Beneficiation Aspects to Improve the Quality of Bauxite Mining Waste PLK Rock

With the gained importance of converting “Waste into Wealth”, the demand for utilization of Bauxite mining waste such as Partially Laterised Khondalite (PLK) rock has increased significantly. Due to the presence of good amount of alumina (~40%), this waste rock could act as one of the potential secondary resources of alumina if extracted or enriched in a feasible way using some physical beneficiation techniques. With the intention to utilize this waste rock, we herein proposed feasibility study on PLK rock using some possible beneficiation techniques. In the present study, work was conducted to improve the quality of Bauxite mining waste PLK rock using various physical beneficiation processes such as hydrocyclone, air classifier, and magnetic separation.