Coke is one of the main raw materials for producing steel bars. Coke and rebar are generally positively correlated.
The production process of steel is mainly blast furnace-converter-rolling process, and its main process is: iron ore-sintering-blast furnace ironmaking-converter steelmaking-refining-continuous casting-heating-rolling-finishing.
According to the principle of blast furnace smelting, the production of 1 ton pig iron requires 1.5-2.0 tons of iron ore, 0.4-0.6 tons of coke and 0.2-0.4 tons of solvent.
Therefore, the main factor affecting the total cost in the ironmaking process is the cost of raw materials (iron ore and coke).
Extended data:
Physical properties of coke include coke screening composition, coke bulk density, coke true relative density, coke apparent relative density, coke porosity, coke specific heat capacity, coke thermal conductivity, coke thermal stress, coke ignition temperature, coke thermal expansion coefficient, coke shrinkage, coke resistivity and coke permeability.
The physical properties of coke are closely related to its mechanical strength, thermal strength and chemical properties at room temperature. The main physical properties of coke are as follows:
The average specific heat capacity is 0.808kj/(kgk)( 100℃),1.465kJ/(kgk) (1000℃).
The thermal conductivity is 2.64kj/(mhk) (room temperature) and 6.91kj/(mhk) (900℃);
Ignition temperature (in air) is 450-650℃;
Low calorific value of dry ash-free base is 30-32kJ/g;
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