2015-Sustainable Industrial Processing Summit
SIPS 2015 Volume 5: Vanyukov Intl. Symp. / Non-ferrous & KIVCET
| Editors: | Kongoli F, Kozlov P, Tsymbulov L, Fedorov A, Shumskiy V |
| Publisher: | Flogen Star OUTREACH |
| Publication Year: | 2015 |
| Pages: | 310 pages |
| ISBN: | 978-1-987820-28-7 |
| ISSN: | 2291-1227 (Metals and Materials Processing in a Clean Environment Series) |
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Method of Copper-Nickel Matte Continuous Converting in Vaniukov Furnace to Blister Copper, Dump Slag and German Silver, a Marketable Copper-Nickel Alloy
Leonid Tsymbulov1; Michael Kniazev2; Victor Tozik3; Sergei Pigarev4; Vladimir Fomichev3; Vladimir Lazarev3;1JS GIPRONICKEL INSTITUTE, Saint-Petersburg, Russian Federation; 2LLC, Sankt-Peterburg, Russian Federation; 3OJSC - MMC, Norilsk, Russian Federation; 4LLC, Saint Petersburg, Russian Federation;
Type of Paper: Regular
Id Paper: 153
Topic: 6
Abstract:
A new method of nickel-containing copper matte continuous converting to blister copper and dump slag was developed at Gipronickel Institute as an alternative to the previously created technology of continuous converting in Two-zone Vaniukov Furnace to blister copper and recirculating slag, the latter being delivered to nickel production site for further processing. The new process differs from the previous one in that the slags formed during oxidising smelting of nickel-containing copper matte to blister copper are subject to deep cleaning by copper, nickel and cobalt to get dump slag. The target is achieved through successive running of the converting and slag cleaning stages in a train of two One-zone Vaniukov Furnaces. In the first Furnace, converting to blister copper and slag rich in copper, nickel and cobalt oxides take place, the latter being delivered to the second Furnace where its cleaning is performed in the presence of carbon-based fuel and coal. The process of reduction results in formation of dump slag and copper-nickel alloy containing some iron as an impurity. Cu/Ni ratio contained in the metallic melt formed in the second Furnace makes ~3-4/L, which corresponds to the Cu/Ni grade ratio in German silver, a valuable and widely used copper-nickel alloy. The produced copper-nickel alloy is further subject to oxidising refining to get the marketable product. One of the advantages of the new process flow-sheet is a substantial decrease of price of German silver produced from the continuous converting by-product as compared to that traditionally produced from pure metals.
References:
sulfide materials to produce blister copper // RF Patent No 2359046 dated 09.01.2008.[2] Tsemekhman L.S., Tsymbulov L.B., Knyazev M.V., Kaitmazov N.G., Fomichev V.B. Continuous converting of copper and copper-nickel mattes. Today’s condition and results of investigations // Non-ferrous metals - 2009. No 9. pp. 43-48.
[3] Tsymbulov L.B., Pigarev S.P., Selivanov E.N., Chumarev V.M. Structure and properties of slags from continuous converting of copper Ni-containing mattes and concentrates. Part I. Effect of flux components consumption on the structure and liquidus temperature of slags. // Metals. 2011. No 3. pp. 3-14.
[4] Pigarev S.P., Tsymbulov L.B., Selivanov E.N., Chumarev V.M. Structure and properties of slags from continuous converting of copper Ni-containing mattes and concentrates. Part II. Effect of SiO2 / CaO ratio on the structure and liquidus temperature of slags. // Metals. 2012. No 2. pp 3-11.
[5] Tsymbulov L.B. Composition and characteristics of slags from continuous converting of copper matte and concentrate (Keynote) / Leonid Tsymbulov, Florian Kongoli, Sergey Pigarev // Fray International Symposium, Metals and Materials Processing in a Clean Environment. 2011, Vol.1: Sustainable Non-Ferrous Smelting in 21st Century (FIS), 2012, pp. 229-249.
[6] Pigarev S.P., Tsymbulov L.B., Istomin S.A., Selivanov E.N., Chumarev V.M. Structure and properties of slags from continuous converting of copper Ni-containing mattes and concentrates. Part IV. Effect of temperature and composition of the slag on viscosity of slag melts // Metals. 2013. No 2. Pp.13-21.
[7] Pigarev S.P., Tsymbulov L.B., Selivanov E.N., Chumarev V.M., Krasikov S.A. Structure and properties of slags from continuous converting of copper Ni-containing mattes and concentrates. Part III. Effect of slag composition on the surface tension and density of slags // Metals. 2012. No 6. pp. 3-9.
[8] Pigarev S.P. Structure and properties of slag melts from continuous converting of copper Ni-containing mattes and concentrates. Abstract of PhD thesis. St. Petersburg. 2013. 21 pp.
[9] Kupryakov Y.P. Copper smelter slags and their processing. - Moscow: Metallurgy, 1987.-200 pp.
[10] GOST 492-2006 Nickel, Ni and Cu-Ni alloys subject to working. Grades. Moscow, Standartinform. 2007.