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Paper presents the results of study of influence of fine coal fraction addition to coking blend and its partial briquetting on coke quality parameters CRI and CSR. CRI and CSR are currently the key quality parameters of coke commonly used to assess its technological suitability for blast furnace coke. The raw materials used for the research were coals and fine coal fractions (flotation concentrates) from one of the domestic producers of coking coals. These coals are the basic components of blends used in the domestic coke industry. Studies have shown that increase in the content of flotation concentrates (FC) in the coal blend results in a significant reduction of the bulk density of the coal charge. As a consequence of the decrease in the density of the coal charge, coke reactivity CRI increased and coke strength after reaction CSR decreased. To minimize the adverse impact of FC addition, partial batch briquetting was implemented. Briquetting of the coal charge made it possible to produce coke with qualitative parameters similar to the same blend without the addition of a flotation concentrate and allows to improve the quality of coke produced or to produce coke of the same quality but with a higher share of semi-soft coals

The Study Of Influence Of Fine Coal Fraction Addition To Coking Blend And Its Partial Briquetting On Coke Quality Parameters