Innovative Solutions in Iron Ore Production at Mikhailovsky Mining and Processing Plant

Resumo

The article describes features of ore reserves and development of processing technologies at Mikhailovsky MPP. New approaches to disintegration of ore and to improvement of dry magnetic separation of unoxidized ferruginous quartzite are evaluated. The scope of the discussion embraces the process of finishing magnetite concentrate, extracted from unoxidized ferruginous quartzite by wet magnetic separation, using the flotation flow chart in the closed and open circuits, as well as with the reverse cation flotation of hematite concentrate from tailings of wet magnetic separation. The authors present engineering solutions aimed at designing energy-efficient horizontal-grate calcinator MOK-1-592 and the technologies to produce different-purpose iron ore pellets.