Siberian Federal University, Krasnoyarsk, Russia:

N. K. Algebraistova, Assistant Professor of a Chair “Mineral Concentration”, e-mail: algebraistova@mail.ru
E. A. Burdakova, Assistant Professor of a Chair “Mineral Concentration”
A. S. Markova, Post-Graduate Student of a Chair “Mineral Concentration”

LLC “Sibkrasproekt”, Krasnoyarsk, Russia:

A. V. Makshanin, First Category Engineer

This research shows the findings of a recent study of gravity devices. It is based on 3 samples, containing precious metals: low-sulfidation gold bearing ore, gold and silver bearing ore and tailings after copper-nickel impregnated ore processing. There is also shown the comparison of ore dressing indices, obtained after testing centrifugal jigging machine “Kelsey” (CJM), centrifugal separator “Falcon” and centrifugal separator “Itomak”. The efficiency of centrifugal machines was estimated by research tasks. During the beneficiation of low-sulfide ore and rich gold-silver ore, the recovery of valuable components were taken for optimization criterion. We determined the extraction of metals in concentrate. During the benefication of processing plant tailings, the degree of valuable component concentration was taken for optimization criterion. The studies were carried out according to the stage schemes, mineral grain size from 1.5 mm to –0.071+0 mm. The potential of application of the centrifugal jigging machine “Kelsey” is demonstrated. A number of tasks can be set:
– pre-concentration of low-grade ores for the deposits, remote from gold processing plants;
– ore-dressing of high-grade gold and silver bearing ores;
– complete extraction of valuable constituent from man-made materials.
There were determined the factors influencing the ore dressing in the jigging machine “Kelsey”. The essential factors for concentration degree are pulsation frequency, rotor speed and “feedrate”.

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