Abstract
Coal preparation forms the basis of effective use of coal wealth and promotion of heat economy. Namely, the economical preparation of suitable and efficacious coal realize the purpose of coal preparation. In promotion of coal prepar-ation with satisfaction of producer as well as consumer, the following three points should be taken into consideration
(1) Minimum-fitting coal preparation to specification for the use,
(2) Maximum utilization of energy maintained in coal with rewashing the refu-se from the primary washing, and
(3) Effective application of middling and submiddling materials at the mine or the district,
These three matters and the utilization of fine coal are described practically giving examples.
