Method and apparatus for manufacturing high-grade nickel matte

Details Method and apparatus for manufacturing high-grade nickel matte Method and apparatus for manufacturing high-grade nickel matte

C - Chemistry, Metallurgy

22

B

39/2, 53/300, 30

C22B 4/08 (2006.01) C01G 53/11 (2006.01) C01G 53/12 (2006.01) C22B 5/02 (2006.01) C22B 5/10 (2006.01) C22B 5/12 (2006.01) C22B 7/02 (2006.01) C22B 7/04 (2006.01) C22B 15/06 (2006.01) C22B 23/02 (2006.01) F27B 19/02 (2006.01) F27B 19/04 (2006.01)

Patent

CA 2008167

The invention relates to a method and apparatus for manufacturing high-grade nickel matte. In the method of the invention comprises, a concentrate under treatment, together with flux, recirculated flue dust and oxidizing gas is fed into a suspension smelting furnace. In the suspension smelting furnace there is formed slag and high- grade nickel matte. At least the slag from the suspension furnace is conducted into an electric furnace where it is reduced, in the presence of a reducing agent so that the electric furnace slag and metallicized matte are formed and at least part of the metallicized matte from the electric furnace is returned as feed to the suspension smelting furnace. The apparatus for carrying out the method of the invention comprises a suspension smelting furnace and an electric furnace.

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