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Risk Factors of Vapor Explosion of Molten Slag in Slag Yard for Steelworks

Author

Listed:
  • Young-Jae Cho

    (Disaster Prevention Center, POSCO, Republic of Korea)

  • Woojung Park
  • Hong-Sik Yun

    (Department of Civil & Environmental Engineering, Worcester Polytechnic Institute (WPI), United States)

  • Hyoung-Uk Yoon

    (Interdisciplinary Program in Crisis, Disaster and Risk Management, Sungkyunkwan University, Republic of Korea)

  • Sungyool Bong

    (Department of Mechanical Engineering, Worcester Polytechnic Institute (WPI), United States)

Abstract

The risk of vapor explosions has always existed in steelworks that deal with a large amount of high-temperature molten slag. Previous studies on vapor explosions caused by the direct contact of high-temperature molten slag with cooling water were mainly focused on nuclear power plants, whereas there is hardly any research on vapor explosions concerning molten slag in steelworks. Therefore, there is a necessity to understand the causes of vapor explosions occurring during the work process at slag yards. This study analyzed risk factors of potential vapor explosions during the work process at slag yards in steelworks and conducted a small-scale experiment based on field conditions. The experiment found the risk factors that cause vapor explosions at the cooling stage and loading stages of the process and found that spontaneous vapor explosions occurred depending on the temperature of cooling water for molten slag and the contained salinity. Thus, it was confirmed that the significant causes of vapor explosions in the steel industry were the salinity of the cooling water concentrated by seawater desalination and high-water temperature at 50°C caused by the circulation structure of cooling water.

Suggested Citation

  • Young-Jae Cho & Woojung Park & Hong-Sik Yun & Hyoung-Uk Yoon & Sungyool Bong, 2020. "Risk Factors of Vapor Explosion of Molten Slag in Slag Yard for Steelworks," International Journal of Environmental Sciences & Natural Resources, Juniper Publishers Inc., vol. 24(5), pages 167-175, June.
    • Handle: RePEc:adp:ijesnr:v:24:y:2020:i:5:p:167-175
    DOI: 10.19080/IJESNR.2020.24.556148
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    Keywords

    earth and environment journals; environment journals; open access environment journals; peer reviewed environmental journals; open access; juniper publishers; ournal of Environmental Sciences; juniper publishers journals ; juniper publishers reivew;
    All these keywords.

    JEL classification:

    • R00 - Urban, Rural, Regional, Real Estate, and Transportation Economics - - General - - - General
    • Z0 - Other Special Topics - - General

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