Fundamentals of clean technology of ironmaking and steelmaking

点击翻译按钮获取中文摘要

For sustainable economic development globally, the ironmaking process based on blast furnace has to change for better environment protection and energy efficiency in the future, however, existing blast furnaces will remain to be operational for some time due to the fact that it will take huge amount of capital to replace it.  Two projects are proposed here, one is aimed to improve the efficiency of blast furnace and the other is aimed for the development of new processes and the control of RHF.(1) Force Balance in the Interior of Blast Furnace (PhD thesis, Mr.D. Pomeroy)Mathematical models of blast furnace, based on principles in Fluid Mechanics and Soil Mechanics( a cold model first and followed by a hot model) are being built to study physical phenomena in the interior. The effort is pioneering in nature and results would be influential in the control of the operation for stable, safe, efficient and long campaign life practice.(2) Kinetics of Reduction of Iron Ore in Ore/Coal Composite Agglomerates ( A graduate student or a post-doctorate fellow)Ore/coal composites are relatively new on the ironmaking scene.  It has been in general accepted as the preferred starting material (for the elimination of coking and high temperature agglomeration) for all types alternative new processes. The system consists of not only gas-solid reactions involving iron oxides, but also carbonization and carbon gasification, steep temperature gradient and viscous flows.  The results of this fundamental study will be useful in the improvement in the control of Rotary Hearth Furnace and in the development of new ironmaking processes.