FORFARANDE FOR UTVINNING AV ICKE-JERNMETALLER UR SULFIDISKA MATERIAL GENOM ROSTNING OCH LAKNING

A method for recovering copper and/or other non-ferrous metals from sulphidic raw material by roasting the material to a substantially sulphur-free state and then in a separate furnace sulphatize the roasted material into a form of a readily soluble sulphate and/or basic sulphate and then leaching t...

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Bibliographische Detailangaben
Hauptverfasser:	T K MIOEN, I A O EDENWALL, K G GORLING, J-O JANSSON
Format:	Patent
Sprache:	swe
Schlagworte:	CHEMISTRY COMPOUNDS THEREOF FERROUS OR NON-FERROUS ALLOYS INORGANIC CHEMISTRY METALLURGY NON-METALLIC ELEMENTS PRETREATMENT OF RAW MATERIALS PRODUCTION AND REFINING OF METALS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A method for recovering copper and/or other non-ferrous metals from sulphidic raw material by roasting the material to a substantially sulphur-free state and then in a separate furnace sulphatize the roasted material into a form of a readily soluble sulphate and/or basic sulphate and then leaching the sulphatized material with an aqueous sulphuric acid solution. Copper and/or other non-ferrous metals are recovered from the spent leaching solution. The leaching solution is after said recovering recirculated to the leaching stage and to the roasting stage.