Specialized metallurgical processes – compositions for use therei – Processes – Free metal or alloy reductant contains magnesium
Patent
1997-04-30
1999-06-01
Kastler, Scott
Specialized metallurgical processes, compositions for use therei
Processes
Free metal or alloy reductant contains magnesium
C21B 1500
Patent
active
059084898
ABSTRACT:
The present invention relates to a process for removing antimony from hydrofluoric acid solutions which contain Ta/Nb and have an acidity of >18 N, by addition of a base metal reducing agent to the solution and heating at 40 to 60.degree. C. for 4 to 8 hours.
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patent: 5194232 (1993-03-01), Bludssus et al.
patent: 5209910 (1993-05-01), Bludssus et al.
Bludssus Walter
Bohmke Uwe
Reichert Karlheinz
Cohen Jerry
H.C. Starck GmbH & Co KG
Kastler Scott
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