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: $ 4.27万
• 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: 2020
• 资助国家: 加拿大
• 起止时间: 2020-01-01 至 2021-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=697403
• 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。 采矿和矿物加工长期以来一直是该国主要的财富创造者之一。 2014年，该部门雇用了大约375，000人，为加拿大国内生产总值（GDP）贡献了570亿美元，占加拿大商品出口价值的18.2%。 浮选可能是在采矿和矿物加工、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到气泡上，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;亲水材料保持悬浮液并被泵出单元朝向底部，最常见的是尾矿部分。 在矿物加工中，这种技术可以分离化学性质相似的矿物，否则加工这些矿物是不经济的。 浮选的重要性被杰里米·穆阿特（Jeremy Mouat）指出，他说这“可能是现代最伟大的冶金进步”。 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，仍然有许多方面是未知的，需要进一步研究。 本研究项目将调查水流对浮选柱性能的影响。 它将允许现场测量溢出的水，这带来了不必要的废物。 此外，还将研究如何减少这种废物的回收。 在该项目的五年期间，将培训八名学生高素质人员。 其中包括三位博士。学生和五名本科研究实习生。 这些HQP将有资格进入采矿和矿物行业，这将有利于支持公司（Flottec）和整个加拿大经济。