A Comparative Study on the Thermal Decomposition of Ammonium p-Tungstate in Batch and Fluidized-Bed Reactors

Industrial and Engineering Chemistry Research

Volumn 36, Issue 9, 1997, Pages 3602-3606

  Tripathy, P K ^a   Chakraborty, S P ^a   Sharma, I G ^a   Bose, D K ^a  

^a BHABHA ATOMIC RESEARCH CENTRE   (India)

Author keywords

[No Author keywords available]

Indexed keywords

ACTIVATION ENERGY; AMMONIUM COMPOUNDS; FLUIDIZED BEDS; MATHEMATICAL MODELS; MORPHOLOGY; REACTION KINETICS; TUNGSTEN COMPOUNDS;

AMMONIUM TUNGSTATE; BATCH REACTORS; POWER LAW MODEL; TUNGSTEN TRIOXIDE;

PYROLYSIS;

DEGRADATION; FLUIDIZED BED;

EID: 0031231154     PISSN: 08885885     EISSN: None     Source Type: Journal    
DOI: 10.1021/ie960667n     Document Type: Article

References (12)

1. Basu, A. K.; Sale, F. R. Characterization of various commercial forms of ammonium para tungstate powder. J. Mater. Sci. 1975, 70, 571.
2. Basu, A. K.; Sale, F. R. The thermal decomposition of ammonium para tungstate. J. Mater. Sci. 1977, 12, 1115.
3. Blazek, A. Thermal Analysis; Van Nostrand Reinhold: London, U.K., 1973.
4. Davidson, J. S.; Harison, D. Fluidized Particles; Cambridge: 1963.
5. Fillipov, S. The Theory of Metallurgical Processes, Translated from Russian by Kittel, G.; Mir Publishers: Moscow, 1975.
6. French, G. J.; Sale, F. R. A re-investigation of the thermal decomposition of ammonium para tungstate. J. Mater. Sci. 1981, 16, 3427.
7. Klar, E. Metals Handbook: Powder Metallurgy, 9th ed.; ASM: Metals Park, OH, 1984; Vol. 7.
8. Pfeifer, J.; Badaljian, P.; Tekula-Buxbaum, P.; Vadasdi, K. Microwave decomposition of solid crystalline ammonium para tungstate and ammonium meta tungstate. J. Solid State Chem. 1993, 105, 588.
9. Ravindran, P. V. Lumped parameter equation and thermoanalytical curves. Thermochim. Ada 1980, 39, 135.
10. Ravindran, P. V.; Sundaram, A. K. Thermal Analysis Manual; Indian Chemical Society: Mumbai, India, 1974.
11. Suri, A. K.; Subramanian, C.; Gupta, C. K. Research and Development on Tungsten Extraction from Indian Sources. Paper presented at the International Conference on Advances in Chemical Metallurgy, B.A.R.C., Mumbai, India, Jan 9-11, 1991, p 561.
12. Yih, S. W. H.; Wang, C. T. Tungsten: Sources, Metallurgy, Properties and Applications; Plenum: New York, 1979.