Coke/ Met coke/ Foundry coke
Coke is a type of solid fuel. It is obtained by dry distillation of coal at a high temperature of about 1000°C. The main component is fixed carbon, followed by ash, which contains very little volatile matter and sulfur. It is silver gray with metallic luster. Hard and porous.
Most of its calorific value is 26380~31400kJ/kg (6300~7500kcal/kg). According to different uses, there are three categories of metallurgical coke, foundry coke and chemical coke. According to the size, there are lump coke, broken coke and coke dust. It is mainly used for smelting iron and steel or other metals, and can also be used as a raw material for the manufacture of water gas, gasification and chemical industries.
It is mainly used for smelting iron and steel or other metals, and can also be used as a raw material for making water gas, gasification and chemical industries, etc.
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., and acts as a reducing agent, heating agent and material column skeleton. The use of coke instead of charcoal in the iron-making blast furnace laid the foundation for the large-scale modern blast furnace, which is a major milestone in the history of metallurgy. In order to achieve better technical and economic indicators for blast furnace operation, coke 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 ironmaking and non-ferrous metal smelting (metallurgical coke), coke is also used in foundry, chemical industry, calcium carbide and ferroalloys, and its quality requirements are different. For example, coke for casting generally requires large particle size, low porosity, high fixed carbon and low sulfur content; coke for chemical gasification does not have strict requirements on strength, but requires good reactivity and high ash melting point; coke for calcium carbide production requires Maximize the fixed carbon content.
