The Carbon Cost of Slag Production in the Blast Furnace: A Scientific Approach

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• 作者：Karl Buttiens ; Joel Leroy ; Patrick Negro…
• 关键词：Blast Furnace ; Hot Metal ; Benchmarking ; Slag allocation ; Carbon efficiency ; CO2 emissions ; Granulated blast furnace slag ; Life cycle analysis
• 刊名：Journal of Sustainable Metallurgy
• 出版年：2016
• 出版时间：March 2016
• 年：2016
• 卷：2
• 期：1
• 页码：62-72
• 全文大小：670 KB
• 参考文献：1.Burtaux M, Haut Fourneau, Exploitation, 2.2 Modèle mathématique de l’IRSID: le MMHF, Techniques de l’Ingénieur, M 7 411
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• 作者单位：Karl Buttiens (1)
  Joel Leroy (1)
  Patrick Negro (1)
  Jean-Sébastien Thomas (2)
  Kyle Edwards (1)
  Yann De Lassat (3)
  
  1. ArcelorMittal Group CTO, Luxembourg, Luxembourg
  2. ArcelorMittal Maizières Research, Maizières-lès-Metz, France
  3. Iron Making Energy Consultant, Metz, France
  
• 刊物类别：Metallic Materials; Sustainable Development; Industrial Chemistry/Chemical Engineering;
• 刊物主题：Metallic Materials; Sustainable Development; Industrial Chemistry/Chemical Engineering;
• 出版者：Springer International Publishing
• ISSN：2199-3831

文摘

The quality of raw materials (iron ore, coal, and coke) has a clear impact on the carbon emissions of the hot metal production in steel making. So far, very little work has been done to measure and quantify this impact. Yet for benchmarking, technology choice and general carbon optimization are important elements. The total slag production of a blast furnace gives an accurate and relevant measure of the raw materials quality and is the main variable on which plant operators have no control. To quantify the impact of a varying amount of slag produced together with hot metal, a method is developed based on a differential approach. For a number of different blast furnaces with different operating points and burden compositions, the carbon footprint or carbon cost of slag production is determined using this method and a robust value for the carbon cost of the slag is derived. This value can also be used in the comparison of the carbon cost of different steel making routes or in life cycle assessments for steel and slag applications.