IMPROVEMENT OF PRODUCTION OF COPPER/TIN/LEAD Russian patent published in 2022 - IPC C22B7/04 C22B15/00 

FIELD: metallurgy.

SUBSTANCE: invention relates to the production of non-ferrous metals by hydrometallurgy. A molten copper metal composition contains, wt.%: 57-85 of Cu, ≥3.0 of Ni, ≤0.8 of Fe, 7-25 of Sn and 3-15 of Pb. A method for joint production of a molten copper composition and solder from primary and/or secondary raw materials includes partial oxidation of a black copper composition containing, wt.%: at least 50 of copper, at least of 1.0 tin, at least 1.0 of lead, with the formation of the first copper-rich metal phase and the first copper refining slag, separation of the first copper refining slag from the first copper phase, partial oxidation of the first copper metal phase with the formation of the second copper-rich metal phase and the second copper refining slag, their separation with the extraction of at least 37.0 wt.% of the total amount of tin and lead, partial oxidation of the second copper-rich metal phase with the formation of the third copper-rich metal phase and the third copper refining slag, followed by their separation, addition of at least part of the second or the third copper refining slag to a metal composition containing copper together with tin and/or lead with the formation of the first liquid bath, partial oxidation of the first liquid bath with the formation of a molten dilute copper metal composition and solder refining slag, followed by their separation.

EFFECT: invention is aimed at improving the separation of copper and solder in their joint production, as well as obtaining copper and solder products with a higher degree of purity.

11 cl, 24 tbl, 1 dwg