钢铁厂含锌铅粉尘配碳球团的直接还原工艺

Direct Reduction Process of Pellet Containing Carbon with Addition of Zn-Pb-Bearing Iron and Steel Plant Dust

摘要: 对钢铁厂含锌铅粉尘配碳球团直接还原工艺进行了研究.结果表明：生球碱度及还原时间对球团中铅挥发率和铁的金属化率有显著影响，而还原温度则对球团中锌、铅挥发率和铁的金属化率均有显著影响.在此基础上确定的最佳工艺参数为：生球碱度～0.9，还原温度和还原时间分别为1250 ℃和25 min.

Abstract: The study on direct reduction process of pellet containing carbon with the addition of Zn-Pb-bearing iron and steel plant dust shows that the reduction time and pellet basicity have obvious effect on the evaporation of lead and final metalliztion degree of pellet.The reduction temperature has significantl influences on the lead and zinc evaporation ratios and on final metallization degree of pellet.The optimum parameparameters obtained are reduction temperature of 1 250℃, reduction time of 25 minutes and pellet basicity of 0.9.