CN102603266B - Method for sintering brick from coal gangue - Google Patents
Method for sintering brick from coal gangue Download PDFInfo
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- CN102603266B CN102603266B CN 201210063278 CN201210063278A CN102603266B CN 102603266 B CN102603266 B CN 102603266B CN 201210063278 CN201210063278 CN 201210063278 CN 201210063278 A CN201210063278 A CN 201210063278A CN 102603266 B CN102603266 B CN 102603266B
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Abstract
The invention relates to a method for sintering brick from coal gangue. The method comprises the steps of: evenly mixing water and low-heat-value crushed coal gangue with dried and crushed sludge in a certain proportion so as to form a green brick raw material; and sequentially pressing and palletizing burning the green brick raw material to obtain the product brick. In the method, the low-heat-value coal gangue and the sludge are utilized to sinter the brick, thus turning waste to wealth, realizing the reclamation utilization of the low-heat-value coal gangue and the sludge and reducing the environmental pollution; and the method is simple in technology and low in cost, and produced product is good in appearance and high in strength.
Description
[technical field]
The present invention relates to a kind of fired brick method, relate in particular to a kind of coal gangue baked brick method.
[background technology]
To be calorific value do not utilize less than the gangue of 600 kilocalories/kg a large amount of low calorific value coal spoils of the annual discharging of China mostly, arbitrarily stacks land occupation, contaminated environment not only, and cause the wasting of resources.And the municipal sewage plant can produce a large amount of mud in handling life and industrial wastewater process, its moisture content height, and the content of beary metal height, microorganism, pathogen is many and stench causes its cost of disposal height, and resource and don't generation secondary pollution approach are narrow.How to deal carefully with low calorific value coal spoil and mud, realize its recycling, and free from environmental pollution, be the difficult problem that we are badly in need of solving.
The low calorific value coal spoil does not add fuel and do not add clay fired brick technology and yet there are no report in the market, and is insufficient because the independent fired brick of low calorific value coal spoil can sintering occur, the pale yellow and whiting problem of fired brick color.
[summary of the invention]
Technical problem to be solved by this invention is to provide a kind of coal gangue baked brick method, utilizes low calorific value coal spoil and sludge baked brick, turns waste into wealth, and has realized the recycling of low calorific value coal spoil and mud, has reduced environmental pollution.
The present invention solves the problems of the technologies described above by the following technical programs: a kind of coal gangue baked brick method, and its operating procedure is as follows:
A, the low calorific value coal spoil is broken into coal gangue pulverizing article, particle diameter is that 60-70 purpose fine powder accounts for more than 50% in the coal gangue pulverizing article, and remaining particle diameter is below 3.5 millimeters;
B, mud is carried out mummification to water content is 15%～20%, and the sludge crushing after the mummification being become particle diameter is mud powder below 3.5 millimeters again;
C, the coal gangue pulverizing article that steps A is made, mud powder that step B makes be coal gangue pulverizing article by weight ratio: mud powder=85%～90%: 10%～15% mixes, obtain mixture, add water in the mixture then and stir to obtain the adobe raw material, wherein, the weight proportion of the water yield of adding and adobe raw material is a water: adobe raw material=5%～10%: 1;
D, adobe raw material are pressed into adobe through hydraulic press in hydraulic pressure extrusion molding mode, and wherein, extrusion pressure is 14～16MPa;
E, the water content that hothouse is dried to adobe is sent in adobe is 5%～8%, sends into tunnel cave then and carries out sintering, promptly gets product, and described sintering temperature is 950 ℃～1050 ℃, and sintering time is 24h～30h.
Further, among the described step B mud being carried out mummification to water content is 15%～20%, utilizes the hot fume afterheat of double-shaft paddle drying machine and tunnel cave to combine mud is carried out mummification, particularly: earlier mud is placed double-shaft paddle drying machine 20min-30min, the temperature of described double-shaft paddle drying machine is 150 ℃-180 ℃, again mud is sent in the hothouse that is connected with hot flue gas place 20min-30min after, promptly obtain water content and be 15%～20% mud.
Further, be 5%～8% with brick bat drying to the water content of adobe in the described step e, concrete operation method is: the inner drying 6-10h of tunnel chamber for drying is sent in adobe, promptly obtain the adobe that water content is 5%-8%.
