Dry impact milling of Maly Taryn gold ore

This paper describes the experimental research data on the efficiency of a centrifugal dry impact mill in grinding of different size middlings (crushing, separation, screening) produced in various circuit processing of ore samples from the Maly Taryn deposit. The experiments were aimed to assess usability of the centrifugal dry impact mill in new process circuits together with air separator mill POS-2000. The efficiency of centrifugal dry impact mill TSMVU-800 is estimated based on the amount of ground particles smaller than 0.071 mm as this particle size is sufficient for further processing, for instance, in flotation machines. The experiments prove applicability of dry impact milling of Maly Taryn ore having fraction sizes of: -5+3 mm; -3+1 mm; -3+0 mm. The mill products larger than 1 mm (mostly fraction size -3+1 mm) was sent for re-grinding as the effective maximum size of feed for air separator mill POS-2000 was 1 mm. The number of milling cycles was governed by the residue amount of size larger than 1 mm. The experimental research has proved that centrifugal dry impact mill TSMVU-800 employed in milling Maly Taryn ore samples ensures effective fineness number for stable operation of air separator mill POS-2000.

Vinokurov V. R. Dry impact milling of Maly Taryn gold ore. MIAB. Mining Inf. Anal. Bull. 2021;(12–1):48—58. [In Russ]. DOI: 10.25018/0236_1493_2021_121_0_48.

Vinokurov V. R., junior researcher of the Laboratory “Enrichment of Minerals”, vaviro@ mail.ru, Chersky Mining Institute of the North, Siberian Branch, RAS, Republic of Sakha (Yakutia) Yakutsk, Lenin ave. 43, Russia.

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