Anthracite, commonly known as white coal or red coal. It is the coal with the largest degree of coal. Anthracite fixed carbon content is high, the volatile yield is low, the density is big, the hardness is big, the ignition point is high, does not smoke when burning. Black hard, metallic luster. Fire is short and smoke less. No coking. The general carbon content in more than 90%, volatile matter under 10%. The main application of anthracite coal is fertilizer (nitrogen, ammonia), ceramics, forging and other industries; Smokeless coal is mainly used in metallurgy and refractory industry.