Refining of bismuth

Details Refining of bismuth Refining of bismuth

1992-04-14

1993-08-10

Andrews, Melvyn J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

C22B 3006

Patent

active

052344924

ABSTRACT:
An improved process for deleading debismuthized dross is provided wherein the upgraded dross is treated by cupellation to form a slag until the level of bismuth in the upgraded dross reaches about 45% by weight. After cupellation, the partially deleaded upgraded dross may be treated by conventional means such as halogenation to provide a substantially pure bismuth product.

REFERENCES:
patent: 4039323 (1977-08-01), DiMartini et al.

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