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Method for separating enriched nickel and cobalt from battery waste leaching solution

A technology for separating, enriching and leaching liquid, applied in the field of non-ferrous hydrometallurgy, can solve the problems of low economic and social benefits, large loss of valuable metals, large consumption of chemical reagents, etc., and achieves low production cost, low operating cost, and equipment. The effect of less investment

Inactive Publication Date: 2012-06-13
河南省冶金研究所有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The above separation and purification methods all have defects such as lengthy process flow, large consumption of chemical reagents, large loss of valuable metals, high recovery cost, low economic and social benefits, etc.

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0019] In this embodiment, the method for separating and enriching nickel and cobalt from battery waste leachate comprises the following steps:

[0020] (1) soak the battery waste with the leach solution of the sulfuric acid system, then carry out solid-liquid separation, collect the liquid phase, and obtain the battery waste leachate, the concentration of Ni in the leachate is 18.6g / L, the concentration of Fe is 9.63g / L, Cu The concentration of Co is 19.06g / L, the concentration of Co is 18.1g / L, and the concentration of Mn is 4.3g / L. Take 30 liters of battery waste leaching solution and put it into a 50 liter reaction vessel. 1.5 times the amount of reduced iron powder with a particle size of 0.074mm was added in batches, reacted at 50°C for 30 minutes, and separated from solid and liquid. The obtained solid was sponge copper with a mass percentage of 99.1%, and the obtained liquid phase was liquid phase A. The copper content in A is 0.746×10 -6 g / L;

[0021] (2) Use sodium...

Embodiment 2

[0026] In this embodiment, the method for separating and enriching nickel and cobalt from battery waste leachate comprises the following steps:

[0027] (1) soak the battery waste with the leach solution of the sulfuric acid system, then carry out solid-liquid separation, collect the liquid phase, and obtain the battery waste leachate, the concentration of Ni in the leachate is 18.6g / L, the concentration of Fe is 9.63g / L, Cu The concentration of Co is 19.06g / L, the concentration of Co is 18.1g / L, and the concentration of Mn is 4.3g / L. Take 30 liters of battery waste leaching solution and put it into a 50 liter reaction vessel. 1.3 times the amount of iron powder with a particle size of 0.075mm was added in batches, reacted at 40°C for 35 minutes, and separated from solid and liquid. The solid obtained was sponge copper with a mass percentage of 99.5%. Medium copper content is 0.175×10 -6 g / L;

[0028] (2) Use sodium carbonate to adjust the pH value of liquid phase A to 4.0, ...

Embodiment 3

[0033] In this embodiment, the method for separating and enriching nickel and cobalt from battery waste leachate comprises the following steps:

[0034] (1) soak the battery waste with the leach solution of the sulfuric acid system, then carry out solid-liquid separation, collect the liquid phase, and obtain the battery waste leachate, the concentration of Ni in the leachate is 18.6g / L, the concentration of Fe is 9.63g / L, Cu The concentration of Co is 19.06g / L, the concentration of Co is 18.1g / L, and the concentration of Mn is 4.3g / L. Take 30 liters of battery waste leaching solution and put it into a 50 liter reaction vessel. 1.5 times the amount of reduced iron powder with a particle size of 0.077mm was added in batches, reacted at 50°C for 25 minutes, and separated from solid and liquid. The obtained solid was sponge copper with a mass percentage of 99.1%. The copper content in A is 0.37×10 -6 g / L;

[0035] (2) Use sodium carbonate to adjust the pH value of liquid phase A...

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Abstract

The invention discloses a method for separating enriched nickel and cobalt from battery waste leaching solution. The method comprises the following steps of: (1) soaking battery waste with acidic leaching solution, adding a reducing agent for treatment, adjusting pH value by using sodium carbonate and then heating and adding hydrogen peroxide or sodium hypochlorite to stir for ruction so as to obtain FeOOH precipitate; then adding a vulcanizing agent for vulcanization treatment; and finally adding water to prepare slurry, adding mixed acid solution for treatment and performing solid-liquid separation to obtain nickel and cobalt-enriched solution. The method for separating the enriched nickel and cobalt from the battery waste leaching solution provided by the invention has the advantages of less investment, simple process, low energy consumption, low production cost, high nickel and cobalt recovery rate and low impurity content in obtained nickel and cobalt-enriched solution.

Description

technical field [0001] The invention belongs to the technical field of nonferrous hydrometallurgy, and in particular relates to a method for separating and enriching nickel and cobalt from battery waste leachate. Background technique [0002] The content of valuable components such as nickel and cobalt in battery waste is relatively high, so it is economically advantageous to extract valuable metals from battery waste. [0003] At present, the conventional treatment method of battery waste is wet leaching, and the leaching solution often contains a large amount of valuable metals such as nickel, cobalt, manganese and copper, etc., and the main impurity metal is iron. The main methods for the separation and purification of valuable metals in the leachate include solvent extraction, ion exchange, and neutralization precipitation. The above separation and purification methods all have defects such as lengthy technological process, large consumption of chemical reagents, large ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B23/00C22B7/00C22B15/00
CPCY02P10/20
Inventor 高岩李金辉李鹏举罗春祥许小菊
Owner 河南省冶金研究所有限责任公司
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