The impact of water in the froth on flotation

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。采矿和矿物加工长期以来一直是该国主要的财富来源之一。2014年，该行业雇佣了约37.5万人，为加拿大的国内生产总值（GDP）贡献了570亿美元，占加拿大商品出口价值的18.2%。浮选可能是最广泛使用的分离技术，用于采矿和矿物加工，废水处理和回收，仅举三个例子。该原理是基于悬浮液中的疏水颗粒选择性地附着在气泡上，然后这些气泡上升到表面，并在溢出的泡沫中被移除，通常是浓缩物；亲水物质保持悬浮状态，并被泵出到电池底部，最常见的是尾矿部分。在矿物加工中，这种技术使化学性质相似的矿物得以分离，否则这些矿物的加工是不经济的。杰里米·穆阿特（Jeremy Mouat）指出了浮选的重要性，他说这“可能是现代冶金学上最伟大的一次进步”。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，仍有许多方面是未知的，需要进一步研究。本研究项目将探讨水流对浮选柱性能的影响。它将允许对溢出的水进行现场测量，这些水会带来不必要的废物。此外，还将研究减少这些废物回收的方法。在该项目的五年期间，将培训八名学生高素质人才（hqp）。其中包括3名博士生和5名本科生。这些HQP将有资格进入采矿和矿产行业，这将有利于配套公司（Flottec）和整个加拿大经济。

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.