Research on the distribution of coking coal resources and coal quality characteristics in Guizhou Province

ZHANG Ningning

doi:10.3969/j.issn.1007-7677.2025.05.005

Abstract：A systematic study on the distribution and quality characteristics of coking coal resources in Guizhou Prov-ince can lay a theoretical foundation for the high-quality development of the coking industry in Guizhou Province and the southwestern region.Aimed at Guizhou coking coal,based on the distribution of coal resources in Guizhou Province,the resource distribution and main coal quality characteristics of Guizhou coking coal were studied.The results showed that the coking coal resources in Guizhou Province were mainly concentrated in Panjiang mining area and Shuicheng mining area.Small and medium-sized coal mines were the main coking enterprises in Guizhou Province.The vitrinite reflectance of coking coal in Guizhou Province was between 0.86％and 1.77％,with an average of 1.29％.According to Chinese classification of coals,the main types of coal were coking coal,1/3 coking coal,lean coal and fat coal.Most coking commercial coal in Guizhou Province was ultra-low sulfur and low sulfur coal.The total sulfur content of coking coals in Guizhou Province was obviously lower than that in Shanxi Province and Inner Mongolia Autonomous Re-gion under the condition that the caking index was not much different.However,the southwest of Guizhou was general-ly a marine environment,and the average sulfur content there was high.Attention should be paid to reducing sulfur by washing or other means when using the coal in southwest of Guizhou.The proportionof coking coal with strong caking property in Guizhou was over 80％.The average caking index of primary coking coal in Guizhou was higher than the na-tional average,and also higher than that of Shanxi coking coal and Mongolia No.3 coking coal.The alkali metal con-tent in coking coal in Guizhou met the requirements of limiting the total amount of K and Na in coking commercial coal.