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Recovery of molybdenum and rhenium from concentrates by an electrooxidation-solvent extraction--carbon adsorption technique.

Authors
Scheiner-BJ; Pool-DL
Source
Pres At Intl Cong Inst Min Eng Santiago Chile 1980 Nov; :1-27
Link
NIOSHTIC No.
10006784
Abstract
The Bureau of Mines has demonstrated an electrooxidation-solvent extraction-carbon adsorption technique for recovering molybdenum and rhenium from offgrade concentrates in a process research unit (pru) operating at a feed rate of 3.4 to 4.7 Lb of concentrate per hour. The flow sequence consists of metal values by electrooxidation, liquid-solid separation by thickening, acidification and chlorate ion removal by sulfur dioxide treatment, solvent extraction to concentrate the molybdenum and rhenium, separation of molybdenum and rhenium by carbon adsorption, and metal recovery by crystallization. Molybdenum and rhenium were recovered as ammonium paramolybdate and ammonium perrhenate. Based on pru results, an industrial-sized cell was constructed and tested for extraction of metal values from offgrade molybdenite concentrates.
Keywords
Mining-industry; Laboratory-techniques; Analytical-processes; Solvent-extraction; Solvents; Molybdenum-compounds; Metals; Metal-compounds; Ammonium-compounds
CAS No.
7439-98-7; 7440-15-5; 13598-65-7
Publication Date
19801101
Document Type
OP
Fiscal Year
1981
NTIS Accession No.
NTIS Price
Identifying No.
OP 20-81
NIOSH Division
RERC
Source Name
Pres. At Intl. Cong., Inst. Min. Eng., Santiago, Chile, Nov.23-29, 1980
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