CN104692768A - Coal gangue and shale hollow brick with excellent frost resistance and manufacturing method thereof - Google Patents
Coal gangue and shale hollow brick with excellent frost resistance and manufacturing method thereof Download PDFInfo
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- CN104692768A CN104692768A CN201510045880.9A CN201510045880A CN104692768A CN 104692768 A CN104692768 A CN 104692768A CN 201510045880 A CN201510045880 A CN 201510045880A CN 104692768 A CN104692768 A CN 104692768A
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- coal gangue
- shale
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- 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
Abstract
The invention discloses a coal gangue and shale hollow brick with excellent frost resistance. The coal gangue and shale hollow brick with excellent frost resistance is characterized by being prepared from the following raw materials in parts by weight: 70-73 parts of mixed powder of treated coal gangue and shale, 50-54 parts of pulverized fuel ash, 9-11 parts of saw dust, 4-6 parts of red mud, 3-5 parts of sodium sulfate, 2-3 parts of sodium chloride, 4-6 parts of spent pulping liquor and 9-10 parts of water. Compared with the prior art, the coal gangue and shale hollow brick disclosed by the invention has the advantage that the components are matched scientifically and reasonably; due to the addition of the mixed powder of treated coal gangue and shale and the ball-milled pulverized fuel ash, the plasticity index of the coal gangue and shale hollow brick is increased, the cohesiveness of particles is improved, and the adobe is compact, is low in water absorption rate and cracks less in the drying process; due to the addedsodium chloride, the frost resistance of the coal gangue and shale hollow brick is improved; due to the matched components, the coal gangue and shale hollow brick can be baked easily to have high cohesional strength and good frost resistance; and because the saw dust is burnt away in the baking process, the coal gangue and shale hollow brick is light in weight.
Description
Technical field
The present invention relates to building material field, particularly a kind of coal gangue shale hollow brick and preparation method thereof of anti-freezing property excellence.
Background technology
Coal gangue is as one of maximum industrial solid castoff of China's quantity discharged.And the quantity discharged of annual coal gangue is equivalent to about 10% of coal production then.Year discharge rate will be greater than 1.6 hundred million tons.Stack coal gangue and not only take a large amount of soil, and contaminate environment, affect life and the health of people.In addition, coal gangue spontaneous combustion can discharge multiple obnoxious flavour etc., goes back a large amount of flue dust of association simultaneously and has explosion hazard.Therefore spontaneous combustion of coal gangue hill causes impact in various degree to the atmospheric environment HUMAN HEALTH, animal and plant growth etc. of surrounding.Flyash is one of industrial residue that the current discharge capacity of China is larger, and along with the development of power industry, the flyash quantity discharged of coal-burning power plant increases year by year.A large amount of flyash does not add process, will produce airborne dust, atmosphere pollution; River can be caused to silt up if enter water system, and toxic chemical substance wherein also can work the mischief to human body and biology.
Change the promotion of policy at national wall under, the northern China major part coal-producing area generally adopts coal gangue to be main raw material brickmaking.Utilize coal gangue to bake bricks, it both can make raw material, can make fuel again, can accomplish that brickmaking need not be native, bake bricks without coal.This is one and both processed waste material, farmland saving again, and the comprehensive utilization project of fuel-saving killing three birds with one stone.As coal gangue itself, it is also a kind of deposition shale, and its chemical composition is substantially close to shale, because its adjacent coal seam generates, therefore containing a certain amount of carbon component, and can for baking bricks.South China area lacks coal resources, does not have coal gangue desirable, but most area has abundant shale ore resource.Shale is also a kind of desirable brick-making raw material, and shale brick quality is hard, and color and luster bright red can do dry wall and decorative block, deeply favors by user, is extensively adopted by our brickmaking industry.
The sintered hollow block quality that coal gangue, flyash, shale are produced is good, and the performances such as ultimate compression strength can reach more than hollow brick standard, freeze proof, wear-resisting, fire-resistant, acidproof, alkaline-resisting are all better.From following building materials market, utilize the slag such as coal gangue produce novel environment friendly building material product because itself is energy-conservation, lightweight, warming, this product can digest a large amount of industrial wastes simultaneously, farmland saving, decreasing pollution, protection of the environment.
