Crystallite Structure Characteristics of Coke

In order to study the influencing factors on coke property,23 single coals were used for coking test proceeded in 20 kg coking battery and coke quality analysis.The crystallite structure parameters of obtained cokes were calculated by XRD.The relationship between crystallite structure of coke and coke macroscopic property was studied.The results show that the basic influencing factor on coke property is the structure of crystallite,as the basic unit of pore wall of coke.The crystallite structure of coke has a close relationship with the coal rank of coking coal.The density and unit size of crystallite are up to a maximum at coal vitrinite reflectance Rr about 1.2%.