title: Effect of mass fraction of long flame coal on swelling pressure and microstructures of cokes.
abstract: Long flame coal are abundant and widely distributed in China, but the resource utilization is quite low, the production efficiency is not high. Stamp-charging coke making technology can bend some long flame coal, which can reduce production cost and expand the coking coal resources. The long flame coal of different mass fraction is added into prime coking coal including fat coal from Longhu, 1/3 coking coal from Xinjian and coking coal from Didao in experiment. The swelling pressure is tested on-line detection using pressure sensor in coke making process, and the pores are observed by scanning electron microscopy. The results show that, the swelling pressure first increase and then decrease with the temperature increased and the maximum swelling pressure reduces gradually with mass fraction of the Long flame coal from Shenmu increased in coke making process. The SEM images of resultant coke display that the coke get more and more loose and the amount of pores is increased with mass fraction of the long flame coal from Shenmu increased. The amount pores and the pore diameter both is minimum for coking coal from Didao as prime coking coal under the same fraction of long flame coal.
authors: Key Laboratory of Advanced Coal & Coking Technology, University of Science and Technology Liaoning, Anshan Liaoning 114051, China.  15998019726@163.com
authors: Zhenning
authors: Z
authors: Zhao
authors: Key Laboratory of Advanced Coal & Coking Technology, University of Science and Technology Liaoning, Anshan Liaoning 114051, China. Electronic address: jinfengbai@tom.com.
authors: Jinfeng
authors: J
authors: Bai
authors: Key Laboratory of Advanced Coal & Coking Technology, University of Science and Technology Liaoning, Anshan Liaoning 114051, China.
authors: Jun
authors: J
authors: Xu
authors: Key Laboratory of Advanced Coal & Coking Technology, University of Science and Technology Liaoning, Anshan Liaoning 114051, China.
authors: Yaru
authors: Y
authors: Zhang
authors: Key Laboratory of Advanced Coal & Coking Technology, University of Science and Technology Liaoning, Anshan Liaoning 114051, China.
authors: Xiangyun
authors: X
authors: Zhong
authors: Coking & Refractory Engineering Consulting Corporation, Anshan Liaoning 114002, China.
authors: Hongchun
authors: H
authors: Liu
authors: Coking & Refractory Engineering Consulting Corporation, Anshan Liaoning 114002, China.
authors: Dekai
authors: D
authors: Yang
mesh_terms: D003077:Coke / Q000032:analysis*; D008855:Microscopy, Electron, Scanning; D008970:Molecular Weight; D011312:Pressure
chemical_list: D003077:Coke
keywords: coke morphology; long flame coal; stamp-coking technology; swelling pressure