Reactivity of mechanically activated apatite and its interaction with zeolites
Tóm tắt
The process for raising the agrochemically active citric-soluble phosphorus oxide content in apatite is reported on example of ores of the Seligdarskoe deposit by employing the mechanochemical activation with introduction of zeolites. The process for multistep extraction with citric-acid solutions is proposed to evaluate complete solubility of activated apatites utilized as fertilizers. The potentialities to prolong the agrochemical activity of apatite component in zeolite-phosphate mixtures are shown by introducing gradually additional amount of zeolite as it is saturated with calcium cations.
Tài liệu tham khảo
V. F. Krutikov, V. V. Vlasov, and V, A. Grevtsov, “Spectroscopic investigation of nature of solubility of calcium phosphate occurred in phosphorites in weak acids,” Gorn. Vestnik, Special Issue (1996).
V. I. Bragin and V. I. Bragina, Processing and Complex Utilization of Phosphate and Phosphate Rare Metal Ores in East Siberia [in Russian], Izd. Gos. Univer., Krasnoyarsk (1996).
M. V. Chaikina, “Natural phosphates: structural-chemical classification and wasteless mechanochemical method of treatment,” Khim. Inter, Ust. Razv., No. 2 (1996).
L. M. Krivoputskaya, T. N. Grigor’eva, and T. S. Yusupov, “Structural modification of apatite activated in different media,” in: Modeling and Physics-and-Chemistry of Lithogenesis [in Russian], Novosibirsk (1976).
T. S. Yusupov and L. G. Shumskaya, “Control of cation-exchange interaction between zeolites and phosphates on the basis of soft mechanochemical activation,” Fiz.-Tekh. Probl. Razrab. Polezn. Iskop., 38, No. 2 (2002).
D. W. Ming and E. R. Allen, “Zeoponic substrates for space applications: advances in the use of natural zeolites for plant growth,” in: Proceedings of the NATO Advanced Research Workshop on the Application of Natural Microporous Materials for Environmental Technology, Series E, V, Kluwer Academic Publishers, 362, Slovakia (1998).