Bituminous coal is heated to -℃ in isolation from air, and then undergoes drying, pyrolysis, melting, bonding, solidification, shrinkage and other stages to finally make coke. This process is called high-temperature coking (high-temperature carbonization). Coke obtained from high-temperature coking is used in blast furnace smelting, casting and gasification. The recovered and purified coke oven gas produced during the coking process is not only a fuel with high calorific value, but also an important raw material for organic synthesis industry.
Coke is mainly used in blast furnace ironmaking and blast furnace smelting of non-ferrous metals such as copper, lead, zinc, titanium, antimony, mercury, etc. It serves as a reducing agent, exothermic agent and material column skeleton. The use of coke instead of charcoal in iron-making blast furnaces laid the foundation for the large-scale modern blast furnaces and was a major milestone in the history of metallurgy. In order for the blast furnace operation to achieve better technical and economic indicators, the coke used for smelting (metallurgical coke) must have appropriate chemical and physical properties, including thermal properties during the smelting process. In addition to being widely used in iron-making and non-ferrous metal smelting (metallurgical coke), coke is also used in casting, chemical industry, calcium carbide and ferroalloys, and its quality requirements vary. For example, coke for casting generally requires large particle size, low porosity, high fixed carbon and low sulfur content. Chemical gasification coke does not have strict requirements on strength, but it requires good reactivity and a higher ash melting point. Coke for calcium carbide production requires as much as possible. Fixed carbon content.
Coke Crusher Coal Crusher Double Stick Crusher Roller Crusher Tooth Roller Crusher