Semi-red mud water permeable brick and preparation method thereof

A technology for permeable bricks and red mud, applied in clay products, other household appliances, applications, etc., can solve the problems of heavy metal dissolution irradiation coefficient, difficult to guarantee safety, limited consumption of red mud, etc., to achieve synergistic consumption, reduce The effect of reducing production cost and energy consumption

Inactive Publication Date: 2019-08-06
SHANDONG UNIV OF TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Most of the red mud permeable bricks currently reported use less red mud, and the weight ratio does not exceed 30%. The safety of pre-calcined red mud permeable bricks is difficult to guarantee, and there may be risks of heavy metal dissolution or high radiation coefficient; while pre-calcined aggregate permeable bricks often require high process energy consumption and high production costs

Method used

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  • Semi-red mud water permeable brick and preparation method thereof
  • Semi-red mud water permeable brick and preparation method thereof
  • Semi-red mud water permeable brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] This embodiment provides a semi-red mud permeable brick, and its preparation raw materials include:

[0044] 45 parts of red mud, 8 parts of bentonite, 45 parts of waste ceramic particle aggregate, 6 parts of granite waste, and 7 parts of water glass solution.

[0045] The mass concentration of water glass solution is 25%; the particle size of granite waste is 325 mesh; the particle size of bentonite is 325 mesh.

[0046] This embodiment also provides a method for preparing semi-red mud permeable bricks, comprising the following steps:

[0047]Mix red mud, bentonite, waste ceramic granular aggregate, granite waste and water glass solution evenly to obtain a permeable brick mixture;

[0048] Fill the permeable brick mixture in the metal brick mold of the press, and pressurize it at 45MPa;

[0049] The pressed bricks are dried at 110°C for 9 hours, and then calcined at 1080°C for 1.5 hours to make semi-red mud permeable bricks.

[0050] The semi-red mud permeable brick...

Embodiment 2

[0083] This embodiment provides a semi-red mud permeable brick, and its preparation raw materials include:

[0084] 50 parts of red mud, 10 parts of Suzhou soil, 50 parts of waste high alumina refractory aggregate, 8 parts of feldspar, and 8 parts of silica sol solution.

[0085] The mass concentration of silica sol solution is 20%; the particle size of feldspar is 325 mesh; the particle size of Suzhou soil is 325 mesh.

[0086] This embodiment also provides a method for preparing semi-red mud permeable bricks, comprising the following steps:

[0087] Mix red mud, Suzhou soil, waste high alumina refractory aggregate, feldspar and silica sol solution evenly to obtain a permeable brick mixture;

[0088] Fill the permeable brick mixture in the metal brick mold of the press, and pressurize it at 60MPa;

[0089] The pressed bricks are dried at 120°C for 10 hours, and then calcined at 980°C for 2 hours to make semi-red mud permeable bricks.

[0090] The semi-red mud permeable bri...

Embodiment 3

[0094] This embodiment provides a semi-red mud permeable brick, and its preparation raw materials include:

[0095] 40 parts of red mud, 5 parts of silicon-aluminum additives, 45 parts of ceramic tailings aggregate, 5 parts of granite waste, and 5 parts of water glass solution.

[0096] The above-mentioned silicon-aluminum additives all include 80% by weight of plastic clay, 20% by weight of waste glass powder, and the particle size is 325 mesh.

[0097] The mass concentration of water glass solution is 30%.

[0098] Granite waste with a particle size of 325 mesh.

[0099] This embodiment also provides a method for preparing semi-red mud permeable bricks, comprising the following steps:

[0100] Mix red mud, silicon-aluminum additives, ceramic tailings aggregate, granite waste and water glass solution evenly to obtain a permeable brick mixture;

[0101] Fill the permeable brick mixture in the metal brick mold of the press, and pressurize it at 30MPa;

[0102] The pressed b...

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Abstract

The invention relates to a semi-red mud water permeable brick which comprises 40-50 parts of red mud; 5-10 parts of a silicon-aluminum additive; 40-50 parts of an additional aggregate; 5-8 parts of flux and 5-8 parts of an auxiliary adhesive. The semi-red mud water permeable brick has large red mud consumption, can cooperatively treat solid wastes in industries such as ceramics, refractory materials, metallurgy and the like, and is low in cost, high in safety and attractive in appearance, and all technical requirements conform to industry standard requirements of water permeable bricks.

Description

technical field [0001] The invention relates to the technical field of semi-red mud permeable bricks, in particular to a semi-red mud permeable brick and a preparation method thereof. Background technique [0002] Red mud is the polluting waste slag discharged when the aluminum industry extracts alumina. There is a huge stockpile of red mud in my country, and red mud contains alkali metals and heavy metals. Harmful to vegetation and groundwater. At present, the comprehensive utilization rate of red mud in our country is low, only 4%. Therefore, the resource utilization of red mud is imminent. [0003] Most of the red mud permeable bricks currently reported use less red mud, and the weight ratio does not exceed 30%. The safety of pre-calcined red mud permeable bricks is difficult to guarantee, and there may be risks of heavy metal dissolution or high radiation coefficient; while pre-calcined aggregate permeable bricks often require high process energy consumption and high pr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B33/13
CPCC04B33/131C04B33/1322C04B33/1324C04B2235/3418C04B2235/3427C04B2235/96Y02P40/60
Inventor 乐红志李洪达杜庆洋李蛟孙海滨郭学杨赞中
Owner SHANDONG UNIV OF TECH
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