1. Usage of anthracite: used for filtration and purification of domestic water supply and industrial water supply. When using, determine the usage parameters according to the form of the filter. Generally, the paving thickness of the double-layer filter is 300-400mm; the normal filtration speed is 10-14m/h, and the forced filtration speed is 14-18m/h; three-layer filter material paving The thickness is 450mm, the normal filtration speed is 18-20m/h, and the forced filtration speed is 20-25m/h. Filter backwashing uses water flushing, water vapor flushing or supplemented by surface flushing. Anthracite lump coal is mainly used in chemical fertilizers (nitrogen fertilizer, synthetic ammonia), ceramics, manufacturing and forging and other industries; anthracite pulverized coal is mainly used in the metallurgical industry for blast furnace injection (blast furnace injection coal mainly includes anthracite coal, lean coal, lean coal and gas coal ).

2. Anthracite (English name anthracite), commonly known as white coal or red coal. It is the coal with the greatest degree of coalification. Anthracite has high fixed carbon content, low volatile component yield, high density, high hardness, high ignition point, and does not emit smoke when burned. Black is hard and has a metallic luster. Rubbing with fat will not cause staining, the fracture will be shell-shaped, and the flame will be short and smokeless when burning. No coking. Generally, the carbon content is more than 90% and the volatile matter is less than 10%. No colloid layer thickness. The calorific value is about 6000-6500 kcal/kg. Sometimes, those with extremely large volatile content are called semi-anthracite; those with extremely small volatile matter content are called high anthracite.