Refining of metals

Details Refining of metals Refining of metals

1975-03-18

1978-04-25

Andrews, M. J.

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75113, 75121, 423 44, 423 46, 423 88, 423 96, 423 97, 423108, 423149, 423493, 423494, C22B 1100

Patent

active

040860841

ABSTRACT:
This invention relates to refining platinum group metal concentrates and the separation therefrom of silver and of the majority of base metals with which they naturally occur. In more detail the process comprises the steps of:

REFERENCES:
patent: 1235655 (1917-08-01), Cleaves
patent: 2277220 (1942-03-01), Gailey
patent: 2452665 (1948-11-01), Kroll
patent: 2835569 (1958-05-01), Reynaud et al.

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