Solidified body of cadmium-containing waste residue and preparation method thereof

A technology of solidified body and waste residue, which is applied in the field of cadmium-containing waste solidified body and its preparation, can solve the problem of high cost, achieve the effects of increasing solidification capacity, reducing cost, and reducing leaching concentration

Active Publication Date: 2018-04-06
AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Cement solidification method is a relatively mature method of hazardous waste treatment, but if pure cement or high proportion cement solidification scheme is used, the cost is high

Method used

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  • Solidified body of cadmium-containing waste residue and preparation method thereof

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Embodiment 1: The cadmium-containing waste residue solidified body is composed of cadmium-containing waste residue, curing agent, cadmium residue treatment agent, stabilizer, aggregate and water, and each component is measured according to weight percentage: 100 parts of cadmium-containing waste residue, 50 parts of curing agent 20 parts, 20 parts of cadmium slag treatment agent, 200 parts of aggregate, 4 parts of stabilizer, 300 parts of water, wherein, the curing agent is a mixture of cement and loess, and the cadmium slag treatment agent is fly ash, limestone, kiln A mixture of ash and carbide slag, the aggregate is a mixture of quartz sand and metallurgical slag, and the stabilizer is a mixture of sodium humate, lignocellulose, mineral cellulose and synthetic cellulose.

[0029] see figure 1 , is the process flow chart of the preparation method of the cadmium-containing waste residue solidified body provided by the present invention.

[0030] The preparation method...

Embodiment 2

[0047] Embodiment 2: The cadmium-containing waste residue solidified body is composed of cadmium-containing waste residue, curing agent, cadmium residue treatment agent, stabilizer, aggregate and water, and each component is measured according to weight percentage: 100 parts of cadmium-containing waste residue, 60 parts of curing agent parts, 10 parts of cadmium slag treatment agent, 300 parts of aggregate, 1.2 parts of stabilizer, 400 parts of water, wherein, the curing agent is a mixture of cement and loess, and the cadmium slag treatment agent is a mixture of fly ash and limestone , the aggregate is a mixture of quartz sand and metallurgical slag, and the stabilizer is a mixture of sodium humate, lignocellulose, mineral cellulose and synthetic cellulose.

[0048] see again figure 1 , is the process flow chart of the preparation method of the cadmium-containing waste residue solidified body provided by the present invention.

[0049] The preparation method of this cadmium-c...

Embodiment 3

[0066] Embodiment 3: The cadmium-containing waste residue solidified body is composed of cadmium-containing waste residue, curing agent, cadmium residue treatment agent, stabilizer, aggregate and water, and each component is measured according to weight percentage: 100 parts of cadmium-containing waste residue, 70 parts of curing agent parts, 15 parts of cadmium slag treatment agent, 500 parts of aggregate, 2.5 parts of stabilizer, 700 parts of water, wherein, the curing agent is a mixture of cement and loess, and the cadmium slag treatment agent is fly ash, limestone, kiln A mixture of ash and carbide slag, the aggregate is a mixture of quartz sand and metallurgical slag, and the stabilizer is a mixture of sodium humate, lignocellulose, mineral cellulose and synthetic cellulose.

[0067] see again figure 1 , is the process flow chart of the preparation method of the cadmium-containing waste residue solidified body provided by the present invention.

[0068] The preparation m...

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Abstract

The invention provides a cadmium-containing waste residue solidified body and a preparation method thereof. The cadmium-containing waste residue solidified body comprises 100 parts of cadmium-containing waste residue, 50 to 80 parts of a curing agent, 10 to 20 parts of a cadmium residue treating agent, 50 to 500 parts of aggregate, 0.8 to 4 parts of a stabilizing agent and 200 to 700 parts of water, wherein the curing agent is a mixture of cement and loess, the cadmium residue treating agent is one or a mixture of two or more selected from the group consisting of fly ash, kiln ash, carbide slag and limestone, the aggregate is one selected from or a mixture of quartz sand and metallurgical slag, and the stabilizing agent is one or a mixture of two or more selected from the group consisting of sodium humate, lignocellulose, mineral cellulose and synthetic cellulose. According to the invention, through addition of a proper amount of loess, fly ash, kiln ash, carbide slag, limestone and the like, the usage amount of cement can be reduced, so cost for solidification treatment is reduced; and a certain amount of limestone is added, so the leaching concentration of cadmium ions of a solidified block is effectively decreased, and solidification capability is improved.

Description

【Technical field】 [0001] The invention relates to the technical field of harmless treatment and resource utilization of industrial solid waste, in particular to a cadmium-containing solidified waste residue and a preparation method thereof. 【Background technique】 [0002] Since the 1980s, my country's economy has entered a period of rapid growth, and the amount of industrial solid waste generated and accumulated has been increasing year by year. In 1992, the annual output of industrial solid waste was more than 600 million tons. After 2000, the annual output has exceeded 1 billion tons. Reaching 2.31 billion tons and 57 million tons, the industrial waste accumulated in my country over the years has reached more than 7 billion tons, occupying more than 1 million mu of land. Solid waste is one of the main pollution sources of the environment due to its various types, complex composition and huge quantity, and its degree of harm is no less than that of water pollution and air p...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C04B28/00C04B18/14C04B18/08C04B22/10
CPCY02W30/91
Inventor 周益辉
Owner AEROSPACE KAITIAN ENVIRONMENTAL TECH CO LTD
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