抄録
An innovative technique has been sought for slag formation control in LD converter in order not only to obtain a perfect simultaneous hitting of aimed carbon content and bath temperature but also to control phosphorus content at turndown.
The acceleration of oxygen lance vibration is found to be correlated with slag foaming height in the vessel.
Through the introduction of continuous monitoring of the acceleration into existing programed and dynamic control subsystems, a fully automatic blowing system has been established.
Due to this innovation, significant benefits such as improvement in hitting ratio and yield of steel, reduction in reblowing ratio and longer refractory life have been achieved.
