| ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ KAWASAKI STEEL TECHNICAL REPORT No.15 ( October 1986 ) ‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘‘ |
| Production of High Carbon Steel Using Pretreated Hot Metal in Top-and-Bottom-Blown Converter Hiroshi Nomura, Hajime Bada, Keizo Taoka, Sumio Yamada, Ryuichi Asaho, Kanji Emoto |
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Synopsis : Approximately 90% of high carbon steel is produced by a process newly developed at No.1 Steelmaking Shop of Chiba Works. This new process, which uses dephosphorized hot metal and top-and bottom-blown converter (K-BOP), can achieve the maximum benefits of compound metallurgical techniques. Its features are following. (1) Heat compensation by coke charging through application of desulfurization in gas phase to prevent sulfur pick-up (2) Reduction of manganese ore by carbon in low oxygen potential (3) Desulfurization, deoxidization and chemical adjustment by reduction refining. Significant benefits, such as decreases in flux and alloy consumption, lowering of tapping temperatures, and improvement on quality including cleanliness are achieved by this newly-developed process. |
| TextiPDF: 7p./313kbj |