用铁浴法分离高炉炉尘中的铅和锌

Separating Zn and Pb from BF Dust by Iron-Bath Process

针对湖南某钢铁厂含铅、锌高炉粉尘的综合利用问题进行研究,讨论了还原时间、还原温度及铁液量等因素对炉尘铅、锌分离效果的影响。结果表明:①还原温度对球团中铅、锌的挥发率有显著影响;②铁液可以提高铅、锌氧化物的还原速率;③铅、锌分离的最佳温度应控制在1050～1250℃之间;④收集物中ZnO含量高达87%左右。

In order to recycle BF dust bearing Zn and Pb of an iron and steel plant in Hunan province and produce high ZnO value, a lot of experiments were carried out during iron bath process. The effects of reduction time, reduction temperature and liquid iron amount on separating Zn and Pb from BF dust were discussed. The results are as follows: ① The reduction temperature has obvious effects on the evaporation of Zn and Pb; ② Liquid iron can significantly improve the reduction rate of zinc oxide and lead dioxide; ③ The optimum temperature of separating Zn and Pb must be controlled at 1 0501 250 ℃; ④ ZnO amount in collecting matters is about 87 %.