Molten Slag Bath Reduction: Carbon-Thermal Reduction of Blast Furnace Dust in Molten Blast Furnace Slag

International Conference on Materials Sciences and Nanomaterials

材料科学;物理学

Yin, X.^1,2 ; Zhang, C.M.^1,2 ; Cai, Y.H.^1,3 ; Zhao, C.M.^1,2 ; Yang, J.^1 ; Li, B.Y.^1

University of Science and Technology Liaoning, Anshan, Liaoning

114051, China^1

Key Laboratory of Chemical Metallurgy Engineering of Liaoning Province, Anshan, Liaoning

114051, China^2

Pangang Group Chengdu Iron and Steel Co. Ltd., Panzhihua, Sichuan

617000, China^3

关键词: Carbon-thermal reduction;    Dry processing;    Iron-based;    Metal particle;    Mineral phasis;    Molten Slag;    Reduction products;    Self-reduction;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/230/1/012027/pdf
DOI  :  10.1088/1757-899X/230/1/012027

学科分类：材料科学（综合）

来源: IOP

【 摘 要 】

By adding BF dust into molten BF slag, it was conducted to explore the feasibility of carbon-thermal reduction of BF dust in molten BF slag bath. The experimental results indicate that, BF dust can achieve self-reduction in the bath. It is convenient for the reduction products that are iron-based metal particles separating from slag. Besides, the reduction of BF dust is endothermic. When the mass ratio between BF slag and BF dust is 10:1, the temperature of BF slag after reduction can meet the requirement of dry processing treatment. According to the comparison by X-ray diffraction, the main mineral phases of BF slag are relatively stable before and after reduction. Undoubtedly, it is a novel method to cope with the metallurgical solid waste in molten BF slag bath.