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Treatment method for electrolytic copper waste liquid

A treatment method, electrolytic copper technology, applied in the field of chemical metallurgy, can solve the problems of consumption of neutralizing agent, difficulty in realizing profits, unfavorable mass production, etc.

Inactive Publication Date: 2017-12-22
GUANGDONG JIANA ENERGY TECH CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The concentration of sulfuric acid in electrolytic copper waste liquid is as high as 170-280g / L, containing 40-60g / L nickel, 5-10g / L copper, 3-8g / L iron, and trace amounts of cobalt, calcium, zinc, manganese, etc. Comprehensive recycling poses difficulties
[0003] At present, some enterprises decopper the electrolytic copper waste liquid first, then evaporate from the decopper liquid, cool and crystallize to collect the crude nickel sulfate product. High disadvantages, difficult to achieve profits
[0004] "Journal of Hubei Institute of Technology" No. 6, 2003, entitled "Research on the Use of Electrolytic Copper Waste Liquid to Remove Impurities and Prepare Copper Sulfate", reported that the electrolytic copper waste liquid was neutralized to the pH range by adding alkaline substances. After removing iron, copper and nickel are precipitated in sequence, and finally crude copper hydroxide and nickel hydroxide products are obtained. This method not only consumes a large amount of neutralizing agent, but also has high impurity content and low added value, and the cobalt resources in it are not obtained. Reasonable use
[0005] Chinese invention patent CN1472365 "Treatment Process of Electrolytic Copper Waste Liquid" discloses a process for the treatment of electrolytic copper waste liquid. By adding industrial sulfuric acid once or in batches, acid analysis is carried out to separate sulfuric acid mother liquor, copper sulfate, and nickel sulfate in sequence. The process has high requirements on equipment, and increases the risk of operators in the production process, and the lack of impurity removal process makes the obtained product have high impurity content, which is not conducive to large-scale production

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Embodiment 1

[0025] The invention discloses a treatment method for electrolytic copper waste liquid, such as figure 1 Include the following steps:

[0026] (1) Leaching: Put the finely ground copper oxide ore into the reaction tank, add water to adjust the slurry, and add electrolytic copper waste liquid to carry out heating and stirring leaching under normal pressure. The temperature is controlled at 80°C, the stirring speed is 500r / min, and the final pH is controlled at 2. .0 , the reaction time is 2h, after the reaction is completed, filter to obtain the leaching solution and leaching residue;

[0027] (2) Copper recovery: use the copper extractant to extract the copper in the leachate obtained in step (1) into the organic phase, and obtain the loaded copper organic phase and the first raffinate after phase separation; After extraction, pure copper sulfate solution can be obtained;

[0028] (3) Iron removal and aluminum removal: first by adding an oxidizing agent, ferrous iron in the...

Embodiment 2

[0031] The invention discloses a treatment method for electrolytic copper waste liquid, comprising the following steps:

[0032] (1) Leaching: Put the finely ground copper oxide ore into the reaction tank, add water to adjust the slurry, and add electrolytic copper waste liquid to carry out heating and stirring leaching under normal pressure. The temperature is controlled at 60°C, the stirring speed is 350r / min, and the final pH is controlled at 1.0 , the reaction time is 4h, after the reaction is completed, filter to obtain the leachate and leach residue;

[0033] (2) Copper recovery: use the copper extractant to extract the copper in the leachate obtained in step (1) into the organic phase, and obtain the loaded copper organic phase and the first raffinate after phase separation; After extraction, pure copper sulfate solution can be obtained;

[0034] (3) Iron removal and aluminum removal: first by adding an oxidizing agent, ferrous iron in the raffinate obtained in step (2...

Embodiment 3

[0037] The invention discloses a treatment method for electrolytic copper waste liquid, comprising the following steps:

[0038] (1) Leaching: Put the finely ground copper oxide ore into the reaction tank, add water to adjust the slurry, and add electrolytic copper waste liquid to carry out heating and stirring leaching under normal pressure. The temperature is controlled at 40°C, the stirring speed is 200r / min, and the final pH is controlled at 3.0 , the reaction time is 3h, after the reaction is completed, filter to obtain the leaching solution and leaching residue;

[0039] (2) Copper recovery: use the copper extractant to extract the copper in the leachate obtained in step (1) into the organic phase, and obtain the loaded copper organic phase and the first raffinate after phase separation; After extraction, pure copper sulfate solution can be obtained;

[0040] (3) Iron removal and aluminum removal: first by adding an oxidizing agent, ferrous iron in the raffinate obtaine...

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Abstract

The invention discloses a treatment method for electrolytic copper waste liquid. The treatment method comprises the following steps of leaching, copper recycling, iron and aluminum removing and nickel recycling. According to the treatment method for electrolytic copper waste liquid, after copper is extracted and separated, chemical impurity removal and extraction impurity removal are combined, a high-purity nickel product is obtained, meanwhile, copper oxide ore and cobalt, zinc, manganese and other valuable metals in electrolytic copper waste liquid can be enriched to serve as by-products.

Description

technical field [0001] The invention relates to the technical field of chemical industry and metallurgy, in particular to a treatment method for electrolytic copper waste liquid. Background technique [0002] Existing domestic copper smelting enterprises usually use electrolysis to refine pure copper. During the process of electrolytic copper, impurities such as nickel, cobalt, and iron in the electrolyte will be gradually enriched. When the impurity ions are enriched to a certain extent, the quality of cathode copper will be reduced. , so it is necessary to discharge electrolytic copper waste liquid regularly. The concentration of sulfuric acid in electrolytic copper waste liquid is as high as 170-280g / L, containing 40-60g / L nickel, 5-10g / L copper, 3-8g / L iron, and trace amounts of cobalt, calcium, zinc, manganese, etc. Comprehensive recycling poses difficulties. [0003] At present, some enterprises decopper the electrolytic copper waste liquid first, then evaporate from...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B23/00
CPCC22B7/007C22B23/043Y02P10/20
Inventor 黄亚祥彭灿黄铁熙张颖徐定源
Owner GUANGDONG JIANA ENERGY TECH CO LTD