Fired brick and preparation method thereof

A technology for sintering bricks and formulations, applied in the fields of resources, environment and building materials, can solve problems such as compressive strength and weathering resistance that cannot meet requirements, and achieve the effects of protecting the environment, reducing consumption, and improving plasticity index.

Inactive Publication Date: 2015-09-30
平泉市莱蒂建材有限公司 +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] However, at present, the properties of bricks made from iron tailings, such as compressive strength and weathering resistance, cannot meet the needs.

Method used

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  • Fired brick and preparation method thereof
  • Fired brick and preparation method thereof
  • Fired brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0065] The raw materials of fired bricks are as follows:

[0066]

[0067] The production method of described sintered brick, comprises the steps:

[0068] (1) Mix 60 parts of magnetite tailings with a particle size of less than 7.0 mm and 40 parts of coal gangue powder with a particle size of less than 3.0 mm, then add 3 parts of sludge and 13 parts of water, after wetting and premixing, Send it into the mud refining machine for mixing, stirring, and mud refining to obtain the raw material of fired bricks;

[0069] (2) Put the sintered brick raw material into the brick making machine and vacuum extrude it into a green body. The shape of the green body is a cuboid. After cutting and stacking, the green body is sent to the orbital kiln and dried by the exhaust gas of the wheel kiln at 180°C. Dry for 5 hours to obtain a dry green body, and the tail gas generated during the drying process is purified and then emptied;

[0070] (3) Put the dry body into the wheel kiln, sinter...

Embodiment 2

[0072] The raw materials of fired bricks are as follows:

[0073]

[0074] The production method of described sintered brick, comprises the steps:

[0075] (1) 75 parts of ultra-poor vanadium-titanium magnetite sand with a particle size of less than 10.0mm and 25 parts of coal gangue powder with a particle size of less than 2.0mm are mixed, then add 2 parts of sludge, 2 parts of tailings mud and 10 parts of water, through After wetting and pre-mixing, send it to the mud mixer for mixing, stirring, and mud refining to obtain the raw materials for sintered bricks;

[0076] (2) Put the sintered brick raw material into the brick making machine and vacuum extrude it into a green body. The shape of the green body is round. After cutting and stacking, the green body is sent to the orbital kiln and passed through the exhaust gas of the wheel kiln at 190°C Dry for 4 hours to obtain a dry green body, and the tail gas generated during the drying process is purified and then emptied; ...

Embodiment 3

[0079] The raw materials of fired bricks are as follows:

[0080]

[0081] The production method of described sintered brick, comprises the steps:

[0082] (1) Mix 80 parts of hematite tailings with a particle size of less than 8.0mm and 20 parts of coal gangue powder with a particle size of less than 5.0mm, then add 1.2 parts of sludge, 4.8 parts of tailings mud and 15 parts of water, and moisten Wet, after premixing, send it to the mud mixer for mixing, stirring, and mud refining to obtain raw materials for fired bricks;

[0083] (2) Put the sintered brick raw material into the brick making machine and vacuum extrude it into a green body. The shape of the green body is round. After cutting and stacking, the green body is sent to the orbital kiln and passed through the exhaust gas of the wheel kiln at 200°C. Dry for 2 hours to obtain a dry body, and the tail gas generated during the drying process is purified and then emptied;

[0084] (3) Put the dry body into the wheel...

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Abstract

The invention provides a fired brick and a preparation method thereof. The fired brick mainly comprises the following raw materials in weight part: 40-80 parts of iron tailings, 20-60 parts of gangue, 1-10 parts of an auxiliary agent and 7-25 parts of water. The sum of the weight parts of the iron tailings and the gangue is 100 parts. The sludge and / or the mud tailings is adopted as the auxiliary agent. The fired brick is porous, large in compressive strength and good in weather resistance. The radionuclide content of the fired brick is in line with the national standard requirements. Large amounts of solid wastes in metallurgical mines and industrial waste residues can be fully utilized to prepare novel tailings-based building materials. Therefore, the fuel is saved and resources are fully utilized. The circular economy is developed and the environment is protected.

Description

technical field [0001] The invention belongs to the technical field of resource environment and building materials, and relates to a sintered brick and a preparation method thereof, in particular to a sintered brick with iron tailings as a raw material and a preparation method thereof. Background technique [0002] Clay brick is a traditional building material, which has a long history of use and is deeply loved by the people. However, in order to protect precious land resources, the country requires effective energy conservation and emission reduction to protect our living environment. Our country is in the construction industry. The use of ordinary clay fired bricks is prohibited in my country, and the development of clay fired brick substitute products and new wall materials is strongly advocated. [0003] A large amount of tailings are produced during the development of mineral resources. For example, the amount of iron tailings produced in the process of mineral processi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132
CPCY02P40/60
Inventor 罗立群董毅张明宇姚宝军
Owner 平泉市莱蒂建材有限公司
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