FIELD: metallurgy.
SUBSTANCE: invention refers to method of fire copper refinement during secondary copper-containing material processing. Method involves copper-containing material melting with flux including silicon oxide, and with iron. Further obtained copper melt is oxidised at 1220-1240 °C. During oxidation, flux containing concentrated aegirine and silicon oxide SiO2 are added to the copper melt at the following ratio, wt %: concentrated aegirine 75-15 %, silicon oxide 25-85 %. Then slag is removed from copper melt.
EFFECT: enhanced degree of lead and nickel impurity removal by copper refinement, reduced temperature of slag melting during polymetallic zinc-containing raw copper material processing.
2 cl, 1 tbl, 1 ex
| Title | Year | Author | Number |
|---|---|---|---|
| METHOD OF PROCESSING TITANIUM-MAGNETITE CONCENTRATE | 2009 |
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RU2410449C1 |
| COPPER REFINING METHOD | 2012 |
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| METHOD OF REMOVING SCULL IN COPPER-REFINING FURNACES | 0 |
|
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| FLUX FOR REDUCING, REFINING, MODIFYING AND ALLOYING STEEL | 2009 |
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RU2396364C1 |
| IMPROVED PYROCLEANING METHOD | 2018 |
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