Physico-chemical studies of nemalite-containing chrysotile asbestos from the Zhitikarinsky deposit

This article presents physico-chemical studies of nemalite-containing chrysotile asbestos (NCA), an associated mineral from the extraction of chrysotile asbestos ore from the Zhitikarinsky deposit, which is not used and stored in special dumps, in fact representing a man-made waste that poses an environmental hazard to the environment and the health of the region's population. During the research, samples of nemalite-containing chrysotile asbestos were subjected to chemical and diffractometric analyses in order to determine the chemicalelemental and mineralogical compositions of the selected samples. The composition of both natural nemalite-containing chrysotile asbestos and modified as a result of heat treatment in the temperature range 450–850 ºC has been studied in order to determine the possibility of its use as a secondary raw material for the production of magnesium compounds. According to the results of the conducted studies, it was found that about 60% Mg in the composition of nemalitecontaining chrysotile asbestos is in the form of a mineral – brucite and 40% Mg is in the form of a component containing serpentine. The experiments carried out and the results of X-ray studies confirm that heat treatment contributes to the qualitative improvement of the physicochemical and technological properties of nemalite-containing chrysotile asbestos when using it as a secondary raw material for the production of magnesium compounds.

Abdrazakh Auyeshov, Chaizada Eskibayeva, Kazhmukhan Arynov, Olga Kolesnikova, Kurmanbek Alzhanov Physico-chemical studies of nemalite-containing chrysotile asbestos from the Zhitikarinsky deposit. MIAB. Mining Inf. Anal. Bull. 2024;(10):51-61. DOI: 10.25018/0236_1493_2024_10_0_51.

The article was prepared with the financial support of grant financing of scientific and (or) scientific and technical projects and programs for 2023–2025 by the Science Committee of the Ministry of Science and Higher Education of the Republic of Kazakhstan (Grant No AP19676952).

Abdrazakh Auyeshov¹, Dr. Sci. (Eng.), Professor, e-mail: centersapa@mail.ru, ORCID ID: 0000-0002-3504-9117,
Chaizada Eskibayeva¹, Cand. Sci. (Eng.), Associate Professor, e-mail: yeskibayeva@internet.ru, ORCID ID: 0000-0002-8049-8851,
Kazhmukhan Arynov, Dr. Sci. (Eng.), Professor, Aspan Tau LTD Limited Liability Company, 160024, Almaty, Kazakhstan, e-mail: tau_aspan@mail.ru, ORCID ID: 0000-0002-1440-8248,
Olga Kolesnikova¹, Master of Technical Sciences, Research Associate, e-mail: ogkolesnikova@yandex.kz, ORCID ID: 0000-0001-6871-8367, 
Kurmanbek Alzhanov¹, Main Expert, ORCID ID: 0000-0002-5221-8285, 160012, Shymkent, Tauke khan str., 5,
¹ M. Auezov South Kazakhstan University, 160012, Shymkent, Kazakhstan.

Abdrazakh Auyeshov, e-mail: centersapa@mail.ru.

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