Enhancement of refining efficiency due to fluid flow control of slag, metal and gas

通过炉渣、金属和气体的流体控制提高精炼效率

• 批准号: 23360330
• 负责人: IGUCHI Manabu
• 金额: $ 11.81万
• 依托单位: Osaka Electro-Communication University (2013)Hokkaido University (2011-2012)
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Scientific Research (B)
• 财政年份: 2011
• 资助国家: 日本
• 起止时间: 2011-04-01 至 2014-03-31
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-23360330/
• 关键词: 高温材料プロセス; 鉄鋼製錬; ガスインジェクション; スラグ; 気泡; 旋回噴流; 濡れ性; 鉄鋼プロセス; ３相界面; フルード数; 精錬プロセス; 吹き込み噴流; スロッシング; 溶融金属; 可視化; 数値シミュレーション

Molten iron can be produced in the blast furnace due to metallurgical reaction between iron ore and coke. Many kinds of impurities and inclusions however are contained in it. They must be removed by adding refining agents in the bath of reactors such as a converter. This process is called refining. The temperature of the bath is very high and, hence, mechanical agitation using an impeller cannot be applied because of severe erosion of the impeller. Gas injection method based on the gas-lift effect is therefore commonly used to agitate the bath. Enhancement of the refining efficiency is closely associated with control of the dynamic behaviors of bubbles, molten iron, and slag in the bath. Clarification of these behaviors were done on the basis of flow visualization using a high-speed camera and numerical simulation.

由于铁矿石和可乐之间的冶金反应，可以在喷速炉中生产熔融铁。然而，其中包含许多种类的杂质和夹杂物。必须通过在反应器（例如转换器）的浴缸中添加精炼剂来去除它们。这个过程称为精炼。浴缸的温度非常高，因此，由于叶轮严重侵蚀，无法使用叶轮的机械搅拌。因此，基于汽油升级效果的气体注入方法通常用于搅拌浴。提高精炼效率的增强与控制气泡，熔融铁和槽中的动态行为密切相关。这些行为的澄清是根据使用高速摄像头和数值模拟的流动可视化进行的。

项目成果

Dynamic Behavior of Low-Density Spheres Vertically Penetrating into a Water Bath

低密度球体垂直穿透水浴的动态行为

• 发表时间: 2012
• 作者: Yusuke SAKAI;Yoshiaki UEDA;Toshio ISHII;Manabu IGUCHI;Yusuke SAKAI
• 通讯作者: Yusuke SAKAI

斜めに水没する撥水性円柱によって形成されるキャビティ

斜浸式防水圆柱体形成的空腔

• 发表时间: 2011
• 作者: Ookubo;T.;Nishihama;S.;Yoshizuka;K.;H. Minakuchi;植田芳昭,井口学
• 通讯作者: 植田芳昭,井口学

各種攪拌法の特徴と効率改善

各种搅拌方式的特点及效率提升

• 发表时间: 2011
• 作者: 井口学;植田芳昭,西原一嘉
• 通讯作者: 植田芳昭,西原一嘉

Fabrication of Ni-Al alloy transpiration cooling device by powder-metallurgical microchanneling process

粉末冶金微通道工艺制造镍铝合金蒸发冷却装置

• 发表时间: 2011
• 期刊: J. JSEM
• 作者: Masutaka Omura;Tatsuya Ohmi;Takehiko Kumagai;and Manabu Iguchi
• 通讯作者: and Manabu Iguchi

Mixing time of a cylindrical bath agitated by gas injection through an off-centered L-shaped top lance

通过偏心 L 形顶喷枪注入气体搅拌圆柱形浴的混合时间

• 发表时间: 2012
• 期刊: J. JSEM
• 作者: 古渡貴也;長谷川裕樹;白木康弘;太田弘道;柴田浩幸;Norifumi Kochi and Manabu Iguchi
• 通讯作者: Norifumi Kochi and Manabu Iguchi