The impact of water in the froth on flotation

泡沫中的水对浮选的影响

• 批准号: 530810-2018
• 负责人: Waters, Kristian
• 金额: $ 6.16万
• 依托单位: McGill University
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2021
• 资助国家: 加拿大
• 起止时间: 2021-01-01 至 2022-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=719666
• 关键词: impact; water; froth; flotation

Canada is one of the most important mining nations in the world, producing more than 60 minerals and metals. Mining and mineral processing has long been one of the country's key wealth generators. In 2014 the sector employed approximately 375,000 people and contributed $57 billion to Canada's Gross Domestic Product (GDP), and accounted for 18.2% of the value of Canadian goods exports. Flotation is possibly the most widely utilised separation technique used in mining and mineral processing, waste water treatment, and recycling to name but three examples. The principle is based on hydrophobic particles in a suspension selectively attaching to air bubbles, which then rise to the surface and are removed in an overflowing froth, commonly the concentrate; the hydrophilic material remains in suspension and is pumped out of the cell towards the bottom, most often the tailings fraction. In mineral processing, this technique has allowed for the separation of chemically similar minerals, which otherwise would not be economical to process. The importance of flotation was noted by Jeremy Mouat, who states that it is "perhaps the greatest single metallurgical improvement of the modern era". Considering its importance to the global economy, and the production of metals that many of us take for granted, there are still many aspects that are unknown, and require further research. This research project will investigate the impact of water flow on the performance of flotation columns. It will allow for in-situ measurements of the water overflowing, which brings with it unwanted waste material. In addition, ways to mitigate the recovery of this waste will also be investigated.Over the five-year period of this project eight student Highly Qualified Personnel (HQPs) will be trained. This includes three Ph.D. students and five undergraduate research trainees. These HQP will be qualified to move into the mining and minerals industry, which will benefit the supporting company (Flottec) and the Canadian economy as a whole.

加拿大是世界上最重要的矿业国家之一，生产60多种矿物和金属。长期以来，采矿和矿物加工一直是中国的主要财富来源之一。2014年，该部门雇用了约375,000人，为加拿大国内生产总值(GDP)贡献了570亿美元，占加拿大商品出口额的18.2%。浮选可能是在采矿和选矿、废水处理和回收中使用最广泛的分离技术，仅举三个例子。其原理是基于悬浮液中的疏水颗粒选择性地附着在气泡上，然后气泡上升到表面，并在溢出的泡沫中被去除，通常是浓缩物；亲水性物质保持在悬浮液中，并从单元中向底部泵出，最常见的是尾矿部分。在矿物加工中，这项技术允许分离化学上相似的矿物，否则加工起来不经济。杰里米·穆阿特指出了浮选的重要性，他说，这可能是现代最伟大的单一冶金改进。考虑到它对全球经济的重要性，以及我们许多人认为理所当然的金属生产，仍然有许多方面是未知的，需要进一步研究。本研究项目将考察水流对浮选柱性能的影响。它将允许现场测量溢出的水，这会带来不想要的废物。此外，还将研究减少废物回收的方法。在这个项目的五年期间，将培训8名学生高素质人员(HQP)。其中包括三名博士生和五名本科生研究实习生。这些HQP将有资格进入采矿和矿产行业，这将使支持公司(Flottec)和加拿大整体经济受益。