Method for preparing aluminum and white copper alloy by utilizing recovery of waste lithium battery

A waste lithium battery and alloy technology, applied in the direction of improvement of process efficiency, furnace type, furnace, etc., can solve the problems of natural environment and human health threats, high cost of copper and aluminum separation, different particle sizes, etc., and achieve fast production efficiency , low pollution, high safety effect

Inactive Publication Date: 2019-07-16
先进储能材料国家工程研究中心有限责任公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, power batteries have a certain service life. After a period of use, more waste batteries need to be replaced, and waste batteries contain metal nickel, cobalt, manganese, aluminum, etc. If these elements are not treated, they will be harmful to the natural environment and human beings. There is a greater threat to health and a greater waste of resources
After the traditional waste lithium battery is pretreated, the copper-aluminum mixture, active material powder, diaphragm, etc. will be sorted out. The current practice is to sell the

Method used

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Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0013] A method for preparing aluminum-nickel-nickel alloy by recycling waste lithium batteries, carried out according to the following steps,

[0014] (a) Crushing the waste lithium battery and sorting the active material powder and the mixed powder containing copper and aluminum; the crushing includes two steps of coarse crushing and fine crushing, and the active material powder generally contains nickel, cobalt, manganese, lithium, and graphite powder And a small amount of copper and aluminum elements, the mixed powder containing copper and aluminum contains copper, aluminum and a small amount of active material powder; the sorted mixed particles containing copper and aluminum are placed in a sieving machine to screen out copper-rich materials; after testing, In the copper-rich material, the mass content of copper is 88%, the mass content of aluminum is 9%, and the total mass content of nickel, cobalt, manganese, lithium, graphite, etc. is 3%;

[0015] (b) Melt the copper-r...

Embodiment 2

[0021] A method for preparing aluminum-nickel-nickel alloy by recycling waste lithium batteries, the steps of which are basically the same as those of the method for preparing aluminum-nickel-nickel alloy by recycling waste lithium batteries in Example 1, except that:

[0022] 1. In step (a), after testing, in the copper-rich material, the mass content of copper is 97%, the mass content of aluminum is 2%, and the total mass content of nickel, cobalt, manganese, lithium, graphite, etc. is 1%;

[0023] 2. In step (b), the temperature of the refining reverberatory furnace is controlled to be 1350° C., and the melting time is controlled to be 4 hours; the auxiliary reductant is natural gas with a pressure of 0.2 Mpa, and the quality of natural gas added is based on the content of sulfur in the semi-finished alloy product. 0.009% is controlled; the flux uses quartz stone with a silicon dioxide content of more than 90%, and the added quality of quartz stone is 3% of the added mass of...

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PUM

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Abstract

The invention provides a method for preparing an aluminum and white copper alloy by utilizing the recovery of a waste lithium battery. The method comprises the following steps: the waste lithium battery is crushed, and active material powder and mixed particles containing copper and aluminum are separated out; the separated-out mixed particles containing copper and aluminum are put into a screening machine, and a copper-rich material is screened out; the screened-out copper-rich material is put into a refining reverberatory furnace of 1250-1350 DEG C for being molten; then, an auxiliary reducing agent and a flux are added into a molten product; an alloy semi-finished product is obtained after stirring and slag dredging for a certain period of time; according to the value of deviation between the mass contents of all metal elements in the alloy semi-finished product and those of all metal elements required for the preparation of the aluminum and white copper alloy, corresponding pure metal is added into the alloy semi-finished product; and the aluminum and white copper alloy is formed through refining, stirring, slag dredging and casting in the refining reverberatory furnace. The method provided by the invention has the beneficial effects that the process is simple and novel, the product purity is high, and the pollution is relatively low.

Description

technical field [0001] The invention relates to a method for preparing aluminum-nickel-nickel alloy by recycling waste lithium batteries. Background technique [0002] Environmental pollution and oil energy crisis have jointly promoted the development of electric vehicles and power batteries. With the rapid development of domestic electric vehicles, the usage of power batteries will gradually increase. However, power batteries have a certain service life. After a period of use, more waste batteries need to be replaced, and waste batteries contain metal nickel, cobalt, manganese, aluminum, etc. If these elements are not treated, they will be harmful to the natural environment and human beings. Health poses a greater threat, and there will be a greater waste of resources. After the traditional waste lithium battery is pretreated, the copper-aluminum mixture, active material powder, diaphragm, etc. will be sorted out. The current practice is to sell the copper-aluminum mixtur...

Claims

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Application Information

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IPC IPC(8): C22B7/00C22B15/14C22C9/01C22B15/04C22C1/02
CPCC22B7/001C22B15/0052C22B15/0056C22C1/02C22C9/01Y02P10/20
Inventor 钟发平黄林波杨先锋
Owner 先进储能材料国家工程研究中心有限责任公司
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