No.1-16 Formed coke process using low grade coals for direct melting system

Abstract

Cokes are used in the blast furnace and the direct melting system, etc. Good quality coking coals are needed in the conventional coke making process. However, high quality coking coal will be exhausted in the future. Therefore, the development of the new coke making process (Formed Coke Process) for direct melting system using low grade coal instead of coking coal has been conducted. As a result, it was clarified that it is possible to produce high strength formed coke using low grade coals introducing these technologies as follows. Optimization of volatile matter by coal blending operation, pre-carbonization.