高炉瓦斯泥精细还原实验研究

对某钢厂2,3号高炉瓦斯泥进行了XRF-荧光、XRD物相、粒度、化学分析得知：平均锌质量分数为3.64％,铁质量分数为30.95％;平均粒度为15.555 μm,适合采用精细还原技术予以还原.实验室条件下利用纯H2对烘干后的粉尘还原结果表明：还原后残余物金属化率80％以上,脱锌率88％以上;最佳实验条件：还原温度980℃,还原时间4h,金属化率可达92.01％,脱锌率可达99.61％.还原后物料不发生烧结,且残余物与挥发产物都可再次利用,为高炉粉尘再资源化提供一条解决途径.

Experimental Research on the Fine Reduction of Iron and Zinc in BF Dust

Some tests such XRF analysis, XRD analysis, chemical analysis, particle size measurement are carried on the No. 2 and 3 BF dusts of some iron steel group Co., the result is that： the average content of Zn is 3.64%, content of TFe is 30.95%, average particle size is 15.555 p.m. So the dust is suitable to be reduced by the fine reduction technology. Under laboratory conditions, pure Hz is used to reduce the BF dust. The results show that the metallization ratio is over 80%, the de-zincing rate is over 88%. The optimum conditions for the reduction is at reduction temperature of 980 ~C, reduction time of 4h, the metallization rate can reach 92.01%, and de-zincing rate can reach 99.61%. The material does not occur sintering after reduction and the residue and volatile products can be re- used again which can provide a way to solve for the blast furnace dust recycling.