Abstract:

The factors that affect the different levels of coke strength of seven kinds of coke produced fromseven single coals and one kind of coke from blended coal are studied. In the microstructure features of coke, the factors that have greater affect are the average wall thickness B of coke and optical heterosexual index H1. Microstrength is affected directly by the composition of optical organization of coke pore wall; the structural strength is influenced more greatly by porosity P and B, M40 and M10 depend mainly on B and H1,  except that CSR is influenced by pore wall thickness and optical organization of pore wall, it has a close correlation with the composition of ash. The greater influences on petrology and coal quality index parameter are Rmax, S, ∑I and G.