Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1997-10-01
1999-10-05
Kastler, Scott
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
75961, 423 94, 423494, 423 98, C21B 1500, C01G 1704, C01G 900, B01D 1100
Patent
active
059616911
ABSTRACT:
The present invention is concerned with a process for extracting and recovering lead or lead derivatives in high purity from various materials containing lead sulphate, and particularly copper smelter flue dusts. The present process also allows the substantially complete recovery or recycling of precious metals otherwise lost in flue dusts wastes.
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Guimont Jean
Pinard Denys
Kastler Scott
McGuthry-Banks Tima
Noranda Inc.
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