材料期刊网

本文通过设计正交试验考察了焙烧温度、焙烧时间及配煤量对含锌粉尘脱锌率、金属化率、磁选精矿产率以及铁回收率的影响。试验结果表明最佳工艺参数为：焙烧温度1350℃，焙烧时间25min，配煤量6%。在此条件下的脱锌率和金属化率分别高达99.29%和99.68%，精矿产率为46.57%，铁回收率为95.46%。对经过最优方案焙烧并磁选处理后的精矿进行XRD分析，发现其主要物相为金属铁，并且没有含锌物相的衍射峰出现，可见此方案对含锌粉尘的处理效果最佳。

Orthogonal experiment was designed to investigate the effects of calcination temperature, calcination time, and the amount of blending coal on dezincing rate, metallization rate, concentrate rate, and iron recovery rate. The optimal process parameters are as follows: the calcination temperature is 1350℃, the calcination time is 25 min, and the blending pulverized coal is 6%. Under this condition, the dezincing rate and metallization rate are up to 99.29% and 99.68%, respectively, the concentrate rate is 46.57%, and the iron recovery rate is 95.46%. To pass the optimal scheme roasting and magnetic treatment concentrates XRD analysis found that the main phase is iron and no diffraction peak which contains zinc, this scheme has good effect on the disposal of zinc dust.