MELTING BEHA VIOR OF IRON CARBIDES INJECTED INTO MOLTEN STEEL

碳化铁注入钢水中的熔化行为

• 批准号: 08650869
• 负责人: HAYASHI Shoji
• 金额: $ 1.41万
• 依托单位: NAGOYA INSTITUTE OF TECHNOLOGY
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (C)
• 财政年份: 1996
• 资助国家: 日本
• 起止时间: 1996 至 1997
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-08650869/
• 关键词: IRON CARBIDES; IRON SCRAP; MELTING; NEW IRON SOURCE; ELECTRIC ARCFURNACE

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 examine a melting behavior of iron carbide injected into molten steel in order to make clear a feasibility for it to be available for steelmaking in the near future. The following results were derived in the fiscal years 1996 and 1997.(1)High grade iron carbides (Fe_3C, 6.7mass%, diameter : 0.1-1 nun) were produced by reacting iron ores with our specified gas in a fluidized bed based on a new process concept.(2)Their 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.(3)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.

碳化铁有望作为一种新的铁源替代废铁用于炼钢，特别是在电弧炉中使用。本研究的目的是研究注入钢液中的碳化铁的熔化行为，以明确其在不久的将来可用于炼钢的可行性。下列结果是1996和1997财政年度得出的。(1)采用新工艺概念，将铁矿与指定气体在流化床内反应制备出高品位碳化铁（Fe_3C，质量% 6.7，直径0.1-1尼米）。(2)在50kg的感应炉中，通过喷枪将含氩气的碳化铁吹至钢液表面，进行了熔炼试验。通过测量熔体和出口气体中温度和物质含量的变化来评估质量和热平衡。(3)证明碳化物在熔体中溶解没有任何问题。它们的熔化热随渗碳程度的升高而降低。同时，熔体脱氮效果与预期一致。

项目成果

林 昭二 ら: "鉄鉱石からの炭化鉄合成(炭化鉄製造-1)" 材料とプロセス. 8. 110 (1995)

Shoji Hayashi 等人：“从铁矿石中合成碳化铁（碳化铁生产-1）”材料和工艺。 8. 110 (1995)

S.Hayashi etal.: "Synthesis of Iron Carbide by Reaction of Iron Ores with H_2-CO Gas Mixtures Bearing Traces of Sulfur" ISIJ International. 37巻・1号. 16-21 (1997)

S. Hayashi 等人：“通过铁矿石与含有微量硫的 H_2-CO 气体混合物的反应合成碳化铁”，ISIJ International 第 37 卷，第 1. 16-21 期（1997 年）。

林 昭二 ら: "流動層による鉄鉱石からの炭化鉄合成(炭化鉄製造-2)" 材料とプロセス. 8. 111 (1995)

Shoji Hayashi 等人：“通过流化床从铁矿石合成碳化铁（碳化铁生产-2）”材料和工艺。

S.Hayashi etal.: "Iron Carbide Synthesis by Reaction of Iron Ore with H_2-CH_4 Gas Mixtures Containing Traces of Sulfur" ISIJ International. 37巻・4号. 345-349 (1997)

S. Hayashi 等人：“铁矿石与含有痕量硫的 H_2-CH_4 气体混合物反应合成碳化铁”ISIJ International 第 37 卷，第 4 期。345-349 (1997)

Y.Iguchi, S.Hayashi, A.Hattori, and H.Mori: "Production and Use of High Grade Iron Carbides" 1998 Process Technology Conference Proceedings. ISS,Nov 15-18. 649-656 (1998)

Y.Iguchi、S.Hayashi、A.Hattori 和 H.Mori：“高级碳化铁的生产和使用”1998 年工艺技术会议论文集。