| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.8 ( September 1983 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Production of Stainless Steel by Top-and-Bottom-Blown Converter Naoshi Otani, Masaru Shibata, Ryuichi Asaho, Shunji Hamada, Motoyasu Yaji, Yoshiei Kato |
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Synopsis : At Chiba Works, an 80 t new UHP melting furnace (MF) was erected and the existing LD converter was converted into a top-and-bottom-blown converter (K-BOP) at its No.1 Steelmaking Shop. This was in line with a stainless steelmaking integration program modified from the former setup involving two steel works of Nishinomiya and Chiba. An entirely new process came on stream in March 1981 for the bilateral production of carbon steel and stainless steel by K-BOP and MF - K-BOP. Furthermore, equipment for hot metal treatment was installed to supply dephosphorized hot metal instead of iron scrap in MF practice. Owing to this change, a significant increase in productivity and cost reduction were achieved. Studies on the reaction model and standardization regarding decarburizing practice and metallurgical behavior in reduction period are also presented. |
| TextiPDF: 9p./360kbj |