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Steel slag powder produced from industrial waste sludge and its treatment method

A treatment method and technology of industrial waste slag, which is applied in the field of environmental protection of building materials, can solve the problems of difficult grinding of steel slag powder and increased power consumption, and achieve the effects of high fluidity, low power consumption and high compatibility

Active Publication Date: 2022-04-29
盱眙狼山水泥有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The purpose of the present invention is to solve the problem of how to use a large amount of sludge, solve the technical problems of difficult grinding of steel slag powder and increase power consumption, protect the environment from pollution, and provide a kind of steel slag powder produced by industrial waste sludge and its treatment method

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  • Steel slag powder produced from industrial waste sludge and its treatment method
  • Steel slag powder produced from industrial waste sludge and its treatment method
  • Steel slag powder produced from industrial waste sludge and its treatment method

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Embodiment 1

[0022] The processing method of the steel slag powder that utilizes industrial waste sludge to produce comprises the steps:

[0023] 1) Raw material selection and proportioning: the sludge is 80% by mass percentage, and the steel slag is 20% by mass percentage; the sludge is domestic sludge, printing and dyeing sludge, and papermaking sewage discharged from sewage treatment plants. One or more of sludge, pharmaceutical sludge, and chemical sludge, the steel slag is the waste slag and steel slag discharged from the process of steelmaking materials above 1500 degrees in the steel factory;

[0024] 2) Dehydration and drying: the sludge is directly sent to the drying kiln for drying, and the drying temperature is 300 degrees;

[0025] 3) Grinding into fine powder: the dried sludge and steel slag are mixed and ground into fine powder, the specific surface area of ​​the fine powder is 450-550m 2 / kg to get steel slag powder.

[0026] The prepared steel slag powder meets the follow...

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Abstract

The invention relates to a novel steel slag powder produced by using industrial waste sludge, which consists of the following materials in terms of mass percentage: 80% of sludge and 20% of steel slag. The invention also relates to a treatment method for the novel steel slag powder produced from industrial waste sludge. The invention mixes and grinds the dried sludge and steel slag together into fine powder, increases the output per hour by 70%, saves electricity by 60%, can use a large amount of sludge, saves land resources, solves the problem of environmental pollution, and saves costs , Improve the application quality of steel slag powder in cement products and concrete. When the product of the invention is used instead of part of cement, it has the characteristics of small water demand, high fluidity, high compatibility, good wear resistance and high strength. The new steel slag powder prepared by the invention is used in concrete, which has the advantages of less water consumption, less slump loss, less water reducer consumption, good frost resistance, strong carbonation resistance, strong chloride ion permeability resistance, and high strength. , Low cost and other characteristics.

Description

technical field [0001] The invention belongs to the field of environmental protection of building materials, and in particular relates to a steel slag powder produced by using industrial waste sludge and a processing method thereof. Background technique [0002] Sludge treatment is one of the research topics in the world today. Sludge contains a large amount of organic matter, various trace elements, 60% water, a small amount of heavy metals, and microbial pathogens and parasites. At present, there are 260 million tons of sludge discharge in my country every year, and the utilization rate is less than 10%. 90% of the sludge is stacked and buried in a large amount of land, causing serious secondary pollution to the environment. Therefore, it is imminent to study how to detoxify and reduce the amount of sludge. At present, the formation of steel slag is the waste slag discharged from the production of steel materials at a temperature above 1500 degrees, called steel slag. St...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B5/06
CPCC04B5/06
Inventor 谭纪林华建军华玉海曹敏谭伟牛成张会明陈阳徐学成
Owner 盱眙狼山水泥有限公司
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