Method for recovering valuable metal from waste and old nickel cobalt lithium manganate ternary battery positive materials

A nickel-cobalt lithium manganese oxide and ternary battery technology, which is applied in the field of recycling valuable metals in the positive electrode materials of waste batteries, can solve the problems of limited practical application, unqualified products, long process flow, etc., and achieve short process and low cost. The effect of low and low dosage

Active Publication Date: 2018-05-04
MEISHAN SHUNYING POWER BATTERY MATERIALS CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1. In the wet leaching process mentioned above, it is often necessary to use strong oxidizing and acidic substances such as hydrogen peroxide and sulfuric acid. High corrosion requirements and high equipment costs
In addition, the consumption of acid or alkali leaching solution is very large, the recovery process is complicated, the waste water and waste residue are large, and the recov

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0036] After disassembling and grinding the anode material of the waste lithium nickel cobalt manganate ternary battery, weigh 100 parts of the processed battery cathode powder, add 8 parts of carbon powder and mix it evenly, then put it in without any substance Put it into the reduction furnace and heat it to 700℃. The waste gas generated during the roasting process is passed into the lime emulsion. After holding for 3.5-4h, the heating is stopped, and the roasting material is taken out after cooling; then the roasting material is poured into the stirring In the reactor, add 200-250 parts of pure water to start stirring, and heat it to 40-50℃ to keep it warm, and then slowly add dilute hydrochloric acid to the stirred reactor to control the dropping rate of the dilute acid to stir the mixture in the kettle. Keep the acidity PH=4.5-5.5, soak and dissolve for 2-3h, filter and wash. Then add sodium hydroxide to the filtrate, adjust the pH of the filtrate to PH=7.0-7.5, let it sta...

Embodiment 2

[0039] After disassembling, grinding, and magnetic separation of the anode material of the waste lithium nickel cobalt manganate ternary battery, weigh 100 parts of the processed battery cathode powder, add 12 parts of carbon powder and mix it evenly and put it into the Put any material in the boat box, then put it in the reduction furnace and heat it to 750°C. The waste gas generated during the roasting process is passed into the lime emulsion. After the temperature is kept for 3-3.5h, the heating is stopped, and the roasting material is taken out after cooling; then roasting Pour the materials into the stirred reaction kettle, add 250-300 parts of pure water, turn on the stirring, and heat up to 50-60 ℃, keep it warm, and then slowly add dilute acetic acid to the stirred reaction kettle to control the acceleration of the dilute acid to make stirring The acidity of the mixed liquid in the kettle is maintained at PH=5.5-6.5, after soaking and dissolving for 2-3h, it is filtered ...

Embodiment 3

[0042] After disassembling, grinding, and magnetic separation of the cathode material of the waste lithium nickel cobalt manganate ternary battery, weigh 100 parts of the processed battery cathode powder, add 15 parts of carbon powder and mix it evenly, and put it into the Put any material in the boat box, then put it in the reduction furnace and heat it to 800°C. The waste gas generated during the roasting process is passed into the lime emulsion. After keeping the temperature for 2-3 hours, stop heating, and take out the roasting material after cooling; then the roasting material Pour into the stirred reactor, add 300-350 parts of pure water, turn on the stirring, and heat it to 60-70℃, keep it warm, then slowly add dilute acetic acid dropwise to the stirred reactor to control the acceleration of the dilute acid to make the stirred tank The acidity of the mixed liquid inside is kept at PH=6-7.5, after dissolving for 2-3h, it is filtered and washed. Then add an appropriate amo...

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PUM

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Abstract

The invention discloses a method for recovering valuable metal from waste and old nickel cobalt lithium manganate ternary battery positive materials. The method comprises the steps that (1) the nickelcobalt lithium manganate ternary battery positive materials subjected to disassembling and grinding are uniformly mixed with carbon powder; then, roasting reduction is performed; the temperature is controlled to be 700 to 950 DEG C, and the time is 1.5 to 4h; (2) roasting materials are put into a stirring device; pure water is added; dilute acid is dropwise added; the PH is regulated to be 4.5 to8; after the soaking, filtering treatment is performed; (3) filtering liquid obtained after filtering is taken; the filtering liquid is regulated by sodium hydroxide until the PH is 7.0 to 10.0; after filtering for impurity removal, soluble carbonate is added; lithium carbonate is precipitated; the lithium carbonate is precipitated, filtered and washed; the recovery of lithium metal elements is realized. An positive powder reduction mode is used; firstly, lithium is converted into dilute acid or water soluble substances; no impurities exist; high-grade lithium is preferably recovered; then, the cobalt, nickel and manganese ternary materials are recovered and utilized in a unified way; the process is simple; the environment is protected; the efficiency is high; wide industrial applicationprospects are realized.

Description

Technical field [0001] The invention relates to the recovery and utilization of valuable metals in the anode materials of waste batteries, in particular to a method for recovering valuable metals from the anode materials of waste nickel cobalt manganese ternary batteries. Background technique [0002] The widespread application of portable electronic products such as mobile phones, notebook computers, digital cameras, and power tools in the market has driven the rapid development of the lithium-ion battery industry. In recent years, the soaring cobalt price has caused battery manufacturers to gradually use mixed oxide systems such as Ni-Co, Co-Mn, Mn-Ni, Mn-Ni-Co to replace lithium cobalt oxide, and their market share is increasing. Nickel cobalt manganese lithium ternary battery cathode material, referred to as nickel cobalt manganese ternary material, is a new type of composite lithium battery containing three transition metal elements of nickel, cobalt and manganese. Its gener...

Claims

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Application Information

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IPC IPC(8): H01M10/54
CPCH01M10/54Y02W30/84
Inventor 赵林龙泽彬赵澎李伟
Owner MEISHAN SHUNYING POWER BATTERY MATERIALS CO LTD
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