论文部分内容阅读
对烘干后的电弧炉干粉尘进行基础特性研究,包括化学成分、XRD(X-ray diffraction)检测、粒度分布。根据铁氧化物、锌氧化物的还原热力学原理,提出了“电弧炉粉尘精细还原”的概念。探讨温度(910～1 010℃)和还原时间(2～4h)对电弧炉粉尘金属化率和脱锌率的影响,并利用SPSS(Statistical Product and Service Solutions)软件对实验结果进行方差分析和相关性分析结果表明,电弧炉粉尘TFe含量为47.26%,Zn含量为8.32%;在910～1010℃,使用纯H_2对电弧炉粉尘进行精细还原,能实现铁氧化物和锌氧化物分别向MFe和Zn的转变,金属化率和脱锌率分别达到95%、98%左右;同时电弧炉粉尘精细还原的产物未有烧结现象发生。
The basic characteristics of dried EAF dry dust were studied, including chemical composition, X-ray diffraction (XRD) and particle size distribution. According to the principle of reduction thermodynamics of iron oxides and zinc oxides, the concept of “fine reduction of electric arc furnace dust” was put forward. Effects of temperature (910 ~ 1 010 ℃) and reduction time (2 ~ 4h) on metallization and dezincification rate of EAF were investigated. The ANOVAs and correlations of the experimental results were analyzed by SPSS (Statistical Product and Service Solutions) The results of the analysis show that the content of TFe in arc furnace dust is 47.26% and the content of Zn is 8.32%. The fine reduction of arc furnace dust with pure H 2 at 910 ~ 1010 ℃ can effectively reduce the iron oxide and zinc oxide to MFe and Zn conversion, metallization rate and dezincification rate reached 95%, respectively, 98%; at the same time, the fine reduction of EAF dust did not occur sintering phenomenon.