But due to the position of the exploitation such as coal gangue, shale and the different of time, and windrow is uneven, material composition all can be caused to fluctuate large, so just need to carry out a series of process to raw material to make adobe more later, can quality product be improved, increase yield, reduce costs.
Summary of the invention
The object of this invention is to provide coal gangue shale hollow brick of a kind of anti-freezing property excellence and preparation method thereof.By carrying out a series of pre-treatment to coal gangue, shale, powder particles can be made to diminish, plasticity index rises, cohesiveness between particle increases, make base substrate finer and close, in drying process, during moisture evaporation, cracking phenomena improves, and water-intake rate reduces, thus adds blank strength and weather resistance.Add sodium-chlor, can frost resistance be improved.
In order to realize object of the present invention, the present invention is by following scheme implementation:
A coal gangue shale hollow brick for anti-freezing property excellence, is made up of the raw material of following weight part: the coal gangue shale mixed powder 70-73 after process, flyash 50-54, sawdust 9-11, red mud 4-6, sodium sulfate 3-5, sodium-chlor 2-3, spent pulping liquor 4-6, water 9-10;
Coal gangue shale mixed powder after described process is mixed by the raw material of following weight part: coal gangue 54-57, shale 18-20; Treatment process is as follows: (1) is selected coal gangue, shale, rejects the foreign material such as plastics, weeds, solid refuse, large-scale rock block wherein; (2) coal gangue, shale are carried out coarse crushing in jaw crusher, use grinder in small, broken bits after taking-up again, adjust powder particles by adjustment disk gap, control the 30%-50% that powder that particle diameter is less than 0.05mm accounts for total amount, 0.05-1.3mm accounts for 20-60%, and 1.3-2mm is less than 30%; (3) mixed powder is put into tramp iron separator except the metallic element such as de-iron, then put into stirrer and add water and stir, amount of water is the 15%-16% of mixed powder amount, then the material be stirred is put into the ageing of ageing storehouse 4-5 days and get final product.
The coal gangue shale hollow brick of a kind of anti-freezing property excellence of the present invention, is characterized in that, be made up of following concrete steps:
(1) sawdust, red mud are added pulverizer and pulverize, then cross 150 mesh sieves formation powder mix A stand-by, flyash, sodium sulfate are put into ball mill ball milling and is mixed to form compound B with powder mix A after 30-40 minute;
(2) compound B and the coal gangue shale mixed powder after processing together put into stirrer, add sodium-chlor, spent pulping liquor, water, adjustment material, to moulding water content, is then put into descaling extrusion press and is carried out extrusion moulding, control moulding moisture is 15%-17%, and forming pressure is 2MPa.
(3) shaping adobe is carried out drying by automatically cutting code fortune equipment feeding dry kiln, control temperature is 110 DEG C-120 DEG C, and be dried to water content lower than 6%, drying process controls at 12-20 hour.
(4) dried base substrate is put into tunnel calcining kiln taking again and is carried out roasting, slowly heats up with the speed of 50 DEG C-60 DEG C per hour, and firing temperature is 1050 DEG C, and firing period controls at 42-47 hour, is incubated and slowly cools to room temperature after 4-6 hour, take out and get final product.
The invention has the beneficial effects as follows: the more existing technology of the present invention, composition proportion is scientific and reasonable, add process after coal gangue shale mixed powder and ball milling after flyash, plasticity index rises, cohesiveness between particle increases, base substrate is finer and close, and in drying process, cracking phenomena improves, and water-intake rate reduces; Add sodium-chlor, can frost resistance be improved; Present component proportioning is easy to sintering, and after sintering, cohesive strength is high, and anti-freezing property is good, and sawdust burns in sintering procedure, alleviates the weight of brick body.
Specific embodiments
Below by specific examples, the present invention is described in detail.
