Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1978-11-13
1980-07-15
Andrews, M. J.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75 24, 75113, 423 94, 423 96, 423618, C22B 2500
Patent
active
042126665
ABSTRACT:
Tin is recovered from a molten tin-bearing silicate slag by stirring the molten slag in the presence of calcium chloride and a carbonaceous material. The tin in the slag is rapidly converted to a volatile tin chloride compound, which is removed and contacted with a hot calcium chloride solution trickling over a bed of limestone rock to precipitate tin oxide, which is separated from the calcium chloride solution, which may be reused.
REFERENCES:
patent: 1817865 (1931-08-01), Ashcroft
Barnes Wilson R.
King Edwin B.
Pommier Luis W.
Andrews M. J.
Associated Metals & Minerals Corporation
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