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PROCESSING AND COMPLEX USAGE OF MINERAL RAW MATERIALS
ArticleName Technology of integrated use of borosilicates
DOI 10.17580/gzh.2021.08.08
ArticleAuthor Tagoev M. M., Nazarov Sh. B., Mirsaidov U. M.
ArticleAuthorData

Nikitin Institute of Chemistry, Tajik Academy of Sciences, Dushanbe, Republic of Tajikistan:

M. M. Tagoev, Post-Graduate Student
Sh. B. Nazarov, Head of Laboratory, Doctor of Chemical Sciences
U. M. Mirsaidov, Chief Researcher, Academician of the Tajik Academy of Sciences, ulmas2005@mail.ru

Abstract

The article presents the studies into sulfuric acid-induced decomposition processes in cake after sodium sulfate treatment of raw material from Ak-Arkhar deposit. The influence of different physicochemical factors on recovery of various components from the cake during sulfuric acid-induced decomposition is examined, and the process of acid treatment is optimized. The physicochemical parameters are optimized for different process stages of sodium sulfate treatment of Ak-Arkhar borosilicates, namely:
— raw material and sodium sulfate sintering: temperature 900–950 °C; duration 40 min; ore/sodium sulfate mass ratio 1:2; initial borosilicate ore size 0.16 mm and smaller;
— water treatment of cake: temperature 90–100 °C; duration 60 min; ; liquid/solid mass ratio 8:1; cake size 0.1 mm and smaller;
— sulfuric acid-induced decomposition of solid residue after water treatment of cake: sulfuric acid concentration 15–20 %; temperature 95–100 °C; duration 60 min; liquid/solid mass ratio 6:1;
— separation of marketable products using organic dissolvers: ethyl alcohol mass 0.4 t; acetone mass 0.3 t; temperature 40 °C; duration 20–30 min. H3BO3 0.185 t goes to the organic phase.
The process flow diagram is developed for treatment of Tajik Ak-Arkhar borosilicate ore by the method of sintering with sodium sulfate. Such treatment ensures integrated processing of the material, with production of marketable products such as: boric acid, aluminum and iron sulfates (coagulants); potassium and sodium sulfates (for glass production); construction materials (calcium and magnesium sulfates).

keywords Processing, borosilicates, sodium sulfate, cake, sulfuric acid, differential thermal analysis
References

1. Shumilin M. V., Aliskerov V. A., Denisov M. N., Zavertkin V. L. Business in energy-saving branches : reference book. Moscow : OOO Nedra-Biznestsentr, 2001. 268 p.
2. Kusevich V. I., Aliskerov V. A., Grigoreva M. V., Danilyants S. A., Zavertkin V. L. On high and integrated mineral processing. Mineralnye resursy Rossii. Ekonomika i upravlenie. 2013. No. 2. pp. 55–59.
3. Bykhovskiy L. Z., Voropaev V. I. The integrated study of deposits is a basis of rational mineral resources management. Mineralnye resursy Rossii. Ekonomika i upravlenie. 2004. No. 2. pp. 16–21.
4. Hayato Sato, Hiroshi Nakazawa, Yasuo Kudo. Effect of silver chloride on the bioleaching of chalcopyrite concentrate. International Journal of Mineral Processing. 2000. Vol. 59, Iss. 1. pp. 17–24.
5. Perek K. T., Arslan F. Effect of Mechanical Activation on Pressure Leaching of Küre Massive Rich Copper Ore. Mineral Processing and Extractive Metallurgy Review. 2010. Vol. 31, Iss. 4. pp. 191–200.
6. Ahmed R., Shehab S., Al-Mohannadi D. M., Linke P. Synthesis of integrated processing clusters. Chemical Engineering Science. 2020. Vol. 227. 115922. DOI: 10.1016/j.ces.2020.115922
7. Tarasova I. G. Analysis of mineral raw materials and processing products in nonferrous metallurgy. Tsvetnye Metally. 2021. No. 3. pp. 66–70.
8. Nazarov F. A., Kurbonov A. S., Barotov A. M., Nazarov Sh. B., Misratov Zh. A., Mirsaidov U. M. Processing of borosilicate ore by sintering method. Doklady Akademii nauk Respubliki Tadzhikistan. 2017. Vol. 60, No. 7-8. pp. 329–332.
9. Dzhuraev Dzh. Kh., Kurbonov A. S., Nematov A. M., Tagoev M. M., Mirsaidov U. M. Processing of borosilicate ore by orthophosphoric acid. Doklady Akademii nauk Respubliki Tadzhikistan. 2019. Vol. 62, No. 11-12. pp. 688–691.
10. Mirsaidov U. M. Organizational activities and research in the sphere of of radiation safety in the Republic of Tajikistan. Gornyi Zhurnal. 2016. Special issue No. 1. pp. 69–71.
11. Landsberg A. Aluminium From Domestic Clay Via a Chloride Process: The State-of-the-Art : Bureau of Mines Information Circular. Avondale : United States Department of the Interior, 1983. 32 p.
12. Sazhin V. S. New hydrochemical methods of complex processing of aluminosilicates and high-silicon bauxites. Moscow : Metallurgiya, 1988. 215 p.
13. Christ C. L., Clark J. R. A Crystal-Chemical Classification of Borate Structures with Emphasis on Hydrated Borates. Physics and Chemistry of Minerals. 1977. Vol. 2, Iss. 1-2. pp. 59–87.
14. Peleka E. N., Matis K. A. Hydrodynamic aspects of flotation separation. Open Chemistry. 2016. Vol. 14, Iss. 14. pp. 132–139.
15. Kemp P. H. The Chemistry of Borates : A Review. London : Borax Consolidated, 1956. Vol. 1. 90 p.
16. Tkachev K. V., Plyshevskiy Yu. S. Technology of inorganic compounds of boron. Leningrad : Khimiya, 1983. 208 p.
17. Kurbonov A. S., Barotov A. M., Nazarov F. A., Mirsaidov U. M. Decomposition of concentrate of borosilicate ore by sintering with calcium chloride. Doklady Akademii nauk Respubliki Tadzhikistan. 2016. Vol. 59, No. 1-2. pp. 53–56.
18. Mamatov E. D., Tagoev M. M., Mirsaidov U. M. Coking of borosilicate ore of Ak-Arkhar deposit with sodium nitrate. Doklady Akademii nauk Respubliki Tadzhikistan. 2015. Vol. 58, No. 3. pp. 232–234.
19. Mirsaidov U. M., Kurbonov A. S., Mamatov E. D. Decomposition of borosilicate ores by sulfuric acid. Dushanbe : Donish, 2015. 96 p.

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