采用回转窑生产供高炉用的球团或用于对球团的直接还原,以低质煤代替冶金焦炭作还原剂,不用高炉而用回转窑得到金属化球团作为电炉炼钢原料.回转窑在耐火材料、有色冶金、黑色冶金工业中都广泛的被应用;物料在回转窑内的运动过程,如物料在各段的填充率、停留时间、物料随窑体转动升起高度和降落时间,对回转窑的产量和窑内的传热条件及物理-化学反应都有着直接的关系.关于物料在窑中的运动,不少人有过专门的研究和计 The use of rotary kiln for the production of blast furnace pellets or pellets for the direct reduction of low-quality coal instead of metallurgical coke as a reductant, without the use of blast furnace and rotary kiln to get metalized pellets as EAF raw materials. Rotary kiln In refractories, nonferrous metallurgy, black metallurgy industry are widely used; materials in the kiln movement process, such as material filling rate in each section, dwell time, the material with the rotation of the kiln rise height and landing time, There is a direct relationship between the output of a rotary kiln and the heat transfer conditions inside the kiln and the physical-chemical reactions. Many people have had special studies and calculations on the movement of materials in a kiln