Use of the petrographic model for coke quality prediction at the cherepovets iron-and-steel mill

The petrographic model for the assessment of quality characteristics according to the IGI procedure for coke produced by laminar coking of coal blends suggests the determination of the maceral composition and obtaining a vitrinite reflectance histogram for each component of the charge. From these data, the coking index of the charge and its leaning index are determined, which allow for predictive evaluation of the mechanical strength of coke with the use of the IGI classification diagram. This approach is successfully used at the Cherepovets iron-and-steel mill (CherMK) after the adjustment of the IGI procedure to the conditions of this plant.