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Dr David Jenkins (University of Newcastle)25/09/2018, 10:45CokemakingOral PresentationIn recent years we have conducted integrated mechanistic studies to understand the structures controlling coke strength and how these structures form in the plastic layer. These have involved micro CT studies of coke structures and calculation of the response of these structures to stress as well as fractographic studies of fracture surfaces in coke. A number of studies have identified that...Go to contribution page
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Lauren NORTH (School of Engineering, Newcastle Institute for Energy and Resources, University of Newcastle)25/09/2018, 11:05CokemakingOral PresentationTribological and scratch testing techniques were applied to metallurgical coke samples to determine (1) the abrasive strengths of the coke microtextural constituents, and (2) the strength of the interfaces between the inertinite maceral derived components (IMDC) and the reactive maceral derived components (RMDC), as a function of the properties of the parent coal(s). These parameters were...Go to contribution page
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Mr Nagashima Yoshihiro (Mitsubishi Chemical Corporation)25/09/2018, 11:25CokemakingOral PresentationDevelopment of coke production technology which can maintain high coke strength with use of certain amount of low rank coal is needed. Accordingly, it is important to investigate influence of coke pore structure on coke strength and dominant factors of coke strength. Anraku et al. established a Stress simulation method by using three-dimension images of coke which were taken by X-ray CT. In...Go to contribution page
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Apsara Jayasekara (University of Wollongong)25/09/2018, 11:45CokemakingOral PresentationCoke is a key reagent in the iron blast furnace process. To enhance its performance in the blast furnace a better understanding of the kinetics of coke reactions in the blast furnace is necessary. Using a synthetic coke (coke analogue) the gasification rate in CO2 of a coke containing calcia and calcium aluminates (CA6, CA, C3A) was studied. The coke analogue is a laboratory...Go to contribution page
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Ms Lauren North (Centre for Ironmaking Materials Research, The University of Newcastle, Australia)25/09/2018, 14:30CokemakingOral PresentationDespite the extensive research in the prediction of coke properties from the parent coals, at present, no single model exists to adequately predict coke quality from all coal basins. Whilst heavily used as a feature in early coke quality prediction models, the binding behaviour of the maceral components, termed fusibility, has had limited success in being implemented into a global prediction...Go to contribution page
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Prof. Jing LI (University of Science&Technology Liaoning)25/09/2018, 14:50CokemakingOral PresentationEvaluation of coking coal properties in coking Industry depends on several independent indicators tested in different test conditions for a long time, for example, Gieseler fluidity, Arnu-Audibert's dilatometer, plastometer indice, Roga index, and volatile content. On the other hand, evaluation of coke thermal properties depends on Coke Reactive Index (CRI) and Coke Strength after Reaction...Go to contribution page
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Mr Anrin Bhattacharyya (Montanuniversitaet Leoben)25/09/2018, 15:10CokemakingOral PresentationFurnace coke was experimental heated between 850°C and 1100°C by varying the gas composition and the alkali content of the raw coke. Raman spectroscopy (Iterative Fitting of Raman Spectra) evaluates the microstructural change of coke during the experiments. The obtained results indicate a significant microstructural variation within a bulk sample. This variation controls significantly the coke...Go to contribution page
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Mr Norimasa Ikeda (JFE Steel Corporation)25/09/2018, 15:30CokemakingOral PresentationJFE Fukuyama No.5 D battery, since this battery started up, we struggle to control the temperatures of center flues and they fall to a low level. We estimated that the amount of air flow in center flues is less than gas flow because of the oven structure. Then, we entertained the way to increase air flow and invented the way we insert air with C ports which are used in only C gas inflammation....Go to contribution page
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Mr Birendra Prasad (DALMIA OCL)25/09/2018, 16:15CokemakingOral PresentationSilica Bricks are made from Quartzite which mostly contents quartz phase. During making, the quartz is converted into phases like Tridymite and Cristobalite along with some amorphous phases. This polymorphic transformation in Silica brick is governed by the impurities present in parent quartzite and also with the addition of mineralizers. However in this process very little amount (<1%) of...Go to contribution page
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Prof. Johannes Schenk (Montanuniversität Leoben), Dr Runsheng Xu (Wuhan University of Science and Technology), Prof. Wei Wang (Wuhan uiversity of Science and Technology)25/09/2018, 16:35CokemakingOral PresentationHighly-reactive coke can improve the reaction efficiency of blast furnace, as well as decrease the reduction agent ratio and CO2 emission. Ferro-coke, which is obtained by combining coal with iron ore during coking, has been studied as a novel highly-reactive coke. In this study, effect of three iron ore types (limonite, hematite and oolitic hematite) on the gas generation, volume behavior,...Go to contribution page
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Mr Daisuke Igawa (JFE Steel Corporation)25/09/2018, 16:55CokemakingOral PresentationReasonable selection of coal brands and blending them for preparing raw material of coke are important to achieve the effective utilization of caking coal and enhancement of coke strength. Coal compatibility, namely “blending effect” has long been an unresolved problem. The effect is deviation between actual strength of coke made from coal blend and estimated strength which is calculated by...Go to contribution page
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