探索磁性分离和重力度的效率,以在循环经济框架下对Pb-Zn炉渣进行价值化
Anja Terzić1, Jovica Stojanović2, Vladimir Jovanović2
1Institute for Testing of Materials, Bulevar Vojvode Mišića 43, 11000 Belgrade, Serbia.
Materials (Basel, Switzerland)
|August 29, 2024
概括
本研究提出了一种简单,环保的方法,利用重力度从- (Pb-Zn) 渣中回收贵金属. 这种方法提供了一个成本效益高的替代传统金工艺的废渣价值化过程.
科学领域:
- 金工程 金工程 金工程
- 材料科学 材料科学 材料科学
- 环境科学 环境科学
背景情况:
- - (Pb-Zn) 渣是一种含有大量有色金属 (Pb, Zn, Cu, Ag) 的有价值的二次原料.
- 提取这些金属的传统方法往往是商业上不可行的,因为它们被困在无形酸盐和玻璃相中.
- 现有的火力和水力金程序是复杂的,对环境有害的和昂贵的.
研究的目的:
- 开发和评估一种创新的,经济高效的,环保的工艺,用于提升Pb-Zn渣的价值.
- 使用物理分离技术从Pb-Zn渣中缩有价值的有色金属.
- 评估在建筑行业中再利用剩余的废渣组件的潜力.
主要方法:
- Pb-Zn渣经过了粉碎 (粉碎和研磨),随后进行了分离试验.
- 使用重力度 (威夫利摇摆表) 和磁性分离 (戴维斯分离器,磁盘分离器) 的方法.
- 进行了物理化学和矿物学分析,以表征废渣和分离的部分.
主要成果:
- 重力缩证明比磁性分离更有效地缩有色金属.
- 通过重力度方法获得了∆T分数 (缩的有色金属合金),其中包括12.99%的加工废渣.
- 从∆T分数中回收的金属包括5.28%的Pb,6.69%的Zn,0.58%的Cu和76.12ppm的Ag;尾矿 (∆L) 含有1.22%的Pb,6.05%的Zn,0.43%的Cu和15.26ppm的Ag.
结论:
- 与传统方法相比,拟议的简化方法为Pb-Zn渣价值化提供了一个更简单,更绿色和更经济的替代方案.
- 这种方法减少了与传统金工艺过程相关的危险化学品和高温的依赖.
- 废渣的非金属化酸部分可以重新用于建筑应用,促进循环经济原则.
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