Magnesium-calcium alloys for debismuthizing lead

Details Magnesium-calcium alloys for debismuthizing lead Magnesium-calcium alloys for debismuthizing lead

1989-12-05

1991-08-20

Chaudhuri, Olik

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75702, 420402, C22B 1308

Patent

active

050411608

ABSTRACT:
A novel alloy for use in lead refining is disclosed comprised substantially of magnesium and calcium. The preferred ratio on a weight basis of magnesium to calcium is between about 1.2:1 to about 5.2:1. A method of refining a lead bath with the novel alloy is disclosed which provides a high recovery ratio of impurities present therein.

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patent: 2129445 (1938-09-01), Rehns
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patent: 4881971 (1989-11-01), Thom
Dietrich Evers, Hagen, "Die Entwismutierung . . . ", Erzmetall Band II (1949) 160.
Metals Handbook, vol. 8, pp. 280 and 351.

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