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Method for preparing cobalt octoate by using LiCoO, anode material of waste lithium battery

A positive electrode lithium cobalt oxide and waste lithium battery technology, which is applied in carboxylate preparation, organic chemistry, etc., can solve the problems of lithium cobalt oxide material discarding, environmental management hidden dangers, etc., and achieve improved extraction rate and production efficiency with low cost , the effect of less investment

Active Publication Date: 2010-01-20
SHENYANG ZHANGMING CHEM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the waste lithium batteries are increasing day by day, and the available lithium cobalt oxide materials are discarded in large quantities, which brings great hidden dangers to environmental governance.

Method used

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  • Method for preparing cobalt octoate by using LiCoO, anode material of waste lithium battery
  • Method for preparing cobalt octoate by using LiCoO, anode material of waste lithium battery
  • Method for preparing cobalt octoate by using LiCoO, anode material of waste lithium battery

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0067] Example 1: First, put the 100-mesh lithium cobaltate powder made from the positive lithium cobaltate of the waste lithium battery into a sulfuric acid acidolysis tank with a concentration of 39% and stir, so that the lithium cobaltate powder exists in the state of a compound in each group After 2 hours, add hydrogen peroxide with a concentration of 29.5%, the amount of which is 1.5 times the weight of lithium cobaltate powder, and control the temperature at 80 ° C. Stop stirring and settling for 1 hour, so that the impurity elements and cobalt 1. The main lithium metal is precipitated in the acidolysis tank, and Fe and Al are removed to below 0.1g / L; then, the metal cation solution from which Fe and Al impurities are removed is introduced into the filter press from the acidolysis tank, and two press filtrations are performed Remove the filter residue, and then import in the static tank; adding concentration in the static tank is 40% lye NaOH to make the pH value reach 9,...

Embodiment 2

[0068]Example 2: First, put the 105-mesh lithium cobaltate powder made from the positive lithium cobaltate of the waste lithium battery into a sulfuric acid acidolysis tank with a concentration of 40% and stir, so that the lithium cobaltate powder exists in the state of a compound in each group After 2.5 hours, add 30% hydrogen peroxide in an amount twice the weight of lithium cobaltate powder, control the temperature at 85°C, stop stirring and settling for 1.5 hours, so that the impurity elements and cobalt 1. The main lithium metal is precipitated in the acidolysis tank, and Fe and Al are removed to below 0.1g / L; then, the metal cation solution from which Fe and Al impurities are removed is introduced into the filter press from the acidolysis tank, and two press filtrations are performed Remove the filter residue, and then import it into the static tank; add the lye NaOH with a concentration of 40% to the static tank to make the pH value reach 9.5, and leave it to stand for 1...

Embodiment 3

[0069] Example 3: First, the 120-mesh lithium cobaltate powder made from the positive lithium cobaltate of the waste lithium battery is put into a sulfuric acid acid hydrolysis tank with a concentration of 41% and stirred, so that the lithium cobaltate powder exists in the state of a compound in each group After 3 hours, add hydrogen peroxide with a concentration of 30.5%, the addition amount is 2.5 times the weight of lithium cobaltate powder, the temperature is controlled at 90 ° C, stop stirring and settling for 3 hours, so that the impurity elements and cobalt 1. The main lithium metal is precipitated in the acidolysis tank, and Fe and Al are removed to below 0.1g / L; then, the metal cation solution from which Fe and Al impurities are removed is introduced into the filter press from the acidolysis tank, and two press filtrations are performed Remove the filter residue, and then import in the static tank; adding concentration to the static tank is 40% lye NaOH to make the pH ...

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Abstract

The invention discloses a method for preparing cobalt octoate by using LiCoO, an anode material of a waste lithium battery, comprising the following steps: carrying out acidolysis on powder of the LiCoO, the anode material of the waste lithium battery by chemical extraction and back extraction, removing Fe and Al by chemical precipitation, filter pressing and deslagging, adding P204 self-made auxiliary extractant to remove impurities and adding P507 self-made auxiliary extractant to extract and separate Co from Li to prepare CoSO4 liquid with content of 75-80%, precipitating raffinate to prepare LiCO3 with primary deposition rate more than 75%, carrying out double decomposition reaction on sodium octoate obtained after saponification reaction between the prepared CoSO4 liquid and octoic acid as well as sodium hydroxide and preparing the product of cobalt octoate liquid through washing, standing to be layered, dehydrating, regulating metal contents and filtering. The rate of recovery of cobalt from the powder of the LiCoO, the anode material of the waste lithium battery is more than 97%.

Description

technical field [0001] The present invention relates to a method for preparing cobalt isooctanoate, more specifically relates to a method for preparing cobalt isooctanoate by using lithium cobaltate at the positive electrode of waste lithium batteries, which is suitable for preparing cobalt isooctanoate by utilizing lithium cobaltate at the positive electrode of waste lithium batteries . Background technique [0002] Cobalt Octoate, English name: Cobalt Octoate, molecular formula: 2(C 8 h 15 o 2 )·CoO chemical structure formula: Red-purple viscous homogeneous liquid. Insoluble in water, slightly soluble in ethanol, soluble in ether. [0003] Cobalt isooctanoate is widely used in coatings, ink driers, unsaturated polyester resin accelerators, crosslinking agents, catalysts, plastic stabilizers and organic synthesis of phenylacetic acid and acetophenone. [0004] At present, the production of cobalt isooctanoate (liquid type) usually has the following three methods. Me...

Claims

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Application Information

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IPC IPC(8): C07C53/128C07C51/41
Inventor 张明
Owner SHENYANG ZHANGMING CHEM
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