Multichannel reflectance spectral assaying of zinc and copper flotation slurries
Multichannel reflectance spectral assaying of zinc and copper flotation slurries
复制标题
DOI：
10.1016/j.minpro.2009.07.010
复制
发表时间：
2009-10-01
影响因子：
--
通讯作者：
Kaartinen, Jani
中科院分区：
文献类型：
--
作者：
Haavisto, Olli;Kaartinen, Jani
本文扩展了早期的工作（Haavisto et al. 2008.基于光谱的浮选矿浆含量测量。Int. J. Miner.过程88（3-4），80-88），其中可见光和近红外（VNIR）反射光谱与X射线荧光（XRF）分析仪一起使用以改进锌浮选精矿的测定。特别是采样间隔的测定可以大大减少所提出的方法。利用多通道VNIR光谱分析仪对铜、锌浮选流程中7条重要矿浆线的光谱进行了测量。将基于递归数据的建模应用于VNIR光谱数据和XRF分析，以计算和自适应地维护校准模型。VNIR测定的准确性进行了评估，在所有的线路，并证明了所获得的高频检测振荡和突然的等级变化的好处。(C)2009 Elsevier B. V.保留所有权利。
This article extends the earlier work (Haavisto et al. 2008. Optical spectrum based measurement of flotation slurry contents. Int. J. Miner. Process. 88 (3-4), 80-88), where visible and near-infrared (VNIR) reflectance spectroscopy was used together with an X-ray fluorescence (XRF) analyzer to improve the assaying of zinc flotation concentrate. Especially the sampling interval of the assay could be drastically reduced by the presented approach. In this study, a multichannel VNIR spectrum analyzer is utilized to measure the spectrum of the seven most important slurry lines in copper and zinc flotation circuits. Recursive data-based modeling is applied to the VNIR spectrum data and XRF assays to calculate and adaptively maintain the calibration model. The accuracy of the VNIR assays is evaluated in all the lines, and the benefits of the obtained high frequency assays in detecting oscillations and sudden grade changes are demonstrated. (C) 2009 Elsevier B.V. All rights reserved.