Authors: M.V. Pervoikin, E.V. Zelinskaya

Title of the article: Extraction of metals from highly concentrated wastewater from the kovykta deposit

Year: 2022, Issue: 4, Pages: 59-66

Branch of knowledge: 2.8.9. Mineral processing

Index UDK: 622.75

DOI: 10.26730/1999-4125-2022-4-59-66

Abstract: In conditions of limited natural resources, underground highly mineralized waters (brines) saturated with various macro- and microelements represent a potential hydromineral raw material. Currently, there are impressive reserves of brines in the bowels of the earth, which are a major source of a number of metals and other valuable components, such as lithium, bromine, iodine and others, which necessitates the development of technologies for their processing. The object of the study was the brines of the Kovykta gas-oil-bearing area. The subject of the study is the process of metals extraction from ultra–strong brines. The purpose of the study is to determine the feasibility of metals extraction from ultra–strong brines. The chemical composition of brines is analyzed. The properties of the main components of brines are analyzed. Due to the high content of lithium, strontium, calcium and other components, highly concentrated brines are considered as raw lithium, strontium and calcium-containing material. The problems of selective extraction of alkaline and alkaline earth metals from the studied brines are considered. The factors influencing the process of ion exchange extraction of alkaline and alkaline earth metals from brines are identified. Studies of the physico-chemical properties of brines have been carried out and optimal ion exchange conditions have been selected. The existing methods of enrichment of highly concentrated brines are analyzed. Two basic schemes of extraction of useful components are considered, for each of which a sorption material is selected based on the studied parameters of the material and its quantity. The volume of extracted metals from brines is calculated with the help of two extraction schemes using cationites. An analysis of the economic feasibility of extracting lithium, strontium and calcium from highly concentrated brines has been carried out.

Key words: highly concentrated brines characteristics of brines selective extraction of metals liquid waste

Receiving date: 17.08.2022

Approval date: 30.08.2022

Publication date: 06.10.2022

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