Enrichment Chromite Sand Grade Using Magnetic Separator

Abstract

To fulfil requirements of mettalurgical grade 48% Cr2O3 with Cr:Fe ratio 3:1 need the right beneficiation, one of them is using magnetic separator. Chromite sand sample obtain from Konowe-Southeast Sulawesi have low grade, so it needs process to enrichment Cr:Fe Ratio. Cr:Fe ratio feed was 0.55, after the process for size variation, roll speed, feeder speed and electric current decline Cr:Fe Ratio around 50.5%. When size -65+100 mesh Cr:Fe ratio was 0.282. At roll speed 20 RPM, feeder speed 50 Kg/Hr and electric current 1.5 A have Cr:Fe ratio 0.3525. Therefore, it needs more beneficiation before using magnetic separator for chromite sand from Konowe-Southeast Sulawesi.