CN104119100A - Preparation method of high-volume coal gangue sintering heat-insulating building block - Google Patents
Preparation method of high-volume coal gangue sintering heat-insulating building block Download PDFInfo
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Abstract
The invention relates to a preparation method of a high-volume coal gangue sintering heat-insulating building block. The preparation method mainly comprises coal gangue, shales and a pore-forming agent material. According to the preparation method, after the coal gangue and the shales are crushed and mixed, pore-forming agent powder is added for aging together, disconnected pores can be generated in the building block by virtue of forming sintering, so that the heat-insulating property of the building block can be enhanced, and the self weight can be reduced. The heat-insulating building block produced by using a formula has the advantages of light self weight, good heat-insulating property and high strength; when the preparation method is used on a porous building block, the heat engineering property of the body part (non-hole part) of the building block is improved by more than 40% compared with that of a coal gangue sintering porous building block used at present; the 240mm*190mm*240mm porous building block with the porosity of 43.42% has the strength of MU 5.0 and the density of less than or equal to 850 kg/m<3>. The preparation method disclosed by the invention has the advantages of simplicity, low cost, light self weight and good heat-insulating property.
Description
Technical field
The present invention relates to a kind of preparation method of insulation blocks, especially a kind of preparation method who is applicable to the large blended coal gangue sintering heat insulation building block of construction work.
Background technology
Coal gangue is the solid waste of discharging in coal mining and coal washing process, and its output accounts for 10% ~ 15% of coal production.Along with improving constantly of coal production, the annual production of coal gangue also constantly increases, and 2012, China's coal gangue generation reached 6.2 hundred million tons, accounts for 40% of national industrial solid castoff generation, it is predicted that 2015 annual emissions will reach more than 700,000,000 tons.According to statistics, a large amount of coal gangue air storages, have formed more than 2600 coal gangue hills, and accumulation volume of cargo in storage reaches more than 50 hundred million tons, takes up an area more than 20 ten thousand mu.At present, because comprehensive utilization technique is ripe not enough, comprehensive utilization ratio is not high, and a large amount of coal gangues are thrown aside, not only take tract, and atmosphere pollution, farmland and water body.
Utilize coal gangue to produce energy-saving building material, profit is useless, energy-saving and environmental protection, can effectively promote the development of recycling economy.At present, common coal gangue porous building-brick (perforated brick) on market, its block part thermal conductivity is generally between 0.65 ~ 0.84W/mK, and thermal property is poor.Therefore, study high volume, high performance coal gangue product has great importance.
Using pore former is one of important channel of improving sintered porous building block (perforated brick) thermal property, also there is at present the precedent of using various organic and inorganic pore formers, but for using coal gangue, shale and pore former the like waste starting material not yet to have the good product of performance to occur.Chinese patent 200910184419.6 discloses another kind of < < and has utilized pure coal gangue to produce the method > > of self-insulation baked brick, can obtain good effect, but need to add coal dust, cause waste, its material therefor is more simultaneously, slightly aobvious complicated.
Summary of the invention
Technical problem: the object of the invention is to overcome the deficiency in prior art, provide a kind of method simple, with low cost, from the preparation method of heavy and light, good heat insulating, large blended coal gangue sintering heat insulation building block that intensity is high.
Technical scheme: the preparation method of large blended coal gangue sintering heat insulation building block provided by the invention, described insulation blocks by weight, is made by following component: water: 12 ~ 17 parts; Coal gangue: 73 ~ 76 parts; Shale: 19 ~ 21 parts; Pore former: 5 ~ 6 parts;
Its preparation method is as follows:
A. coal gangue and shale are carried out to fragmentation, maximum particle diameter is no more than 2mm; Pore former is pulverized, and largest particle is no more than 0.5mm, mixes by weight, common ageing, and digestion time is no less than 72 hours
;
B. utilize mould to make the building block of desired shape;
C. stripping forming, air-dry after routinely method fire.
Described pore former is rice husk or stalk powder
.
