Abstract:
In addition to providing energy and some gases for the reduction of iron ore, coke has the important function of supporting the load and creating a permeable bed for gases rising. CRI (Coke Reactivity Index) and CSR (Coke strength after reaction) are important parameters that analyzed coke in order to measure how much the coke produced is able to perform its physical work in blast furnace environment. Several studies have been published with the partial replacement of coal by biomass as a way of reducing costs and, most importantly, changing the energy matrix of steel plants based on fossil fuels by clean and renewable sources. It is known that for large amount addition of biomass there is an increase in CRI and a decrease in CSR, not being viable for use in the blast furnace. However, there are studies showing that certain quantities can be used, bringing economic and environmental gains. Therefore, this work shows several studies of using biomass in coke and the impact that this addition has on CRI and CSR parameters, as well as the feasibility of using it in some quantities.