Advance and Prospect of Technologies on Converter

Shima, Takatsugu

doi:10.2355/tetsutohagane1955.76.11_1765

Cited by 6 publications

(1 citation statement)

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“…The limitation of this process had gradually become understood, and the necessity of additional stirring had been recognised. The situation of each company in this period is introduced by Tetsu-to-Hagané in 1990 (Shima 1990). Some disadvantages of the bottom-blowing converter are the short life of the refractory around the tuyeres, hydrogen pickup from the coolant gas, and difficulty of catch-carbon operation for high-carbon steel.…”

Section: Combined Blowing and Hot Metal Dephosphorisationmentioning

confidence: 99%

History and latest trends in converter practice for steelmaking in Japan

Kitamura

Naito

Okuyama

2018

Mineral Processing and Extractive Metallurgy

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In this paper, the history and latest trends in the converter-based steelmaking process in Japan were summarised. After World War II, Japanese steel companies introduced the LD converter, and various original technologies have been developed to increase productivity, reduce the production cost, and improve the quality of steel. About 20 years after the introduction, the necessity of the additional stirring was recognised and various types of top-and-bottomblowing converters were developed. By using this process, hot-metal dephosphorisation and smelting reduction were developed. In addition, fundamental research related to the converter technology is shown. Japanese steelmaking technology has been developed by the collaboration of university and industry. In industry, each company has an R&D centre where the applied and practical research is conducted. The research in academia is concentrated on the fundamentals. Recently, ISIJ organised the research projects on 'multiphase slag refining' and 'enhancement of lime dissolution'.

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Section: Combined Blowing and Hot Metal Dephosphorisationmentioning

confidence: 99%