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Full-washing coal gangue self-thermal insulation building block and manufacturing method thereof

A technology of self-insulating blocks and coal gangue, which is applied to ceramic products, other household appliances, household appliances, etc., can solve the problems of soil pollution, air pollution, underground water quality, spontaneous combustion, etc., and achieve low heat transfer coefficient, easy to break and old The effect of streamlining and reducing costs

Inactive Publication Date: 2016-07-06
HUAIBEI XINYU IND & TRADE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Coal gangue has been stored for a long time, occupying a large amount of land, and at the same time causing spontaneous combustion, polluting the air and groundwater quality, and soil pollution.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] The self-insulating block is made of the following components in parts by weight: water: 10 parts; water-washed coal gangue: 87 parts; pore-forming agent: 3 parts; the pore-forming agent is straw.

[0030] Preparation:

[0031] 1. Crush the fully washed coal gangue until the particle size is less than 1mm, and crush the pore-forming agent until the particle size is less than 2mm, mix the two evenly according to the mass ratio, add water to seal and age, and the aging time at room temperature is 72 hours;

[0032] 2. The mixture is extruded by a bipolar vacuum hard plastic extruder, the vacuum degree is -0.093 MPa, the extrusion pressure is 3.5-4.5 MPa, and cut into billets;

[0033] 3. After low temperature 45C 0 ~100C 0 Drying, the water content of the green body is controlled within 3%, at 1050C 0 ~1150C 0 Sintered molding.

[0034] The appearance size of the produced self-insulation block: 240mm×190mm×240mm; the thermal conductivity K value of the block is 0.97W...

Embodiment 2

[0036] The self-insulating block is made of the following components in parts by weight: water: 10 parts; water-washed coal gangue: 85 parts; pore-forming agent: 5 parts; the pore-forming agent is sawdust.

[0037] Preparation:

[0038] 1. Crush the fully washed coal gangue until the particle size is less than 1.5mm, crush the pore-forming agent until the particle size is less than 2mm, mix the two according to the mass ratio, add water and stir evenly, control the moisture content between 9-11%, and seal together Aging, the aging time is 4 days at normal temperature;

[0039] 2. The aged mixture is extruded through a bipolar vacuum hard plastic extruder, with a vacuum degree of -0.095MPa and an extrusion pressure of 4.0MPa, and cut into billets;

[0040] 3. After low temperature 45C 0 ~100C 0 Drying, the water content of the green body is controlled within 3%, at 1050C 0 ~1150C 0 Sintered molding.

[0041] The appearance size of the produced self-insulation block: 240mm...

Embodiment 3

[0043] The self-insulating block is made of the following components in parts by weight: water: 11 parts; washed coal gangue: 86 parts; pore-forming agent: 3 parts; the pore-forming agent is wheat husk.

[0044] Preparation:

[0045] 1. Crush the fully washed coal gangue until the particle size is less than 2mm, crush the pore-forming agent until the particle size is less than 1mm, mix the two with water according to the mass ratio, and control the moisture content between 9-11%. The aging time is 4 days at room temperature;

[0046] 2. The aged mixture is extruded through a bipolar vacuum hard plastic extruder, the vacuum degree is -0.098MPa, the extrusion pressure is 3.5MPa, and cut into strips;

[0047] 3. After low temperature 41C 0 ~90C 0 Drying, the water content of the green body is controlled within 3%, at 1050C 0 ~1150C 0 Sintered molding.

[0048] The appearance size of the produced self-insulating blocks: 240mm×190mm×240mm; the thermal conductivity K value of th...

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Abstract

The invention discloses a full-washing coal gangue self-thermal insulation building block and a manufacturing method thereof.The full-washing coal gangue self-thermal insulation building block is characterized by being prepared from, by mass, 10-15% of water, 80-88% of washing coal gangue and 2-5% of a pore-forming agent.The manufacturing method comprises the steps of smashing, water adding to achieving uniform stirring, normal-temperature aging, extrusion, slitting, low-temperature drying, high-temperature sintering and the like.The adopted raw materials are convenient to obtain, the burning consumption of the self-thermal insulation building block can be effectively lowered, the production cost is lowered, the mineral waste utilization rate is enlarged, and environmental protection is achieved.The building block is high in strength level and low in density level, water absorption rate and heat transfer coefficient, the requirement for that a public building in a hot summer and cold winter area saves energy by 65%, and the wall heat transfer coefficient is smaller than 1 W(m<2>.k) according to the national building energy-saving design standard can be met, the technology is simple, the production cost is low, popularization and application are easy.

Description

technical field [0001] The invention relates to a building block and a preparation method thereof, more specifically to a fully-washed coal gangue self-insulating block suitable for construction engineering and a preparation method thereof. Background technique [0002] Coal gangue is solid waste generated during coal mining and washing and processing, and is one of the largest industrial solid wastes currently discharged. The annual discharge amount is equivalent to about 10% of the coal output of the year. At present, more than 4.5 billion tons have been piled up, covering an area of ​​about 12,000 hectares. It is currently one of the largest industrial solid wastes in my country. Coal gangue has been stockpiled for a long time, occupying a large amount of land, and at the same time causing spontaneous combustion, polluting the air and groundwater, and soil pollution. [0003] The existing technology of using coal gangue to prepare self-insulating blocks basically needs t...

Claims

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Application Information

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IPC IPC(8): C04B38/06
CPCC04B38/06
Inventor 陈善荣颜卫平沈明道耿英奎陈晨
Owner HUAIBEI XINYU IND & TRADE
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