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.

研究了电弧炉烟尘经CaO处理后，用碳或金属铁还原其中的ZnO，作为从烟尘中回收金属锌的可选工艺。试样是来自石灰添加过程的反应产物和碳以ZnO/C或ZnO/Fe=1/1摩尔比的6克混合物。将该混合物在Ar流或真空中在1000至1100°C下加热给定时间。在加热之后，收集沉积在装置中的冷却部分上的冷凝物，并通过XRD和ICP进行分析。用石灰还原氧化锌的实验结果表明，在本工作中成功地获得了纯金属锌。在Waelz法中，产物是含有大量卤素的粗ZnO，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，则有可能通过用铁还原CaO处理过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