METHOD FOR PROCESSING ELECTRONIC CROWBAR, Predominantly ELECTRONIC BOARDS

摘要

A method of processing electronic scrap, mainly electronic circuit boards containing precious metals, including grinding the scrap, beneficiation with the separation of the metal part by magnetic and electrical separation methods, tailings, consisting of a polymer base of the boards, the extraction of precious metals from the obtained concentrates, characterized in that the tailings are pulp in water with a ratio of W: T of at least 7 in the presence of lignosulfonate with a flow rate of the last 1-3 kg / t solid, finely dispersed are extracted from the resulting pulp astitsy noble metals by flotation, wherein the collector is used as the FIM sodium dialkyl-1522 at a rate of 50-500 g / t, and the flotation is carried out in a weakly acid environment at pH 3-4.