Process and its products for spent lithium-ion batteries treatment

Abstract

This invention discloses a process and its products for spent lithium-ion batteries treatment, which relates to the field of spent battery treatment technology. This process comprises: fully discharging spent lithium-ion batteries to obtain discharged spent lithium-ion batteries; crushing spent lithium-ion batteries to obtain crushed products of spent lithium-ion batteries; screening crushed products of spent lithium-ion batteries by screens to obtain an overflow and an underflow; sorting the overflow to obtain separator products, plastic products, iron products, copper foil products and aluminum foil products; mechanochemically activating the underflow to obtain activated products; acid leaching the activated products by degradable organic acid to obtain a mixture containing activated products and the organic acid leaching solution; filtering the mixture which contains the activated products and the organic acid leaching solution to obtain graphite as filter residues. Copper mud products and LiNiCoAlOcan be obtained after further treatments. This process can effectively recover recyclable resources in spent lithium-ion batteries, and reduce pollution of heavy metals.