Recycling method of cobalt, nickel and manganese in ternary battery positive electrode waste

A ternary battery, cobalt-nickel-manganese technology, applied in the direction of improving process efficiency, etc., can solve problems such as direct utilization, unusable manganese, complex process, etc.

Inactive Publication Date: 2021-05-18
南通北新新能科技股份有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Disadvantages of traditional methods: first, manganese cannot be used or directly used; second, cobalt and nickel are separated,
Third, the production line is long and the process is complicated

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0026]Example 1: Recycling method of cobalt nickeng manganese in a positive electrode waste in a ternary battery, the method comprising the step of: Step 1: Sulfuric acid reduction dissolution, specifically as follows:

[0027]11) In the acid dissolution reaction tank (volume 12m3Add water 6M3After the stirring is turned on, the waste is 1.5 tons.

[0028]12) Current sulfuric acid is slowly added to pH 2.5.

[0029]13) Keep the pH of about 2.5, while steam is warmed and remains around 80 ° C.

[0030]14) Turn in sulfur dioxide, to the oxidative reduction potential at 230mV, access rate 0.2m3 / min.

[0031]15) Solid separation, the filtrate enters the iron aluminum process, the filter residue is washed with water,

[0032]16) Slag washing, washing tank (volume 3m) in the slag3) In the internal input reaction residue, about 1 ton, add water 2M3, Steam is heated to 45 ° C, 2.5 hours of washing time, the secondary countercurrent washing, and the water returns to the dissolution process.

[0033]Step 2: In a...

Embodiment 2

[0054]Example 2: Recycling method of cobalt nickeng manganese in the positive electrode waste of the ternary battery, the method comprising the steps of:

[0055]Step 1: Sulfuric acid reduction is dissolved, as follows:

[0056]11) In the acid dissolution reaction tank (volume 12m3Add water 8M3After the stirring is turned on, it is put into the waste positive and extremes 2 tons;

[0057]12) Current sulfuric acid was slowly added to pH2.0;

[0058]13) Keep the pH is about 2.0, while steam is warmed and remains around 85 ° C;

[0059]14) Top into sulfur dioxide, to the oxidation potential in 200 mV, pass rate 0.2m3 / min;

[0060]15) Solid separation, the filtrate enters the iron aluminum process, the filter residue is washed with water,

[0061]16) Slag washing, washing tank (volume 3m) in the slag3Introduced to reactivate the residue of about 1.5 tons, add water 3.5m3, The steam is heated to 50 ° C, the washing time is 2 hours, the secondary countercurrent washing, the water returning to the dissolution...

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PUM

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Abstract

The invention relates to a method for recycling cobalt, nickel and manganese in a ternary battery positive electrode waste. The method comprises the following steps: 1, reducing and dissolving with sulfuric acid; 2, removing iron and aluminum; 3, removing copper and zinc; 4, removing calcium and magnesium; and 5, removing fluorine. According to the technical scheme, cobalt, nickel and manganese do not need to be separated, any extraction is not needed, and the cobalt, nickel and manganese mixed solution capable of being synthesized by the ternary precursor is directly obtained.

Description

Technical field[0001]The present invention relates to a method, and more particularly to the recovery method of cobalt nickeng manganese in the positive electrode waste of the ternary battery, which belongs to the recycling technology of waste ternary power cells.Background technique[0002]The traditional method is to use acid dissolution using acid dissolution. The first step is to extract iron-free copper-zinc manganese by p204. This step is obtained by a manganese solution containing copper zinc. This manganese solution can only be treated or used as waste liquid. Additional process purification, step 2: Removal of copper-zinc manganese solution to extract cobalt, to obtain a pure cobalt solution, third step: remove the solution after cobalt, then extract, fourth step: remove magnesium solution Extraction of nickel to obtain a nickel solution. Conventional method Disadvantages: First, manganese cannot be utilized or directly utilized; the other is to separate cobalt,. In the proce...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B3/08C22B3/44C22B3/26C22B23/00C22B47/00
CPCC22B7/007C22B3/08C22B3/44C22B23/0407C22B23/0461C22B47/00Y02P10/20
Inventor 郁萍唐明照
Owner 南通北新新能科技股份有限公司
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