Authors: Kh.I. Kholov, Sh.R. Samikhov, Sh.A. Kurbanov

Title of the article: Features of the geology and beneficiation technology of gold-antimony-mercury ores of the Djizhikrut deposit

Year: 2025, Issue: 2, Pages: 175-187

Branch of knowledge: 2.8.9. Mineral processing

Index UDK: 55.033.71 (621.385)

DOI: 10.26730/1999-4125-2025-2-175-187

Abstract: The Dzhizhikrut deposit, located in the Zeravshan-Gissar antimony-mercury belt, is a unique jasperoid deposit characterized by distinctly expressed stockwork-like ore bodies and a complex multilayered structure that includes dolomite breccias. Studies on the beneficiation of ores from the lower horizons have demonstrated the possibility of effectively extracting antimony and mercury using flotation methods. As a result, an antimony concentrate of grade KSuF-3 was obtained, containing 46.5% antimony with a recovery rate of 89.9%. However, a significant portion of gold remains in the flotation tails, indicating the need to develop additional technological processes for its extraction. In this work, a flotation technological scheme adapted to the conditions of the Anzob processing plant (Tajik-American LLC JV «Anzob») is proposed. The scheme includes fine grinding of the ore to 75% passing -0.063 mm, primary flotation, two control flotations, and multistage cleaning of the concentrate. This approach ensures optimal use of mineral raw materials and maximum recovery of antimony and mercury, as well as associated valuable elements such as thallium, selenium, and tellurium. Special attention is given to the geological and mineralogical features of the deposit, which influence the choice of processing methods. The unique composition of the ores, characterized by a high content of finely disseminated gold and a complex association of antimony and mercury minerals, requires specialized beneficiation technologies. Despite the successful extraction of antimony and mercury, the gold remaining in the tails represents a potential reserve for increasing the economic efficiency of developing the deposit. Thus, the conducted studies confirm the prospect of using the flotation method for the beneficiation of gold-antimony-mercury ores at the Dzhizhikrut deposit and underscore the necessity for further research on gold extraction from flotation tails.

Key words: Djizhikrut deposit jasperoid type antimony mercury flotation stibnite mineralization technological scheme gold-bearing ores ore-bearing blocks ore processing associated elements

Receiving date: 04.12.2024

Approval date: 22.04.2025

Publication date: 11.06.2025

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