| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.8 ( September 1983 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| A New Burden Distribution Control by the
Bell Movable Armour Equipment Toshiro Sawada, Ken-ichi Kaneko, Kazuo Okumura, Motozo Yasuno, Mitsuo Saino, Hisao Hamada |
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Synopsis : The purpose of controlling technique on the gas distribution for a stable furnace condition is to maintain an adequate peripheral gas flow and a sharp center gas flow, for preventing a scaffold (ansatz) at wall side and for improvement in the discharge of Zn from the furnace top. The gas distribution of a furnace equipped with a bell-armour in comparison with that of the bell-less top has a tendency to be flat owing to the difference in size segregation behavior in the radial direction, thus posing a problem in micro-control of burden distribution. The authors have recently developed a new method of burden distribution control by the movable armour and introduced it to No.5 BF. This method is aimed at promoting large particle size segregation at the center and wall side by controlling the bell stroke and speed. |
| TextiPDF: 9p./335kbj |