C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/279
C22B 15/00 (2006.01) C22B 1/02 (2006.01) C22B 15/02 (2006.01)
Patent
CA 1073215
PRODUCTION OF BLISTER COPPER DIRECTLY FROM ROASTED COPPER-IRON SULFIDE CON- CENTRATES Abstract of Disclosure A method is provided for producing blister copper from calcined copper-iron sulfide concentrates wherein the calcine containing copper ferrite is mixed with particulate carbonaceous reducing agent and charged into a smelting fur- nace, slag-forming ingredients being also added to slag off iron oxide 7 The charge, in the form of a shallow bed, is smelted by applying heat whereby the temperature is raised to above the melting point of copper, the copper oxide being selectively reduced to form blister copper, the iron oxide being reduced to form substantial amounts of ferrous oxide, the iron oxide combining with SiO2 present in the charge to form a slag and assure a low-iron copper product. Following reduction of the copper to molten blister copper, it is separa- ted from the slag for further purification treatment, the slag being further treated when necessary to recover contained cop- per therefrom.
246460
Cusanelli Dominic C.
Opie William R.
Rajcevic Harold P.
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