Abstract:
In Sri Lanka high grit ball clay is not mined al all from the ball clay deposits as the process adopted in purification is Dry Processing. It involves dry grinding causing high wear and tear to the grinding mill. Hence the cut- off grade of ball clay for Mining and processing is determined by the grit content which is limited to a maximum of 2%. In this research the authors have experimented on high grit ball clay and have suggested a flow sheet for its processing Though the capital outlay is high in the method suggested . authors’ aim is to make use of this mineral deposit industrially with optimum utilization.
