Fired brick prepared from sludge

A technology of sintering bricks and sludge, which is applied in the field of building bricks to achieve the effects of uniform combustion, good strength and low water absorption

Inactive Publication Date: 2012-06-13
BAOFENG COUNTY RENHE NEW BUILDING MATERIAL
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the different proportions and raw materials, the hardness, weathering resistance and lime bursting of bricks fired by many enterprises are not very good.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Example 1: A sludge sintered brick composed of the following raw materials in parts by weight ratio:

[0029] Sewage sludge with a moisture content of 70%-80%, 15 tons;

[0030] Shale with grain size ≤1mm, 52.5 tons;

[0031] Gangue with particle size ≤ 1mm, 35 tons;

[0032] The said shale is yellow shale, and its main chemical components are as follows:

[0033] Ferric oxide Magnesium oxide Calcium oxide Silicon dioxide Titanium dioxide Aluminum oxide Loss on ignition (Fe2O3) (MgO) (CaO) (SiO2) (TiO2) (Al2O3) (LOSS)

[0034] 4.26% 0.88% 1.04% 58.4% 0.80% 19.68% 9.42%

[0035] Prepared according to the following steps:

[0036] Step 1: Crush the raw materials first and pass through a 0.5mm sieve until the remaining materials are processed and set aside;

[0037] Step 2: Mix the raw material powders according to the proportion, add water until the water content of the mixture reaches 17-19% by weight, stir evenly, and age for 72 hours;

[0038] Step 3: Perform conventional blanking of...

Embodiment 2

[0040] Example 2: A sludge sintered brick composed of the following raw materials in parts by weight ratio:

[0041] Sewage sludge with a moisture content of 70%-80%, 5 tons;

[0042] Shale with grain size ≤1mm, 85 tons;

[0043] Gangue with particle size ≤1mm, 70 tons;

[0044] The said shale is yellow shale, and its main chemical components are as follows:

[0045] Ferric oxide Magnesium oxide Calcium oxide Silicon dioxide Titanium dioxide Aluminum oxide Loss on ignition (Fe2O3) (MgO) (CaO) (SiO2) (TiO2) (Al2O3) (LOSS)

[0046] 4.26% 0.88% 1.04% 58.4% 0.80% 19.68% 9.42%

[0047] Prepared according to the following steps:

[0048] Step 1: Crush the raw materials first and pass through a 0.5mm sieve until the remaining materials are processed and set aside;

[0049] Step 2: Mix the raw material powders according to the proportion, add water until the water content of the mixture reaches 17-19% by weight, stir evenly, and age for 72 hours;

[0050] Step 3: Perform conventional blanking of the...

Embodiment 3

[0052] Example 3: A sintered sludge brick, characterized in that it is composed of the following raw materials in parts by weight:

[0053] 25 tons of sewage sludge with a moisture content of 70%-80%;

[0054] Shale with grain size ≤1mm, 20 tons;

[0055] Gangue with particle size ≤1mm, 0 tons;

[0056] The said shale is yellow shale, and its main chemical components are as follows:

[0057] Ferric oxide Magnesium oxide Calcium oxide Silicon dioxide Titanium dioxide Aluminum oxide Loss on ignition

[0058] (Fe2O3) (MgO) (CaO) (SiO2) (TiO2) (Al2O3) (LOSS)

[0059] 4.26% 0.88% 1.04% 58.4% 0.80% 9.68% 9.42%

[0060] The preparation method steps are as follows:

[0061] Step 1: Crush the raw materials first and pass through a 0.5mm sieve until the remaining materials are processed and set aside;

[0062] Step 2: Mix the raw material powders according to the proportion, add water until the water content of the mixture reaches 17-19% by weight, stir evenly, and age for 72 hours;

[0063] Step 3: Pe...

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Abstract

The invention relates to a fired brick prepared from sludge produced by a sewage treatment plant. The fired brick prepared from sludge comprises: by weight, 5 to 25 parts of sludge, 20 to 85 parts of shale and 0 to 70 parts of gangue, wherein the sludge is yellow shale. A preparation method of the fired brick prepared from sludge comprises the following steps of crushing the raw materials, mixing the crushed raw materials according to the ratios, adding water into the mixture, stirring, carrying out aging, drying and carrying out calcination. The preparation method utilizes sludge produced by a sewage treatment plant, changes the sludge into things of value, and realizes cyclic utilization of sludge, environment purification and resource saving. The fired brick prepared by the preparation method satisfies the national standard, and has good plasticity, high strength and a good color.

Description

Technical field: [0001] The invention relates to the field of building bricks, in particular to a sludge sintered brick. Background technique: [0002] The development of urban industry has led to the gradual increase of urban sewage. With the increasing requirements of the country on industrial environmental protection, a large amount of sewage treatment sludge will be produced, and the storage and treatment of these sludge will increase the operating costs of related manufacturers. Improper treatment It will also pollute the environment again. If these sludges can be fully utilized, it will not only protect the environment and save resources, but also save manpower and financial resources, and save costs for enterprises. [0003] At present, in response to the national call, brick-making enterprises around the world have developed new building bricks to replace clay bricks. Because the chemical composition of clay, shale, and coal gangue is basically similar, many enter...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B30/00C04B18/30
CPCY02W30/91
Inventor 曹二虎田洪勋李军安王林郭圈营赵玉坤王建兵
Owner BAOFENG COUNTY RENHE NEW BUILDING MATERIAL
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