固体废物抑制剂的利用用于酸盐矿石的清洁漂浮丰富
Shengzong Lan1, Liuyang Dong1, Peilun Shen1
1State Key Laboratory of Complex Nonferrous Metal Resources Clean Utilization, Yunnan Key Laboratory of Green Separation and Enrichment of Strategic Mineral Resources, Faculty of Land Resources Engineering, Kunming University of Science and Technology, Kunming 650093, China.
Langmuir : the ACS journal of surfaces and colloids
|January 28, 2025
概括
基石 (PG) 有效地抑制了多洛米特浮动,使得阿帕分离. 这项研究证明了PG PG.
科学领域:
- 矿物加工 矿物加工
- 环境科学 环境科学
- 材料科学 材料科学 材料科学
背景情况:
- 石 (PG) 积累在化学工业中带来了环境挑战.
- 开发可持续的PG利用方法对于环境和工业进步至关重要.
研究的目的:
- 调查石 (PG) 作为漂浮抑制剂的潜力,用于分离阿帕和多洛米特.
- 阐明PG选择性抑制多洛米特背后的机制.
主要方法:
- 进行了微漂浮实验,以评估PG作为漂浮抑制剂的性能.
- 使用了表面特征技术,包括接触角度,泽塔电位和吸附测量.
- 使用显微镜 (AFM,SEM) 和光谱 (XPS,TOF-SIMS) 来分析矿物表面的PG吸附.
- 进行了分子动力学模拟,以了解相互作用机制.
主要成果:
- PG选择性地抑制了多洛米特浮动,在pH范围7-11范围内恢复率从76%降低到10%,而阿帕的恢复率仍然很高 (>90%).
- PG增强了多洛米特的水友性,并阻碍了酸 (NaOL) 的吸附,对阿帕提特的影响最小.
- 在PG中,CaSO4和CaHPO4被确定为活性抑制成分,选择性地吸附在多洛米特表面的Ca和Mg位点上.
- 分子动力学模拟证实了CaSO4与多洛米特的相互作用以及CaHPO4在促进CaSO4吸附中的作用.
结论:
- 石 (PG) 可以有效地作为选择性漂浮抑制剂用于从多洛米特中分离阿帕.
- 这种抑制作用归因于PG对多洛米特表面的CaSO4和CaHPO4的选择性吸附.
- 这项研究为矿物加工中石材利用提供了一种新且环保的方法.
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