Author(s)

S. Pintowantoro, H. Nogarni & J. Yagi

Abstract

Blast furnace is a principal metallurgical reactor in ironmaking process, and usually treated as a counter current moving bed reactor. In the lower part of this reactor, flows of gas, solid, liquid and powder exist at the same time. With recent increase in pulverized coal injection, operation problems due to deposition of fine particles in this zone have been arising. The authors developed a process simulator of blast furnace treating more than four different phases that had individual flow mechanisms. In this study, mathematical formulations describing powder deposition rate by difference between adhering and departing rates has been introduced, and the simulator is able to handle flowing and deposited powders separately. It is assumed that the deposited powder ph

Keywords