Method for recovering valuable metals in waste nickel-cobalt-manganese lithium ion battery by ion exchange method

An ion exchange method, nickel-cobalt-manganese-lithium technology, applied in the chemical industry, can solve the problems of complex metal separation process, and achieve the effect of short process flow, strong operability, and avoiding the introduction of impurity ions

Inactive Publication Date: 2019-12-03
JINCHUAN GROUP LIMITED +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The wet recovery process separates valuable metals nickel, cobalt, manganese and lithium, and separates them by sulfidation precipitation, oxalic acid and phosphate methods. The process of separating metals is complicated, and the separated metals are entrained with each other.

Method used

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  • Method for recovering valuable metals in waste nickel-cobalt-manganese lithium ion battery by ion exchange method

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] A method for recycling valuable metals in waste nickel-cobalt-manganese lithium-ion batteries by ion exchange, comprising the steps of:

[0029] Step (1). Collect waste nickel-cobalt-manganese lithium-ion batteries, disassemble them manually, discharge them in 5% sodium chloride solution, and crush them mechanically. Weigh 1500g of anhydrous sodium sulfite, dissolve it for later use; add 15L of 1.8M sulfuric acid into the reactor and heat to 50~65°C; weigh 5kg of the crushed waste lithium-ion battery and add it, stir at a low speed, and slowly add sulfuric acid solution to adjust the pH value of the solution 1.0 or so, add sodium sulfite solution dropwise after 10 minutes, react for 30~100 minutes after the dropwise addition, and filter.

[0030] Step (2). Raise the temperature of the leaching solution to 80~90°C, stop heating, add 50g / L lithium hydroxide solution to adjust the pH value of the solution to 2.0, add 10g of nickel powder, react for 15min, add 100mL of 30% ...

Embodiment 2

[0034] A method for recycling valuable metals in waste nickel-cobalt-manganese lithium-ion batteries by ion exchange, comprising the steps of:

[0035] Step (1). Collect waste nickel-cobalt-manganese lithium-ion batteries, manually disassemble them, discharge the batteries in 5% sodium chloride solution, and mechanically crush them. Add 15L of 2M sulfuric acid to the reactor, raise the temperature to 50~65°C, weigh 5kg of the crushed waste lithium-ion battery and add it into it, soak for 10min, stir at a low speed, measure a certain amount of 98% concentrated sulfuric acid, and slowly add it to the reaction vessel. Adjust the pH value of the solution to about 1.0, add 2.5L of 30% hydrogen peroxide, react for 30-100min after the dropwise addition, and filter.

[0036] Step (2). Raise the temperature of the leaching solution to 85°C, add 50g / L nickel hydroxide solution to adjust the pH value of the solution to 1.8, add 12g nickel powder, react for 15 minutes, add 80mL of 30% hyd...

Embodiment 3

[0040] A method for recycling valuable metals in waste nickel-cobalt-manganese lithium-ion batteries by ion exchange, comprising the steps of:

[0041] Step (1). Collect waste nickel-cobalt-manganese lithium-ion batteries, manually disassemble them, discharge the batteries in 5% sodium chloride solution, and mechanically crush them. Add 15L of 2M sulfuric acid to the reactor, raise the temperature to 50~65°C, weigh 5kg of the crushed waste lithium-ion battery and add it into it, soak for 10min, stir at a low speed, measure a certain amount of 98% concentrated sulfuric acid, and slowly add it to the reaction vessel. Adjust the pH value of the solution to about 1.0, add 2.5L of 30% hydrogen peroxide, react for 30-100min after the dropwise addition, and filter.

[0042] Step (2). Raise the temperature of the leaching solution to 85°C, add 50g / L cobalt hydroxide solution to adjust the pH value of the solution to 1.8, add 12g nickel powder, react for 15min, add 30% hydrogen peroxid...

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Abstract

The invention relates to a method for recovering the valuable metals in a waste nickel-cobalt-manganese-lithium ion battery by an ion exchange method, which comprises the following steps of disassembling, discharging and crushing the waste nickel-cobalt-manganese-lithium ion battery, leaching, replacing the leachate with nickel powder or cobalt powder to remove the copper, and hydrolyzing with a valuable metal alkali solution as a neutralizer to remove the iron and aluminum; regenerating the chelating resin with a lithium hydroxide solution, adsorbing the nickel, cobalt and manganese in the impurity-removed solution, and backwashing with sulfuric acid to obtain a nickel-cobalt-manganese mixed solution; and recovering the lithium in the liquid after resin adsorption in the form of lithium hydroxide. According to the method, the stripping and leaching of the waste nickel cobalt lithium manganate ion battery are completed in one step, the impurity elements are not introduced during the leachate impurity removal and valuable metal separation and extraction process, the lithium hydroxide used for ion exchange resin is regenerated via the lithium hydroxide, at the same time, the nickel-cobalt-manganese is absorbed, so that the lithium is prevented from being adsorbed and entering a nickel, cobalt and manganese solution to be lost, and the lithium recovery is prevented from being influenced due to the high sodium ion content in the solution with the sodium hydroxide. According to the present invention, the recovery rate of nickel, cobalt and manganese reaches 98% or above, the recovery rate of lithium reaches 90% or above, the technological process is short, the equipment is few, and the cost is low.

Description

technical field [0001] The invention belongs to the field of chemical industry, and relates to a method for wet recovery and utilization of nickel, cobalt, manganese and lithium valuable metals in waste nickel-cobalt-manganese lithium-ion batteries, in particular to an ion exchange method for recycling waste nickel-cobalt-manganese lithium-ion batteries. valence metal method. Background technique [0002] In recent years, with the sharp increase in the sales of electric vehicles, governments and more and more companies have realized the importance of lithium battery recycling. According to the forecast of the International Energy Agency, by 2030, the global sales of electric vehicles will increase from the current The number of vehicles in China has increased from more than 2 million to 140 million. This means that the recycling of used lithium batteries will become a big global problem. Up to 262,000 tons of car batteries will need to be recycled by 2022. The recycling m...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22B7/00C22B26/12C22B23/00C22B47/00C01D15/02H01M10/54B01D15/08
CPCB01D15/08C01D15/02C22B7/007C22B23/043C22B26/12C22B47/00H01M10/54Y02P10/20Y02W30/84
Inventor 柴艮风曹笃盟张明兰王甲琴李兰兰陈天翼李伟王悦王国超郭培庆
Owner JINCHUAN GROUP LIMITED
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