CN102603266A - Method for sintering brick from coal gangue - Google Patents
Method for sintering brick from coal gangue Download PDFInfo
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- CN102603266A CN102603266A CN2012100632784A CN201210063278A CN102603266A CN 102603266 A CN102603266 A CN 102603266A CN 2012100632784 A CN2012100632784 A CN 2012100632784A CN 201210063278 A CN201210063278 A CN 201210063278A CN 102603266 A CN102603266 A CN 102603266A
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- adobe
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- coal gangue
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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 vitrified 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 coal 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, contaminate 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 trade effluent process, and its water ratio is high, and heavy metal content is high, and mikrobe, pathogenic agent is many and stench causes its cost of disposal high, and resource utilization 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 vitrified brick technology and also do not appear in the newspapers in the market, and is insufficient because the independent vitrified brick of low calorific value coal spoil can sintering occur, the pale yellow and whiting problem of vitrified 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 through following technical scheme: a kind of coal gangue baked brick method, and its operation steps is following:
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 cut is 15%～20%, and again the sludge crushing after the mummification being become particle diameter is the mud powder below 3.5 millimeters;
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 hydropress with hydraulic pressure extrusion moulding mode, and wherein, extrusion pressure is 14～16MPa;
E, the water cut that kiln is dried to adobe is sent in adobe is 5%～8%, sends into tunnel then and carries out sintering, promptly gets product, and said sintering temperature is 950 ℃～1050 ℃, and sintering time is 24h～30h.
Further; Among the said step B mud being carried out mummification to water cut is 15%～20%, utilizes the hot fume afterheat of double-shaft paddle drying machine and tunnel to combine mud is carried out mummification; Particularly: earlier mud is placed double-shaft paddle drying machine 20min-30min; The temperature of said double-shaft paddle drying machine is 150 ℃-180 ℃, again with mud send in the kiln that is connected with hot flue gas place 20min-30min after, promptly obtain water cut and be 15%～20% mud.
Further, the water cut with brick bat drying to adobe in the said step e is 5%～8%, and concrete operation method is: the inner drying 6-10h of tunnel chamber for drying is sent in adobe, promptly obtain the adobe that water cut is 5%-8%.
Beneficial effect of the present invention is: with water, through broken low calorific value coal spoil, will pass through mummification and broken mud is mixed into the adobe raw material by a certain percentage, with the adobe raw material suppress successively, sign indicating number burns and 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.
[embodiment]
1, a kind of coal gangue sintering method, it is characterized in that: its working method is following:
A, low calorific value coal spoil (being that calorific value is less than 600 kilocalories/kg coal 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, and 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, possibly cause simultaneously the inner combustiblesubstance of adobe fully not burn, the anti-freezing property of quality such as brick that influences brick is just relatively poor.
B, mud is carried out mummification to water cut is 15%～20%, and again the sludge crushing after the mummification being become particle diameter is the mud powder below 3.5 millimeters; Wherein, It is 15%～20% that mud is carried out mummification to water cut, utilizes the hot fume afterheat of double-shaft paddle drying machine and tunnel to combine mud is carried out mummification; Particularly: earlier mud is placed double-shaft paddle drying machine 20min-30min; The temperature of said double-shaft paddle drying machine is 150 ℃～180 ℃, again with mud send into place 20min～30min in the kiln that is connected with hot flue gas after, promptly obtain water cut 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%; Aluminum oxide remains on 15%～20%; Red stone 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 in the sintering reaction process, makes the physical performance index of brick more excellent.
D, adobe raw material are pressed into adobe through hydropress with hydraulic pressure extrusion moulding 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 cut that kiln is dried to adobe is sent in adobe is 5%～8%, sends into tunnel then and carries out sintering, promptly gets product, and said sintering temperature is 950 ℃～1050 ℃, and sintering time is 24h～30h.Wherein, be that 5%～8% concrete operation method is with the water cut of brick bat drying to adobe: the inner drying 6-10h of tunnel chamber for drying is sent in adobe, promptly obtain the adobe that water cut is 5%-8%.
