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Method for preparing ceramsite filter material by synergistically utilizing solid waste

A ceramsite filter material and filter material technology, applied in separation methods, chemical instruments and methods, applications, etc., can solve the problems of not using high-alumina fly ash, achieve wide application range, large specific surface area, and improve solid waste The effect of resource utilization

Pending Publication Date: 2022-07-15
DATANG TONGZHOU TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0004] The purpose of the present invention is to provide a method for preparing ceramsite filter material by synergistic utilization of solid waste to solve the technical problem of the production method of ceramsite filter material that does not use high-alumina fly ash in the prior art and has better performance

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  • Method for preparing ceramsite filter material by synergistically utilizing solid waste
  • Method for preparing ceramsite filter material by synergistically utilizing solid waste
  • Method for preparing ceramsite filter material by synergistically utilizing solid waste

Examples

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Effect test

Embodiment 1

[0046] 1.1 Preparation method

[0047] The invention provides a method for preparing ceramsite filter material by the synergistic utilization of solid waste, comprising the following processing steps:

[0048] S1 raw material pretreatment, the preparation raw materials of ceramsite filter material are high-alumina fly ash, red mud and sludge, after drying the red mud and sludge, grinding to obtain red mud and sludge powder, high-alumina powder coal The particle size of ash is 45μm sieve balance ≤ 35%, the red mud and sludge raw materials are dried and ground to prepare powder moisture content ≤ 5%, particle size ≤ 100μm;

[0049] S2 is batched according to 70% high-alumina fly ash, 13% red mud and 11% sludge, and the prepared mixture is put into the mixer and stirred evenly;

[0050] S3 transports the evenly stirred material to the disc granulator, and performs water spray granulation to prepare ceramsite filter material raw balls. The liquid used for water spray granulation ...

Embodiment 2

[0058] 2.1 Preparation method

[0059] The invention provides a method for preparing ceramsite filter material by the synergistic utilization of solid waste, comprising the following processing steps:

[0060] S1 raw material pretreatment, the preparation raw materials of ceramsite filter material are high-alumina fly ash, red mud and sludge, after drying the red mud and sludge, grinding to obtain red mud and sludge powder, high-alumina powder coal The particle size of ash is 45μm sieve balance ≤ 35%, the red mud and sludge raw materials are dried and ground to prepare powder moisture content ≤ 5%, particle size ≤ 100μm;

[0061] S2 is batched according to 65% high-alumina fly ash, 15% red mud and 20% sludge, and the prepared mixture is put into the mixer and stirred evenly;

[0062] S3 transports the evenly stirred material to the disc granulator, and performs water spray granulation to prepare ceramsite filter material raw balls. The liquid used for water spray granulation ...

Embodiment 3

[0070] 3.1 Preparation method

[0071] The invention provides a method for preparing ceramsite filter material by the synergistic utilization of solid waste, comprising the following processing steps:

[0072] S1 raw material pretreatment, the preparation raw materials of ceramsite filter material are high-alumina fly ash, red mud and sludge, after drying the red mud and sludge, grinding to obtain red mud and sludge powder, high-alumina powder coal The particle size of ash is 45μm sieve balance ≤ 35%, the red mud and sludge raw materials are dried and ground to prepare powder moisture content ≤ 5%, particle size ≤ 100μm;

[0073] S2 is batched according to 80% high-alumina fly ash, 5% red mud and 15% sludge, and the prepared mixture is put into the mixer and stirred evenly;

[0074] S3 transports the evenly stirred material to the disc granulator, and performs water spray granulation to prepare ceramsite filter material raw balls. The liquid used for water spray granulation i...

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Abstract

The invention discloses a method for preparing a ceramsite filter material by synergistically utilizing solid wastes, and solves the technical problems that in the prior art, the doping amount of the solid wastes is small, and high-alumina fly ash is not adopted for preparing a high-performance ceramsite filter material. The method comprises the following treatment steps: S1, raw material pretreatment: taking high-alumina fly ash, red mud and sludge as raw materials for preparing the ceramsite filter material, airing the red mud and the sludge, and grinding to obtain red mud and sludge powder; s2, proportioning 65%-80% of high-alumina fly ash, 5%-25% of red mud and 5%-20% of sludge, and uniformly stirring the prepared mixture in a mixer; and S3, spraying water and granulating to prepare the ceramsite filter material raw material balls. The prepared filter material is high in strength, high in void ratio, large in specific surface area, high in acid and alkali corrosion resistance, basically insoluble in acid and alkali solutions and reusable, all indexes such as the mud content of the filter material meet the standard requirements of CJ / T299-2008 Artificial Ceramsite Filter Material for Water Treatment, and the filter material is a high-quality filter material product.

Description

technical field [0001] The invention relates to the technical field of recycling and processing of solid waste, in particular to a method for preparing ceramsite filter material by synergistic utilization of solid waste. Background technique [0002] The ceramsite filter material is a spherical artificial filter material. How to use solid waste as much as possible to produce high-quality ceramsite filter media is a hot research topic in recent years. my country's energy consumption is dominated by coal, and a large amount of fly ash is discharged every year. For the northwest region where thermal power generation is the mainstay, the environmental problems caused by fly ash are particularly prominent. In recent years, although there are many studies on the use of fly ash to prepare ceramsite, due to the low plasticity of fly ash, a large amount of binder needs to be added, the cost is high, and the bulk density is relatively large. Red mud is the main solid waste generated...

Claims

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Application Information

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IPC IPC(8): C04B33/132C04B33/135C04B33/24C04B33/13B01D39/06
CPCC04B33/1352C04B33/1322C04B33/1321C04B33/131C04B33/1328C04B33/1305C04B33/24B01D39/06C04B2235/3427C04B2235/3201C04B2235/77C04B2235/96
Inventor 王娜李运改李永超陈杨王沛祎吴悦孙俊民
Owner DATANG TONGZHOU TECH
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