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 language | English |
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Pages (from-to) | 1401-1408 |
Number of pages | 8 |
Journal | Isij International |
Volume | 60 |
Issue number | 7 |
DOIs | |
Publication status | Published - 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