Recovery of molybdenum and rhenium from concentrates by an electrooxidation-solvent extraction--carbon adsorption technique.
Pres At Intl Cong Inst Min Eng Santiago Chile 1980 Nov; :1-27
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.
Mining-industry; Laboratory-techniques; Analytical-processes; Solvent-extraction; Solvents; Molybdenum-compounds; Metals; Metal-compounds; Ammonium-compounds
7439-98-7; 7440-15-5; 13598-65-7
Pres. At Intl. Cong., Inst. Min. Eng., Santiago, Chile, Nov.23-29, 1980