METHOD FOR PRODUCING RAW SOLDERING PRODUCT AND COPPER PRODUCT Russian patent published in 2021 - IPC C22B13/02 

FIELD: metallurgy.

SUBSTANCE: invention relates to a method for producing raw soldering product and copper product. The method includes the stages of a) providing crude copper containing >=50 wt.% of copper together with >=1.0 wt.% of tin and/or >=1.0 wt.% of lead, and (i) purifying the first part of crude copper to produce a purified copper product together with at least one copper refining slag, (ii) extracting the first raw soldering product from the copper refining slag, forming a soldering refining slag in equilibrium with the first raw soldering product, and additionally includes the stage f) of contacting another part of crude copper with soldering refining slag, forming spent slag and lead-tin-based metal, followed by separating spent slag from the lead-tin-based metal.

EFFECT: increase in the productivity and the degree of extraction of the target metal is provided.

18 cl, 1 dwg, 1 ex, 24 tbl