New here, so I’m sharing some basic knowledge about coking. Hope it’s useful to everyone

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The physical properties of carbon, or coke, include the sieve analysis composition of coke, its bulk density, true relative density, apparent relative density, porosity, specific heat capacity, thermal conductivity, thermal stress, ignition temperature, coefficient of thermal expansion, shrinkage rate, electrical resistivity, and air permeability. The physical properties of coke are closely related to its mechanical strength and thermal strength at room temperature, as well as its chemical properties. The main physical properties of coke are as follows: the true density is 1.8–1.95 g/cm3 ； 　　Apparent density is 0.88–1.08 g/cm3 ； 　　The porosity is 35-55% ； 　　The bulk density is 400-500 kg/m3 ； 　　The average specific heat capacity is 0.808 kj/(kg·K) at 100°C, and 1.465 kj/(kg·K) at 1000°C ； 　　The thermal conductivity is 2.64 kj/(m·h·K) at room temperature, and 6.91 kg/(m·h·K) at 900°C ； 　　The ignition temperature (in air) is 450-650℃ ； 　　The low calorific value of the dry, ash-free base is 30-32 kj/g ； 　　Specific surface area is 0.6-0.8 m2/g