A Study to Predict CSR of Coke, Produced from Weathered Coal

Abstract

In this study straight coals were weathered in open piles at Bhilai Steel Plant (BSP). Imported Hard coals were selected for the studies. Several weathering indicators such as Alkali Extraction test (Transmittance), Free Swelling Index (FSI), pH of coal slurry, petrography were used to monitor weathering of individual coal. In order to study the effect of weathering on coke quality, coke was prepared by Box charging in the commercial oven. Using the weathering indicators, regression models were also developed to predict the coke hot strength (CSR). Transmittance and pH have better prediction equations with R square more than 0.97. Such model can be used to forecast the coke hot strength, for weathered coal.