Optimization of processing flow charts for double refractory sulfide gold ore

Sustainable development objectives of a mining company are specified. These objectives include a package of actions aimed to reduce manmade waste, to increase recoverability of useful components and to extract ore previously assumed to be low grade. The necessity and reasons for mining ore having complex material constitution are substantiated and demonstrated. Such ore types include sulfide gold ore the composition of which includes an active disseminated carbon matter having sorption capacity—the so-called double refractory ore. The shortages of the double refractory sulfide gold ore processing are identified. The task is to reduce the impact of the organic carbon in order to enhance processing efficiency of complex material constitution ore. The organic carbon complicates metallurgical conversion of double refractory sulfide gold ore. Introduction of a high-performance processing technology can essentially reduce the process cost and improve the metallurgical conversion quality. The specific character of the carbon-bearing sulfide gold ore processing is determined to ensure high efficiency of treatment of such raw material. An innovative technology of the carbon matter reduction in sulfide gold ore is proposed. It is recommended to remove fine insoluble precipitate and to carry out subsequent carbon flotation in flotation columns. The loss of gold in removal of organic carbon is determined for different-type flotation machines and for different fineness of grind.

Kyaw Z. Y., Htet Z. O., Phyoe K. K., Wai Z. K. Optimization of processing flow charts for double refractory sulfide gold ore. MIAB. Mining Inf. Anal. Bull. 2022;(9):143-155. [In Russ]. DOI: 10.25018/0236_1493_2022_9_0_143.

Kyaw Zay Ya¹, Cand. Sci. (Eng.), Doctoral Candidate, e-mail: kokyawgyi49@gmail.com, ORCID ID: 0000-0003-4364-9574,
Htet Zaw Oo¹, Graduate Student, e-mail: htetzawoo68099@gmail.com, ORCID ID: 0000-0003-2040-2552
Phyoe Kyaw Kyaw¹, Graduate Student, e-mail: bophyo18319y93@gmail.com, ORCID ID: 0000-0003-3084-6771,
Wai Zin Kyaw¹, Graduate Student, e-mail: waizinkyaw.yo@gmail.com, ORCID ID: 0000-0003-1418-9644,
¹ National University of Science and Technology «MISiS», 119049, Moscow, Russia.

Kyaw Zay Ya, e-mail: kokyawgyi49@gmail.com.

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