COPPER REFINING METHOD Russian patent published in 2013 - IPC C22B15/14 C22B9/10 C22B7/00 

Abstract RU 2496894 C1

FIELD: metallurgy.

SUBSTANCE: method involves preparation of charge, its melting and oxidation of the obtained copper melt. Charge is prepared by classification of copper scrap and its cleaning from tin and lead solder, oxidation of copper melt is performed by batch supply to the melt of NaOH sodium hydroxide in the quantity of 0.5-3 wt % of the charge weight with simultaneous blowdown by means of oxygen-containing gas.

EFFECT: reduction of content of undesirable impurities in copper scrap melt; improvement of refining degree.

3 cl, 1 tbl

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RU 2 496 894 C1

Authors

Bobkova Irina Anatol'Evna

Dates

2013-10-27Published

2012-06-14Filed