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Treatment method of cupriferous sludge

A treatment method and technology for copper metal, applied in the field of treatment of copper-containing metal sludge, can solve the problems of air pollution, high cost, and high energy consumption, and achieve the effect of high recovery efficiency

Inactive Publication Date: 2014-12-03
UNIMICRON TECH CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

However, this method will release exhaust gas during the process and cause air pollution, and this method requires more energy and costs more

Method used

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  • Treatment method of cupriferous sludge
  • Treatment method of cupriferous sludge
  • Treatment method of cupriferous sludge

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Embodiment Construction

[0021] figure 1 It is a flowchart of a method for treating copper-containing metal sludge according to an embodiment of the present invention. Please refer to figure 1 , in one embodiment, the step S10 of acid-dissolving the copper-containing metal sludge is firstly carried out in, for example, an acidification tank. In the acid dissolution step S10 , the copper-containing metal sludge is dissolved in a sulfuric acid solution to form a first mixture including copper-containing acidified sludge. Copper-containing metal sludge is, for example, sludge produced after an industrial manufacturing process, and substances in the copper-containing metal sludge include copper, iron, nickel, aluminum and other metal substances and other impurities. Therefore, copper sulfate compounds, iron sulfate compounds, nickel sulfate compounds, and aluminum sulfate compounds may be formed after the copper-containing metal sludge reacts with sulfate radicals in sulfuric acid solution. The sulfuri...

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Abstract

A treatment method of cupriferous sludge comprises the following steps: acid dissolution: the cupriferous sludge is dissolved in sulfuric acid solution to form a first mixture comprising cupriferous acidified sludge; copper refining: a ferric chloride solution is added into the first mixture to react with the cupriferous acidified sludge in the first mixture to form a second mixture; copper extraction: the second mixture and a resin material are mixed to react to form a third mixture comprising a cupric ion-containing chelate; copper regeneration: a sulfuric acid solution is added into the third mixture so that the copper ion chelate in the third mixture reacts with sulfuric acid to form a cupric sulfate solution; and electrolysis: the cupric sulfate solution is electrolyzed to form a cupriferous material.

Description

technical field [0001] The invention relates to a treatment method of metal sludge, and in particular to a treatment method of copper-containing metal sludge. Background technique [0002] Generally speaking, most of the treatment methods for copper-containing metal sludge use high temperature to oxidize the copper-containing metal sludge, and then export the copper-containing sludge to copper refineries. However, this method will release waste gas during the process to cause air pollution, and this method requires more energy and costs more. Therefore, how to efficiently release copper metal from copper-containing metal sludge in a low-cost and low-air-pollution manner is an important issue at present. Contents of the invention [0003] The invention provides a treatment method for copper-containing metal sludge, which can improve the recovery efficiency of copper metal in copper-containing metal sludge, and can also reduce the volume of harmful sludge, reduce the treatm...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B3/08C22B3/44C22B3/26C25C1/12C22B15/00
CPCY02P10/20
Inventor 廖本卫林鸿钦张樱喻黄贤铭
Owner UNIMICRON TECH CORP
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