Beneficiation on a semi-industrial scale of satkin magnesites by the flotation technique with recycled water

Abstract

The flow sheet of the magnesite beneficiation includes beneficiation of the small and large ore fractions in separate sections in two stages using conical and cylindrical separators. The beneficiation of magnesite containing up to 5% impurities in place of the 15% envisaged in the design project should be carried out in a single stage.It was established that the process efficiency of magnesite separation depends on the lump size of the original magnesfte, the type and productivity of the separators, and the structuromechanical properties of the suspension.The beneficiation of the magnesite in heavy suspensions gave concentrate of grades 1 and 2 containing 45-46% MgO, 0.5-0.8% SfO2, and 0.8-1.2% CaO. The concentrate yield was 85-95%.