Embodiment one
1, a kind of coal gangue sintering method, its working method is following:
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 to combine mud is carried out mummification; Promptly earlier mud is placed double-shaft paddle drying machine 20min; The temperature of said double-shaft paddle drying machine is 150 ℃; Again with mud send in the kiln that is connected with hot flue gas place 20min after, the water ratio 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 hydropress of HF-1100C is pressed into adobe with hydraulic pressure extrusion moulding mode through model, and wherein, extrusion pressure is 14MPa.
E, the tunnel chamber for drying is sent in adobe carry out dry 6h, its water ratio just reaches 8%, sends into tunnel then and carries out sintering, promptly gets product, and said sintering temperature is 950 ℃, and sintering time is 24h.
Embodiment two
1, a kind of coal gangue sintering method, its working method is following:
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 to combine mud is carried out mummification; Promptly earlier mud is placed double-shaft paddle drying machine 30min; The temperature of said double-shaft paddle drying machine is 180 ℃; Again with mud send in the kiln that is connected with hot flue gas place 30min after, the water ratio 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 hydropress of HF-1100C is pressed into adobe with hydraulic pressure extrusion moulding mode through model, and wherein, extrusion pressure is 16MPa.
E, the tunnel chamber for drying is sent in adobe carry out dry 10h, its water ratio just reaches 5%, sends into tunnel then and carries out sintering, promptly gets product, and said sintering temperature is 1050 ℃, and sintering time is 30h.
Embodiment three
1, a kind of coal gangue sintering method, its working method is following:
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 to combine mud is carried out mummification; Promptly earlier mud is placed double-shaft paddle drying machine 26min; The temperature of said double-shaft paddle drying machine is 170 ℃; Again with mud send in the kiln that is connected with hot flue gas place 25min after, the water ratio 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 hydropress of HF-1100C is pressed into adobe with hydraulic pressure extrusion moulding mode through model, and wherein, extrusion pressure is 15MPa.
E, the tunnel chamber for drying is sent in adobe carry out dry 8h, its water ratio just reaches 7%, sends into tunnel then and carries out sintering, promptly gets product, and said 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 operation steps is following:
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 cut is 15%～20%, and again the sludge crushing after the mummification being become particle diameter is the mud powder below 3.5 millimeters;
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 hydropress with hydraulic pressure extrusion moulding mode, and wherein, extrusion pressure is 14～16MPa;
E, the water cut that kiln is dried to adobe is sent in adobe is 5%～8%, sends into tunnel then and carries out sintering, promptly gets product, and said 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 said step B mud being carried out mummification to water cut is 15%～20%, utilizes the hot fume afterheat of double-shaft paddle drying machine and tunnel to combine mud is carried out mummification; Particularly: earlier mud is placed double-shaft paddle drying machine 20min-30min; The temperature of said double-shaft paddle drying machine is 150 ℃-180 ℃; Again with mud send in the kiln that is connected with hot flue gas place 20min-30min after, promptly obtain water cut and be 15%～20% mud.
3. coal gangue baked brick method as claimed in claim 1; It is characterized in that: be that 5%～8% concrete operation method is with the water cut of brick bat drying to adobe in the said step e: the inner drying 6-10h of tunnel chamber for drying is sent in adobe, promptly obtain the adobe that water cut is 5%-8%.
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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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| CN102603266B CN102603266B (en) | 2013-07-31 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN115108811A (en) * | 2022-06-17 | 2022-09-27 | 中国矿业大学(北京) | Coal gangue ingredient and water permeable brick and preparation method thereof |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| 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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| 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 |
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Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| 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 |
| 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 |
| 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 |
| CN115108811A (en) * | 2022-06-17 | 2022-09-27 | 中国矿业大学(北京) | Coal gangue ingredient and water permeable brick and preparation method thereof |
| 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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| CN102603266B (en) | 2013-07-31 |
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