In situ and real-time measurement of platinum group metal concentrations by laser-induced breakdown spectroscopy

利用激光诱导击穿光谱原位实时测量铂族金属浓度

• 批准号: 521608-2018
• 负责人: Vidal, François
• 金额: $ 10.24万
• 依托单位: Institut national de la recherche scientifique
• 依托单位国家: 加拿大
• 项目类别: Strategic Projects - Group
• 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=697859
• 关键词: situ; real; time; measurement; platinum

Canada is one of the main global producers of Platinum Group Elements (PGEs, including platinum, palladium, rhodium, iridium, osmium, and ruthenium). These precious metals are in high demand due to their exceptional physical and chemical properties. Currently, the measurement of platinum and palladium (two of the main PGEs) content in the ore from the mining site by lead fire assay needs at best 1 to 2 days. However, many operational decisions, especially in the exploitation stages, should be taken by engineers and geologists ideally in real time. At this time, there is nowhere in the world a technology for characterizing the content of these precious metal in the ore in real time and in the field conditions of the mining environment or of the production line. The proposed project aims to establish the bases for developing a new portable and compact technology for measuring, in situ and in real time, average concentrations of the PGEs in rocks down to a fraction of a part per million. The proposed system is based on the Laser-Induced Breakdown Spectroscopy (LIBS) technique. In short, this technique relies on the use of a laser to ablate the surface of the material to be analyzed; the intensity of the measured spectral emission of the plasma generated is then compared with a calibration curve that provides the concentration of the element of interest. Our team already has considerable experience in the development and use of innovative approaches for LIBS. This multidisciplinary project (lasers, plasma spectroscopy, geology, mining engineering) involves four researchers from the academic (INRS and Laval University) and government (NRC) sectors, as well as two major companies operating PGEs in Canada: Glencore, through XPS Expert Process Solutions, and North American Palladium.

加拿大是白金组元素的主要全球生产国之一（PGES，包括铂，钯，萝卜，鸢尾花，鸢尾花，osmium和ruthenium）。这些贵金属由于其出色的物理和化学特性而需求量很高。目前，通过铅火测定最大的需求在矿石场所的铂和钯（主要PGES中的两个）含量（最多为1至2天）的测量。但是，许多运营决策，尤其是在剥削阶段，应由工程师和地质学家实时做出。目前，世界上没有任何一项技术可以实时和在采矿环境或生产线的现场条件中表征这些贵金属的内容。拟议的项目旨在建立开发一种新的便携式和紧凑技术的基础，以实地和实时测量岩石中PGE的平均浓度，降低到每百万美元的一部分。所提出的系统基于激光诱导的分解光谱（LIBS）技术。简而言之，该技术依赖于使用激光来消除要分析的材料表面。然后将产生的血浆测得光谱发射的强度与提供感兴趣元素浓度的校准曲线进行比较。我们的团队已经在开发和使用创新方法的LIBS方面拥有丰富的经验。这个多学科项目（激光，等离子光谱，地质，采矿工程）涉及四名学术研究人员（INRS和Laval大学）和政府（NRC）部门，以及在加拿大运营的两家主要公司：Glencore：Glencore，通过XPS Expert Process Process Solutions和North American Palladium。