Beneficial effect of the present invention is: with water, through broken low calorific value coal spoil, will be mixed into the adobe raw material by a certain percentage through mummification and broken mud, with the adobe raw material suppress successively, a sign indicating number burning promptly gets the product brick.The present invention utilizes low calorific value coal spoil and sludge baked brick, turns waste into wealth, and has realized the recycling of low calorific value coal spoil and mud, has reduced environmental pollution; Technology of the present invention is simple, cost is low, and the product appearance of production is good, intensity is high.
[specific embodiment]
1, a kind of coal gangue sintering method, it is characterized in that: its method of operating is as follows:
A, low calorific value coal spoil (being that calorific value is less than 600 kilocalories/kg gangue) is broken into coal gangue pulverizing article, particle diameter is that 60-70 purpose fine powder accounts for more than 50% in the coal gangue pulverizing article, remaining particle diameter is below 3.5 millimeters, because if the coal gangue pulverizing article particle diameter is too big, material is thick excessively, then the crushed material poor plasticity, easy-formation not, also can make die wear big, may cause simultaneously the inner combustible of adobe fully not burn, the anti-freezing property that influences the quality of brick such as brick is just relatively poor.
B, mud is carried out mummification to water content is 15%～20%, and the sludge crushing after the mummification being become particle diameter is mud powder below 3.5 millimeters again; Wherein, it is 15%～20% that mud is carried out mummification to water content, utilizes the hot fume afterheat of double-shaft paddle drying machine and tunnel cave to combine mud is carried out mummification, particularly: earlier mud is placed double-shaft paddle drying machine 20min-30min, the temperature of described double-shaft paddle drying machine is 150 ℃～180 ℃, again mud is sent into place 20min～30min in the hothouse that is connected with hot flue gas after, promptly obtain water content and be 15%～20% mud.
C, the coal gangue pulverizing article that steps A is made, mud powder that step B makes be coal gangue pulverizing article by weight ratio: mud powder=85%～90%: 10%～15% mixes, obtain mixture, add water in the mixture then and stir to obtain the adobe raw material, wherein, the weight proportion of the water yield of adding and adobe raw material is a water: adobe raw material=5%～10%: 1; The design of above-mentioned each composition proportion can make the dioxide-containing silica in the adobe raw material remain on 50%～70%, aluminium oxide remains on 15%～20%, iron oxide 2%～8%, the plasticity index of adobe raw material is controlled between 7～15, its objective is to make the adobe raw material more abundant, make the physical performance index of brick more excellent in the sintering reaction process.
D, adobe raw material are pressed into adobe through hydraulic press in hydraulic pressure extrusion molding mode, and wherein, extrusion pressure is 14～16Mpa, and the setting of this extrusion pressure can make adobe more closely knit, so that sintering, the intensity of raising brick.
E, the water content that hothouse is dried to adobe is sent in adobe is 5%～8%, sends into tunnel cave then and carries out sintering, promptly gets product, and described sintering temperature is 950 ℃～1050 ℃, and sintering time is 24h～30h.Wherein, be that 5%～8% concrete operation method is with brick bat drying to the water content of adobe: the inner drying 6-10h of tunnel chamber for drying is sent in adobe, promptly obtain the adobe that water content is 5%-8%.
Embodiment one
1, a kind of coal gangue sintering method, its method of operating is as follows:
A, the low calorific value coal spoil is broken into coal gangue pulverizing article, particle diameter is that 60 purpose fine powders account for 50% in the coal gangue pulverizing article, and remaining particle diameter is 4 millimeters.
B, utilize double-shaft paddle drying machine and the hot fume afterheat of tunnel cave to combine mud is carried out mummification, promptly earlier mud is placed double-shaft paddle drying machine 20min, the temperature of described double-shaft paddle drying machine is 150 ℃, again mud is sent in the hothouse that is connected with hot flue gas place 20min after, the moisture content of mud just reaches 15%.
