C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
53/351, 39/58
C22B 7/00 (2006.01) F27B 1/00 (2006.01)
Patent
CA 1123206
Abstract of the Disclosure A method for processing heavy nonferrous metal raw ma- terials by heating and melting said raw materials in a mol- ten slag with the formation Or a heterogeneous melt consis- ting of a sulfide and an oxide phases. The melt is bubbled oxidized by injecting a gas containing not less than 35% oxygen at an intersity of about 200 to about 2000 m3 STP/h per square metra of horizontal section Or the melt with the effect that the melt is divided into a top bubbled part and a bottom calm part comprising a slag layer, a mattelayer and/or a crude metal layer, each of which is tapped separately. furnace for putting said method into effect is a shaft ter- minating in its bottom part by a hearth and having devices for tapping smelting products, whereas the top part 13 provided with orifices for feeding a charge and removing gaseous smelting products. The furnace has cooled side tuy- eres set at a level dividing the shaft into two vertical parts. The device for tapping slag from the bottom part of the slag layer is formed with a recipient communicating with the internal cavity or the shaft by means of a duct arranged below the tuyere level, but above the level of the matte inside the shaft. Said technological sequence of operations and the furnace design provide a possibility of separating polymetallic raw materials by a single-stage process into smelting products and denuded slag. It is most effective to employ the present. invention for processing high-sulfur copper, nickel, copper-nickel and copper-zinc raw materials.
316811
Alexandrov Petr A.
Bystrov Valentin P.
Ezhov Evgeny I.
Golik Sergei Y.
Grechko Alexandr V.
Balkhashsky Gorno-Metallurgichesky Kombinat Imeni 50-Letia Oktya
Institut Metallurgii I. Obogaschenia Akademii Nauk Kazakhskoi Ss
Moskovsky Institut Stali I. Splavov
Norilsky Gorno-Metallurgichesky Kombinat
Swabey Ogilvy Renault
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