Allen M Alper

US Patent:

40062120, Feb 1, 1977

Filed:

Sep 10, 1975

Appl. No.:

5/612097

Inventors:

Allen Myron Alper - Towanda PA
Carl William Boyer - Wysox PA
Brice Eugene Martin - Towanda PA

Assignee:

GTE Sylvania Incorporated - Stamford CT

International Classification:

C01G 3900
C01G 4700

US Classification:

423 49

Abstract:

In the recovery of molybdenum and rhenium values from sulfide ores, silica impurity is reduced to low levels by adding alumina to a carbonate fusion mix in an amount sufficient to combine with the silica present to form insoluble aluminum silicates, thus preventing its removal from the fusion mass during removal of soluble molybdenum and rhenium values by leaching, and thereby avoiding the necessity for conventional subsequent precipitation and filtration removal steps.