Improved gravity separation : typical case studies in relation to slimes

Abstract

The present paper describes typical case studies of improved gravity separation of slimes in relation to (a) the separation of synthetic mixture of blue dust and kynite (concentration criterion 2) in advanced gravity separation equipment, and (b) preparation of bauxite feed following stage-grinding and size classification for enhanced separation following WHIMS. A sort of size classification has been achieved over the deck of belt concentrator which necessitates need to treat the slimes in a narrow size range, especially when the concentration criterion is less. A significant better yield and better grade of the products has been observed while following an improved method of feed preparation (stage grinding and size classification) vis-à-vis those following conventional one (grinding and de-sliming) for their separation.