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Prediction model for coke reactivity index and coke strength after reaction

Sijian Qu

Abstract

The mathematic relationship between coking coal's characters and coke reactivity index (CRI) and coke strength after reaction (CSR) was studied.Main effect factors were analyzed by dynamics model formed by metaplast and mesophase.Taking metamorphic degree of coal, coal maceral, caking property, ash and the content of K_2O and CaO as independent variable, forecasting model was set up by the coking tests with 25 kinds of coals used in the industries.It concludes that exinite in coal makes CRI increase and CSR decrease; the catalysis of K_2O is higher than one of CaO; the catalysis of K_2O and CaO is different with the difference of metamorphic degree of coal.

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Key concepts: Coke, Coal, Maceral, Caking, Reactivity (psychology), Coke strength after reaction, Chemistry, Catalysis