Stainless Steelmaking by the LD-AOD Process
1981 Volume 67 Issue 14 Pages 2145-2151
Details
1981 Volume 67 Issue 14 Pages 2145-2151
Utilization of molten ferroalloys in making stainless steels was succeeded in the Hachinohe Works of Pacific Metals Co., LTD. (PAMCO), and LD-AOD process which is one of the P.H.A. process (PAMCO-HOT-ALLOY process) was developed.
The trial heats proved that the LD-AOD process was able to apply to production runs with no difficulties. The characteristic features of the process are as follows;
1) An enormous increase in chromium and tapping yield can be obtained. Operation time is also shortened considerably.
2) The establishment of process to remove the sulfur from the melt of high sulfur content in the AOD have resulted in the elimination of crude ferronickel's desulfurization step in the alloy section.
3) Total energy consumption can be saved to a great extent.
4) High-purity, high-quality stainless steel can be produced constantly.
