Production Process of Zinc Metal from Electric Arc Furnace Dust

利用电弧炉烟尘生产金属锌工艺

• 批准号: 22656171
• 负责人: NAGASAKA Tetsuya
• 金额: $ 2.28万
• 依托单位: Tohoku University
• 依托单位国家: 日本
• 项目类别: Grant-in-Aid for Challenging Exploratory Research
• 财政年份: 2010
• 资助国家: 日本
• 起止时间: 2010 至 2011
• 项目状态: 已结题
• 来源: https://kaken.nii.ac.jp/grant/KAKENHI-PROJECT-22656171/
• 关键词: 電気炉ダスト; 亜鉛; リサイクル; Waeltz法; 廃棄物処理; 電気炉ダス; Waelz法; エコプロセス; 鉄還元; レアメタル; 磁気分離

Reduction of ZnO in EAF dust after the treatment with CaO by carbon or metallic iron was conducted as an optional technology for metallic Zn recovery from the dust. The specimens were six gram mixture of the reaction product from lime addition process and carbon at ZnO/C or ZnO/Fe=1/1 in molar ratio. This mixture was heated for given period at 1000 to 1100°C in Ar flow or vacuum. After heating, the condensed matters deposited on the cooling part in the apparatus was collected and analyzed by XRD and ICP. The experimental result of ZnO reduction process using the reaction products from lime addition process showed that pure metallic Zn was successfully obtained in the present work. In the Waelz process, the product is crude ZnO containing significant amount of halogens while the CaO treated dust is basically halogen-free. It may be possible to collect liquid pure zinc by the reduction of CaO treated dust with iron if the temperature of cooling part is precisely controlled.

用碳或金属铁处理 CaO 后还原电弧炉粉尘中的 ZnO，作为从粉尘中回收金属锌的可选技术，样品是 ZnO/C 下石灰添加过程中的反应产物和碳的 6 克混合物。或ZnO/Fe摩尔比为1/1 将该混合物在Ar流或真空中在1000至1100℃下加热指定时间。加热后，冷凝物沉积在冷却部分上。收集并通过 XRD 和 ICP 分析了使用石灰添加过程中的反应产物还原 ZnO 的实验结果表明，在 Waelz 工艺中成功获得了纯金属 Zn，产物为粗 ZnO。含有大量的卤素，而CaO处理的粉尘基本上不含卤素。如果精确控制冷却部分的温度，则可以通过用铁还原CaO处理的粉尘来收集液体纯锌。

项目成果

Development of Dust-making Technology as ISIJ Innovative Program for Advanced Technology

作为 ISIJ 先进技术创新计划开发除尘技术

• 发表时间: 2010
• 作者: R. Chairaksa;K. Matsubae and T. Nagasaka;Tetsuya Nagasaka
• 通讯作者: Tetsuya Nagasaka

New Zinc Recovery Process from EAF Dust by CaO Addition

通过添加 CaO 从电炉粉尘中回收锌的新工艺

• 发表时间: 2012
• 作者: R. Chairaksa;K. Matsubae and T. Nagasaka
• 通讯作者: K. Matsubae and T. Nagasaka

Present Status of EAF Dust Treatment in Eastern Asia

东亚地区电弧炉粉尘处理现状

• 发表时间: 2011
• 作者: R. Chairaksa;K. Matsubae and T. Nagasaka;Tetsuya Nagasaka
• 通讯作者: Tetsuya Nagasaka

Evaporation Behavior of Components from CaO Treated EAF Dust under Wet Air Stream

湿气流下 CaO 处理电弧炉粉尘成分的蒸发行为

• 发表时间: 2010
• 作者: R. Chairaksa;Y. Inoue;S. Kashiwakura;K. Matsubae and T. Nagasaka
• 通讯作者: K. Matsubae and T. Nagasaka

Present Status of EAF Dust Treatment in Eastern Asia (Keynote Lecture)

东亚地区电弧炉粉尘处理现状（主题演讲）

• 发表时间: 2011
• 期刊: Proceedings of the 7th Japan-Korea Workshop on Science and Technology of Ironmaking and Steelmaking
• 作者: K. Matsubae;K. Nakajima;H.-W. Ma;Y.-S. Jeong;J.-J. Pak and T. Nagasaka
• 通讯作者: J.-J. Pak and T. Nagasaka