Correlation of Performance Characteristics of Domestic-Stoker Coals With Their Chemical and Petrographic Composition

Abstract

There is a definite need for information about the value of chemical and petrographic analyses in predicting the behavior of stoker coals in domestic stokers. In order to obtain this information in our Illinois studies, performance characteristics of a large number of coals were determined and correlated with the various items of the proximate and ultimate analyses, heating value, varieties of sulphur, ash analysis, ash-fusion temperatures, free-swelling index, petrographic analysis, and Gieseler plasticity. A brief report on the results, including some graphs of the more useful correlations, are given.