ORALS

SESSION: MetalsWedPM2-R3	Dmitriev International Symposium (6th Intl. Symp. on Sustainable Metals & Alloys Processing)
Wed. 30 Nov. 2022 / Room: Arcadia 1
Session Chairs: Bagdaulet Kenzhaliyev; Anil K. Kar; Session Monitor: TBA

16:45: [MetalsWedPM211] OS
Research of problems of operation of mobile technological complexes of mine water treatment
Boris Zobnin¹ ; Vitaly V. Kochetkov² ; ¹Уральский государственный горный университет, Екатеринбург, Russian Federation; ²Ural State Mining University, Yekaterinburg, Russian Federation;
Paper Id: 208 [Abstract]

Completion of the development of a large number of fields in recent years has led to the need to manage the processes occurring at the post-operational stage of the operation of these fields, disrupted by long-term mining operations. One of these processes is the self-discharge of mine water. In 1998, the International Network for Acid Prevention (INAP) was established as an association of leading mining companies (Anglo American, Barrick Gold Corporation, Rio Tinto, etc.). The goal of INAP is to significantly improve the management of sulfide ore materials during and after mining, to reduce the consequences associated with acid drainage by consolidating information and experience in the field of acid drainage, sharing knowledge and research, and developing technologies. However, it has not yet been possible to solve the problem of purifying acidic mine waters from heavy metals and neutralizing them using reagent-free methods on an industrial scale. The increased interest in reagent - free treatment methods of liquid media is explained by the fact that these methods of cleaning and disinfection do not pollute the natural environment with chemicals and do not have a harmful or irritating effect on the human body. <br />The aim of the work is to develop and scientifically substantiate a set of mathematical models that allow optimizing the technological regime of acid mine water treatment (AMW) by a reagent-free method. To achieve this goal, the following tasks are set and solved:(1)substantiation of a set of models describing the operation processes of mobile technological complexes for the treatment of AMW, (2) development of a methodology for pre-project analysis of the mobile technological complex and (3) development of a mathematical model of the operation process of mine water treatment with the extraction of heavy metals from them. Theoretical and methodological basis of the study was the methods of systems theory, reliability theory, and mathematical modeling. "Event trees" were used as probabilistic models of reliability and safety of EW cleaning systems.A paradigm of minimizing environmental and economic risks caused by the closure of unprofitable copper-zinc-pyrite mines has been developed. The paradigm is formed to prevent an environmental disaster caused by the self-discharge of water from mines that are on " wet " conservation [1]. The resolution of the conflict situation is provided by the introduction of adaptive mobile technological complexes for the treatment of acidic mine waters and the extraction of heavy metals from them. It is shown that mines located on wet conservation are weakly structured objects with unstable functioning and data uncertainty [2,3]. The functioning of the technological complex is represented as a change in the state of its links: water treatment, its treatment in the reactor and separation into target products.

References:
[1] Boris B. Zobnin, Vitaly V. Kochetkov Paradigm for Minimizing Environmental and Economic Risks of Closing Copper-Zinc-Pyrite Mines//International Scientific and Practical Forum ASU SciTech Forum 2020, Barnaul, Russia\n[2] Zobnin B. B. Evolution of technogenic mineral formations as sources of economic and environmental risks//News of UGGU. Series: Mining, 2005, issue 21, pp. 138-143.\n[3] Zobnin B. B., Makov A. A., Ba Mamadou Gando. Types of uncertainties arising in the evaluation of investment projects of mine water processing / / Algorithms, methods and systems of data processing: electronic scientific journal, 2019, issue 2 (40) ]