Effect of Iron Ore Type on the Reduction Behavior During Multistage Hydrogen Reduction Process

Multistage fluidized bed reduction is one of the ironmaking technologies to replace blast furnace to achieve carbon neutrality. However, due to the absence of sintering process, characteristics of the iron ore are expected to significantly influence reduction behavior. Therefore, four-stage reduction experiments were conducted using four types of iron ores, including hematite, limonite and goethite by the thermogravimetric analysis. Different kinetic analyses were obtained at each reaction stage. Based on the results, it was analyzed that various factors including not only phases of iron oxides in iron ores but also gangue minerals and surface area affected the reduction behavior.

Authors:

Mr Seongkyu Cho | Pohang University of Science and Technology
 

Dr Leonardo Tomas Da Rocha | Pohang University of Science and Technology
 

Dr. Sungmo Jung | Pohang University of Science and Technology
 

Session Chairs:

Spencer Hawkins | Cleveland-Cliffs Iron Units LLC
 

Anup Sane | Air Products
 

A. Robert Necciai | Middough Associates, Inc.