C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/351
C22B 5/08 (2006.01)
Patent
CA 1181955
ABSTRACT OF THE DISCLOSURE The present invention provides a method for producing a metal matte from a non-ferrous metal-containing sulfide mineral concentrate in a horizontally disposed furnace wherein a molten charge of metal matte and slag are present, beneath an enclosed hot atmosphere, an exhaust gases, metal matte and slag are separa- tely discharged therefrom, the improvement wherein loss of non- ferrous metals is averted comprising: (a) introducing said sulfide concentrate, flux and an oxygen-rich gas into an enclosed hot sul- fur dioxide rich atmosphere so as to effect flash oxidation of the sulfide concentrate therein prior to contact of said concentrate with the molten slag; and (b) sprinkling melted iron sulfide-rich sulfide concentrate into the furnace by means of a burner, using fossil fuel and oxygen-rich gas as the main heat source therefor, to spread the same onto the slag, at a location adjacent and downstream from the introduction of said sulfide mineral concentr- ate, flux and oxygen-rich gas and spaced from the discharge for said slag.
456419
Queneau Paul E.
Schuhmann Reinhardt Jr.
Marks & Clerk
Queneau Paul E.
Schuhmann Reinhardt Jr.
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