Steelmaking Mechanisms for a Tatara Furnace and New Ironmaking

Tatara 炉的炼钢机制和新型炼铁技术

• 批准号: 09450277
• 负责人: NAGATA Kazuhiro
• 金额: $ 8.32万
• 依托单位: Tokyo Institute of Technology
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 1997
• 资助国家: 日本
• 起止时间: 1997 至 1998
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-09450277/
• 关键词: Tatara; iron sand; reaction mechanisms; steelmaking; new ironmaking; 炉内反応; 製錬; ケラ; ノロ

The mechanisms of "Tatara Steelmaking" which was a Japanese traditional ironmaking process has been investigated and studied for a new ironmaking process. (1) The compact "Tatara Furnaces" for making steel blooms or liquid pig iron was constructed and (2) 14 runs were carried out. (3) Temperature and oxygen potential were monitored during ironmaking and steelmaking by thermocouole and oxygen sensor. Also, the composition of steels, pig irons and slags were chemically analyzed. (4) The conventional "Tatara" which is operated 4 times in winter season has been studied on its operation way. (5) From above studies, the following results were obtained; The characteristics of "Tatara" steelmaking is the operation at low temperature of about 1350℃ and high oxygen potential of about 1x10^<-12>atm under rapid heating and reaction. The carbon contents in steel bloom and pig iron are about 1.5% and about 3.5%, respectively and the silicon content is almost trace. This indicates that the ironmaking reaction in "Tatara" is not in thermodynamic equilibrium. (6) Then, for developing a new ironmaking process, a pellet composed of iron ore and coal was examined for producing liquid pig iron at 1350℃ during 8 minutes under rapid heating and reaction.

对日本传统炼铁工艺“多田拉炼钢”的机理进行了研究，提出了一种新的炼铁工艺。(1)建造了用于生产大方坯或液态生铁的紧凑型“Tatara炉”，（2）进行了14次运行。(3)采用热电偶和氧传感器对炼铁、炼钢过程中的温度和氧势进行了监测。此外，还对钢、生铁和炉渣的成分进行了化学分析。(4)对冬季运行4次的常规“Tatara”的运行方式进行了研究。(5)通过以上研究，得出以下结论：“多田”炼钢的特点是在1350℃左右的低温和1 × 10 ~（-4）atm左右的高氧势<-12>下快速加热反应。大方坯和生铁中的碳含量分别约为1.5%和3.5%，硅含量几乎为微量。这表明“Tatara”的炼铁反应没有达到热力学平衡。(6)然后，为了开发新的炼铁工艺，进行了由铁矿石和煤组成的球团在1350℃下快速加热反应8 min制取液态生铁的试验。

项目成果

たたら製鉄における銑(ズク)生成機構

塔塔拉炼铁中的生铁生成机制

• 发表时间: 1999
• 作者: T. Suzuki;K. Nagata;永田和宏;K. Nagata;永田和宏;K. Nagata;永田和宏
• 通讯作者: 永田和宏

永田和宏: "もののけ姫に見る製鐵の謎" Boundary. Vol.13,No.11. 28-31 (1997)

Kazuhiro Nagata：“《幽灵公主》中的钢铁制造之谜”，第 13 卷，第 11 期（1997 年）。

永田和宏: "小型たたら炉による鉄(ズク)生成機構" 材料とプロセス. Vol.12,No.4. (1999)

Kazuhiro Nagata：“使用小型塔塔拉炉生产铁的机制”材料和工艺，第 12 卷，第 4 期（1999 年）。

Steelmaking Mechanisms for a Modified Tatara Furnace

改良 Tatara 炉的炼钢机制

• 发表时间: 1998
• 期刊: Tetsu-to-Hagane vol. 84, No. 10
• 作者: T. Suzuki;K. Nagata;永田和宏;K. Nagata
• 通讯作者: K. Nagata

永田和宏: "熱力学的に見た製鉄の歴史" Inorganic Materials. Vol.4,No.1. 575-585 (1997)

Kazuhiro Nagata：“从热力学角度看钢铁制造史”《无机材料》第 4 卷，第 575-585 期（1997 年）。