Abstract
Thermodynamic calculations and experimental studies have demonstrated that dissociation of natural phosphates in a low-temperature plasma involves partial calcium oxide evaporation. As a result, upon cooling gaseous products of the dissociated phosphate raw material, compounds containing condensed calcium phosphate are formed. The composition and properties of condensed calcium phosphates, which can be used as fertilizers, are discussed.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
W. M. Goldberger, J. E. Hanway, Jr., and B. G. Langston, “The Electrothermal Fluidized Bed,”Chem. Eng. Prog. 61, 31–35 (1965).
J. D. Chase, J. F. Skrivan, D. Human, and J. E. Longfield, “Plasma Jet Process for Making Elemental Phosphorus,”Ind. Eng. Chem. Process. Des. Dev. 18, 261–266 (1979).
A. B. Becturov, P. V. Sergeev, B. K. Loksha, et al. “Hydrocarbon Reduction of Natural Phosphates in an Electric Arc Device,”Tr. Inst. Khim. Nauk Kaz. SSR Akad Nauk,38, 3–11 (1974).
S. I. Volfkovich and R. G. Aziev, “Thermal Dissociation of Calcium Phosphate in Silicon Mixtures,”Dokl. Akad. Nauk SSSR 162, 1310–1313 (1965).
I. S. Burov, V. V. Bysyuk, B. K. Zabrodin, and A. L. Mosse, “Treatment of Phosphate Ore in Thermal Air Plasma,”Rev. Int. Hautes Temp. Refract. Fr. 15, 201–207 (1978).
A. L. Mosse, I. S. Burov, L. I. Krasovskaya, and O. I. Yasko, “Theoretical and Experimental Results for Thermal Phosphate Dissociation in Plasma,” in4th International Symposium of Plasma Chemistry, August 27 to September 1, 1979, Zurich, Switzerland, pp. 249–253.
E. D. Dzyuba, V. V. Pechkovsky, M. T. Sokolov, and L. P. Valyukevich, “Phosphate Production in CaO and P2O5 Interaction,”Zh. Prikl. Khim. 60, 961–964 (1977).
A. L. Mosse, V. V. Pechkovsky, A. I. Teterevkov, I. S. Burov, Yu. N. Vilk, V. A. Ershov, A. A. Chelnokov, O. I. Yasko, V. V. Bysyuk, and E. D. Dzyuba, “Production of Hydrogen Fluoride, Phosphorus Anhydride, Calcium and Nitric Acid Polyphosphates, USA Patent No. 4,010,241.
A. L. Mosse, L. I. Krasovskaya, and I. S. Burov, “Thermodynamic Calculations of the Fundamental Characteristics of Phosphate Thermal Dissociation,”Khim. Vys. Energ. 12, 538–541 (1978).
O. I. Yasko, A. L. Mosse, V. V. Pechkovsky, I. S. Burov, and V. V. Bysyuk, “Production of Phosphorus-Containing Compounds in Plasma Chemical Reactors when Processing Fine-Dispersed Natural Phosphates,”2nd International Congress on Phosphorus Compounds, Boston, Massachusetts, April 1980, pp. 387–398.
J. R. Lehr, E. H. Brown, A. W. Frazier, J. P. Smith, and R. D. Frascher, “Crystallographic Properties of Fertilizer Compounds,”Chem. Eng. Bull. No. 6, 3–166 (1967).
V. V. Pechkovsky, M. T. Sokolov, E. D. Dzyuba, L. P. Valyukevich, and V. A. Ashuyko, “Solid and Gaseous Products Produced in Phosphorite Heating to 1800°,”Zh. Prikl. Khim. 53, 1700–1706 (1980).
A. M. Heyns, “The i.r. and Raman Spectra of Sodium Hexafluorophosphate Monohydrate, NaPF6 · H2O,”Spectrochim. Acta 33, 315–322 (1977).
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Mosse, A.L., Pechkovsky, V.V., Dzyuba, E.D. et al. Production of condensed phosphate by plasma chemical treatment of phosphate raw material. Plasma Chem Plasma Process 5, 275–282 (1985). https://doi.org/10.1007/BF00615126
Received:
Revised:
Issue Date:
DOI: https://doi.org/10.1007/BF00615126