Abstract
A computer control technique for LD converter process with pretreated hot metal has been developed and practicized at Keihin Works. A new ladle dephosphorization plant has started its operation in 1986 and consequently, less slag blowing by LD converter has been put into operation. The main feature of less slag blowing is the direct reduction of manganese ore, which realize high recovery of manganese and reduction of ferromanganese alloy consumption. Both static and dynamic control model have been reconstructed to attain high manganese content and stable yield by metallurgical reaction background altogether with operational data analysis. The end point estimation model by sublance measurement has been also developed. The computer control technique has greatly contributed to realize high hitting ratio, high [Mn] at end point, stable manganese yield, less consumption of ferro-alloy and total cost reduction.
Sign-in/Register to access full text options 
Talk to us
Join us for a 30 min session where you can share your feedback and ask us any queries you have
Schedule a call
