Abstract
Blast furnace is a countercurrent reactor. The gas rises from the lower part and passes through the charge layers. It interacts with the burden descending from the upper part to complete the smelting process of heating, melting, reducing and carburizing. Smooth burden descend and reasonable gas distribution are essential for stable blast furnace operation. The function of the burden distribution is to change the distribution of gas flow and affect the shape of the cohesive zone through different charging methods. The method of burden distribution with two bells is monotonous. The possibility to change the distribution of burden is limited, and it is quite inconvenient to regulate the gas flow. However, the bell-less top burden distribution method is so flexible that burden can be distributed to any position of the throat. Therefore, it is relatively convenient to regulate the distribution of the gas flow in blast furnace.
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