Incorporation of biomass-derived materials in coal blends for cokemaking is one of the strategies that could
reduce the levels of greenhouse gas emissions produced by the steelmaking process. Bio-coke refers to the
resultant coke prepared with the addition of charcoal to a coal blend. In this work, characteristics of bio-coke
gasification by reacting with CO2 were examined using Thermal Gravimetric Analysis. Bio-coke samples with
different levels of charcoal addition to a coal blend were prepared in the CanmetENERGY pilot-scale coke
oven. These samples were heated in CO2 for identification of the minimum gasification temperature. Sample
gasification rates at 1000 °C were also measured. It was observed that mineral content plays an important
role in the gasification characteristics of the bio-cokes. Those with low mineral content behave very similarly
to the reference coke. Higher mineral content bio-coke reacts with CO2 at a lower temperature. It was found
that the gasification characteristics of the bio-cokes are well described by the alkalinity index.