Advanced Imaging Analytics for Gold Mining

金矿开采高级成像分析

• 批准号: 543627-2019
• 负责人: Stolow, Albert
• 金额: $ 2.91万
• 依托单位: University of Ottawa
• 依托单位国家: 加拿大
• 项目类别: Collaborative Research and Development Grants
• 财政年份: 2019
• 资助国家: 加拿大
• 起止时间: 2019-01-01 至 2020-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=687512
• 关键词: Advanced; Imaging; Analytics; Gold; Mining

In a world-wide effort, Coherent Raman Microscopy (CRM) was developed for Biophotonics imaging applications. We present a unique opportunity to translate and adapt these powerful methods to Earth Sciences and Mineralogy. We are the global pioneers in the application of CRM techniques to Earth Sciences and Mineralogy, launching the new field of Geophotonics. With industry leader SGS Minerals , we will address the carbonaceous preg-robbing problem which reduces yields in Gold processing. We will supplement industry standard (slow) analytical tools with specific imaging platforms that are much faster, more flexible, robust and portable. Although spontaneous Raman spectroscopy has a long history of characterizing carbonaceous samples, it suffers from weak signals and fails when samples luminesce or fluoresce. Importantly, CRM is typically 10,000 times faster (more sensitive) than Raman and is immune to sample fluorescence. Furthermore, CRM combines rapid 3D Raman imaging with other nonlinear imaging techniques (e.g. Second Harmonic Generation) which resolve grain texture, crystallinity and morphology, further characterizing the mineral of interest. CRM comprises two techniques: Coherent Anti-Stokes Raman Scattering (CARS) and Stimulated Raman Scattering (SRS) microscopy. In Gold processing, specific carbonaceous materials will have unique Raman signatures, amorphous/crystalline properties and gold cyanide adsorption propensities. Therefore, the innovation that CRM offers is rapid, material-specific, surface and depth-resolved imaging and the potential for new real-time analytics for Gold Process Mineralogy.

在全球范围内，开发了针对生物素化成像应用的连贯的拉曼显微镜（CRM）。我们提供了一个独特的机会，将这些强大方法转化为地球科学和矿物学。我们是将CRM技术应用于地球科学和矿物学的全球开拓者，启动了新的地球色谱领域。随着行业领导者SGS矿物质，我们将解决碳质预抗问题问题，从而降低了黄金加工的产量。我们将使用特定的成像平台来补充行业标准（慢）分析工具，这些平台更快，更灵活，健壮和便携。尽管自发的拉曼光谱学具有表征碳质样品的悠久历史，但是当样品发光或荧光时，它会遭受弱信号和失败。重要的是，CRM通常比拉曼快10,000倍（更敏感），并且对样品荧光免疫。此外，CRM将快速的3D拉曼成像与其他非线性成像技术（例如第二次谐波生成）结合在一起，这些技术可以解决谷物纹理，结晶度和形态，进一步表征了感兴趣的矿物质。 CRM包括两种技术：连贯的反stokes拉曼散射（CAR）和刺激的拉曼散射（SRS）显微镜。在黄金加工中，特定的碳质材料将具有独特的拉曼特征，无定形/晶体特性和金氰化物的吸附倾向。因此，CRM提供的创新是快速，特定于物质的，表面和深度分辨的成像，以及用于黄金工艺矿物学的新实时分析的潜力。