Optimization of duration between two castings in blast furnace

Today, steel continues to be an important engineering and construction material. Although various production methods have been developed with the developing technology in steel production, liquid raw iron (LRI) produced in BF's has an important share in the steel production process. In recent years, optimization of the time between castings in BF's has become one of the most important issues in steel production in terms of production continuity and efficiency. In this thesis, studies were done to determine the most appropriate time between two castings by ensuring production and process safety in BF's. Test studies were carried out on the ferrous materials charged from the YF top-metallurgical coke, pulverized coal (PCI) injected from tuyeres, amount of blown hot air, injected oxygen, number of charges, charging speed, chamber size dimensions, amount of LRI from torpedo level devices and taken crucibles for slag. Within the scope of this study, regression-modelling-correlation studies were carried out using Minitab 20 program with these parameters that affect the removal of LRI from the hearth, and the optimum time between two castings suitable for BF's raw material and process conditions was determined. As a result of these analyzes, the time between two castings; It was determined that charging speed, amount of blown hot air, amount of injected oxygen were effective, but it was determined that the metallurgical coke quality parameters were not affected.