Preparation of the Iron Oxide Red from the Converter Dust by the Magnetic Separation and Roasting Process

3rd International Conference on Advances in Environment Research

生态环境科学;地球科学

Guo, Z.J.^1 ; Li, S.Q.^1 ; Yang, C.Q.^1

School of Metallurgical and Ecological Engineering, University of Science and Technology Beijing, Beijing

100083, China^1

关键词: Converter dust;    High gradient magnetic separation;    Magnetic medium;    Magnetic-field intensity;    Optimum conditions;    Roasting process;    X ray fluorescence;    X-ray diffraction method;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/68/1/012014/pdf
DOI  :  10.1088/1755-1315/68/1/012014

学科分类：环境科学（综合）

来源: IOP

【 摘 要 】

Preparation of iron oxide red (α-Fe2O3) from the converter dust by the superconductivity high gradient magnetic separation (S-HGMS) and roasting process was investigated in the paper. The basic properties of the dust were studied by the X Ray Fluorescence, the chemical analysis and the X Ray Diffraction methods. The results showed that the raw dust mainly contained elements of Feb'Ob'Sib'Ca, the iron content of the raw dust was 61.80%, and there were ferrous phases of Fe3O4, α-Fe2O3, Fe2(SiO4) and CaFe(Si2O6) in the raw dust. Under the optimum conditions of magnetic field intensity of 1.8T, the dispersion agent of 30mg/L and velocity of 500mL/min, the powders absorbed by the magnetic medium mainly contained Fe3O4and α-Fe2O3, and the iron content of powders absorbed was up to 65.90%. The Fe2+content of the powders absorbed under the optimum magnetic conditions dropped to 0.25% from 19.10% after roasting of fifty minutes, and the iron content of powders absorbed under the optimum magnetic conditions fell to 64% due to oxidation, and the Fe3O4was removed. Finally the α-Fe2O3content was up to 91.07% in the iron oxide red.