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A kind of hydrometallurgical recovery copper and cobalt method of copper cobalt slag

A technology of hydrometallurgy and copper recovery, which is applied in the field of hydrometallurgy recovery of copper and cobalt from copper-cobalt slag, which can solve the problems of large equipment investment and complicated production process, and achieve simple production process, low environmental pollution and low equipment cost Effect

Active Publication Date: 2017-12-22
NORTHWEST RES INST OF MINING & METALLURGY INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although pressure leaching technology and solvent extraction technology have become increasingly mature and widely used in hydrometallurgy, the equipment investment of this process is relatively large and the production process is relatively complicated.

Method used

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  • A kind of hydrometallurgical recovery copper and cobalt method of copper cobalt slag

Examples

Experimental program
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Effect test

Embodiment 1

[0017] A method for recovering copper and cobalt by hydrometallurgy of copper-cobalt slag, carried out according to the following steps:

[0018] (1) An imported copper-cobalt slag contains 13.52% copper and 4.79% cobalt. The copper-cobalt slag was crushed into fine particles below 3 mm, and then 100 g of copper-cobalt slag, 5 g of sodium sulfite and 100 g of water were weighed, and put into a wet ball mill for grinding for 10 minutes to obtain -325 mesh pulp with a fineness of 95%.

[0019] (2) Transfer all the above pulp to a beaker, add water to form a solid-liquid ratio of 1:3, add sulfuric acid with a mass fraction of 98% under stirring to make the initial acidity reach 20g / L, start stirring, and heat to 90°C in a water bath , keep warm for 1 hour, filter and wash while hot to obtain the copper-cobalt leaching solution, and leaching the slag once more before discarding.

[0020] (3) The leaching solution was neutralized with sodium carbonate to a pH value of 4, and 15 g ...

Embodiment 2

[0023] A method for recovering copper and cobalt by hydrometallurgy of copper-cobalt slag, carried out according to the following steps:

[0024] (1) An imported copper-cobalt slag contains 13.52% copper and 4.79% cobalt. The copper-cobalt slag was crushed into fine particles below 3 mm, and then 100 g of copper-cobalt slag, 10 g of sodium metabisulfite and 100 g of water were weighed and put into a wet ball mill for grinding for 10 minutes to obtain -325 mesh pulp with a fineness of 95%.

[0025] (2) Transfer all the above pulp to a beaker, add water to form a solid-liquid ratio of 1:3, add sulfuric acid with a mass fraction of 98% under stirring to make the initial acidity reach 20g / L, start stirring, and heat to 90°C in a water bath , keep warm for 1 hour, filter and wash while hot to obtain the copper-cobalt leaching solution, and leaching the slag once more before discarding.

[0026] (3) The leaching solution was neutralized with sodium carbonate to a pH value of 4, and...

Embodiment 3

[0029] A method for recovering copper and cobalt by hydrometallurgy of copper-cobalt slag, carried out according to the following steps:

[0030] (1) An imported copper-cobalt slag contains 13.52% copper and 4.79% cobalt. Break the copper-cobalt slag into fine particles below 3mm, then weigh 100g of copper-cobalt slag, 15g of sodium bisulfite and 100g of water, put them into a wet ball mill for grinding for 10min, and obtain -325 mesh pulp with a fineness of 95% .

[0031] (2) Transfer all the above pulp to a beaker, add water to form a solid-liquid ratio of 1:3, add sulfuric acid with a mass fraction of 98% under stirring to make the initial acidity reach 20g / L, start stirring, and heat to 90°C in a water bath , keep warm for 1 hour, filter and wash while hot to obtain the copper-cobalt leaching solution, and leaching the slag once more before discarding.

[0032] (3) Neutralize the leaching solution with sodium carbonate to a pH value of 4, add 17g of iron powder under sti...

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Abstract

The invention discloses a hydrometallurgy method for recovering copper and cobalt from copper and cobalt slag. The method comprises the following steps: firstly, reducing ground ores by adopting a reducing agent; secondly, performing acid leaching until leachate containing copper and cobalt is obtained; and thirdly, displacing with iron powder to obtain sponge copper, and precipitating with oxalic acid to obtain cobalt oxalate. According to the method provided by the invention, leaching rates of the copper and the cobalt in the copper and cobalt slag are higher; the copper and the cobalt are better separated from other impurities; the required cost of equipment is low; and the method is small in environmental pollution and simple in process.

Description

technical field [0001] The invention belongs to the technical field of hydrometallurgical engineering, and in particular relates to a method for recovering copper and cobalt by hydrometallurgy of copper-cobalt slag. Background technique [0002] In the metallurgical industry, the separation of copper and cobalt is one of the main problems in the full utilization of cobalt resources. The current cobalt metallurgical process is mainly pressurized oxygen leaching-solvent extraction-insoluble anode electrodeposition. Although pressure leaching technology and solvent extraction technology have become more mature and widely used in hydrometallurgy, the equipment investment of this process is relatively large and the production process is relatively complicated. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a method for recovering copper and cobalt by hydrometallurgy of copper-cobalt slag, which not only can recover ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): C22B7/04C22B15/00C22B23/00
CPCC22B7/007C22B7/04C22B15/0071C22B15/0091C22B23/043C22B23/0461Y02P10/20
Inventor 王永斌王怡霖王军辉黄建芬吴斌周涛吉鸿安栗威
Owner NORTHWEST RES INST OF MINING & METALLURGY INST
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