A Review on the Dissection of Quenched Blast Furnaces—Spanning from the Early 1950s to the 1970s
Abstract
:1. The Dissection of Quenched Blast Furnaces
2. U.S. Bureau of Mines Case (1959)
2.1. Background Information
2.2. Quenching Procedure
2.3. Details of the Findings
3. The Iron and Steel Institute of Japan (ISIJ) Studies (1970)
3.1. Background Information
3.2. Details of the Findings
- The top part with the layered ore and coke as charged.
- The lumpy zone (stack zone) where coke and ore particles make a stratified descent down the furnace.
- The cohesion zone where ore is softened, fused, and melted in accordance with the state of gas flow from the tuyeres.
- The active coke zone which is situated below the cohesion zone where droplets of iron ore and slag interact with the coke as they percolate down to the hearth.
- The stagnant coke zone (dead man) is right below the active coke zone between the tuyeres where the reaction does not occur. This conical mass acts to support the burden of the furnace and as a path for the droplets of metal and slag to trickle down to the hearth. The Japanese refer to this zone as the core.
- The combustion zone which is a zone where hot blasts from the tuyeres react with coke to generate the heat needed to melt the iron. The air blasts form cavities as a result of the swirling motion of the coke particles, producing raceways.
- The hearth which is composed of the slag layer on top of the metal layer, both filled with coke, which is coagulated near the bottom.
4. Conclusions
Conflicts of Interest
References
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Zhang, W. A Review on the Dissection of Quenched Blast Furnaces—Spanning from the Early 1950s to the 1970s. Processes 2016, 4, 36. https://doi.org/10.3390/pr4040036
Zhang W. A Review on the Dissection of Quenched Blast Furnaces—Spanning from the Early 1950s to the 1970s. Processes. 2016; 4(4):36. https://doi.org/10.3390/pr4040036
Chicago/Turabian StyleZhang, Wei. 2016. "A Review on the Dissection of Quenched Blast Furnaces—Spanning from the Early 1950s to the 1970s" Processes 4, no. 4: 36. https://doi.org/10.3390/pr4040036
APA StyleZhang, W. (2016). A Review on the Dissection of Quenched Blast Furnaces—Spanning from the Early 1950s to the 1970s. Processes, 4(4), 36. https://doi.org/10.3390/pr4040036