Cold-state spout-fluidizing characteristics of high-carbon ferromanganese powders

The spout-fluidizing characteristics of high-carbon ferromanganese powders with different sizes and masses were studied via a plexiglass spout-fluidized bed with an inner diameter of 30 mm and a height of 1000 mm.The relationships between bed voidage and such parameters as bed height,particle size,fluidizing air velocity,and air flow were obtained.Experimental results show that the powder material with high density can be fluidized in the spout-fluidized bed where the particle size is a key factor influencing the quality of fluidization.

高碳锰铁粉流态化初步研究

高碳锰铁粉粒度细、比表面积大。采用气固流态化脱碳可以发挥温度均匀、接触面积大、传热效率高等优点一分别设计了内径30mm、高1000mm的有机玻璃喷动床和流化床,研究了不同重量高碳锰铁粉在两类床型中的冷态流化特性,并在莫来石材质的喷动床中进行了流态化加热试验。试验表明,喷动床与流化床均可以实现高碳猛铁粉的流态化,床型和物料重量是影响流化参数的主要因素,流化气体温度和流量是影响加热效率的主要因素,温度升高会使高碳锰铁粉产生粘结。