Production magnesium sulfate from man-made waste from the processing of chrysotile raw materials from the Zhitikara deposit

In this article, based on the conducted technological research and the analysis of the material balance of the processes for obtaining magnesium sulfate (MgSO4) from serpentinite of the Zhitikara deposit, a new principal technological scheme has been proposed. The technological scheme includes a number of stages of sulfuric acid leaching and subsequent purification of the sulfate solution using thermally activated serpentinite treated at a temperature of 750 °C. The research results have shown that the proposed scheme can significantly improve the efficiency of sulfuric acid utilization (H2SO4), reaching a magnesium sulfuric acid yield close to 100%. In this process, sulfuric acid is the only consumable reagent in the developed technology. The magnesium sulfate obtained by the new technology is characterized by a high degree of purity, and the product yield, relative to the magnesium content in the original serpentinite, reaches up to 56%. The experimentally obtained data open up new prospects for the industrial use of serpentinite as a promising source of magnesium for the production of magnesium-containing compounds. The introduction of this new technology can contribute to the more rational use of mineral resources and technogenic wastes, as well as to the reduction of environmental impact through their processing into secondary raw materials.

Eskibayeva Ch. Z., Auyeshov A. P., Ibrayeva A. M., Kolesnikov A. S., Dzholdasova E. M. Production magnesium sulfate from man-made waste from the processing of chrysotile raw materials from the Zhitikara deposit. MIAB. Mining Inf. Anal. Bull. 2025;(12-1): 78-89. DOI: 10.25018/0236_1493_2025_121_0_78.

This study was conducted with the financial support of grant funding for scientific and (and/or) scientific-technical projects and programs for 2023–2025 by the Committee of Science of the Ministry of Education and Higher Education of the Republic of Kazakhstan (Grant No. AP19676952).

A.P. Auyeshov¹, Dr. Sci. (Eng.), Professor, e-mail: centersapa@mail.ru, ORCID ID: 0000-0002-3504-9117,
Ch.Z. Eskibayeva¹, Cand. Sci. (Eng.), Assistant Professor, e-mail: yeskibayeva@internet.ru, ORCID ID: 0000-0002-8049-8851,
A.M. Ibraeva¹, Master of Chemical Sciences, Researcher, e-mail: aytkul.ibraeva@mail.ru, ORCID ID: 0000-0003-0981-0117,
A.S. Kolesnikov¹, Cand. Sci. (Eng.), Professor, e-mail: kas164@yandex.kz, ORCID ID: 0000-0002-8060-6234,
E.M. Dzholdasova¹, Master of Chemical Sciences, Researcher, e-mail: djoldasova_elmira@mail.ru, ORCID ID: 0000-0001-5563-8990,
¹ M. Auezov South Kazakhstan University, 160012, Shymkent, Kazakhstan.

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

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