Kinetics of alumina dissolution in aluminium electrolysis cells

铝电解槽中氧化铝溶解动力学

• 批准号: 490433-2015
• 负责人: Kiss, Laszlo
• 金额: $ 24.08万
• 依托单位: Université du Québec à Chicoutimi
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 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=619293
• 关键词: Kinetics; alumina; dissolution; aluminium; electrolysis

The present proposal aims at the further deepening of understanding of the alumina dissolution process in aluminum electrolysis cells in order to improve operational stability and better energy efficiency. The expected improvements offer the potential of a better control of greenhouse gas emissions during primary aluminum production. The proposed collaborative research with Rio Tinto Alcan (RTA), aims at the better control of spatial and temporal variations of the alumina distribution. The project builds upon the results of the previous five-year NSERC-RTA collaborative research, titled "Study of Alumina Dissolution and Side-ledge Behaviour in Aluminium Electrolysis Cells". In that project we extended the fundamental knowledge about the nature and mechanisms of alumina dissolution in industrial cells and we identified the directions of further research. Experimental methods and mathematical modeling will be both used to study the alumina feeding process. The previous cooperative research project helped to forge a very efficient team, with competent members with complementary expertise both from academia (UQAC and École Polytechnique) and RTA (Arvida Research and Development Center and Laboratoire de Recherches des Fabrications, en France).The primary aluminum industry represents a very important sector in the Canadian economy. The Canadian smelters excel worldwide in their energy efficiency and low environmental impact. RTA, the third biggest producer of primary metal is also a technology leader. The expected results will help the Canadian aluminum industry to keep its leading position in the increasingly stronger international competition.

本提案旨在进一步加深对铝电解细胞中铝溶解过程的了解，以提高运行稳定性和更好的能效。预期的改进提供了更好地控制原铝生产期间温室气体排放的潜力。提出的与Rio Tinto Alcan（RTA）的合作研究旨在更好地控制铝分布的空间和临时变化。该项目基于上一年NSERC-RTA协作研究的结果，标题为“铝电解细胞中氧化铝溶解和侧向行为的研究”。在该项目中，我们扩展了有关工业细胞中氧化铝溶解的性质和机制的基本知识，并确定了进一步研究的方向。实验方法和数学建模都将用于研究氧化铝进食过程。以前的合作研究项目帮助建立了一个非常有效的团队，具有学术界（uqac和écolePolytechnique）和RTA（ArvidaResear纳西和开发中心以及法国的Laboratoire De Recherches des Frunceing，En France）具有完全专业知识的有能力的成员。主要的铝制行业代表了Canadian Canadian经济中非常重要的部门。加拿大冶炼厂在全球范围内的能源效率和较低的环境影响力中表现出色。 RTA是主要金属的第三大生产国，也是技术领导者。预期的结果将有助于加拿大铝业在越来越强大的国际竞争中保持领先地位。