A detailed study was made of the various tine coal cleaning processes and it was finally concluded that the cyclone washer was the only known process which showed promise of solving the formidable washing problem.
Reference:
Van der Walt, P. 1952. A preliminary study of the technical and economic aspects of washing a certain Witbank duff in a cyclone in order to recover the coking fraction. http://hdl.handle.net/10204/13080 .
Van der Walt, P. (1952). A preliminary study of the technical and economic aspects of washing a certain Witbank duff in a cyclone in order to recover the coking fraction Retrieved from http://hdl.handle.net/10204/13080
Van der Walt, PJ A preliminary study of the technical and economic aspects of washing a certain Witbank duff in a cyclone in order to recover the coking fraction. 1952. http://hdl.handle.net/10204/13080
Van der Walt P. A preliminary study of the technical and economic aspects of washing a certain Witbank duff in a cyclone in order to recover the coking fraction. 1952 [cited yyyy month dd]. Available from: http://hdl.handle.net/10204/13080