Addition of DRI/HBI and scrap to the blast furnace – A means to reduce greenhouse gas emissions?

Author(s) I. Cameron
Presented at ECIC 2022.

Direct reduced iron (DRI) and hot briquetted iron (HBI) are added to electric arc furnaces (EAFs) to dilute scrap residuals; added to the basic oxygen furnaces to displace purchased scrap; or added to the blast furnace to decrease coke rate and increase productivity [1]. In Europe, the imperative to reduce carbon dioxide emissions has renewed interest in adding DRI/HBI directly to the blast furnace to reduce its carbon consumption. The merits of adding DRI to blast furnaces to reduce CO2 emissions has not been well documented.