Abstract
Adjusting Burden distribution is one of the most important and effective operations. In terms of fixed equipment, charging materials and blowing regulation, the inner gas flow utilization could be improved by adjusting the burden distribution to achieve a well-state skull, good blast furnace (BF) performance and long campaign life. The No.1 BF (the effective volume is 3200 m3) was equipped with a bell-less top, cast iron cooling staves in the hearth and copper cooling plates from the belly to the lower shaft respectively. Although the satisfied indexes have been reached since blow on, the fluctuation caused by the skull dropping off happened several times. This resulted in the lining temperatures varying greatly, the coke ratio increasing and the product quality deteriorating. It is considered the main reason for the operation regulation not matching the varied conditions with deteriorating materials and continuous lower temperatures of hot metal etc. A type of effective charging mode is introduced in the paper to complete the BF long-term stable running and long operation.
Published Version
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