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High-purity polymetallic-element solid mixed salt and preparation method and application thereof

A technology of solid mixing and metal elements, applied in the direction of sulfite preparation, chloride preparation, electrical components, etc., can solve the problems of high cost, large space demand, low efficiency, etc., achieve good economic and social benefits, and high production efficiency , highly operable effect

Inactive Publication Date: 2011-06-08
GUANGDONG BRUNP RECYCLING TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the process of recycling nickel, cobalt, and manganese in waste lithium-ion batteries has the characteristics of large space requirements and high energy consumption, resulting in low efficiency and high cost of the entire process plan, with insignificant economic benefits and little industrial value.

Method used

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  • High-purity polymetallic-element solid mixed salt and preparation method and application thereof

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0028] Take the lithium-ion batteries used in mobile phones or notebook computers whose positive electrode materials contain nickel, cobalt and manganese, disassemble them with tools, select 500 grams of positive electrode pieces, and crush them with a high-speed rotary grinder for 10 minutes. The materials can all pass 100 mesh , then put the material into a muffle furnace at 550°C for calcination for 4 hours, put the fired powder into a 1000 ml beaker containing 2 moles of sodium hydroxide one by one, put the beaker in a water bath in advance, and control the inside of the beaker The temperature of the solution is 50°C. After the powder is fed, the reaction is continued for 1.5 hours, filtered, washed 2-3 times with hot water, the aluminum content is 0.008% from the filter cake, and the sodium hydroxide concentration of the filtrate is 0.23 mol / liter. Put the filter cake into a beaker containing 390 ml of sulfuric acid with a concentration of 2.3 mol / L one by one. Put the bea...

Embodiment 2

[0032] Take the lithium-ion batteries used in mobile phones or notebook computers whose positive electrode materials contain nickel, cobalt and manganese, disassemble them with tools, select 500 grams of positive electrode pieces, and crush them with a high-speed rotary grinder for 10 minutes. The materials can all pass 100 mesh , then put the material into a muffle furnace at 550°C for calcination for 4 hours, put the burned powder into a 1000 ml beaker with 2 moles of sodium hydroxide one by one, put the beaker in a water bath in advance, and control the inner solution of the beaker The temperature is 50°C. After the powder is fed, continue to react for 1.5 hours, filter, wash with hot water 2-3 times, take a sample from the filter cake and analyze the aluminum content. The concentration of sodium hydroxide in the filtrate is 0.23 mol / liter. Put the filter cake into a beaker containing 390 ml of sulfuric acid with a content of 2.3 mol / L one by one. Put the beaker in a water b...

Embodiment 3

[0037] Get the lithium-ion battery used for waste mobile phones or notebook computers whose positive electrode material contains cobalt and manganese, and the pulverization step is the same as that of Example 1. The powder that has been burned is dropped into a 1000 ml beaker containing 2 moles of sodium hydroxide successively, and the beaker is placed in advance. In the water bath, control the temperature of the solution in the beaker to 50°C. After the powder is poured, continue to react for 1.5 hours, filter, wash with hot water 2-3 times, and analyze the aluminum content from the filter cake. The concentration of sodium hydroxide in the filtrate is is 0.28 mol / L. Put the filter cake into a beaker containing 400 ml of hydrochloric acid with a content of 4 mol / L one by one. Put the beaker in a water bath in advance, keep the temperature at 90°C, and add sodium sulfite to the beaker one by one. After the addition of sodium sulfite, the reaction is not obvious. , stop adding, ...

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Abstract

The invention discloses a high-purity polymetallic-element solid mixed salt. The solid mixed salt is prepared from raw materials of waste secondary lithium batteries, the content of impurities such as calcium, magnesium, copper, zinc, ferrum, aluminum, lead, cadmium and chromium in the solid mixed salt is lower than 10 ppm respectively. The invention also discloses a preparation method and application of the high-purity polymetallic-element solid mixed salt. The nickel, cobalt and manganese in waste batteries are treated and prepared into high-purity polymetallic solid mixed salt which is then used for preparing the anode material and the front-body material of batteries, thus the non-ferrous metal resources are recycled, and the high-purity polymetallic-element solid mixed salt has higher economic benefit and social benefit.

Description

technical field [0001] The invention belongs to the fields of chemical raw material manufacturing and recycling of waste resources, and specifically relates to the preparation of high-purity multi-metal element mixed salts for secondary lithium battery multi-element positive electrode materials and their precursor materials by using waste secondary lithium batteries as raw materials. Background technique [0002] Secondary lithium batteries have been used for 20 years since the 1990s. During these 20 years, secondary lithium batteries have been widely used in portable electronic appliances such as mobile phones, cameras, micro players, computers, and Bluetooth headsets. The output of lithium batteries is increasing year by year, and this year's output has reached 3 billion. At the same time, the positive electrode material of lithium ion batteries has also developed from the original lithium cobalt oxide to a mixed positive electrode material containing nickel, cobalt, and ma...

Claims

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Application Information

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IPC IPC(8): C01B17/62C01B9/02H01M10/54H01M4/58
CPCY02E60/12Y02E60/10Y02W30/84
Inventor 周汉章李长东王皓唐红辉刘更好廖折军谭群英
Owner GUANGDONG BRUNP RECYCLING TECH
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