Precipitation of sodium silicofluoride (Na2SiF6) and cryolite (Na3AlF6) from HF/HCl leach liquors of alumino-silicates

Hydrometallurgy

Volumn 104, Issue 2, 2010, Pages 304-307

  Kumar, Manoj ^a   Babu, M Nani ^c   Mankhand, T R ^b   Pandey, B D ^a  

^a NATIONAL METALLURGICAL LABORATORY   (India)

^b BANARAS HINDU UNIVERSITY   (India)

^c INDIRA GANDHI CENTRE FOR ATOMIC RESEARCH   (India)

Author keywords

Alumino silicates; Cryolite; HF HCl leach; Molybdenite concentrate; Na 2SiF6; Na3AlF6; Precipitation

Indexed keywords

CRYOLITE; HF-HCL LEACH; MOLYBDENITE CONCENTRATE; NA 2SIF6; NA3ALF6; PRECIPITATION;

ACIDS; DISSOLUTION; FLUORINE COMPOUNDS; HALIDE MINERALS; LEACHING; SILICA; SILICATES;

SODIUM;

EID: 78049425035     PISSN: 0304386X     EISSN: None     Source Type: Journal    
DOI: 10.1016/j.hydromet.2010.05.014     Document Type: Article

References (11)

1. J.P.C. Atochem Fluorine compounds, inorganic W. Gerhartz, Fifth Edition Ullamann's Encyclopedia of Industrial Chemistry vol. A-11 1988 VCH Weinheim Germany 332 337
2. F. Habashi Principles of extractive metallurgy Hydrometallurgy vol. 2 1970 Gordon & Breach New York
3. F. Habashi, and A.T. Farouk Removal of fluorine from wet process phosphoric acid Separation Science and Technology 18 5 1983 485 491
4. E. Jackson Hydrometallurgical Extraction and Reclamation 1986 Ellis Horwood Ltd. West Sussex, UK
5. R. Kirk, and D.F. Othmer Fluorine compounds, inorganic Eva A. Parolla, Encyclopedia of Chemical Technology Vol. 9 1966 Wiley-Interscience New York 535 548
6. M. Kumar, T.R. Mankhand, D.S.R. Murthy, R. Mukhopadhyay, and P.M. Prasad Refining of a low-grade molybdenite concentrate Hydrometallurgy 86 1-2 2007 56 62
7. T.R. Mankhand, and P.M. Prasad Lime enhanced hydrogen reduction of molybdenite Metallurgical Transactions 13B 1982 275 282
8. G.M. Ritcey, and A.W. Ashbrook Solvent Extraction Part I. Principles and Applications to Process Metallurgy 1984 Elsevier New York
9. J.H. Simons The chemistry of the fluoro acids of fourth, fifth and sixth group elements Willy Lange, Fluorine Chemistry Vol. 1 1950 Academic Press Inc New York
10. H. Stephen, and T. Stephen Solubility of Inorganic and Organic Compounds 1962 Pergamon Press London
11. Walker, T. F., 1979. Process for the simultaneous production of wet process phosphoric acid and sodium silicofluoride, U. S. Patent No. 4,178,347.