Investigation of the Origin and Nature of Coke Variations in Non-Recovery/Heat-Recovery Coke Making

Status Start Date End Date Locations
completed Sep 1, 2011 Dec 31, 2016 All Counties
Director: Maria Mastalerz
Other Researchers: Agnieszka Drobniak Solomon Nyathi, Richard Kruse - ArcelorMittal La Braun Hampton - IGS
Issue: Coke properties and coke strength after reaction (CSR) are difficult to predict in a new generation coke ovens. More research is needed to understand variations in CSR and investigate the reasons for these variations in a heat-recovery coke oven.
Objective: The objective of our research is to further investigate the role of coal blend dilatation and rheology on coke porosity and CSR in an unconstrained heat-recovery cokemaking technology.
Approach: This goal is being accomplished by coking various coal blends with similar predicted CSR but different dilatation and fluidity properties, followed by the analysis of the coke products. Selected coal blends have been carbonized using box tests at the SunCoke’s Jewell Coke Plant in Vansant, VA. The resulting coke samples are characterized and a correlation between coke properties and coal blend dilatation, and coal blend fluidity will be ultimately established.
Products: Reports, publications, and presentations Nyathi, M., Kruse, R., Mastalerz, M., Bish, D. 2013. Impact of oven bulk density and coking rate on stamp-charged metallurgical coke structural properties. Energy and Fuels 27, 7876-7884. Nyathi, M.S., Mastalerz, M., Kruse, R., 2013. Influence of coke particles on pore structural deformation by optical microscopy. International Journal of Coal Geology 118, 8-14
Benefits: Research towards establishing a prediction model for coke quality in new generation coke ovens