C - Chemistry – Metallurgy – 22 – B
Patent
C - Chemistry, Metallurgy
22
B
C22B 7/04 (2006.01) C22B 15/00 (2006.01) C22B 23/00 (2006.01) C22B 23/02 (2006.01)
Patent
CA 2270850
The invention relates to a process for recovery of metals such as Cu, Ni, and Co from slag formed during the smelting process. Upon smelting, a slag layer is skimmed from a matte layer, containing valuable metals. Metal from the matte layer becomes entrained in slag skimmed from matte. To recover metal from matte- enriched slag, slag skulls are formed which comprise layers of solidified matte- enriched slag. Slag skulls are cooled and broken into pieces selected for high metal concentration, which. may then be either fed directly to a smelter, be further concentrated by grinding and flotation or may be upgraded using conventional gravity separation techniques such as a shaking table. Valuable metals so recovered may be added back into a smelting process.
Lachance Claude
Lachance Maurice
C.m.l. Industrial Services (1039574) Ontario Inc.
Gowling Lafleur Henderson Llp
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