Research Team: A/Prof. Pramod Koshy, Dr. Xing Xing (School of Materials Science and Engineering), Dr. Sushil Gupta, Dr. Wen-Fan Chen, Prof. Charles Sorrell, Dr. Hannah Lomas (University of Newcastle), Dr. Michael Drew (ANSTO), Mr. Kim Hockings (BHP), Mr. Stephen Brant (BHP), Mr. Nick Andriopoulos (Angloamerican)
Industry Partner: ACARP
Timeframe: 2016 – 2017 (stage 1), 2017 – 2018 (stage 2), 2018 – 2019 (stage 3)
Objectives
Outcomes
Objectives
- Determine the high-temperature compressive strengths at 1100°-1700°C of cokes with varying CSR values before and after gasification in conditions simulating the blast furnace
- Determine correlations between CSR values with the actual modification of coke strength at high temperatures and after reactivity tests and associated changes in microstructure and mineralogy, and with the parent coal properties
Outcomes
- Data showed enhanced understanding of the effect of temperature and gasification on the strength evolution of cokes at high temperature under blast furnace conditions
- Gasification under simulated blast furnace conditions has an impact on the strength development of the cokes with the CSR values and temperature of strength testing having an impact on the extent of degradation
- At higher temperature, in situ phenomena occurring in the cokes was found to have the greater impact compared to the inherent coke properties
- The strength evolution at high and room temperatures was seen to occur via different mechanisms with ductile (plastic) and brittle fracture behaviour being the dominant mechanisms, respectively