Weathering coal discrimination method using thermogravimetric analyzer

摘要

The present invention relates to a method for discriminating weathered coal having a deteriorated quality of coal used in blast furnace coke raw materials, and the like. It is an object of the present invention to provide a method for discriminating weathered coal more simply and efficiently within a short time by determining weathered coal by weight increase or decrease.;In the present invention, a method for determining weathered coal using a thermogravimetric analyzer, wherein coal is heated at a temperature increase rate of 5 ° C / min or more under an oxidizing atmosphere, and the raw coal having a weight increase of less than 1% generated in a temperature range of 200-300 ° C. The summary of the weathering coal discrimination method using a thermogravimetric analyzer which determines that the weathering coal is a weathered coal.