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PHOSPHORUS-SULFUR AND NITROGEN-PHOSPHORUS-SULFUR COMPLEXES BY ACTIVATING PHOSPHORITES WITH SULFURIC AND NITRIC ACIDS IN THE PRESENCE OF SULFUR

Authors

Urozov T.S., Aslanov A.Q., Kuldoshev O.E.

Rubric:Chemistry
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Annotation

It was studied that it is possible to obtain complex phosphorus-sulfur and nitrogen-phosphorus-sulfur fertilizers with insecticidal properties necessary for agriculture by reprocessing low-grade Kyzylkum phosphorites in the presence of sulfur with incomplete standards of sulfuric and nitric acid. 30-40% of acid consumption is saved by replacing the amount of sulfur in the sulfuric acid used in the decomposition process with elemental sulfur. The received fertilizers contain phosphate minerals in mono- and dicalcium phosphate form, and sulfur in SO42- ion and elemental form. It was found that the sulfur in the fertilizer is in a completely hydrophilic form.

Keywords

low-grade phosphorite
nitrogen-phosphorus-sulfur fertilizer
insecticide
technological scheme.

Authors

Urozov T.S., Aslanov A.Q., Kuldoshev O.E.

References:

  1. Kuldoshev O.E., Urozov T.S., Tillayev S.U., Aslanov A. K. Production of comolex fertilizers from central kyzylkum phosphorites according to phosphorus-sulfur-survey and nitrogen-phosphorus-sulfur insecticide// Egypt. J. Chem. Vol. 65, No. 7, pp. 73 – 84 (2022).
  2. M.M. Sobirov, Z.I.Makhsudova, T.S.Urozov. Liquid and suspended sulfur compound fertilizers. Scientific bulletin.  No. 5, 68-72 p. Samarkand, 2016
  3. Reimov A.M. Development of technology for obtaining nitrocalcium phosphate and nitrocalcium sulfophosphate fertilizers based on the decomposition of Kyzylkum phosphorites at a reduced rate of nitric acid: Abstract of the thesis. dis. ... cand. tech. Sciences. -T.:, 2004. p 23.
  4. Seitnazarov A.R. Chemical and mechanochemical activation of phosphorites of the Central Kyzylkum: Abstract of the thesis. dis. ... cand. tech. Sciences. - Tashkent, -2005.  p 23.
  5. Mirzakulov Kh.Ch. Development of a resource-saving technology for processing phosphorites of the Central Kyzylkum: Abstract of the thesis. diss. … doc. tech. Sciences. - Tashkent, 2009.  p. 52 .
  6. Teryukhova R.R. Influence of phosphorus bacterial fertilizers on the biological activity of a typical gray soil under cotton: Abstract of the thesis. dis. ... cand. biol. Sciences. - Tashkent, 2005.  p. 27.
  7. Dalimova D.A. Microbiological activity of a typical serozem under the influence of organomineral composts based on phosphorites of the Central Kyzylkum: Abstract of the thesis. dis. ... biol. Sciences. - Tashkent, 2007. p. 25.
  8. Urozov T.S., Tadjiev S.M., Tukhtaev S. Decomposition of Kyzylkum phosphorites in the presence of sulfuric acid suspension // Uzb. Chem. jor. - Tashkent, 2010. - No. 5. pp. 30-33.
  9. Urozov T.S., Tadjiev S.M., Tukhtaev S. Khairullaev Ch.K. The effect of sulfur on the decomposition of Kyzylkum phosphorites with nitric acid// Lectures of the Academy of Sciences of the Republic of Uzbekistan. - Tashkent, 2010. - No 4. pp. 53-56.
  10. Urozov T.S., Tadjiev S.M., Tukhtaev S. Obtaining fertilizers with insecticidal properties containing N, P, S // Collection of lectures of the international scientific and practical conference on the topic "Resource and water-saving technologies of growing abundant crops in the farming system": Tashkent, 2010. pp. 256-257.

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