Method of discriminating weathered coal using oxidation heat

摘要

The present invention relates to a method for determining weathered coal in which the quality of coal used in blast furnace coke raw material is deteriorated (oxidized). The purpose of the present invention is to provide a method for discriminating weathered coal more simply and efficiently within a short time by discriminating weathered coal based on whether or not it is.;The present invention relates to a method for discriminating weathered coal in coal, wherein the total heat of reaction per unit mass emitted by heating coal to a temperature range of 600-800 ° C. at an elevated temperature rate of 5 ° C./min or more under oxidizing atmosphere is higher than that of uncoated coal. The main point is a method for discriminating weathered coal using heat of oxidation that determines that little coal is weathered coal.