Molecular Engineering and Controlled Nano-assembly for Complex Sulfide Flotation in High Salinity Water

高盐度水中复杂硫化物浮选的分子工程和受控纳米组装

• 批准号: RGPIN-2015-05422
• 负责人: Liu, Qingxia
• 金额: $ 2.55万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Discovery Grants Program - Individual
• 财政年份: 2017
• 资助国家: 加拿大
• 起止时间: 2017-01-01 至 2018-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=637748
• 关键词: Molecular; Engineering; Controlled; Nano; assembly

The depletion of high-grade mineral ore resources has driven Canada’s mining and mineral processing industry to explore new technologies to process lower grade ores. The effective recovery of valuable minerals from low-grade ore requires intensive fine grinding for mineral liberation and a new technology for fine particle flotation. With increasingly stringent environment regulations for zero discharge, recycled water is used for mineral processing and oil sands extraction. As a result, salinity or total dissolved solids (TDS) in the recycled water has increased significantly. These elevated ionic concentrations, as well as the precipitation of metal hydroxides at high pH, retard the collector’s reaction with mineral surfaces and lower the selectivity. These problems limit the effectiveness of recycled high-salinity water or seawater in mineral processing.

高品位矿石资源的枯竭促使加拿大采矿和选矿行业探索加工低品位矿石的新技术，从低品位矿石中有效回收有价值的矿物需要对矿物进行精磨解离和新技术。随着零排放环境法规的日益严格，循环水用于矿物加工和油砂提取，导致循环水中的盐度或总溶解固体（TDS）显着增加。以及高pH值下金属氢氧化物的沉淀，阻碍了捕收剂与矿物表面的反应并降低了选择性，这些问题限制了矿物加工中回收的高盐度水或海水的有效性。