Study on volatilization behaviour of BOF converter slag containing CaCl2

IF 1.7 3区 材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING
Ziwen Yan, Zhiyin Deng, Miao‐yong Zhu
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引用次数: 0

Abstract

ABSTRACT The volatilization behaviour of CaCl2-containing basic oxygen furnace (BOF) slags was investigated in laboratory at steelmaking temperature. During the melting process, the volatilization ratio was measured, and the volatile compounds were collected with some conductive tapes. Thermogravimetric analysis was conducted to clarify the volatilization of CaCl2-containing slags, and the volatilization ratio was also calculated by the thermodynamic software HSC. It was found that volatilization takes place in both CaCl2-containing and CaF2-containing BOF slags, but their influential mechanisms are different. FeCl2 is the main volatile compound in CaCl2-containing BOF slags. The increasing contents of CaCl2 and FeO in these slags are favourable for volatilization, while higher slag basicity plays the opposite role. In the case of CaF2-containing BOF slags, the volatilization compounds have little relation to the FeO content in the slags, and the volatilization ratio is smaller than that of CaCl2-containing BOF slag.
含CaCl2转炉转炉渣挥发特性的研究
在炼钢温度下,对含钙碱性氧炉(BOF)炉渣的挥发行为进行了室内研究。在熔融过程中,测量了挥发比,并用导电带收集了挥发性化合物。通过热重分析阐明了含cacl2渣的挥发性,并利用热力学软件HSC计算了其挥发比。结果表明,含cacl2和含caf2的转炉炉渣均发生挥发,但其影响机理不同。FeCl2是含cacl2转炉炉渣的主要挥发性化合物。渣中CaCl2和FeO含量的增加有利于挥发,而渣碱度的提高则相反。在含caf2转炉渣中,挥发化合物与渣中FeO含量关系不大,挥发比小于含cacl2转炉渣。
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来源期刊
Ironmaking & Steelmaking
Ironmaking & Steelmaking 工程技术-冶金工程
CiteScore
3.70
自引率
9.50%
发文量
125
审稿时长
2.9 months
期刊介绍: Ironmaking & Steelmaking: Processes, Products and Applications monitors international technological advances in the industry with a strong element of engineering and product related material. First class refereed papers from the international iron and steel community cover all stages of the process, from ironmaking and its attendant technologies, through casting and steelmaking, to rolling, forming and delivery of the product, including monitoring, quality assurance and environmental issues. The journal also carries research profiles, features on technological and industry developments and expert reviews on major conferences.
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