Method development of fast MFT sample preparation for XRD measurement of clay chemistry and content

用于粘土化学和含量 XRD 测量的快速 MFT 样品制备方法开发

• 批准号: 488257-2015
• 负责人: Dambrowitz, Christopher
• 金额: $ 1.82万
• 依托单位: Northern Alberta Institute of Technology
• 依托单位国家: 加拿大
• 项目类别: Applied Research and Development Grants - Level 1
• 财政年份: 2015
• 资助国家: 加拿大
• 起止时间: 2015-01-01 至 2016-12-31
• 项目状态: 已结题
• 来源: https://www.nserc-crsng.gc.ca/ase-oro/Details-Detailles_eng.asp?id=586157
• 关键词: Method; development; fast; MFT; sample

The consolidation of mature fine tailing (MFT) is significantly affected by the presence of clay. Identification and quantification of clay minerals is key to developing effective engineering models, including polymer addition and utilization of thickening, to help reduce MFT inventories. X-ray diffraction (XRD) is a versatile technique that can be used to identify and quantify clay minerals. The precision of qualitative and quantitative XRD results mainly rely on sample preparation that can dramatically influence sample properties, including mean particle size, homogenization, preferred orientation, etc. In the current commercial process, it takes 3 to 4 days to analyze clay contents from fines for MFT samples, which could slow down any operational process proposed to treat MFT. Similarly, the current slow response time will also negatively impact treatment of any tailings species, particularly live tailings, the effective treatment of which would ease long-term problems associated with tailings handling and control. The successful outcome of this project will be the development of a protocol rapid preparation method for MFT samples for accurate XRD analysis, potentially allowing better handling of these key tailings species. Application to live tailings will help operators adjust the chemical additives or flocculants dosage before it goes to the tailing pond to reduce the cost.

粘土的存在对成熟细尾矿(MFT)的固结有显著影响。鉴定 粘土矿物的量化是开发包括聚合物在内的有效工程模型的关键 添加和利用增稠剂，有助于减少MFT库存。X射线衍射(x射线衍射仪)是一种用途广泛的 可用于识别和量化粘土矿物的技术。定性和定量的精确度 X射线衍射仪的结果主要依赖于样品的制备，这对样品的性能有很大的影响，包括 平均粒度、均化、择优取向等。在目前的商业化工艺中，需要3到4 分析MFT样品的细粉中的粘土含量需要几天时间，这可能会减慢任何操作过程 建议治疗MFT。同样，目前缓慢的反应时间也将对任何 尾矿种类，特别是活尾矿，对其进行有效处理将缓解长期问题 与尾矿处理和控制有关。这个项目的成功结果将是开发 一种用于准确的X射线衍射分析的MFT样品的快速制备方法的协议，潜在地允许更好地 处理这些关键的尾矿物种。应用于活尾矿将帮助操作员调整化学物质 在进入尾矿库之前添加添加剂或絮凝剂，以降低成本。