Metallurgical and Materials Transactions B

, Volume 44, Issue 4, pp 1000-1009

First online:

Study of Organic and Inorganic Binders on Strength of Iron Oxide Pellets

  • Urvashi SrivastavaAffiliated withMichigan Technological UniversityResearch & Development Technology Center, Midrex Technologies Email author 
  • , S. Komar KawatraAffiliated withDepartment of Chemical Engineering, Michigan Technological University
  • , Timothy C. EiseleAffiliated withDepartment of Chemical Engineering, Michigan Technological University

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Bentonite is a predominant binder used in iron ore pelletization. However, the presence of a high content of silica and alumina in bentonite is considered undesirable for ironmaking operations. The objective of this study was to identify the alternatives of bentonite for iron ore pelletization. To achieve this goal, different types of organic and inorganic binders were utilized to produce iron oxide pellets. The quality of these iron oxide pellets was compared with pellets made using bentonite. All pellets were tested for physical strength at different stages of pelletization to determine their ability to survive during shipping and handling. The results show that organic binders such as lactose monohydrate, hemicellulose, and sodium lignosulfonate can provide sufficient strength to indurated pellets.