DRA supplies automated DMS plants to Mirnyi

DRA Mineral Projects Ltd is constructing two new 150t/h, automated DMS plants at Alrosa’s Mirnyi Ore and Processing Complex, Plant No. 3 Main Building in the North Eastern region of Siberia, Russia.

The new plants are to be retro-fitted into the existing plant to treat the fraction of material measuring -5mm to 1.2mm diameter.

The plants consist of two modules in one structure which were fabricated and pre-assembled in Johannesburg, South Africa. This includes the installation of mechanical equipment, plate work and piping.

Once complete, the plants were disassembled, packed into containers and shipped to Saint Petersburg at the end of 2010. From there they were transported by rail to Ust-Kat near Lake Baikal, and by truck to Mirnyi.

The plants will be used to treat kimberlite from the mines underground operations. They will be fed with a compact weigh feeder (built by Thermofischer) complete with a variable frequency drive for control.

The material is fed onto a de-sliming screen, through parallel cyclones, and the cyclone overflow (waste) material is split on a double desk screen where the material is divided into +3mm and -3mm fractions for reprocessing.

The construction supervisor has been dispatched to assist with the reconstruction of the plants on site. In the coming weeks, the commissioning team will be sent to site to commission and hand over the plant.