Institute TOMS became a title sponsor of the International Conference “Plaksin Readings – 2023” which was held in Moscow on October 2nd – 5th.
September 11, 2023, the President of Russian Federation, Vladimir Putin, took part in launching two landmark mining projects. They are Stage II of the gold plant within Pavlik mining and processing complex, and the concentrator plant of Udokan mining and metallurgical complex. Both projects were implemented on the basis of the process solutions developed by Institute TOMS.
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”
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.