1997 Fiscal Year Final Research Report Summary
DEVELOPMENT OF HIGH EFFICIENT SYNTHESIS PROCESS OF IRON CARBIDES IN A FLUIDIZED BED
| Project/Area Number |
07555229
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| Research Category |
Grant-in-Aid for Scientific Research (A)
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| Allocation Type | Single-year Grants |
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| Section | 展開研究 |
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| Research Field |
Metal making engineering
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| Research Institution | NAGOYA INSTITUTE OF TECHNOLOGY |
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Principal Investigator |
IGUCHI Yoshiaki NAGOYA INSTITUTE OF TECHNOLOGY,Faculty of Engineering, PROFESSOR, 工学部, 教授 (00023268)
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| Co-Investigator(Kenkyū-buntansha) |
HIDA Yukihiro NIPPON STEEL CORPORATION,Technical Development Bureau, CHIEF RESEARCHER, 主幹研究員
HAYASHI Shoji NAGOYA INSTITUTE OF TECHNOLOGY,Faculty of Engineering, ASSOCIATE PROFESSOR, 工学部, 助教授 (40024351)
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| Project Period (FY) |
1995 – 1997
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| Keywords | IRON CARBIDES / FLUIDIZED BED / IRON SCRAP / MELTING / NEW IRON SOURCE / ELECTRIC ARCFURNACE |
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| Research Abstract |
Iron carbide is expected to be utilized as a new iron source alternative to iron scrap for steelmaking, especially using an electric arc furnace. Objectives of this research are to produce high quality iron carbides in a fluidized bed and examine their melting behavior injected into molten steel, in order to make clear a feasibility for them to be available for steelmaking in the near future. The following results were derived during three years.
At I 995, a fluidized bed (62mm inner dia) was newly constructed to produce iron carbides (Fe3C, 6.7mass%, diameter : 0.1-1 mm). Some preliminary production tests were carried out by reacting iron ores with our specified gas around 8000C on the basis of a new process concept.
At 1996 and 1997, much high quality iron carbide was successfully produced by the same manner in the fluidized bed. The melting tests were performed by blowing the iron carbide with Ar gas to the surface of molten steel through a lance in a 50kg induction furnace. Mass and heat balances were evaluated by measuring the variation of temperature and contents of species in melt and exit gas. The carbides were proved to be dissolved into melt without any problems. Their melting heats tended to decrease with higher carbidization. Also, nitrogen removal in melt was confirmed as expected.
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