A coal gangue shale hollow brick for anti-freezing property excellence, is made up of the raw material of following weight part (kilogram): the coal gangue shale mixed powder 70 after process, flyash 50, sawdust 9, red mud 4, sodium sulfate 3, sodium-chlor 2, spent pulping liquor 4, water 9;
Coal gangue shale mixed powder after described process is mixed by the raw material of following weight part (kilogram): coal gangue 54, shale 18; Treatment process is as follows: (1) is selected coal gangue, shale, rejects the foreign material such as plastics, weeds, solid refuse, large-scale rock block wherein; (2) coal gangue, shale are carried out coarse crushing in jaw crusher, use grinder in small, broken bits after taking-up again, adjust powder particles by adjustment disk gap, control the 30%-50% that powder that particle diameter is less than 0.05mm accounts for total amount, 0.05-1.3mm accounts for 20-60%, and 1.3-2mm is less than 30%; (3) mixed powder is put into tramp iron separator except the metallic element such as de-iron, then put into stirrer and add water and stir, amount of water is 15% of mixed powder amount, then the material be stirred is put into the ageing of ageing storehouse 4 days and get final product.
The coal gangue shale hollow brick of a kind of anti-freezing property excellence of the present invention, is characterized in that, be made up of following concrete steps:
(1) sawdust, red mud are added pulverizer and pulverize, then cross 150 mesh sieves formation powder mix A stand-by, flyash, sodium sulfate are put into ball mill ball milling and is mixed to form compound B with powder mix A after 30 minutes;
(2) compound B and the coal gangue shale mixed powder after processing together put into stirrer, add sodium-chlor, spent pulping liquor, water, adjustment material, to moulding water content, is then put into descaling extrusion press and is carried out extrusion moulding, controlling moulding moisture is 15%, and forming pressure is 2MPa.
(3) shaping adobe is carried out drying by automatically cutting code fortune equipment feeding dry kiln, control temperature is 110 DEG C-120 DEG C, is dried to water content lower than 6%, and drying process controlled at 16 hours.
(4) dried base substrate is put into tunnel calcining kiln taking again and is carried out roasting, slowly heats up with the speed of 50 DEG C-60 DEG C per hour, and firing temperature is 1050 DEG C, and firing period controls at 45 hours, is incubated and slowly cools to room temperature after 5 hours, take out and get final product.
Through various test determination, the intensity of the embodiment of the present invention reaches MU5.0 grade, and density is 985 kg/m
3, water-intake rate is 15.3%.
Claims (2)
1. the coal gangue shale hollow brick of an anti-freezing property excellence, it is characterized in that, be made up of the raw material of following weight part: the coal gangue shale mixed powder 70-73 after process, flyash 50-54, sawdust 9-11, red mud 4-6, sodium sulfate 3-5, sodium-chlor 2-3, spent pulping liquor 4-6, water 9-10;
Coal gangue shale mixed powder after described process is mixed by the raw material of following weight part: coal gangue 54-57, shale 18-20; Treatment process is as follows: (1) is selected coal gangue, shale, rejects the foreign material such as plastics, weeds, solid refuse, large-scale rock block wherein; (2) coal gangue, shale are carried out coarse crushing in jaw crusher, use grinder in small, broken bits after taking-up again, adjust powder particles by adjustment disk gap, control the 30%-50% that powder that particle diameter is less than 0.05mm accounts for total amount, 0.05-1.3mm accounts for 20-60%, and 1.3-2mm is less than 30%; (3) mixed powder is put into tramp iron separator except the metallic element such as de-iron, then put into stirrer and add water and stir, amount of water is the 15%-16% of mixed powder amount, then the material be stirred is put into the ageing of ageing storehouse 4-5 days and get final product.
