Blue charcoal is made from clean coal blocks. As a new type of carbon material, it has the characteristics of high fixed carbon, high specific resistance, high chemical activity, low ash content, low aluminum, low sulfur and low phosphorus. It is widely used in the production of ferroalloy, ferrosilicon, silicon carbide and other products to gradually replace metallurgical coke, becoming an irreplaceable carbon material. Blue charcoal can replace coke (metallurgical coke) and is widely used in chemical industry, smelting, gas production and other industries.