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Environment-friendly microporous brick prepared by comprehensive utilization of solid wastes and preparation method of environment-friendly microporous brick

A solid waste and environmental protection technology, applied in applications, household appliances, clay products, etc., can solve the problems of heavy weight, high energy consumption and low utilization rate of microporous bricks, reducing energy consumption, reducing self-weight, ensuring The effect of sintering strength

Inactive Publication Date: 2020-01-24
GUANGREEN ENVIRONMENTAL PROTECTION ENG
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, most utilization methods have problems such as low utilization rate and insufficient marketization.
[0005] In the prior art, the weight of microporous bricks is relatively heavy, and the sintering strength is not good enough. In addition, the current sintering temperature of microporous bricks is 1000°C to 1200°C, which belongs to medium-high temperature sintering, and consumes a lot of energy, which makes tunnel kiln construction and Higher sintering cost

Method used

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  • Environment-friendly microporous brick prepared by comprehensive utilization of solid wastes and preparation method of environment-friendly microporous brick
  • Environment-friendly microporous brick prepared by comprehensive utilization of solid wastes and preparation method of environment-friendly microporous brick
  • Environment-friendly microporous brick prepared by comprehensive utilization of solid wastes and preparation method of environment-friendly microporous brick

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0074] An environmentally friendly microporous brick prepared by comprehensive utilization of solid waste, which includes the following raw materials in weight percentage:

[0075]

[0076] Among them, biomass particles are made of crop straw.

[0077] Wherein, the crop straw is one or a combination of any two or more of corn straw, wheat straw, rice straw, cotton straw, soybean straw or sorghum straw.

[0078] Wherein, the metal chelating agent is polyacrylic acid.

[0079] Wherein, the sintering aid is one of aluminum oxide, zinc oxide or magnesium fluoride or a combination of any two or more.

[0080] The above-mentioned preparation method of an environmentally friendly microporous brick prepared by comprehensive utilization of solid waste comprises the following steps:

[0081] The first step, mine washing sludge pretreatment:

[0082] Step 1. Centrifugal separation: Centrifuge the mine washing sludge to separate sand and stones with a certain particle size to obtain...

Embodiment 2

[0103] An environmentally friendly microporous brick prepared by comprehensive utilization of solid waste, which includes the following raw materials in weight percentage:

[0104]

[0105] Among them, biomass particles are made of crop straw.

[0106] In this embodiment, the crop straw is a combination of corn straw, wheat straw, rice straw, cotton straw, soybean straw and sorghum straw.

[0107] Wherein, the metal chelating agent is polyacrylic acid.

[0108] Among them, the sintering aid is magnesium fluoride.

[0109] The above-mentioned preparation method of an environmentally friendly microporous brick prepared by comprehensive utilization of solid waste comprises the following steps:

[0110] The first step, mine washing sludge pretreatment:

[0111] Step 1. Centrifugal separation: pump the mine washing sludge into a rotary bucket centrifuge for centrifugal separation, so as to separate the sand with a particle size of more than 1mm, and obtain the mine washing slud...

Embodiment 3

[0132] An environmentally friendly microporous brick prepared by comprehensive utilization of solid waste, which includes the following raw materials in weight percentage:

[0133]

[0134] Among them, biomass particles are made of crop straw.

[0135] In this embodiment, the crop stalks are corn stalks.

[0136] Wherein, the metal chelating agent is polyacrylic acid.

[0137] Wherein, the sintering aid is a combination of aluminum oxide and zinc oxide.

[0138] The above-mentioned preparation method of an environmentally friendly microporous brick prepared by comprehensive utilization of solid waste comprises the following steps:

[0139] The first step, mine washing sludge pretreatment:

[0140] Step 1. Centrifugal separation: pump the mine washing sludge into a rotary bucket centrifuge for centrifugal separation, so as to separate the sand with a particle size of more than 1mm, and obtain the mine washing sludge slurry;

[0141] Step 2. Storage and homogenization: In...

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Abstract

The invention relates to the technical field of resource utilization of solid wastes and in particular relates to an environment-friendly microporous brick prepared by comprehensive utilization of thesolid wastes and a preparation method of the environment-friendly microporous brick. The environment-friendly microporous brick prepared by comprehensive utilization of the solid wastes comprises mining ore washing sludge cakes, sewage treatment plant sludge cakes, biomass particles, a metal chelating agent and sintering aids. The environment-friendly microporous brick sufficiently utilizes richminerals and inorganic matter in mining ore washing sludge, rich organic matter in sludge of sewage treatment plants and high heat values of the biomass particles, both the self weight of the microporous brick is reduced and the sintering strength of the microporous brick is ensured, and meanwhile, energy consumption of external heat energy is reduced; and meanwhile, the problem of comprehensive utilization of solid wastes such as mining ore washing sludge, sewage treatment plant sludge and crop straws is solved. The preparation method of the environment-friendly microporous brick prepared bycomprehensive utilization of the solid wastes has the characteristics of being simple in process, low in production cost and applicable to large-scale production.

Description

technical field [0001] The invention relates to the technical field of resource utilization of solid waste, in particular to an environmentally friendly microporous brick prepared by comprehensive utilization of solid waste and a preparation method thereof. Background technique [0002] The traditional mine washing sludge treatment method is mainly to realize the separation of mud and water through natural settlement, and later developed to add PAC (polyaluminum chloride), PAFC (polyaluminum ferric chloride), PAM (polyacrylamide) to the mud water And other chemicals to accelerate sludge precipitation, and then through coagulation and stirring, centrifugal filter (or plate and frame filter), etc., to form a mud cake with low moisture content for landfill treatment. Because there is no resource utilization of sludge, waste is caused, which does not meet the requirements of green mines, clean production and comprehensive utilization of resources. [0003] Traditional domestic ...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B38/06
CPCC04B33/1321C04B33/1328C04B38/0645C04B2235/3217C04B2235/3284C04B2235/445Y02P40/60
Inventor 杨风戴双建杨嘉骅徐祖宏刘树徽齐志林郭玉杰
Owner GUANGREEN ENVIRONMENTAL PROTECTION ENG
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