Microporous light sintered brick and preparation method thereof

A sintered brick, lightweight technology, applied in ceramic products, clay products, other household appliances, etc., can solve problems such as unavailability of coal slime, and achieve the effects of low production cost, reduced pollution, and reduced quality

Inactive Publication Date: 2020-05-08
西安煤科动力科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, there are still a large amount of slime that cannot be utilized

Method used

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  • Microporous light sintered brick and preparation method thereof
  • Microporous light sintered brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0063] The raw material of the microporous light-weight sintered brick consists of tailings and a pore-forming agent. Wherein when the pore-forming agent is straw powder, the mass percentage of the tailings is 85% and the mass percentage of the pore-forming agent is 15%; The mass percentage is: SiO 2 45%, Al 2 o 3 25%, Fe 2 o 3 is 5%, CaO is 5%, MgO is 3%, and the rest are other elements; the plasticity index of the tailings is 11, and the calorific value is 1.6MJ / kg. Tailings particle size <0.1mm, 85% of particle size <0.043mm. The loss on ignition after mixing the tailings with the pore forming agent is 10%.

[0064] The preparation method of the microporous lightweight sintered brick is as follows:

[0065] Step 1: Transport the tailings to a coal slime dryer for drying until the moisture content is 15-18%, and the coal slime drying equipment is a coal slime drum drying system;

[0066] Step 2: crush the straw with a vertical pulverizer and feed it into a ball mill ...

Embodiment 2

[0073] The raw material of the microporous light-weight sintered brick consists of tailings and a pore-forming agent. Wherein when the pore-forming agent is sawdust, the mass percentage of the tailings is 90%, and the mass percentage of sawdust is 10%; the tailings are directly obtained from the coal slime after being sorted by a sorting column, and the mass percentage of each component in the tailings is For: SiO 2 55%, Al 2 o 3 20%, Fe 2 o 3 is 4%, CaO is 4%, MgO is 2%, and the rest are other elements; the plasticity index of the tailings is 15, and the calorific value is 2.0MJ / kg. Tailings particle size <0.1mm, 85% of particle size <0.043mm. The loss on ignition after the ratio of tailings and sawdust is 8%.

[0074] The preparation method of the microporous lightweight sintered brick is as follows:

[0075] Step 1: Transport the tailings to a coal slime dryer for drying until the moisture content is 15-18%, and the coal slime drying equipment is a coal slime drum dr...

Embodiment 3

[0083] The raw material of the microporous light-weight sintered brick consists of tailings and a pore-forming agent. Wherein when the pore-forming agent is polystyrene, the mass percentage of the tailings is 95%, and the mass percentage of polystyrene is 5%; The mass percentage of the composition is: SiO 2 65%, Al 2 o 3 18%, Fe 2 o 3 is 3%, CaO is 3%, MgO is 1%, and the rest are other elements; the plasticity index of the tailings is 18, and the calorific value is 2.5MJ / kg. Tailings particle size <0.1mm, 85% of particle size <0.043mm. The loss on ignition after mixing the tailings with polystyrene is 6%.

[0084] The preparation method of the microporous lightweight sintered brick is as follows:

[0085] Step 1: Transport the tailings to a coal slime dryer for drying until the moisture content ranges from 15 to 18%, and the coal slime drying equipment is a coal slime drum drying system;

[0086] Step 2: Mix the above tailings and polystyrene in proportion, and then tr...

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Abstract

The invention relates to a microporous light sintered brick and a preparation method thereof. The microporous light sintered brick is prepared from tailings and a pore-forming agent. The pore-formingagent is at least one of straw powder, sawdust and polystyrene; raw materials of the microporous light sintered brick comprise the components in percentage by mass: 85-95% of tailings and 5-15% of thepore-forming agent; the tailings are directly obtained after coal slime is sorted through sorting equipment, and the tailings comprise the components in percentage by mass: 45-65% of SiO2, 18-25% ofAl2O3, 3-5% of Fe2O3, 3-5% of CaO, 1-3% of MgO and the balance being other elements. The plasticity index of the tailings is 11-18, and the calorific value of the tailings is 1.6-2.5 MJ / kg. The performance of the microporous light sintered brick meets or even exceeds the national standard, and recycling of the coal slime tailings is achieved. The preparation method is simple in process, and the time cost is greatly saved.

Description

technical field [0001] The invention belongs to the field of wall material production, and in particular relates to a microporous lightweight fired brick and a preparation method thereof. Background technique [0002] Lightweight microporous sintered bricks currently use shale, fly ash, coal gangue mixed with sludge, waste residue, sawdust, and straw as pore-forming agents to modify the micropores of traditional bricks to increase the porosity of sintered bricks and improve the interior of the product. The distribution of pore size realizes the functions of energy saving, environmental protection, light weight, sound insulation and heat preservation. Although the use of shale as the main material saves arable land, the exploitation of raw materials still destroys vegetation and the ecological environment. Using fly ash and coal gangue as the main materials, the brick body has heavy weight, frost, black core, lime burst, weak weathering resistance, and low compressive streng...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B38/06C04B33/132B03D1/02B03D1/14
CPCC04B38/0675C04B33/1324C04B33/1328B03D1/02B03D1/1406C04B2235/656C04B2235/6567C04B2235/96C04B38/0074Y02P40/60
Inventor 张岩斌
Owner 西安煤科动力科技有限公司
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