Journals →  Obogashchenie Rud →  2022 →  #3 →  Back

ArticleName Material composition and processing technology for quartz-kaolin rocks of the Khodzhakul deposit
DOI 10.17580/or.2022.03.03
ArticleAuthor Yunusov M. Yu., Babaev Z. K., Matchanov Sh. K., Matchonov Sh. Sh.

Tashkent Chemical-Technological Institute (Tashkent, Uzbekistan):

Yunusov M. Yu., Professor, Doctor of Engineering Sciences


Urgench State University (Urgench, Uzbekistan):
Babaev Z. K., Professor, Doctor of Engineering Sciences
Matchanov Sh. K., Associate Professor, Candidate of Engineering Sciences,
Matchonov Sh. Sh., Student


This paper describes the material composition and processing technology for quartz sand isolated from the quartz-kaolin rock of the Khodzhakul deposit group located in the Republic of Uzbekistan. The chemical, mineral, and grain-size compositions have been studied for the quartz-kaolin rocks and a processing technology has been developed for the resulting sand. Material composition of the sand was established by X-ray phase analysis after calcination at 900–1350 °C, as well as using chemical and IR spectroscopic analysis methods. The effect of dilution of the kaolin suspension isolated by decantation has been studied. According to the research results, the best processing values are observed when using Uniflok flocculant and sodium phosphate solution as the dispersant at a ratio of 1.0 : 1.0. An 8-EVSV-16/100 electromagnetic separator was used to study the additional processing of quartz sand in an electromagnetic field. Electromagnetic treatment of the quartz product allows removing up to 78.6 % of iron impurities. Based on the results obtained, a process flow was proposed for the extraction and separation of quartz sand from the original rocks and its additional processing. This process includes hydraulic extraction of the raw materials, primary classification in hydrocyclones, quartz flocculation and washing of kaolin slimes, drying of the quartz product, and dry electromagnetic separation using a roller separator. The process includes process water circulation. The quartz sand obtained using this technology contains 97.8 wt% of SiO2, less than 0.05 wt% of Fe2O3, and 1.20 wt% of Al2O3. The quartz product with the specified composition may be used for the manufacture of colorless transparent glass.

keywords Quartz-kaolin rock, flocculation, kaolin slime, decantation, flotation, electromagnetic separation, quartz sand

1. Pushcharovsky D. Yu. Structural mineralogy of silicates and their synthetic analogues. Moscow: Nedra, 1986. 160 p.
2. Vaisberg L. A., Kononov O. V., Ustinov I. D. Fundamentals of geometallurgy. St. Petersburg: Russkaya Kollektsiya, 2020. 376 p.
3. Rafienko V. A., Malyuk O. P. Beneficiation of quartz sands. 2nd ed. Moscow: Gornaya Kniga, 2014. 55 p.
4. Yunusov M. Yu., Babaev Z. K., Mingulova F. A. Khodzhikul quartz sand as a new raw material. Steklo i Keramika. 2002. No. 8. pp. 26–27.
5. Arsentiev V. A., Gerasimov A. M., Ustinov I. D. Resource-saving in processing of phyllosilicate minerals. Gornyi Zhurnal. 2018. No. 12. pp. 52–58. DOI: 10.17580/gzh.2018.12.11.
6. Gerasimov A. M. Effects of thermal modification on the separation of clay-containing waste slurries. Obogashchenie Rud. 2022. No. 2. pp. 53–56. DOI: 10.17580/or.2022.02.09.
7. Gerasimov A. M., Eremina O. V. Application microwave radiation for directional changes of layered silicates properties. Eurasian Mining. 2021. No. 1. pp. 55–60. DOI: 10.17580/em.2021.01.11.
8. Ehsanti S. M., Unesi M., Tamartash R. Clay sedimentation and consolidation behavior in tailing storage over mine lifetime. Journal of Mining and Environment. 2019. Vol. 10, Iss. 1. pp. 113–124.
9. Li Y., Xia W., Wen B., Xia G. Filtration and dewatering of the mixture of quarts and kaolinate in different proportions. Journal of Colloid and Interface Science. 2019. Vol. 555. pp. 731–739.
10. Ma X., Fan Y., Dong X., Chen R., Li H., Sun D., Yao S. Impact of clay minerals on the dewatering of coal slurry. Minerals. 2018. Vol. 8, Iss. 9. DOI: 10.3390/min8090400.
11. Yushina T. I., Nguyen Van Trong, Dumov A. M., Nguyen Thu Thuy. A study on the possibility of processing quartz-sericite ore of the Ha Tinh deposit in Vietnam. Obogashchenie Rud. 2022. No. 1. pp. 8–13. DOI: 10.17580/or.2022.01.02.
12. Dondi M., Bertolotti G. P. Basic guidelines for prospecting and technological of clays for the ceramic industry.
Part 1. International Ceramic Review. 2021. Vol. 70. pp. 36–46.
13. Bauman A. V., Stepanenko A. I., Baranova A. A. Water consumption calculation methodology in the design of clay mineral washing systems. Obogashchenie Rud. 2022. No. 2. pp. 3–8. DOI: 10.17580/or.2022.02.01.

Language of full-text russian
Full content Buy