Beneficial effect: the present invention utilizes Coal Refuse to produce insulation blocks, after coal gangue and shale fragmentation, add pore former powder, mix, common ageing, after forming and sintering, there will be disconnected aperture in building block inside, can greatly improve the heat-insulating property of building block, reduce deadweight.The preparation method of the large blended coal gangue sintering heat insulation building block providing, has considered mechanical property and the thermal property of building block, and the addition content of coal gangue reaches more than 70%.After tested, the thermal conductivity of building block block materials can reach 0.36W/mK, and less to the Effect on Mechanical Properties of building block.In addition, pore former is agricultural wastes, and wide material sources, cheap are used this kind of formula, not only can improve block performance, and are conducive to cost-saving.The experiment proved that, being applied to hole ratio is 32% left and right coal gangue perforated brick, and the air-entrained concrete building block of its thermal property and low density grade is close, but its weather resistance and security are well beyond air-entrained concrete building block, have larger advantage.Overcome the problem that existing building block product can not meet energy saving building and green building requirement.
Embodiment
Embodiment 1,
The preparation method of large blended coal gangue sintering heat insulation building block of the present invention, described insulation blocks by weight, is made by following component: water: 15 parts; Coal gangue: 73 parts; Shale: 21 parts; Pore former: 6 parts; Described pore former is rice husk or stalk powder
.
Its preparation method is as follows:
A. coal gangue and shale are carried out to fragmentation, maximum particle diameter is no more than 2mm; Rice husk or stalk are pulverized, and largest particle is no more than 0.5mm, mixes by weight, common ageing, and digestion time is no less than 72 hours
;
B. utilize mould to make the building block of desired shape;
C. stripping forming, air-dry after routinely method fire.
The holllow building block block part thermal conductivity λ≤0.36W/mK producing, for the holllow building block that uses in the market regular convention formula to produce, block part thermal conductivity is 0.65W/mK; Heat-insulating property improves more than 44.62%.For 240mm * 190mm * 240mm, the porous building-brick that hole ratio is 43.42%, intensity can reach MU5.0, density≤850kg/m3.
Embodiment 2,
The preparation method of large blended coal gangue sintering heat insulation building block of the present invention, by weight: water: 13 parts; Coal gangue: 75 parts; Shale: 20 parts; Pore former: 5 parts; Described pore former is rice husk or stalk powder
.
Its preparation method:
A. coal gangue and shale carry out fragmentation, and maximum particle diameter is no more than 2mm; Rice husk or stalk are pulverized, and largest particle is no more than 0.5mm, mixes by weight, common ageing, and digestion time is no less than 72 hours;
B. utilize mould to make the building block of different shape;
C. stripping forming, air-dry after routinely method fire.
The holllow building block block part thermal conductivity λ≤0.36W/mK producing, for the holllow building block that uses in the market regular convention formula to produce, block part thermal conductivity is 0.65W/mK; Heat-insulating property improves more than 44.62%.For 240mm * 190mm * 240mm, the porous building-brick that hole ratio is 43.42%, intensity can reach MU5.0, density≤850kg/m3.
Example 3,
The preparation method of large blended coal gangue sintering heat insulation building block of the present invention, by weight: water: 15 parts; Coal gangue: 76 parts; Shale: 19 parts; Pore former: 5 parts; Described pore former is rice husk or stalk powder.
Its preparation method:
A. coal gangue and shale carry out fragmentation, and maximum particle diameter is no more than 2mm; Rice husk or stalk are pulverized, and largest particle is no more than 0.5mm, mixes by weight, common ageing, and digestion time is no less than 72 hours;
B. utilize mould to make the building block of different shape;
C. stripping forming, air-dry after routinely method fire.
The holllow building block block part thermal conductivity λ≤0.36W/mK producing, for the holllow building block that uses in the market regular convention formula to produce, block part thermal conductivity is 0.65W/mK; Heat-insulating property improves more than 44.62%.For 240mm * 190mm * 240mm, the porous building-brick that hole ratio is 43.42%, intensity can reach MU5.0, density≤850kg/m3.
