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Moskovsky Institut Stali I Splavov

Valentin P Bystrov

Vladimir A Romenets

Askar M Kunaev

Valentin E Ziberov

Vladimir V Ivanov

Evgeny S Grin-Gnatovsky

Alexandr V Grechko

Dzhonson T Khagazheev

Valery V Mechev

Vladimir Y Zaitsev

Ivan V Savin

Boris I Kolesnikov

Nariman A Ramazanov

Andrei V Vanjukov

Vladimir D Nagibin

Veniamin B Meierovich

Sergei Y Golik

Petr A Alexandrov

Evgeny I Ezhov

Sauk T Takezhanov

Sultanbek M Kozhakhmetov

Almas B Umarov

Mikhail G Vasiliev

Alexandr M Pozhivanov

Nikolai A Tulin

Dmitry I Ryzhonkov

Evgeny Felixovich Vegman

Alexandr D Vaskevich

Andrei V Vanjukov, Deceased

Valery S Valavin

Valentina M Chizhikova

Anatoly B Glovatsky

Gennady L Gursky

Alexandr D Yatsenko-Zhuk

Vasily R Grebennikov

Vladimir G Guglya

Alexandr B Usachev

Alexei A Ugarov

Stanislav V Kremenevsky

Method for preparing ferrocarbon intermediate product for use in steel

A method for processing heavy nonferrous metal raw materials by heating and melting said raw materials in a molten slag with the formation of a heterogeneous melt consisting of a sulfide and an oxide phases. The melt is bubbled oxidized by injecting a gas containing not less than 35% oxygen at an intensity of about 200 to about 2000 m.sup.3 STP/h per square meter of horizontal section of 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 matte layer and/or a crude metal layer, each of which is tapped separately. A furnace for putting said method into effect is a shaft terminating in its bottom part by a hearth and having devices for tapping smelting products, whereas the top part is provided with orifices for feeding a charge and removing gaseous smelting products. The furnace has cooled side tuyeres 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 of 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.

Pyrometallurgical method and furnace for processing heavy nonferrous

A method for processing heavy nonferrous metal raw materials by heating and melting said raw materials in a molten slag with the formation of a heterogeneous melt consisting of a sulfide and an oxide phases. The melt is bubbled oxidized by injecting a gas containing not less than 35% oxygen at an intensity of about 200 to about 2000 m.sup.3 STP/h per square meter of horizontal section of 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. A furnace for putting said method into effect is a shaft terminating in its bottom part by a hearth and having devices for tapping smelting products, whereas the top part is provided with orifices for feeding a charge and removing gaseous smelting products. The furnace has cooled side tuyeres 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 of 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.

Pyrometallurgical method for processing heavy nonferrous metal raw

Growing community of inventors

Moscow, Russia

Valentin P Bystrov