November 25, 2022
An official ceremony marking the commissioning of a concentrate beneficiation facility

An official ceremony marking the commissioning of a concentrate beneficiation facility took place on the 17th of November 2022 at the Andrey Varichev Mikhailovsky GOK (Metalloinvest). Construction of the new beneficiation facility was fulfilled based on the process design criteria and engineering design developed by Institute TOMS.

October 07, 2022
A Certificate of Appreciation from the National Association of Surveyors and Designers

The National Association of Surveyors and Designers (NOPRIZ) has awarded the team of Institute TOMS with a Certificate of Appreciation

October 18, 2021
Accreditation to perform the Jar Mill test

In September 2021, the Metso:Outotec Jar Mill arrived and was installed in the Institute TOMS laboratory. The Institute’s comminution team was trained by M:O’s specialists and the lab was granted accreditation to perform the Jar Mill testing.

September 10, 2020
IsaMill Testing Accreditation

In September 2020, Institute TOMS was given the latest accreditation certificates by Glencore Technology (Australia) for running UFG testing in a stirred mill – IsaMill M4.

August 30, 2020
Derrick Screen Pilot-Scale Testing

In August 2020, Institute TOMS (Irkutsk) in partnership with Thrane Teknikk initiated testing of a fine screening technology using Derrick Stack Sizer 2SG 48-60R-1STK by Derrick Corporation.

Main page/Testworks/Mineral processing

Mineral processing

Gravity and magnetic separation:

  • Conventional processing methods (jigging, table concentration, spiral separation);
  • Centrifugal processing in Knelson, Falcon concentrators with batch concentrate discharge (precious metal recovery, mercury);
  • Centrifugal processing in Knelson concentrators with continuous concentrate discharge (precious metals, sulphides recovery, heavy metals concentration Cr, W, Sn, Fe etc.);
  • Dense media separation in a special plant;
  • Magnetic separators with different magnetic intensity; 
  • GRG Test, E-GRG Test, KC-CVD testing, multistage tests);
  • Modeling of gravity separation in grinding circuit.


  • Flotation in mechanical machines (Russia);
  • Flotation in Denver-Metso mechanical machines (USA)
  • Flotation in Outotec forced-air machines (Finland);
  • Flotation in Pneuflot Humboldt pneumatic machines (Germany);
  • Flotation in Imhoflot G-Cell pneumatic machines (Germany);
  • Flotation in Jameson Cell pneumatic machines (Australia);
  • Selection of optimal flotation parameters (grinding size, reagents, flotation kinetics, pulp potential, flowsheet design);
  • Cleaning operations modeling, including ultrafine grinding of crude concentrates;
  • Flotation in open and closed cycles.​​
Pilot concentrator KC-CVD (Canada)
Jig (Russia)
Metso/Denver 12 mechanical machine (USA)
Outotec machine (Finland)

Thickening and filtration:

  • Thickening testworks (conventional and high-rate thickeners);
  • Thickening in high-rate units (Delkor);
  • Filtering testworks (ceramic filters, pressure filters);
  • Filtration in pilot pressure filters;
  • Determination of parameters and technology development of semidry stockpiling of processing plant tailings.

Pilot plant testing:

  • Ore pilot tests according to different process flowsheets (gravity, gravity-flotation, gravity-leaching, gravity-flotation-leaching);
  • Pilot plant installations have a flexible process design and this makes it possible to treat continuously up to 3-5 tons of ore (20-100 kg/h capacity).

Set of tests for determination of physical and mechanical as well as process properties of ore enables performance of technological deposit mapping, issue of recommendations for an efficient ore processing flowsheet and design criteria.

Dense media separator (Russia)
FLSmidth pressure filter (USA)
Imhoflot H-Cell pilot plant (Germany)
Pilot Jameson Cell (Australia)


Reference list for testworks

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