聚合物辅助尾部在海水和大陆水中脱水,用于铜漂浮
Rubén H Olcay1, Andréia B Henriques2, George E Valadão2
1Departamento de Ingeniería Metalúrgica y Minas, Facultad de Ingeniería y Arquitectura, Universidad Arturo Prat, Avenida Arturo Prat 2120, Iquique 1110939, Chile.
Polymers
|October 16, 2025
概括
这项研究表明,虽然海水可以用于干旱采矿中的水再利用,但较高的离子度会影响聚合物的性能. 优化聚合物选择和剂量对于高效的水回收和可持续的铜漂浮至关重要.
科学领域:
- 采矿工程 采矿工程 采矿工程
- 环境科学 环境科学
- 水资源管理 水资源管理
背景情况:
- 干旱地区的采矿业务面临着水资源短缺,这推动了对水资源再利用战略的需求.
- 海水和大陆水在离子度上有很大差异,影响采矿中的化学过程.
研究的目的:
- 评估海水与大陆水对尾矿加厚和铜漂浮的有效性.
- 评估水化学对聚合物性能和水回收的影响.
- 优化聚合物选择和剂量,以实现可持续的采矿业务.
主要方法:
- 使用海水和大陆水进行实验室规模的沉积和柱子加厚剂试验.
- 稳定性测试以确定固体含量和沉降值.
- 用循环和过水源进行铜漂浮试验.
- 分析不同水型中的离子度及其对聚合物性能的影响.
主要成果:
- 与大陆水相比,海水中较高的离子含量对聚合物性能产生了负面影响.
- 阳离子聚合物 (A3) 提高了沉率,在海水中效率略低.
- 柱体加厚剂实现了与海水的较低排放固体,表明减少了水回收.
- 聚合物在200g/t的脱水中获得了比柱体加厚剂更高的固体含量和更好的沉降.
- 再循环的海水改善了铜的回收,而再循环的大陆水减少了铜的回收.
结论:
- 水的化学性质显著影响了聚合物的有效性在尾矿的加厚.
- 在加厚过程中使用海水导致回收水量的减少.
- 优化聚合物选择和剂量对于高效的水回收和可持续的漂浮至关重要.
- 再循环策略需要仔细考虑水化学和残留聚合物效应.
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