Method for extracting nickel and cobalt from high-nickel battery waste

A battery, high-nickel technology, applied in the field of nickel-cobalt extraction from high-nickel battery waste, can solve the problems of difficulty in industrial production, high use cost, high price, etc., to ensure the separation efficiency of nickel and cobalt, improve production costs, reduce The effect of inventory

Inactive Publication Date: 2020-11-27
JIESHOU HUAYU POWER SUPPLY +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

C272 also has a good effect on the extraction and separation of high-nickel and low-cobalt solutions, but C272 is expensive and the cost of use is too high, so it is difficult to apply in industrial production

Method used

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  • Method for extracting nickel and cobalt from high-nickel battery waste

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Experimental program
Comparison scheme
Effect test

Embodiment 1

[0025] A method for extracting nickel and cobalt from waste materials of high-nickel batteries, specifically comprising the steps of:

[0026] Step S1: After crushing and sorting the waste high-nickel batteries, add sulfuric acid solution and hydrogen peroxide to the sorted waste high-nickel batteries, and soak them for 20 minutes at a temperature of 90°C to obtain a leaching solution;

[0027] Step S2: extracting the leach solution prepared in step S1 with extractant 1 at a volume ratio of 1:1 to obtain pure nickel raffinate and cobalt-magnesium-nickel solution;

[0028] Step S3: extracting the pure nickel raffinate prepared in step S2 with extractant 1 at a volume ratio of 1:1 to enrich nickel to obtain a nickel salt;

[0029] Step S4: Extract the cobalt-magnesium-nickel solution prepared in step S2 with an extractant 2 at a volume ratio of 1:1, and back-extract with a sulfuric acid solution with a concentration of 3mol / L to obtain a cobalt salt and a raffinate;

[0030] St...

Embodiment 2

[0032] A method for extracting nickel and cobalt from waste materials of high-nickel batteries, specifically comprising the steps of:

[0033] Step S1: After crushing and sorting the waste high-nickel batteries, add sulfuric acid solution and hydrogen peroxide to the sorted waste high-nickel batteries, and soak them for 20 minutes at a temperature of 90°C to obtain a leaching solution;

[0034] Step S2: extracting the leach solution prepared in step S1 with extractant 1 at a volume ratio of 1:2 to obtain pure nickel raffinate and cobalt-magnesium-nickel solution;

[0035] Step S3: Extract the pure nickel raffinate prepared in step S2 with extractant 1 to enrich nickel at a volume ratio of 1:2 to obtain nickel salt;

[0036] Step S4: Extract the cobalt-magnesium-nickel solution prepared in step S2 with an extractant 2 at a volume ratio of 1:2, and back-extract with a sulfuric acid solution with a concentration of 3.1mol / L to obtain a cobalt salt and a raffinate;

[0037] Step ...

Embodiment 3

[0039] A method for extracting nickel and cobalt from waste materials of high-nickel batteries, specifically comprising the steps of:

[0040] Step S1: After crushing and sorting the waste high-nickel batteries, add sulfuric acid solution and hydrogen peroxide to the sorted waste high-nickel batteries, and soak for 30 minutes at a temperature of 95°C to obtain a leaching solution;

[0041] Step S2: extracting the leach solution prepared in step S1 with extractant 1 at a volume ratio of 1:3 to obtain pure nickel raffinate and cobalt-magnesium-nickel solution;

[0042] Step S3: Extract the pure nickel raffinate prepared in step S2 with extractant 1 to enrich nickel at a volume ratio of 1:3 to obtain nickel salt;

[0043] Step S4: Extract the cobalt-magnesium-nickel solution prepared in step S2 with an extractant 2 at a volume ratio of 1:3, and back-extract with a sulfuric acid solution with a concentration of 3.2mol / L to obtain a cobalt salt and a raffinate;

[0044] Step S5: E...

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Abstract

The invention discloses a method for extracting nickel and cobalt from high-nickel battery waste. The method comprises the steps of first leaching the high-nickel battery waste with acid, extracting aleachate with P204, directly carrying out nickel-magnesium separation, and enriching an obtained pure nickel raffinate with the P204 to obtain a corresponding nickel product; and extracting and separating a cobalt-nickel-magnesium solution carrying a small amount of nickel with P507 to obtain a corresponding cobalt product, extracting the raffinate again, and completely extracting the residual cobalt. In step S2, the magnesium element in the high-nickel battery waste is extracted into an organic phase along with cobalt, copper and other elements, so that nickel liquid achieves the purity of electronic grade products. Compared with the prior art, the method for extracting nickel and cobalt from the high-nickel battery waste has the advantages that the production line is reduced, the storage amount of the product cobalt and the product nickel is reduced, a valuable C272 extracting agent is not used, and the production cost is not raised while the separation efficiency of nickel and cobalt is guaranteed.

Description

technical field [0001] The invention belongs to the technical field of battery treatment, and in particular relates to a method for extracting nickel and cobalt from high-nickel battery waste. Background technique [0002] In recent years, high-nickel ternary materials have become the focus of attention due to their low cost and high capacity. They are more and more widely used in the field of power batteries, and a large number of waste high-nickel lithium-ion batteries are produced. In order to avoid resources Waste and pollution to the environment require recycling of waste lithium-ion battery materials. Nickel and cobalt are two important constituent metals in lithium battery materials. Due to their high value, they will be extracted and recycled. The lithium battery material industry has relatively high requirements for the purity of nickel-cobalt compounds, so the separation of nickel and cobalt becomes very important. [0003] The separation of nickel and cobalt mai...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B3/38C22B3/40C22B23/00H01M10/54
CPCC22B7/007C22B23/00C22B3/3844C22B3/3846C22B3/409H01M10/54Y02W30/84Y02P10/20
Inventor 王浩陈华勇姚送送叶明刚孙朝军
Owner JIESHOU HUAYU POWER SUPPLY
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