Influence of gasification reaction of coke on sliding and dynamic contact angles of droplets in a blast furnace

Shinsuke Ogyu, Lichun Zheng, Xu Gao, Shigeru Ueda, Sohei Sukenaga, Shin Ya Kitamura

Research output: Contribution to journalArticlepeer-review

Abstract

To enhance the descent of droplets in the coke bed of a blast furnace, the sliding angle of the water droplet and the advancing and receding contact angles at the time of sliding were measured. Coke used as a reducing agent in a blast furnace was employed as a substrate. Because the shape of the coke surface varies with the gasification reaction with CO2, the coke substrate was treated with heat (1 273 K) in a CO/CO2 atmosphere. Irregularities of approximately several micrometers were formed on the coke surface by the gasification reaction, and the sliding angle of the droplet decreased.

Original languageEnglish
Pages (from-to)1401-1408
Number of pages8
JournalIsij International
Volume60
Issue number7
DOIs
Publication statusPublished - 2020

Keywords

  • Blast furnace
  • Coke
  • Dripping zone
  • Droplet motion
  • Dynamic contact angle
  • Surface roughness

ASJC Scopus subject areas

  • Mechanics of Materials
  • Mechanical Engineering
  • Metals and Alloys
  • Materials Chemistry

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