Claims (2)
1. a preparation method for large blended coal gangue sintering heat insulation building block, is characterized in that: described insulation blocks by weight, is made by following component: water: 12 ~ 17 parts; Coal gangue: 73 ~ 76 parts; Shale: 19 ~ 21 parts; Pore former: 5 ~ 6 parts;
Its preparation method is as follows:
A. coal gangue and shale are carried out to fragmentation, maximum particle diameter is no more than 2mm; Pore former is pulverized, and largest particle is no more than 0.5mm, mixes by weight, common ageing, and digestion time is no less than 72 hours
;
B. utilize mould to make the building block of desired shape;
C. stripping forming, air-dry after routinely method fire.
2. the preparation method of large blended coal gangue sintering heat insulation building block according to claim 1, is characterized in that: described pore former is rice husk or stalk powder
.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201410343079.8A CN104119100A (en) | 2014-07-18 | 2014-07-18 | Preparation method of high-volume coal gangue sintering heat-insulating building block |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731999A (en) * | 2016-02-20 | 2016-07-06 | 襄垣县同济建材有限责任公司 | Coal gangue sintered self-insulation high-strength anti-seismic rectangular perforated bricks and manufacturing method thereof |
| CN108069700A (en) * | 2017-11-16 | 2018-05-25 | 湖州南浔凤强木业有限公司 | A kind of corrosion-resistant imitated wood floor board brick and preparation method thereof of corridor along the river |
| CN108249951A (en) * | 2018-02-07 | 2018-07-06 | 广东英超陶瓷有限公司 | A kind of preparation method for the water-permeable brick that changes colour |
| CN111099916A (en) * | 2019-03-14 | 2020-05-05 | 西安煤科动力科技有限公司 | Microporous light sintered brick and preparation method thereof |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450026A (en) * | 2003-03-06 | 2003-10-22 | 李肖平 | Building material with high blended coal gangue and making method thereof |
| CN101643365A (en) * | 2009-09-01 | 2010-02-10 | 武汉理工大学 | Preparation method of self-heat-insulating bearing sintered porous blocks |
| CN101672083A (en) * | 2009-08-14 | 2010-03-17 | 沈正 | Method for producing self-insulation baked brick by using pure coal gangue |
| CN102219544A (en) * | 2011-05-17 | 2011-10-19 | 平顶山市君昌胜建材有限责任公司 | Gangue perforated brick and preparation method thereof |
-
2014
- 2014-07-18 CN CN201410343079.8A patent/CN104119100A/en active Pending
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1450026A (en) * | 2003-03-06 | 2003-10-22 | 李肖平 | Building material with high blended coal gangue and making method thereof |
| CN101672083A (en) * | 2009-08-14 | 2010-03-17 | 沈正 | Method for producing self-insulation baked brick by using pure coal gangue |
| CN101643365A (en) * | 2009-09-01 | 2010-02-10 | 武汉理工大学 | Preparation method of self-heat-insulating bearing sintered porous blocks |
| CN102219544A (en) * | 2011-05-17 | 2011-10-19 | 平顶山市君昌胜建材有限责任公司 | Gangue perforated brick and preparation method thereof |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105731999A (en) * | 2016-02-20 | 2016-07-06 | 襄垣县同济建材有限责任公司 | Coal gangue sintered self-insulation high-strength anti-seismic rectangular perforated bricks and manufacturing method thereof |
| CN108069700A (en) * | 2017-11-16 | 2018-05-25 | 湖州南浔凤强木业有限公司 | A kind of corrosion-resistant imitated wood floor board brick and preparation method thereof of corridor along the river |
| CN108249951A (en) * | 2018-02-07 | 2018-07-06 | 广东英超陶瓷有限公司 | A kind of preparation method for the water-permeable brick that changes colour |
| CN108249951B (en) * | 2018-02-07 | 2020-06-23 | 广东英超陶瓷有限公司 | Preparation method of color-changing water permeable brick |
| CN111099916A (en) * | 2019-03-14 | 2020-05-05 | 西安煤科动力科技有限公司 | Microporous light sintered brick and preparation method thereof |
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Application publication date: 20141029 |