2. the coal gangue shale hollow brick of a kind of anti-freezing property excellence according to claim 1, is characterized in that, be made up of following concrete steps:
(1) sawdust, red mud are added pulverizer and pulverize, then cross 150 mesh sieves formation powder mix A stand-by, flyash, sodium sulfate are put into ball mill ball milling and is mixed to form compound B with powder mix A after 30-40 minute;
(2) compound B and the coal gangue shale mixed powder after processing together put into stirrer, add sodium-chlor, spent pulping liquor, water, adjustment material, to moulding water content, is then put into descaling extrusion press and is carried out extrusion moulding, control moulding moisture is 15%-17%, and forming pressure is 2MPa;
(3) shaping adobe is carried out drying by automatically cutting code fortune equipment feeding dry kiln, control temperature is 110 DEG C-120 DEG C, is dried to water content lower than 6%, and drying process controls at 12-20 hour;
(4) dried base substrate is put into tunnel calcining kiln taking again and is carried out roasting, slowly heats up with the speed of 50 DEG C-60 DEG C per hour, and firing temperature is 1050 DEG C, and firing period controls at 42-47 hour, is incubated and slowly cools to room temperature after 4-6 hour, take out and get final product.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510045880.9A CN104692768A (en) | 2015-01-29 | 2015-01-29 | Coal gangue and shale hollow brick with excellent frost resistance and manufacturing method thereof |
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| CN201510045880.9A CN104692768A (en) | 2015-01-29 | 2015-01-29 | Coal gangue and shale hollow brick with excellent frost resistance and manufacturing method thereof |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130494A (en) * | 2015-08-13 | 2015-12-09 | 牛艳宁 | Foaming thermal-insulation fireproof brick produced by using coal gangue, and preparation method thereof |
| CN107365146A (en) * | 2017-08-01 | 2017-11-21 | 常州海瑞纺织品有限公司 | A kind of shale brick and preparation method thereof |
| CN109809800A (en) * | 2017-11-22 | 2019-05-28 | 辽宁法库陶瓷工程技术研究中心 | A method of it adding green shale and improves colliery wastes brick performance |
| CN110963785A (en) * | 2020-02-25 | 2020-04-07 | 和县明生环保材料有限责任公司 | Preparation method of hollow brick for enhancing frost resistance by utilizing furnace slag |
| CN111848127A (en) * | 2020-08-07 | 2020-10-30 | 和县明生环保材料有限责任公司 | Method for improving frost resistance of hollow brick prepared from coal gangue raw material |
| CN112518976A (en) * | 2020-12-01 | 2021-03-19 | 邹平永和新型建材有限公司 | Method and device for preparing hollow brick based on red mud |
| CN116283217A (en) * | 2022-12-12 | 2023-06-23 | 定远县明友墙体材料有限责任公司 | Environment-friendly high-toughness hollow brick and preparation method thereof |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105130494A (en) * | 2015-08-13 | 2015-12-09 | 牛艳宁 | Foaming thermal-insulation fireproof brick produced by using coal gangue, and preparation method thereof |
| CN107365146A (en) * | 2017-08-01 | 2017-11-21 | 常州海瑞纺织品有限公司 | A kind of shale brick and preparation method thereof |
| CN109809800A (en) * | 2017-11-22 | 2019-05-28 | 辽宁法库陶瓷工程技术研究中心 | A method of it adding green shale and improves colliery wastes brick performance |
| CN110963785A (en) * | 2020-02-25 | 2020-04-07 | 和县明生环保材料有限责任公司 | Preparation method of hollow brick for enhancing frost resistance by utilizing furnace slag |
| CN111848127A (en) * | 2020-08-07 | 2020-10-30 | 和县明生环保材料有限责任公司 | Method for improving frost resistance of hollow brick prepared from coal gangue raw material |
| CN112518976A (en) * | 2020-12-01 | 2021-03-19 | 邹平永和新型建材有限公司 | Method and device for preparing hollow brick based on red mud |
| CN112518976B (en) * | 2020-12-01 | 2022-02-18 | 邹平永和新型建材有限公司 | Method and device for preparing hollow brick based on red mud |
| CN116283217A (en) * | 2022-12-12 | 2023-06-23 | 定远县明友墙体材料有限责任公司 | Environment-friendly high-toughness hollow brick and preparation method thereof |
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