Adaptability of slot bin to in-situ ore pre-concentration flow chart

The relevance of this study is governed by degradation of mineral resources and reserves in Norilsk mines. This leads to deterioration of quality of the ore products, which calls for the problem solution for the future. A promising method is to improve stability of produced ore material constitution by adding the process flow chart of the mine with special engineering facilities capable to reduce the product quality variability. The idea is that an underground mine is assumed as a geotechnical system able to convert ore of low and unstable grade into higher quality products with stable composition. The article describes advantages and disadvantages of modern geotechnical facilities meant for ore quality stabilization during mining. A slot bin is considered as a main mine mixer of ore pre-concentrate when a sorting-and-handling system is modified into a sorting-and-mixing system in the process of X-ray radiometric separation. Because of potential granulometric segregation of ore, the bin height is decreased, and two most efficient modes of the bin functioning are discussed. An underground mine has a huge potential to improve the product quality. An in-situ process flow chart can effectively generate and stabilize ore product quality at increased concentration of metals. For instance, reduction in standard deviation of reference component content reduces variability of contents of useful components in ore flow and improves recovery of metals in concentrate, which finally increases the concentrate yield. Addition of the in-situ ore pre-concentration flow chart with a slot bin can improve stability of the copper–nickel ore composition at the mine outlet and, consequently, can enhance processing efficiency by 2 times and more.

Turtygina N. A. Adaptability of slot bin to in-situ ore pre-concentration flow chart. MIAB.MiningInf.Anal.Bull.2021;(8):82-92.[InRuss].DOI:10.25018/0236_1493_2021_8_0_82.

N.A. Turtygina, Cand. Sci. (Eng.), Assistant Professor, Norilsk State Industrial Institute, 663310, Norilsk, Russia, e-mail: natyrtigina@mail.ru.

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