C, the coal gangue pulverizing article that steps A is made, mud powder that step B makes be coal gangue pulverizing article by weight ratio: mud powder=85%: 10% mixes, obtain mixture, add water in the mixture then and stir to obtain the adobe raw material, wherein, the weight proportion of the water yield of adding and adobe raw material is a water: adobe raw material=5%: 1.
D, adobe raw material are that the hydraulic press of HF-1100C is pressed into adobe in hydraulic pressure extrusion molding mode through model, and wherein, extrusion pressure is 14MPa.
E, the tunnel chamber for drying is sent in adobe carry out dry 6h, its moisture content just reaches 8%, sends into tunnel cave then and carries out sintering, promptly gets product, and described sintering temperature is 950 ℃, and sintering time is 24h.
Embodiment two
1, a kind of coal gangue sintering method, its method of operating is as follows:
A, the low calorific value coal spoil is broken into coal gangue pulverizing article, particle diameter is that 70 purpose fine powders account for 90% in the coal gangue pulverizing article, and remaining particle diameter is 5 millimeters.
B, utilize double-shaft paddle drying machine and the hot fume afterheat of tunnel cave to combine mud is carried out mummification, promptly earlier mud is placed double-shaft paddle drying machine 30min, the temperature of described double-shaft paddle drying machine is 180 ℃, again mud is sent in the hothouse that is connected with hot flue gas place 30min after, the moisture content of mud just reaches 20%.
C, the coal gangue pulverizing article that steps A is made, mud powder that step B makes be coal gangue pulverizing article by weight ratio: mud powder=90%: 15% mixes, obtain mixture, add water in the mixture then and stir to obtain the adobe raw material, wherein, the weight proportion of the water yield of adding and adobe raw material is a water: adobe raw material=10%: 1.
D, adobe raw material are that the hydraulic press of HF-1100C is pressed into adobe in hydraulic pressure extrusion molding mode through model, and wherein, extrusion pressure is 16MPa.
E, the tunnel chamber for drying is sent in adobe carry out dry 10h, its moisture content just reaches 5%, sends into tunnel cave then and carries out sintering, promptly gets product, and described sintering temperature is 1050 ℃, and sintering time is 30h.
Embodiment three
1, a kind of coal gangue sintering method, its method of operating is as follows:
A, the low calorific value coal spoil is broken into coal gangue pulverizing article, particle diameter is that 65 purpose fine powders account for more than 70% in the coal gangue pulverizing article, and remaining particle diameter is 3.8 millimeters.
B, utilize double-shaft paddle drying machine and the hot fume afterheat of tunnel cave to combine mud is carried out mummification, promptly earlier mud is placed double-shaft paddle drying machine 26min, the temperature of described double-shaft paddle drying machine is 170 ℃, again mud is sent in the hothouse that is connected with hot flue gas place 25min after, the moisture content of mud just reaches 18%.
C, the coal gangue pulverizing article that steps A is made, mud powder that step B makes be coal gangue pulverizing article by weight ratio: mud powder=87%: 13% mixes, obtain mixture, add water in the mixture then and stir to obtain the adobe raw material, wherein, the weight proportion of the water yield of adding and adobe raw material is a water: adobe raw material=7%: 1.
D, adobe raw material are that the hydraulic press of HF-1100C is pressed into adobe in hydraulic pressure extrusion molding mode through model, and wherein, extrusion pressure is 15MPa.
E, the tunnel chamber for drying is sent in adobe carry out dry 8h, its moisture content just reaches 7%, sends into tunnel cave then and carries out sintering, promptly gets product, and described sintering temperature is 1000 ℃, and sintering time is 27h.
The present invention utilizes low calorific value coal spoil and sludge baked brick, turns waste into wealth, and has realized the recycling of low calorific value coal spoil and mud, has reduced environmental pollution.Technology of the present invention is simple, cost is low, and the product appearance of production is good, intensity is high, and the hollow brick intensity of production is 10～15MPa, has reached the intensity 10～15MPa of the sintered perforated brick of stipulating among the standard GB 13544-2000; The solid brick intensity of producing is 20～25MPa, has also reached the solid brick intensity 20-25MPa among standard GB/T5101-1998 " fired common brick ".
