In December 2022 Institute TOMS successfully proved its expertise for compliance with requirements GOST ISO/IEC 17025-2019 “General requirements for the competence of testing and calibration laboratories”
Udokan Copper company addressed a Letter of Appreciation to Institute TOMS to thank them for proper and timely completion of the complex pre-design and design works
Through 2020 to 2022 within the framework of five separate contracts Institute TOMS successfully completed design works for Bystrinskoye mining company (GRK Bystrinskoye)
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.
In November 2022, a positive appraisal report of the Federal autonomous institution “Main Department of State Expertise” was received for the project “Lebedinsky GOK, JSC. Processing plant. Flotation Complex”
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.
The data derived from the test allows a curve of specific energy vs. 80% passing product size (or other requested size fraction) to be generated, i.e. energy consumption required to grind material to a target size.
To run the test a 10-15 kg representative sample is required. Any coarse bulk material can be used as the test feed; it will be conditioned to a proper state by preliminary comminution operations.
Testing of fine products (finely ground ore, middling products, concentrates) is possible as well. Individual sample size and weight requirements will be determined depending on the material properties, specified targets and goals.
The mining industry makes use of different comminution technologies for secondary grinding duty, e.g., ball mills or high-intensity grinding mills. Nowadays, vertical stirred mills (Vertimill by M:O) are common in fine grinding applications. Since recently, vertical mills have been growing to become an alternative to ball drum mills within secondary and tertiary grinding circuits.
The bench-scale Jar Mill test using the Metso:Outotec procedure is aimed at direct sizing and design of commercial Vertimills.