Practice of Processing BF Wall Accretion by Lowering Charge Level in Shiheng Special Steel’s No.1 1 050 m3 BF
QIAN Yong
YANG Yun
CHEN Dejian
Abstract：By means of lowering charge level in No.1 1 050 m3 BF the wall accretion was treated in Shiheng Special Steel. In reducing charge level procedure, by adjusting the coke load, controlling air quantity and reasonable technological parameters and optimizing water spraying into the top for reducing gas knock, full gas recovery was achieved. The process is safety, smooth and environmental protection, achieving the desired effect. At the same time, in order to restore the charge level, the mode of plugging tuyeres uniformly was adopted for improving the blast momentum to blow through center and the distributing matrix giving consideration to edge gas flow was used. Stable charge level and the funnel were formed. The charge level was increased. The collocation of charge level depth, charge angle and raw material structure is reasonable and the time improving charge level was shortened. It can eliminat the damage to the blast furnace of the long low charge level.
Keywords：blast furnaceBF wall accretionlowering charge levelgas recovery
Publication Date：2015-01-01
Online Publishing Date：2026-05-22(First online date of this platform, not the publication date of the document)
Pages：4( 4-7 )