论文部分内容阅读
采用热态可视流化床装置研究了973～1173 K不同气氛条件对流态化还原铁矿粉黏结失流的影响.研究发现,一定表观气速条件下温度和还原气氛组成对失流时铁矿粉的金属化率影响不大,而失流时颗粒微观形态受还原气种类和温度的影响较显著,但还原气体积分数对形态的影响较小.此外,流化时间随着还原气体积分数的增大而逐渐缩矩,并通过线性拟合得到了不同温度时二者间的数学关系式.
The effects of different atmosphere conditions of 973 ~ 1173 K on the bonding loss of fluidized reduced iron ore powder were investigated by using a hot-state visual fluidized bed reactor. It was found that the composition of temperature and reducing atmosphere under certain superficial gas velocity Iron ore powder metallization rate has little effect, while the loss of particle microscopic morphology by the reducing gas species and temperature of the more significant, but the reduction of gas volume fraction on the shape of the smaller.In addition, the fluidization time with the reducing gas The integral number increases and gradually reduces the moment, and obtains the mathematical relation between the two at different temperatures through the linear fitting.