Investigating carbon type differentiation techniques for blast furnace dust

IF 1.7 3区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Ironmaking & Steelmaking Pub Date : 2022-10-30 DOI:10.1080/03019233.2022.2137911

John Lewis, H. Cockings, D. Stewart, James Russell, Matthew H. Thomas, M. Greenslade

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Abstract

ABSTRACT Coal char presence in blast furnace dust, indicates the inefficiency of combustion in the raceway. A retroactive approach has been applied by investigating the presence of carbon sources in blast furnace dust via carbon type differentiation methodologies. The current state of the art in carbon type differentiation for similar applications consists of thermogravimetric analysis, however this technique does not allow for samples to be analysed in line with the ever-changing conditions of the blast furnace. Here, the TGA method has been trialled for use with blast furnace dust, with improvements offered to the heating profile, allowing for faster analysis. Moreover, alternative techniques have been trialled, in combination with characterisation methods such as XRD, SEM/EDS, total carbon and ICP-OES. The ‘Winkler Method’ originally designed to quantify charcoal in soil sediment, has been successfully optimised for carbon type differentiation in blast furnace dust, showing good correlation with the original benchmark technique.

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高炉烟尘碳型鉴别技术研究

高炉烟尘中存在煤焦，表明滚道燃烧效率低下。通过碳类型区分方法研究高炉粉尘中碳源的存在，采用了追溯方法。用于类似应用的碳类型区分的当前技术状态包括热重分析，然而该技术不允许根据高炉不断变化的条件来分析样品。在这里，TGA方法已被试验用于高炉粉尘，并对加热曲线进行了改进，从而可以更快地进行分析。此外，还试验了替代技术，并结合XRD、SEM/EDS、总碳和ICP-OES等表征方法。“Winkler方法”最初设计用于量化土壤沉积物中的碳，现已成功地针对高炉粉尘中的碳类型差异进行了优化，显示出与原始基准技术的良好相关性。

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来源期刊

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.