Process for the recovery of rhenium and molybdenum values from molybdenite concentrate
Abstract
Abstract PROCESS FOR THE RECOVERY OF MOLYBDENUM AND RHENIUM FROM MOLYBDENITE WHICH COMPRISES: OXIDIZING THE MOLYBDENUM IN THE MOLYBDENITE CONCENTRATE SLURRY TO THE HEXAVALENT FROM WITH OXYGEN OR OXYGEN-CONTAINING GASES AND LESS THAN A STOICHIOMETRIC AMOUNT OF NITRIC ACID FOR THE SULFIDE SULFUR PRESENT, RECOVERING MOLYBDENUM AND RHENIUM VALUES FROM THE RESULTING SOLUTION WHEN IT CONTAINS UP TO 600 G./L. OF SULFURIC ACID WITH AN AMINE OR QUATERNARY AMMONIUM TYPE EXTRACTANT, REMOVING THE MOLYBDENUM AND RHENIUM VALUES FROM THE EXTRANT WITH AMMONIUM HYDROXIDE, SELECTIVELY RECOVERING RHENIUM VALUES FROM THE ESULTING ALKALINE SOLUTION WITH A QUA TERNARY AMMONIUM TYPE EXTRACTANT, RECOVERING THE REMAINDER OF THE MOLYBDENUM VALUES FROM THE ELUATE, STRIPPING RHENIUM FROM THE EXTRACTANT WITH PERCHLORIC ACID OR POR PERCHLORATE SALT AND RECOVERING RHENIUM FROM THE STRIPPING SOLUTION.
Inventors
- 👤 E Daugherty
- 👤 A Erhard
- 👤 J Drobnick
Bibliographic Details
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