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In this study, investigations were made as to the effect of the maceral compositions and mineral matter content of Azdavay and Kurucasile coals on the coking property. Chemical and maceral analyses and coking properties were determined for the products of the float-sink procedure. The coking properties were established on the basis of free swelling index and Ruhr dilatometer tests. Maceral analyses showed that as the ash content of a coal containing both high and medium volatile matter increases, its effective maceral proportion decreases, and the coking property is affected in an unfavorable way.
The author would like to express his gratitude to the Directorate of the Amasra coal-mining unit of the Turkish Coal Board for their help in taking the samples, to Selami Toprak and A. Ihsan Karayigit for their support in carrying out the maceral analyses and to W. Simonis, a teaching staff member at Technical University of Berlin, and his group.