Abstract
An electrolytic process for molybdenum extraction in a KCl−K3MoCl4 electrolyte (containing approximately 7.5 wt pct molybdenum) was investigated using three types of anode feed —namely, molybdic oxide-graphite, molybdenum sesquisulfide-graphite, and molybdenum sesquisulfide without graphite. In the case of molybdic oxide-graphite anode, a maximum current efficiency of 99 pct was achieved at an operating voltage of 0.35V, a cathode current density of 5000 A/m2 (450 A/f2) and a bath temperature of 1223 K. Electrolysis with molybdenum sesquisulfide-graphite, at an operating voltage of 1.2V, a cathode current density of 13,900 A/m2 (1250 A/f2) and a bath temperature of 1173 K, yielded a maximum current efficiency of 84 pct. Electrolysis of molybdenum sesquisulfide without graphite incorporation, yielded under almost similar conditions, a maximum current efficiency of 87 pct. Extended electrolysis was carried out using molybdic oxide-graphite and molybdenum sesquisulfide cell charges and yielded metal with purity over 99.9 pct.
Similar content being viewed by others
References
H. J. Heinen and J. B. Zadra: U.S. Bur. Mines Rept. Invest. No. 6444, 1964, p. 17.
H. J. Heinen and D. H. Baker, Jr.: U.S. Bur. Mines Rept. Invest. No. 6834, 1966, p. 11.
H. J. Heinen, C. L. Barber, and D. H. Baker, Jr.: U.S. Bur. Mines Rept. Invest. No. 6590, 1965, p. 14.
A. K. Suri and C. K. Gupta:J. Less-Common Metals, 1973, vol. 31, no. 3, p. 389.
T. K. Mukherjee and C. K. Gupta:Met. Trans, 1974, vol. 5. p. 707.
T. K. Mukherjee, G. R. Kamat, and C. K. Gupta: Accepted for publication inTrans. Indian Inst. Metals.
O. K. Mehra, D. K. Bose, and C. K. Gupta:Met. Trans., 1973 vol. 4, p. 691.
A. K. Suri, D. K. Bose, and C. K. Gupta.Met. Trans., 1974, vol. 5, p. 451.
A. K. Suri and C. K. Gupta.Trans. Indian Inst. Metals, 1973, vol. 26, no. 6, p. 19.
C. E. Wicks and F. E. Block: U.S. Bur. Mines Bull. No. 605, No. 13622, Dec. 1961.
F. P. Haver, K. Uchida, and M. M. Wong: U.S. Bur. Mines Rept. Invst. No. 7185, 1968, p. 15.
Author information
Authors and Affiliations
Additional information
The paper presents a part of the thesis submitted by A. K. Suri to the University of Bombay, India.
Rights and permissions
About this article
Cite this article
Suri, A.K., Gupta, C.K. Electrolytic recovery of molybdenum from molybdic oxide and molybenum sesquisulfide. Metall Trans B 6, 453–456 (1975). https://doi.org/10.1007/BF02913831
Received:
Issue Date:
DOI: https://doi.org/10.1007/BF02913831