Effect of calcination temperature on microstructure and main physicochemical properties of high-sulfur petroleum coke
To explore the influence of calcination temperature on microstructure and main physicochemical properties of high-sulfur petroleum coke,it underwent calcination treatment in the range of 600～1 400℃.This study first investigated the evolution process of microstructure of high-sulfur petrole-um coke during calcination using DTA-TG-DTG,FT-IR,XRD,Raman spectroscopy and polarized light microscopy(PLM).Subsequently,the sul-fur content,true density and powder resistivity of the calcined coke at different temperatures were measured.The results indicate that along with the in-crease of calcination temperature,the C-H infrared absorption peak disappears,the C=C infrared absorption peak weakens,and the carbon microcrys-talline structure exhibits a noticeable improvement in orderliness.As the calcination temperature rises,the physicochemical properties of high-sulfur pe-troleum coke significantly improve,with the sulfur content of the coke calcined at 1 400℃ reaching 1.61％,true density reaching 2.09 g/cm3 and pow-der resistivity reaching 300 µΩ·m.
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