Henan Province is one of Chinas main coal-producing provinces, with rich coal resources, wide distribution of coal-bearing strata, multiple coal-forming geological eras, favorable coal seam occurrence conditions, and excellent coal quality. The coal-bearing strata in this province are numerous and the coal types are relatively complete, and they feature a distribution in regional ring-shaped belts. The main coal types include anthracite, lean coal, super-lean coal, lean coking coal, coking coal, 1/3 coking coal, fat coal, long-flame coal, lignite, and a small amount of gas coal and weak caking coal. The ash content is 6.11~35.63%, volatile matter is 2.14~41.66%, total sulfur is 0.27~4.39%, and carbon content is 75.13~93. 9%, Qnet,ar as-received basis lower calorific value 6410~9600 kcal/kg.
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