Assessing the ash composition and properties in mathematical models of CSR and CRI: A review

Abstract

Quantitative characteristics of the chemical composition (Ub and Ib) and properties (melting point, actual density) of ash used in predicting CSR and CRI for coke are analyzed. It is found that Ub and Ib are interdependent but are not analogs, since the first includes the ash content of the coal, whose variation affects the ash composition. Because of the considerable discrepancy in the Ub and Ib values calculated from the actual density or chemical composition of the ash and used in the prediction of CSR and CRI, there will be a great discrepancy between the actual and predicted values of CSR and CRI (7–11%).