Wasteless mineral processing technology to expand functional capabilities of eco mining concept

One of the major trends in the eco mining concept is the improved waste management. Large mining companies are obliged to obtain ecological permits to work by 1 January 2025, and development of a mining waste processing technology toward rational natural wealth management is a relevant scientific problem therefore. The subject of the research is the manmade material (borogypsum) after production of boric acid from datolite, containing gypsum, anhydrite and silicon (Dalnegorsky GOK, Primorye). The research aims to develop a boric acid production waste processing technology to ensure multipurpose utilization of the mineral raw material. The grain-size, element, chemistry and mineralogy analyses of the waste are presented, and the material constitution of the waste is examined using modern tools, which allows drawing a conclusion on feasibility of extraction of gypsum, anhydrite and silicon as end products for manufacture of binders and for the construction industry. The developed borogypsum processing flowchart includes a reverse flotation circuit with a new collecting agent (sodium oleoyl sarcosinate, C17H33CON(СН3)CH2COONa). The effective operating conditions are determined for processing without generation of manmade waste and with production of two final products (gypsum and silicon). Extraction of silicon grows by 30.46%. The comparative analysis of the novel engineering solution with the scenario proposed by Dalnegorsky GOK proves that the multipurpose utilization factor of the mineral raw material has increased by 1.52 times, from 46.25% to 70.36%.

Khatkova A. N., Shumilova L. V., Pateiuk S. A. Wasteless mineral processing technology to expand functional capabilities of eco mining concept. MIAB. Mining Inf. Anal. Bull. 2022;(10):51-61. [In Russ]. DOI: 10.25018/0236_1493_2022_10_0_51.

The study was supported by the Russian Science Foundation in the framework of the basic and exploratory research grant for 2022–2023, Agreement No. 22-17-00040.

A.N. Khatkova¹, Dr. Sci. (Eng.), Professor, Vice-Rector for Scientific and Innovation Work, e-mail: alisa1965.65@mail.ru, ORCID ID: 0000-0001-6527-0026,
L.V. Shumilova¹, Dr. Sci. (Eng.), Assistant Professor, Professor, e-mail: shumilovalv@mail.ru, ORCID ID: 0000-0001-5991-9204,
S.A. Pateyuk¹, Chemist-Expert, e-mail: nesvvik@gmail.com, ORCID ID: 0000-0002-4893-5601,
¹ Transbaikal State University, 672039, Chita, Russia.

L.V. Shumilova, e-mail: shumilovalv@mail.ru.

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