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Sintered brick adopting germanium-extracted lignite tailings as main material and preparation method of sintered brick

A technology of sintered bricks as the main raw material, which is applied in the field of building materials, can solve problems such as unreported sintered bricks, and achieve the effects of resource development and environmental protection, cost reduction, and promotion of green production

Inactive Publication Date: 2014-08-06
LINCANG TEACHERS COLLEGE
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

For example: using lignite to extract germanium tailings to prepare sintered ceramsite and non-fired ceramsite, but the research on using lignite to extract germanium tailings as raw materials to prepare sintered bricks has not been reported

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Example 1: The composition of the fired brick with germanium extraction tailings from lignite as the main raw material and its weight percentages are: 65wt% germanium extraction tailings from lignite, 10wt% kaolin, 13wt% fly ash, and 12wt% water.

[0024] The specific preparation steps of the sintered brick with lignite germanium tailings as the main raw material are:

[0025] (1) Pretreatment of raw materials: drying lignite germanium tailings and kaolin to a moisture content of 5wt%, and then crushing to a raw material with a particle size of less than 3mm > 80%;

[0026] (2) Stirring and mixing: Mix and stir lignite germanium tailings, kaolin and fly ash for 5 minutes, add water, stir again for 10 minutes, and mix evenly to obtain a mixture;

[0027] (3) Forming: Press the mixture into strips with a vacuum brick extruder to obtain the billets extruded into strips, and use the vertical cutting machine to make bricks from the obtained blanks (the extrusion pressure is ...

Embodiment 2

[0032] Example 2: The sintered brick composition and weight percentages of the sintered bricks which use germanium extraction tailings from lignite as main raw materials are: 80wt% germanium extraction tailings from lignite, 5wt% kaolin, 5wt% fly ash, and 10wt% water.

[0033] The specific preparation steps of the sintered brick with lignite germanium tailings as the main raw material are:

[0034] (1) Pretreatment of raw materials: drying lignite germanium extraction tailings and kaolin to moisture content of 3wt%, and then crushing to raw materials with a particle size of less than 3mm>80%;

[0035] (2) Stirring and mixing: Mix and stir lignite germanium tailings, kaolin and fly ash for 5 minutes, add water, stir again for 8 minutes, and mix evenly to obtain a mixture;

[0036] (3) Forming: Press the mixture into strips with a vacuum brick extruder to obtain billets that are extruded into strips, and use the vertical cutting machine to make bricks from the obtained blanks (...

Embodiment 3

[0041] Example 3: The sintered brick composition and weight percentages of the sintered bricks which use germanium extraction tailings from lignite as main raw materials are: 70wt% germanium extraction tailings from lignite, 10wt% kaolin, 10wt% fly ash, and 10wt% water.

[0042] The specific preparation steps of the sintered brick with lignite germanium tailings as the main raw material are:

[0043] (1) Pretreatment of raw materials: drying lignite germanium extraction tailings and kaolin to a moisture content of 4wt%, and then crushing to a raw material with a particle size of less than 3mm > 80%;

[0044] (2) Stirring and mixing: mix and stir lignite germanium tailings, kaolin and fly ash for 5 minutes, add water, stir again for 5-10 minutes, and mix evenly to obtain a mixture;

[0045] (3) Forming: Press the mixture into strips with a vacuum brick extruder to obtain billets that are extruded into strips, and use the vertical cutting machine to make bricks from the obtained...

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Abstract

The invention discloses a sintered brick adopting germanium-extracted lignite tailings as a main material and a preparation method of the sintered brick. The sintered brick is prepared from the raw materials of the germanium-extracted lignite tailings, kaolin, fly ash, and water. The preparation method comprises the following steps: grinding the germanium-extracted lignite tailings; adding the kaolin, fly ash and water; uniformly stirring; forming through extrusion; cutting to obtain adobe; placing the adobe in a thermostatic drying box for drying to obtain dried adobe; placing the dried adobe in a muffle furnace for preheating and calcining; naturally cooling to obtain the sintered brick. The technology is simple, the tailing utilization ratio is high, and the product performance is high.

Description

technical field [0001] The invention relates to a sintered brick and a preparation method thereof, in particular to a sintered brick with germanium tailings extracted from lignite as a main raw material and a preparation method thereof, belonging to the technical field of building materials. Background technique [0002] In recent years, with the continuous development of my country's construction industry, building bricks, especially sintered bricks, have become the most used building materials due to their good compressive strength and low water absorption. my country consumes about 750 billion pieces of sintered bricks every year brick. In research at home and abroad, clay or fly ash are mainly used as raw materials to prepare sintered bricks (Zhang Kaiyuan, fly ash sintered bricks and its preparation method [P] CN101607815, 2009), and excessive mining of clay will destroy farmland, so the government stipulates The production and use of clay solid fired bricks is prohibit...

Claims

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Application Information

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IPC IPC(8): C04B30/00C04B18/12
CPCY02W30/91
Inventor 陈佳那金华李文华才晓玲赵丽霞谭丹英
Owner LINCANG TEACHERS COLLEGE
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