Claims (3)
1. coal gangue baked brick method, it is characterized in that: its operating procedure is as follows:
A, the low calorific value coal spoil is broken into coal gangue pulverizing article, particle diameter is that 60-70 purpose fine powder accounts for more than 50% in the coal gangue pulverizing article, and remaining particle diameter is below 3.5 millimeters;
B, mud is carried out mummification to water content is 15%～20%, and the sludge crushing after the mummification being become particle diameter is mud powder below 3.5 millimeters again;
C, the coal gangue pulverizing article that steps A is made, mud powder that step B makes be coal gangue pulverizing article by weight ratio: mud powder=85%～90%: 10%～15% mixes, obtain mixture, add water in the mixture then and stir to obtain the adobe raw material, wherein, the weight proportion of the water yield of adding and adobe raw material is a water: adobe raw material=5%～10%: 1;
D, adobe raw material are pressed into adobe through hydraulic press in hydraulic pressure extrusion molding mode, and wherein, extrusion pressure is 14～16MPa;
E, the water content that hothouse is dried to adobe is sent in adobe is 5%～8%, sends into tunnel cave then and carries out sintering, promptly gets product, and described sintering temperature is 950 ℃～1050 ℃, and sintering time is 24h～30h.
2. coal gangue baked brick method as claimed in claim 1, it is characterized in that: among the described step B mud being carried out mummification to water content is 15%～20%, utilizes the hot fume afterheat of double-shaft paddle drying machine and tunnel cave to combine mud is carried out mummification, particularly: earlier mud is placed double-shaft paddle drying machine 20min-30min, the temperature of described double-shaft paddle drying machine is 150 ℃-180 ℃, again mud is sent in the hothouse that is connected with hot flue gas place 20min-30min after, promptly obtain water content and be 15%～20% mud.
3. coal gangue baked brick method as claimed in claim 1, it is characterized in that: in the described step e be that 5%～8% concrete operation method is: the inner drying 6-10h of tunnel chamber for drying is sent in adobe, promptly obtain the adobe that water content is 5%-8% brick bat drying to the water content of adobe.
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| CN 201210063278 CN102603266B (en) | 2012-03-09 | 2012-03-09 | Method for sintering brick from coal gangue |
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| CN 201210063278 CN102603266B (en) | 2012-03-09 | 2012-03-09 | Method for sintering brick from coal gangue |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107459340A (en) * | 2017-08-14 | 2017-12-12 | 徐州市恒基伟业建材发展有限公司 | A kind of manufacture method of coal gangue baked brick |
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| CN106118704A (en) * | 2016-07-19 | 2016-11-16 | 四川乔丰新材料科技有限公司 | A kind of production technology of novel peat brick |
| CN106187079A (en) * | 2016-07-19 | 2016-12-07 | 四川乔丰新材料科技有限公司 | A kind of production technology of novel mud coal insulating brick |
| CN106064933A (en) * | 2016-07-19 | 2016-11-02 | 四川乔丰新材料科技有限公司 | A kind of formula of novel peat brick |
| CN107244890A (en) * | 2017-06-15 | 2017-10-13 | 福建闽盛新型建材有限公司 | A kind of method of utilization sludge and coal gangue sintering self-insulating brick |
| CN113061018A (en) * | 2021-03-20 | 2021-07-02 | 北票天宝耐火材料有限公司 | Method for manufacturing landscape brick and archaized brick high-grade building material by using coal gangue |
| CN114105609A (en) * | 2021-12-27 | 2022-03-01 | 山西丰瑞再生资源科技有限公司 | Process for making brick by using coal gangue and municipal sludge |
| CN115108811B (en) * | 2022-06-17 | 2023-10-20 | 中国矿业大学(北京) | Gangue ingredients, permeable bricks and preparation method thereof |
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- 2012-03-09 CN CN 201210063278 patent/CN102603266B/en active Active
Patent Citations (5)
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| CN1311087A (en) * | 2000-02-29 | 2001-09-05 | 刘小生 | Method for producing colliery wastes brick |
| CN101265077A (en) * | 2008-04-19 | 2008-09-17 | 西安墙体材料研究设计院 | Technique for producing energy-saving sintering brick by silt |
| CN101565295A (en) * | 2009-06-05 | 2009-10-28 | 福建工程学院 | Method using mud and sludge for sintering brick |
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