slag.
Embodiment 2:
Get the steel works sintering semi-dry desulphurization ash, after the oven dry, subsequent use.Put into baking oven 85 ℃ of oven dry 2h and levigate, control its specific surface area and be not less than 450m for slag micropowder
2/ kg, subsequent use.Get iron and steel enterprise's slag, after fragmentation, magnetic separation, subsequent use.Market acquisition finished product Guamishi, after mud is removed in washing, subsequent use.Take by weighing semi-dry desulphurization ash 12kg, slag micropowder 28kg, slag 50kg, Guamishi 10kg drops into various starting material in the stirrer by proportioning raw materials simultaneously, adds water 8.12kg mixing and stirring.It is molded to shake through brick press then, steam-cured after the moulding, is after 35 ℃/h rises to 105 ℃ from room temperature by temperature rise rate in the steam-cured process, and constant temperature 6h is that 35 ℃/h reduces to room temperature by rate of temperature fall again.Promptly can be made into the steam-cured building block of semidrying sintering desulfuration slag.
Embodiment 3:
Get the steel works sintering semi-dry desulphurization ash, after the oven dry, subsequent use.Put into baking oven 85 ℃ of oven dry 2h and levigate, control its specific surface area and be not less than 450m for slag micropowder
2/ kg, subsequent use.Get iron and steel enterprise's slag, after fragmentation, magnetic separation, subsequent use.Market acquisition finished product Guamishi, after mud is removed in washing, subsequent use.Take by weighing semi-dry desulphurization ash 25kg, slag micropowder 30kg, slag 45kg drops into various starting material in the stirrer by proportioning raw materials simultaneously, adds water 6.6kg mixing and stirring.It is molded to shake through brick press then, steam-cured after the moulding, is after 40 ℃/h rises to 120 ℃ from room temperature by temperature rise rate in the steam-cured process, and constant temperature 6h is that 40 ℃/h reduces to room temperature by rate of temperature fall again.Promptly can be made into the steam-cured building block of semidrying sintering desulfuration slag.
Embodiment 4:
Get the steel works sintering semi-dry desulphurization ash, after the oven dry, subsequent use.Put into baking oven 85 ℃ of oven dry 2h and levigate, control its specific surface area and be not less than 450m for slag micropowder
2/ kg, subsequent use.Get iron and steel enterprise's slag, after fragmentation, magnetic separation, subsequent use.Market acquisition finished product Guamishi, after mud is removed in washing, subsequent use.Take by weighing semi-dry desulphurization ash 5kg, slag micropowder 30kg, slag 60kg, Guamishi 5kg drops into various starting material in the stirrer by proportioning raw materials simultaneously, adds water 8.1kg mixing and stirring.It is molded to shake through brick press then, steam-cured after the moulding, is after 20 ℃/h rises to 110 ℃ from room temperature by temperature rise rate in the steam-cured process, and constant temperature 7h is that 20 ℃/h reduces to room temperature by rate of temperature fall again.Promptly can be made into the steam-cured building block of semidrying sintering desulfuration slag.
Embodiment 5:
Get the steel works sintering semi-dry desulphurization ash, after the oven dry, subsequent use.Putting into 85 ℃ of oven dry of baking oven 2h also levigate is slag micropowder, controls its specific surface area and is not less than 450m2/kg, subsequent use.Get iron and steel enterprise's slag, after fragmentation, magnetic separation, subsequent use.Market acquisition finished product Guamishi, after mud is removed in washing, subsequent use.Take by weighing semi-dry desulphurization ash 25kg, slag micropowder 30kg, slag 44kg, Guamishi 1kg drops into various starting material in the stirrer by proportioning raw materials simultaneously, adds water 7.8kg mixing and stirring.It is molded to shake through brick press then, steam-cured after the moulding, is after 30 ℃/h rises to 115 ℃ from room temperature by temperature rise rate in the steam-cured process, and constant temperature 6h is that 30 ℃/h reduces to room temperature by rate of temperature fall again.Promptly can be made into the steam-cured building block of semidrying sintering desulfuration slag.
Claims (7)
1. the steam-cured building block of a semidrying sintering desulfuration slag, the percentage ratio meter is grey by 5 ~ 30% semidrying sintering desulfuration by weight, 30 ~ 60% slag, 25 ~ 30% slag micropowder and steam-cured the forming of 1 ~ 10% Guamishi combination.
2. heat according to claim 1 is boiled in a covered pot over a slow fire the slag dry powder of wiping one's face for building, and it is characterized in that: the specific surface area of said slag micropowder is not less than 450m
2/ kg.
3. the preparation method of the steam-cured building block of claim 1 a said semidrying sintering desulfuration slag comprises the steps:
1) with the oven dry of semidrying sintering desulfuration ash;
2) sand shape is dried, is broken into to slag;
3) industrial slag is dried, is finely ground to the micro mist shape, process slag micropowder;
4) percentage ratio is got 5 ~ 30% semidrying sintering desulfuration ash by weight, 30 ~ 60% slag, and 25 ~ 30% slag micropowder and 1 ~ 10% Guamishi add the water mixing and stirring;
5) then the mixture in the step 4) is shaken molded, steam-cured after the moulding, can make the steam-cured building block of semidrying sintering desulfuration slag.
