Municipal sludge and waste fabric mixed resource utilization method

A technology of urban sludge and waste fabrics, which is applied in the direction of improving process efficiency, can solve the problems of difficult and harmless treatment and resource utilization of urban sludge and waste fabrics, and achieve resource utilization, increase porosity, The effect of low raw material requirements

Inactive Publication Date: 2016-12-07
CHONGQING UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0010] The purpose of the present invention is to solve the problems in the prior art that urban sludge and waste fabrics are difficult to be harmlessly treated and utilized as resources.

Method used

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  • Municipal sludge and waste fabric mixed resource utilization method
  • Municipal sludge and waste fabric mixed resource utilization method
  • Municipal sludge and waste fabric mixed resource utilization method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0033] A method for the mixed resource utilization of municipal sludge and waste fabrics, characterized in that it comprises the following raw materials and their mass parts:

[0034]

[0035] The main elements and their mass content percentages in the municipal sludge are: Si 20-30%, Ca 6-10%, Fe 3-6%, Al 6-8%, and the water content is 65%.

[0036] The waste fabric is waste cotton fiber and waste polyester fiber; the waste fabric is treated waste fabric, and the treatment process is to shear and break the waste fabric to a particle size of 0.5-3mm.

[0037] The flux is commercially available limestone or dolomite with a particle size of less than 4mm.

[0038] The fuel is commercially available coke powder, and the particle size of the coke powder is 0.5-4mm.

[0039] Carry out the following steps with the weighed raw materials:

[0040] 1) mixing the raw materials to obtain the mixed raw materials;

[0041] The mixing process uses a mixing truck with a rotating speed ...

Embodiment 2

[0049] A method for the mixed resource utilization of municipal sludge and waste fabrics, characterized in that it comprises the following raw materials and their mass parts:

[0050]

[0051]

[0052] The main elements and their mass content percentages in the municipal sludge are: Si 20-30%, Ca 6-10%, Fe 3-6%, Al 6-8%, and the water content is 65%.

[0053] The waste fabric is waste cotton fiber and waste polyester fiber; the waste fabric is treated waste fabric, and the treatment process is to shear and break the waste fabric to a particle size of 0.5-3mm.

[0054] The flux is commercially available limestone or dolomite with a particle size of less than 4mm.

[0055] The fuel is commercially available coke powder, and the particle size of the coke powder is 0.5-4 mm.

[0056] Carry out the following steps with the weighed raw materials:

[0057] 1) mixing the raw materials to obtain the mixed raw materials;

[0058] The mixing process uses a mixing truck with a rota...

Embodiment 3

[0066] A method for the mixed resource utilization of municipal sludge and waste fabrics, characterized in that it comprises the following raw materials and their mass parts:

[0067]

[0068] The main elements and their mass content percentages in the municipal sludge are: Si 20-30%, Ca 6-10%, Fe 3-6%, Al 6-8%, and the water content is 65%.

[0069] The waste fabric is waste cotton fiber and waste polyester fiber; the waste fabric is treated waste fabric, and the treatment process is to shear and break the waste fabric to a particle size of 0.5-3mm.

[0070] The flux is commercially available limestone or dolomite with a particle size of less than 4mm.

[0071] The fuel is commercially available coke powder, and the particle size of the coke powder is 0.5-4mm.

[0072] Carry out the following steps with the weighed raw materials:

[0073] 1) mixing the raw materials to obtain the mixed raw materials;

[0074] The mixing process uses a mixing truck with a rotating speed ...

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Abstract

The invention discloses a municipal sludge and waste fabric mixed resource utilization method. The municipal sludge and waste fabric mixed resource utilization method is characterized in that the following raw materials are used in the method in parts by mass: 69-86 parts of iron ore powder, 3-9 parts of municipal sludge, 2-5 parts of waste fabrics, 6-12 parts of a fusing agent, and 3-5 parts of fuels. The method comprises the following steps: (1) evenly mixing the weighed raw materials to obtain a mixed raw material; (2) after adding water in the mixed raw material obtained in the step (1), granulating, wherein the content by weight of the water is controlled to be 7.5-8% in the mixed raw material after the mixed raw material is added with the water, and the diameter of a granular mixed material obtained after granulating is 3-8 mm; and (3) successively distributing and igniting to sinter the granular mixed material obtained in the step (2), and preparing to obtain sintered ores.

Description

technical field [0001] The invention relates to the technical field of iron-making raw material preparation, in particular to a resource utilization method for mixing urban sludge and waste fabrics. Background technique [0002] With the improvement of the efficiency of urban sewage treatment in my country, the generation of urban sludge has increased rapidly. It is estimated that by 2020, the annual output of sludge in my country will exceed 60 million tons. The composition of urban sludge is relatively complex, rich in a large amount of toxic and harmful substances such as organic matter, pathogenic microorganisms, heavy metals and parasites, and accompanied by stench, which seriously threatens people's health and living environment. Therefore, proper treatment of municipal sludge is required. [0003] However, traditional municipal sludge treatment methods mainly include landfill, incineration, and composting. The landfill method needs to occupy a large amount of land, ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B1/16C22B1/24
CPCC22B1/16C22B1/24Y02P10/20
Inventor 刘清才蒋历俊胡广李琳郭富强王小青赵齐姚璐孔明孟飞陈奎
Owner CHONGQING UNIV
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