Process for the recovery of lead and silver chlorides

Details Process for the recovery of lead and silver chlorides Process for the recovery of lead and silver chlorides

1981-04-20

1985-12-03

Doll, John

Specialized metallurgical processes, compositions for use therei

Processes

Free metal or alloy reductant contains magnesium

75114, 75120, 75118R, 75 78, 423 27, 423 39, 423 94, 423 98, C22B 1304, C01G 2116, C01G 502

Patent

active

045564221

ABSTRACT:
A process for selectively leaching lead and silver chlorides from a sulfide ore residue in a rapid time which comprises brine leaching the residue under pressure at a temperature above the normal boiling point of the solution, preferably above 100.degree. C.
Modifications are leaching at the agglomeration temperature of sulfur when present in the residue to agglomerate the sulfur for ease of recovery, and flashing from leach temperature to ambient as a lead chloride crystallization recovery step to produce a large crop of lead chloride crystals per pass.

REFERENCES:
patent: 1396740 (1921-11-01), Ganelin
patent: 1951342 (1934-03-01), Bradley
patent: 3172753 (1965-03-01), Walsh
patent: 3764490 (1973-10-01), Chambers
patent: 4082629 (1978-04-01), Milner
patent: 4135993 (1979-01-01), Um
patent: 4276084 (1981-06-01), Reynolds
International Critical Tables, vol. 7, (1st ed.), McGraw-Hill, N.Y., 1930, pp. 313-316.

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