4. boil in a covered pot over a slow fire the preparation method of the slag dry powder of wiping one's face for building according to the said heat of claim 3; It is characterized in that: in the step 5) in the steam-cured process from room temperature by after temperature rise rate≤40 ℃/h rises to 105 ~ 120 ℃; Constant temperature 6 ~ 8h reduces to room temperature by rate of temperature fall≤40 ℃/h again.
5. build preparation method by laying bricks or stones according to claim 3 or the stewing slag of 4 said heat, it is characterized in that: in the said step 3), the micro mist shape that specific surface area is not less than 450m2/kg is dried, is finely ground to industrial slag with dry powder.
6. according to the preparation method of claim 3 or the stewing slag dry powder of wiping one's face for building of 4 said heat, it is characterized in that: in the said step 4), the weight ratio of water and slag micropowder is 0.22 ~ 0.29.
7. according to the preparation method of the stewing slag dry powder of wiping one's face for building of the said heat of claim 5, it is characterized in that: in the said step 4), the weight ratio of water and slag micropowder is 0.22 ~ 0.29.
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| CN103304207A (en) * | 2013-06-28 | 2013-09-18 | 武汉钢铁(集团)公司 | Semidry sintered desulfurized fly ash masonry dry powder and manufacturing method thereof |
| CN103319133A (en) * | 2013-06-28 | 2013-09-25 | 武汉钢铁(集团)公司 | Desulfurized-ash plastered dry powder by semidry process and preparation method thereof |
| CN103951366A (en) * | 2014-04-17 | 2014-07-30 | 武汉钢铁(集团)公司 | Grass planting brick manufactured from sintered flue gas semi-dry desulfurization ash and manufacture method of brick |
| CN104072016A (en) * | 2014-07-10 | 2014-10-01 | 武汉钢铁(集团)公司 | Semidry-process desulfurization ash putty for interior wall |
| CN104926217A (en) * | 2015-06-15 | 2015-09-23 | 武汉钢铁(集团)公司 | Method for manufacturing wall bricks |
| CN108745282A (en) * | 2018-05-25 | 2018-11-06 | 武汉钢铁有限公司 | A kind of flue gas desulfurization and denitrification pressed active carbon and preparation method thereof based on metallurgical solid waste |
| CN110698093A (en) * | 2019-10-30 | 2020-01-17 | 湖北大学 | Inorganic binder and preparation method thereof |
| CN110776267A (en) * | 2019-11-06 | 2020-02-11 | 中冶南方都市环保工程技术股份有限公司 | Inorganic cementing material prepared from Bayer process red mud and preparation method thereof |
| CN110937834A (en) * | 2019-12-12 | 2020-03-31 | 安徽工业大学 | Large-volume application method of thermally-stewed steel slag |
| CN113603453A (en) * | 2021-08-02 | 2021-11-05 | 新疆硅质耐火材料有限公司 | Method for preparing imitation Song pottery brick from refractory clay tailings, steel slag and desulfurized ash |
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Cited By (13)
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| CN103304207B (en) * | 2013-06-28 | 2015-11-04 | 武汉钢铁(集团)公司 | Semidrying sintering desulfuration ash masonry dry powder and manufacture method thereof |
| CN103319133A (en) * | 2013-06-28 | 2013-09-25 | 武汉钢铁(集团)公司 | Desulfurized-ash plastered dry powder by semidry process and preparation method thereof |
| CN103304207A (en) * | 2013-06-28 | 2013-09-18 | 武汉钢铁(集团)公司 | Semidry sintered desulfurized fly ash masonry dry powder and manufacturing method thereof |
| CN103951366A (en) * | 2014-04-17 | 2014-07-30 | 武汉钢铁(集团)公司 | Grass planting brick manufactured from sintered flue gas semi-dry desulfurization ash and manufacture method of brick |
| CN104072016B (en) * | 2014-07-10 | 2016-04-13 | 武汉钢铁(集团)公司 | A kind of semi-dry desulphurization ash inner wall putty |
| CN104072016A (en) * | 2014-07-10 | 2014-10-01 | 武汉钢铁(集团)公司 | Semidry-process desulfurization ash putty for interior wall |
| CN104926217A (en) * | 2015-06-15 | 2015-09-23 | 武汉钢铁(集团)公司 | Method for manufacturing wall bricks |
| CN108745282A (en) * | 2018-05-25 | 2018-11-06 | 武汉钢铁有限公司 | A kind of flue gas desulfurization and denitrification pressed active carbon and preparation method thereof based on metallurgical solid waste |
| CN108745282B (en) * | 2018-05-25 | 2020-12-11 | 武汉钢铁有限公司 | Metallurgical solid waste-based formed activated carbon for flue gas desulfurization and denitrification and preparation method thereof |
| CN110698093A (en) * | 2019-10-30 | 2020-01-17 | 湖北大学 | Inorganic binder and preparation method thereof |
| CN110776267A (en) * | 2019-11-06 | 2020-02-11 | 中冶南方都市环保工程技术股份有限公司 | Inorganic cementing material prepared from Bayer process red mud and preparation method thereof |
| CN110937834A (en) * | 2019-12-12 | 2020-03-31 | 安徽工业大学 | Large-volume application method of thermally-stewed steel slag |
| CN113603453A (en) * | 2021-08-02 | 2021-11-05 | 新疆硅质耐火材料有限公司 | Method for preparing imitation Song pottery brick from refractory clay tailings, steel slag and desulfurized ash |
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Application publication date: 20120919 |