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Light brick and preparation method thereof

A light-weight brick and biomass technology, which is applied to ceramic products, clay products, and other household appliances, can solve the problems of low utilization efficiency of biomass and other resources, can not be effectively used, and waste the calorific value of coal gangue, etc., to achieve heat preservation And sound insulation effect, light weight, improve the effect of roasting effect

Active Publication Date: 2014-03-05
ELECTRIC POWER RES INST OF GUANGDONG POWER GRID +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] At present, the abundant coal resources have made great contributions to the rapid economic development of our country, but a large amount of "industrial waste" - coal gangue has also been produced in the process of coal production. A large amount of accumulated coal gangue not only occupies land resources, It will also release toxic gas and cause spontaneous combustion, and also waste the calorific value of coal gangue itself; kaolin tailings are solid waste generated during the beneficiation process of kaolin mines, which occupy a large amount of land resources because they cannot be effectively utilized; In addition, my country, as a traditional agricultural country, produces a large amount of biomass in agricultural production activities. Biomass is a renewable energy source, and its utilization and development prospects are extremely broad.
Nowadays, due to the limitations of technology and other reasons, the utilization efficiency of sludge, coal gangue, biomass and other resources is low. Therefore, research and development of a new technology is of great significance to the construction of an environment-friendly, resource-saving society.
[0004] In the prior art, sludge bricks are mainly focused on how to better prepare the proportion and types of sludge and its additives, and the NO x and SO x but little attention

Method used

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  • Light brick and preparation method thereof
  • Light brick and preparation method thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0043] A lightweight brick, mainly prepared from the following raw materials in parts by weight:

[0044] 30 parts of domestic sludge with a water content of 80%,

[0045] 40 parts of coal gangue,

[0046] Kaolin tailings 20 parts,

[0047] Biomass - straw 5 parts,

[0048] 5 parts of sulfur-fixing, nitrogen-fixing and odor-removing agent,

[0049] The sulfur-fixing, nitrogen-fixing and odor-removing agent is composed of 95wt% calcium oxide and 5wt% potassium carbonate powder with particle size less than 0.1mm.

[0050] The preparation method of above-mentioned lightweight brick, comprises the following steps:

[0051] (1) Weigh the coal gangue, kaolin tailings, straw, sulfur-fixing and nitrogen-fixing agent according to the above parts by weight, and crush them until the particle size is less than 2mm;

[0052] (2) Weigh the sludge according to the above parts by weight, and add the pulverized coal gangue, kaolin tailings, biomass and sulfur and nitrogen fixation agent i...

Embodiment 2

[0057] Lightweight bricks are mainly prepared from the following raw materials in parts by weight:

[0058] 20 parts of domestic sludge with a water content of 60%,

[0059] 50 parts of coal gangue,

[0060] 30 parts of kaolin tailings,

[0061] Biomass - straw 5 parts,

[0062] 10 parts of sulfur-fixing, nitrogen-fixing and odor-removing agent,

[0063] The sulfur-fixing, nitrogen-fixing and odor-removing agent is composed of 90wt% calcium oxide and 10wt% potassium carbonate powder with particle size less than 0.1mm.

[0064] The preparation method of the above-mentioned lightweight brick is basically the same as that of Example 1, except that the aging time in step (3) is 48 hours, and the firing temperature in step (5) is 1000° C. for 3 hours.

Embodiment 3

[0066]Lightweight bricks are mainly prepared from the following raw materials in parts by weight:

[0067] 10 parts of domestic sludge with a water content of 80%,

[0068] 20 parts of coal gangue,

[0069] Kaolin tailings 10 parts,

[0070] Biomass - 1 part of straw,

[0071] 1 part of sulfur-fixing, nitrogen-fixing and odor-removing agent,

[0072] The sulfur-fixing, nitrogen-fixing and odor-removing agent is composed of 99wt% calcium oxide and 1wt% potassium carbonate powder with particle size less than 0.1mm.

[0073] The preparation method of the above-mentioned lightweight brick is basically the same as that of Example 1, except that the aging time in step (3) is 32 hours, and the firing temperature in step (5) is 1200° C. for 3 hours.

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Abstract

The invention discloses a light brick and a preparation method thereof. The light brick is mainly prepared from the following raw materials in parts by weight: 10-30 parts of sludge, 20-50 parts of coal gangue, 10-30 parts of kaolin tailing, 1-5 parts of biomass and 1-10 parts of sulfur and nitrogen fixation deodorant, wherein the sulfur and nitrogen fixation deodorant consists of 90-99wt% of calcium oxide and 1-10wt% of potassium carbonate. The preparation method comprises the steps of weighing various raw materials in parts by weight, uniformly mixing, aging, pre-forming and molding, and baking the materials. The light brick is light in weight, good in heat preserving and sound insulating effects, and excellent in sulfur and nitrogen fixation effect, and effectively solves a problem of a conventional high-temperature baking process which ignores Sox and NOx discharge for a long time; and the preparation method is simple and easy in process.

Description

technical field [0001] The invention relates to the field of environmental protection, in particular to a lightweight brick and a preparation method thereof. Background technique [0002] With the continuous improvement of the level of urbanization, a large amount of sludge is produced in the production and living processes of industry and civil use, which not only causes land pollution, but also intensifies the conflict between man and land. Common sludge treatment processes include sanitary landfill, incineration, carbonization, fermented organic fertilizer and other resource utilization methods. [0003] At present, the abundant coal resources have made great contributions to the rapid economic development of our country, but a large amount of "industrial waste" - coal gangue has also been produced in the process of coal production. A large amount of accumulated coal gangue not only occupies land resources, It will also release toxic gas and cause spontaneous combustion, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C04B33/132C04B38/06
CPCY02P40/60
Inventor 殷立宝张成徐齐胜方庆艳陈刚苏杭
Owner ELECTRIC POWER RES INST OF GUANGDONG POWER GRID
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