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

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...

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 copper-aluminum mixture directly, and the copper-aluminum mixture contains copper and aluminum. It will fluctuate with different battery models, coupled with different particle sizes, direct sales will result in low recycling value; there are also some processes for recycling copper-aluminum mixtures through equipment, but the existing copper-aluminum recycling technology, copper-aluminum separation The cost is high, and more nickel, cobalt, manganese, graphite and other elements are included after separation, and the impurity rate is high