Nano-reactive oily bubbles for enhancing fine particle flotation by agglomeration

纳米反应油性气泡通过团聚增强细颗粒浮选

• 批准号: 494140-2016
• 负责人: Liu, Qingxia
• 金额: $ 10.9万
• 依托单位: University of Alberta
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 财政年份: 2018
• 资助国家: 加拿大
• 起止时间: 2018-01-01 至 2019-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=657800
• 关键词: Nano; reactive; oily; bubbles; enhancing

Canada is one of the leading mining nations in the world, producing more than 60 vital minerals and metals**that are used globally. Mining is a pillar of the Canadian economy, generating almost 3% of the national GDP.**However, Canadian mining companies face a number of challenges in meeting the global demand for**commodities. Innovation is critical in the face of declining ore grades and more stringent environmental**regulations (Tracking the Trends 2013, Deloitte). The rapid depletion of high-grade mineral ore resources has**driven the mining and mineral processing industry to explore new technologies to process lower grade ores.**The effective recovery of valuable minerals from low grade ores requires energy-intensive fine grinding for**mineral liberation and a new technology for fine particle flotation. The flotation of fine particles of sizes less**than 5 micron is extremely challenging due to inefficient bubble - particle collision and attachment,**compounded by slime coatings, leading to a low recovery and a poor selectivity. The slime coatings on target**mineral particles are more problematic for fine particle flotation due to non-selective precipitation or**deposition of metal hydroxide species and fine gangue mineral particles on the surface of target minerals. This**in turn results in a loss of valuable minerals in tailings. The proposed research in this strategic project is to**develop an innovative nano-reactive oily bubble technology for enhancing fine particle flotation by**selectively increasing the particle size of traget mineral particles . The success of this research program will enhance the resources conversion and processing (strategic research topic) for the sustainable development and use of Canada's mineral resources (minerals sector) while minimizing the use of energy and the generation of mineral wastes. It is anticipated that the concept-proven nano-reactive oily bubble technology for enhancing fine particle flotation by selectively increasing the particle size of target minerals be applied in mineral processing industry timely within 10 years.****

加拿大是世界上主要的矿业国家之一，生产60多种全球使用的重要矿物和金属。采矿业是加拿大经济的支柱，占全国GDP的近3%。然而，加拿大矿业公司在满足全球对**商品的需求方面面临许多挑战。面对矿石品位下降和更严格的环境法规，创新至关重要（德勤2013年趋势追踪）。高品位矿石资源的迅速枯竭，促使矿业和选矿行业不断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矿物需要高能耗的细磨矿解离和细颗粒浮选新技术。小于5微米的细颗粒的浮选是极具挑战性的，因为气泡-颗粒的碰撞和附着效率不高，再加上泥涂层，导致回收率低，选择性差。由于金属氢氧化物和细脉石矿物颗粒在目标矿物表面的非选择性沉淀或沉积，目标矿物颗粒上的泥包层对细颗粒浮选更有问题。这反过来又导致尾矿中有价值的矿物质的损失。本战略项目拟开展的研究是**开发一种创新的纳米反应性油泡技术，通过**选择性地增加矿物颗粒的粒度来增强细颗粒浮选。这项研究计划的成功将加强资源转换和加工（战略研究课题），以实现加拿大矿产资源（矿产部门）的可持续发展和利用，同时尽量减少能源的使用和矿物废物的产生。通过选择性提高目标矿物的粒度来提高细颗粒浮选的纳米反应性油泡技术有望在10年内及时应用于选矿行业。****