Method for recovering rare and precious metal from copper anode slime copper leaching liquid

Abstract

The invention relates to a method for recovering rare and precious metal from copper anode slime copper leaching liquid. The method comprises the following steps that 1, rare and precious metal are strengthened and reduced form the copper anode slime copper leaching liquid; and 2, ultrafine particles of rare and precious metal are precipitated, and purification of the copper leaching liquid is synergistically conducted. According to the method for recovering the rare and precious metal from the copper anode slime copper leaching liquid, the copper leaching liquid is pre-treated through the process and can be effectively purified, and the impurity content is reduced, the key point is that the rare and precious metal is efficiently and synergistically recovered, so that the rare and preciousmetal which is dissolved and dispersed in the copper leaching liquid at an ionic state and ultrafine particle state are effectively reduced and enriched, and rare and precious metal concentrate is obtained; and the concentrate is high in valuable element grade and single in element state, and is a source of high quality raw materials for recovering the rare and precious metal, and the method forrecovering the rare and precious metal from the copper anode slime copper leaching liquid has the advantages of high process adaptability, high reduction rate, less impurities and high efficiency.

Description

technical field [0001] The invention belongs to the technical field of recycling rare and precious metals in non-ferrous metal copper smelting systems, in particular to a process for recovering rare and precious metals such as gold, platinum, palladium, selenium, tellurium, etc. A method for recovering rare and precious metals from liquid. Background technique [0002] Copper anode slime is a by-product produced during the copper electrolytic refining process of the anode plate obtained by pyrometallurgy. , silver, platinum, palladium, selenium, tellurium and other rare and precious metals and heavy metals such as copper, lead, bismuth, tin and antimony are important sources of raw materials for the recovery of rare and precious metals and non-ferrous heavy metals. It is one of the important factors for the economic benefits of copper smelting enterprises. [0003] At present, the relatively mature treatment process of copper anode slime is to pre-treat elements such as co...

AI Technical Summary

Problems solved by technology

There are many technical achievements in recovering platinum and palladium in gold-immersion liquid and gold and silver electrolysis waste liquid; Fujita Kenichi invented a "method for recovering precious metals from precious metal fine particle dispersion liquid" with application number 01121037.0, mainly for solvents In the precious metal particle dispersion liquid containing gold or silver particles dispersed in the medium, add a compound with a mercapto group as a coagulant to make the precious metal particles condense, and then separate the condensed precious metal particles from the solvent. Different systems, so far, there is no relevant technical achievement on the comprehensive recovery of precious metals platinum and palladium in the copper separation liquid. For example, gold, platinum, palladium and other precious metals dispersed in the copper separation liquid are not recovered, and the further dispersion and loss of precious metals will cause permanent loss. , affects the economic benefits of the enterprise to a certain extent, and does not use the recovery of rare and precious metals and the reserve of metals