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Saint Petersburg, Russia

Tsymbulov L.B.,JS Gipronickel Institute
Canadian Metallurgical Quarterly | Year: 2011

A brand new process of blister copper production from copper matte and concentrates in the two-zone Vaniukov converter has been developed at the Gipronickel Institute facility. Thermodynamic analysis of exchange interaction has been performed for the 'slag melt-metal phase formed in the over-the-lance area of the Vaniukov converter reduction zone' system and for 'slag melt-bottom phase of blister copper located in the bottom (under-the-lance) area of the Vaniukov converter' system. Based on the thermodynamic analysis data, the original design of the two-zone Vaniukov converter has been proven to be able to create conditions ensuring production of blister copper of higher quality, as compared to the one-zone Vaniukov converter process, copper concentration in slag being substantially lower. Source

Tsymbulov L.B.,JS Gipronickel Institute | Knyazev M.V.,JS Gipronickel Institute | Tsemekhman L.Sh.,JS Gipronickel Institute
Canadian Metallurgical Quarterly | Year: 2011

Gipronickel Institute is developing a brand new process of Kempirsay Deposit' nickel oxide ore treatment to ferronickel based on Vaniukov Furnace smelting technology. Results of the extended laboratory scale tests using the pilot Vaniukov two-zone Furnace are presented. It is demonstrated that treatment of relatively poor nickel oxide ore (Ni, 1.05 mass-%) according to the abovementioned technology can result in production of high grade ferronickel (Ni>20%) at high nickel recovery (>90%). Technological peculiarities of the processes taking place in the furnace' smelting and reduction areas are considered. Source

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