Manganese-lithium separating method used in ternary battery waste comprehensive recycling

A ternary battery and separation method technology, which is applied in the direction of battery recycling, waste collector recycling, recycling technology, etc., can solve the problems of complex process, high production cost, long preparation process, etc., to simplify the preparation process and reduce energy consumption of materials The effect of reducing consumption and shortening the process flow

Active Publication Date: 2020-05-08
HUNAN JINYUAN NEW MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The disadvantage is that manganese and lithium ions need to be extracted to separate and rec...

Method used

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  • Manganese-lithium separating method used in ternary battery waste comprehensive recycling
  • Manganese-lithium separating method used in ternary battery waste comprehensive recycling
  • Manganese-lithium separating method used in ternary battery waste comprehensive recycling

Examples

Experimental program
Comparison scheme
Effect test

Embodiment approach

[0018] Implementation method: The manganese and lithium separation method in the comprehensive recovery of ternary battery waste is carried out as follows:

[0019] a. Waste ternary battery material powder obtained by dismantling waste ternary batteries, after acid leaching, copper removal, iron and aluminum removal, to obtain impurity removal solution, its special features are:

[0020] b. Use sodium hydroxide to adjust the pH value of the impurity removal solution to 5.5-6.5, preferably 6. Precipitate the mixture of cobalt hydroxide and nickel hydroxide, filter and wash, and the filtrate and washing liquid enter the manganese-lithium separation operation process.

[0021] c, washing liquid and filtrate adjust pH to 4.5-5.0 with dilute sulfuric acid, by 2.0-4.0 times of cobalt and nickel total amount, preferably 2.5-3.5 times, 3 times, add solid sodium sulfide, reaction time 30-65 minutes, preferably 35-60 minutes, 40-55 minutes, 45-50 minutes, make the remaining cobalt and n...

Embodiment 1

[0029] Embodiment 1: the method for separating manganese and lithium in the comprehensive recovery of ternary battery waste, take the following steps:

[0030] a. The waste ternary battery material powder obtained by dismantling the waste ternary battery is subjected to acid leaching to remove copper, iron and aluminum to obtain a liquid for removing impurities.

[0031] b. Use 1% sodium hydroxide to adjust the pH value of the impurity removal solution to 5.5, precipitate a mixture of cobalt hydroxide and nickel hydroxide, filter and wash, and the filtrate and washing liquid enter the manganese-lithium separation operation process.

[0032] c. At 20m 3 Pump 15m into the reactor 3 Wash liquid and filtrate, adjust pH to 4.5 with 4N sulfuric acid solution, add solid sodium sulfide by 2.0 times of the total amount of cobalt and nickel, react for 30 minutes, make cobalt and nickel ions remaining in the solution form cobalt sulfide and nickel sulfide precipitation, use 60m 2 The p...

Embodiment 2

[0037] Embodiment 2: the separation of manganese and lithium in the comprehensive recovery of ternary battery waste, the following steps are taken:

[0038] a. The waste ternary battery material powder obtained by dismantling the waste ternary battery is subjected to acid leaching to remove copper, iron and aluminum to obtain a liquid for removing impurities.

[0039] b. Use 32% sodium hydroxide to adjust the pH value of the impurity removal solution to 6.5, precipitate a mixture of cobalt hydroxide and nickel hydroxide, filter and wash, and the filtrate and washing liquid enter the manganese-lithium separation operation process.

[0040] c. At 20m 3 Pump 15m into the reactor 3 Wash liquid and filtrate, use 1N sulfuric acid solution to adjust pH to 4.7, add 3.0 times solid sodium sulfide of cobalt and nickel total amount, react for 40 minutes, make cobalt nickel ion remaining in the solution form cobalt sulfide and nickel sulfide precipitation, use 60m 2 The plate and frame ...

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Abstract

The invention discloses a manganese-lithium separating method used in ternary battery waste comprehensive recycling, and relates to a battery waste recycling method. The manganese-lithium separating method comprises the steps that a, waste ternary battery material powder is subjected to acid leaching, and impurity removal liquid is obtained; b, a cobaltous hydroxide and nickelous hydroxide mixtureis deposited through sodium hydroxide; c, the PH of washing liquid and filter liquid is adjusted through dilute sulphuric acid, and cobaltous sulfide and nickel sulfide are deposited; d, the PH of the filter liquid and the washing liquid is adjusted through sodium hydroxide, manganese ions are deposited, manganese hydroxide filter cakes, lithium containing filter liquid and washing liquid are obtained; e, after the lithium containing filter liquid and the washing liquid are subjected to sodium sulfate removal through evaporative crystallization, concentrated lithium liquid is obtained; and f,a saturated sodium carbonate solution is used for depositing lithium carbonate, and lithium carbonate filter cakes and lithium depositing mother liquid are obtained. The manganese-lithium separatingmethod solves the problems that in the prior art, manganese ions and lithium ions can be separated through extraction, the manganese ions are removed through a hydrolysis method, accordingly, the purposes of manganese-lithium separating and respective manganese and lithium ion recycling are achieved without extraction operation, the preparing technology is simplified, the technology process is shortened, material consumption and energy consumption are reduced, and the production cost is saved by 20% or above.

Description

technical field [0001] The invention relates to a method for recycling waste battery materials. Background technique [0002] In the process of dismantling and recycling waste ternary battery materials, the method adopted in the prior art is: the waste ternary battery is disassembled to obtain waste positive electrode material powder, and then acid leached to remove copper, iron, aluminum, Calcium and magnesium are removed to obtain the pre-extraction solution, which is then extracted and separated to form manganese sulfate, nickel sulfate, and cobalt sulfate solutions, or cobalt, nickel, and manganese ions are fully extracted and fully reversed to obtain a sulfuric acid mixed salt solution of cobalt, nickel, and manganese. All cobalt , nickel, manganese, and lithium elements must go through the process route of extraction and stripping, and the production cost is determined by the total number of moles of metal ions to be extracted, which leads to high manufacturing costs. ...

Claims

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Application Information

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IPC IPC(8): C22B47/00C22B26/12C22B7/00C22B23/00H01M10/54
CPCC22B7/007C22B23/0461C22B26/12C22B47/00H01M10/54Y02W30/84Y02P10/20
Inventor 刘训兵欧阳剑君刘席卷吴三木赵湘平董雄武张超文周群成罗春谌三线
Owner HUNAN JINYUAN NEW MATERIALS CO LTD
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