Hydrothermal treatment of electric arc furnace dust

被引:14
|
作者
Yu, Bing-Sheng [2 ]
Wang, Yuh-Ruey [1 ]
Chang, Tien-Chin [3 ]
机构
[1] Natl Taipei Univ Technol, Dept Mat & Mineral Resources Engn, Taipei 106, Taiwan
[2] Natl Taipei Univ Technol, Inst Mineral Resources Engn, Taipei 106, Taiwan
[3] Natl Taipei Univ Technol, Inst Environm Engn & Management, Taipei 106, Taiwan
关键词
Hydrothermal treatment; EAF dust; ZnO; Crystal morphology; ROD-LIKE; ZINC; MORPHOLOGY; RECOVERY; WHISKERS;
D O I
10.1016/j.jhazmat.2011.03.056
中图分类号
X [环境科学、安全科学];
学科分类号
08 ; 0830 ;
摘要
In this study, ZnO crystals were fabricated from electric arc furnace dust (EAFD) after alkaline leaching, purification and hydrothermal treatment. The effects of temperature, duration, pH, and solid/liquid ratio on ZnO crystal morphology and size were investigated. Results show a high reaction temperature capable of accelerating the dissolution of ZnO precursor, expediting the growth of 1D ZnO, and increasing the L/D ratio in the temperature range of 100-200 degrees C. ZnO crystals with high purity can also be obtained, using the one-step hydrothermal treatment with a baffle that depends on the different solubility of zincite and franklinite in the hydrothermal conditions. (C) 2011 Elsevier B.V. All rights reserved.
引用
收藏
页码:397 / 402
页数:6
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