Improvement of Calculation Methods for Heat Transfer Factor in Iron Ore Pellet Bed

For the sake of improving the calculation procedure for heat transfer in metallurgical unit dense beds a number of experiments has been carried out that allow adjustment of the heat transfer factor between the gas flow and the pellets in the course of heating. In the course of analysis, a permanent channeling flow was detected in thepellet bed at Re = 100 – 1400. The heat transfer factor was calculated and the pellet temperature was determined in the course of heating within ± 11.4∘C. Keywords: heat transfer in bed, pellet firing, dense bed, heat transfer factor, hydrodynamic resistance, gas flo

THE WORK OF MODERN ELECTRIC ARC FURNACE USING DIFFERENT FUELS

It was the estimate process and thermal performance of a modern electric arc furnace during the combustion of natural gas with oxygen to heat the cold charge in the furnace. The analysis of the rate of heating the raw materials up to the softening temperature of the iron-containing components.Выполнена оценка технологических и теплотехнических показателей работы современной дуговой сталеплавильной печи при сжигании природного газа с кислородом с целью нагрева холодной шихты в рабочем пространстве печи. Произведен анализ скорости нагрева шихтовых материалов до температуры размягчения железосодержащих компонентов