Recent advances in Canadian coal preparation

CIM Bulletin, Vol. 72, No. 802, 1979

BRIAN RAYMOND and BOYD PAYNE, Techman Ltd., Calgary, Alberta

This paper will outline the problems and solutions of the new-generation washeries, as well as the recent technological advances which are being considered for future coal preparation plants. The subjects to be covered will include:— reasons for considering coal preparation plants;— raw coal crushing and handling systems;— types of coal cleaning equipment being used versus new equipment being considered;— fine coal circuit sizing;— clean coal centrifuging and dewatering;— thermal dryer problems and changes;— fine refuse dewatering systems;— clean coal storage problems and changes;— materials handling within the plants; and— control systems for preparation plants.The design and integration of the various circuits that form a modern coal preparation plant have led to the creation of an exciting new field of industrial research. As the need for energy sources increases, efficient methods of preparing coals for specific markets will become more important.
Keywords: Coal preparation, Metallurgical coal, Coal handling, Coal cleaning, Classifying, Dewatering, Drying, Storage, Loading