The paper presents the results of processing low-grade phosphorites by microorganisms of activated sludge from the biochemical purification production unit of JSC “Navoiazot”. The obtained results on the leaching of rare and rare-earth elements into the liquid phase make it possible to separate them and thus enrich the phosphorites. Other options are the gravitational separation of the crushed calcite particles. In addition to this, there is a real possibility of creating complex organomineral fertilisers.
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 Sultanov B.E. Tursunova Z.M. Namazov S.S. Erkaev A.U. Beglov B.M. (2002): Influence of the concentration of a solution of calcium nitrate on the degree of washing of a concentrate of phosphorites of the Central Kyzylkum. Uzbek chemical journal 4 pp. 10-13.
 Shilaev V.P. Fundamentals of mineral processing. (1986): Moscow: Nedra pp. 247-255.
 Nabiulina Y.N. Wasserman B.I. Panova N.S. (1977): Reduction of material entrainment during firing” Tr. GIGHS pp. 92-95.
 Cheryatu Y.S. (1988): Reagents for the flotation of magnesium-containing phosphorite ores. Dep. In ONIITEHIM LGI p. 6 1988 17.10.83.
 Malinskaya I.S. (1968): Searching for anion collectors for flotation of phosphorites and studying the features of their action” thesis for Cand. tech. Sci. Moscow 1968; pp. 85-103.
 Chepelevetskiy M.L. Rubinov S.S. (1987): Kinetics of the decomposition of minerals of the phosphate complex by acids”. Tr. NIUIF 137 pp. 10-73.
 Tolstov E.A. Sytenkov V.N. Kizimov F.P. et al. (2002): Technological instruction for calcination of phosphorite ore from the roasting department. - Navoiy NMMC 2002 pp. 8-26.
 Wolfkovich S.I. (1971): Enrichment of phosphorites of Karatau with sulfuric acid. Journal applied chemistry 5 pp. 969-971.
 Orlov E.A. Treushenko N.N. Kopylev B.A. Belchenko G.V. Pchelintsev V.N. et al. (1976): On the effect of temperature and composition of the gas and liquid phases on the process of enrichment of Karatau phosphorites with sulfur dioxide. Proceeding of Leningrad Technological Institute Named Lensovet Leningrad City Council Issue 5 pp. 137-143.
 Treuschenko N.N. Kopylev B.A. Belchenko G.V. Tkacheva V.A. (1976): Interaction of an aqueous suspension of carbonized phosphorite with nitrogen oxides. Proceeding of Leningrad Technological Institute Named Lensovet Leningrad City Council Issue 5 pp. 142-145.
 Hill R.O. (1976): Treatment of materials containing phosphates: The patent of France G 01 in 25/01.-No. 2280584.-Pub. 27.02.76.
 Pozhin M.E. Zhiltsova D.F. Nikondrov I.S. (1970): Method for purification of natural phosphorus-containing raw materials from impurities of magnesium compounds. The patent of the USSR Cl. From 05 to 9/00.-No. 283243.- Published on 18.12.70.
 Wengeler W. Volstein F. Hoffmann E. (1977): Preparation of phosphate ores (for processing). The patent of Germany Cl. C 01 to 25/22.-No. 2531519.-Published on -20.01.77.
 Petersen A.W. (1973): Process of processing phosphate ore. US Patent. Cl. 423-320 С 01 в 25/16.-No. 3717702.-pub.20.02.73.
 Kamino Y. et al. (1982): Preparation of EFC. The patent of Japan. MKI 01 to 25/222.-No. 55-174861.- pub. 23.06.82.
 Sardisco J.B. Holcomb D.E. et al. (1983): Enrichment of phosphate ponds. US Patent. 4393000 MKI S 01 F 1/00.-No. 338998.-publ.12.07.83.
 Rinberg G.R. et al. (1980): Method for the enrichment of natural phosphates. The patent of the USSR From 05 In 11/04 to 735583. - publ. 25.05.80.
 Fedyaeva O.A. Reshetnikova E.V. Chachina S.B. (2012): Investigations of the chemical composition of spent activated sludge of JSC Omsk Vodokanal. Proceedings of OmSTU. Department of Physical Chemistry Russia Omsk p. 8.
 Netrouzov A.I. Bonchosmolovskaya E.A. Gorlenko V.M. (2004): Ecology of microorganisms. Textbook for students High schools Moscow: Academy pp. 2004-272.
 Tepexova V.F. Burov I.V. (1982): Physico-chemical properties and application of rare-earth metals. GOSINTY.
 Mintern P.A. (1984): New research of rare earth metals. Collection of translations. Ed. EM Savitsky 2 212-220. “Mir” Publishing House.
 Smirnov A.I. (1972): Material composition and conditions for the formation of basic types of phosphorites. - Moscow Nedra p. 196.
 Skalny A.V. (2004): Chemical elements in human physiology and ecology. Moscow. ONYX-21 century Mir p. 218.
 Olikulov F.A. Khamidov O.Z. Tagayev I.A. (2016): Development of a method for obtaining bioorganic fertilizers from domestic and industrial wastewater. Academy of Sciences of Uzbekistan. Institute of General and Inorganic Chemistry. Republican Scientific Conference of Young Scientists. Proceedings of the conference High-tech development in production. Tashkent 2016 pp. 54-55.