Ben Amar Ismail, Roudjane Mourad, Griguer Hafid, Miled Amine, Messaddeq Younès
Department of Electrical and Computer Engineering, Université Laval, Quebec City, QC, Canada.
Innovation Lab for Operations, Mohammed VI Polytechnic University (UM6P), Ben Guerir, Morocco.
Sci Rep. 2022 Oct 24;12(1):17823. doi: 10.1038/s41598-022-21392-0.
Phosphate slurries are studied using the XRF technique and the effect of the particle sizes and the water content parameters are analyzed and reported for the first time. Samples of the phosphate slurry with different particle sizes (425 µm, 300 µm, 250 µm, 200 µm, 160 µm and 106 µm) and different water contents (30%, 40%, 50%, 60%) were analyzed using an energy-dispersive X-ray spectrometer (EDXRF). The results show that the relative error of measurement varies with the particle size of the analyzed sample, the water content and the element measured. The relative error increases with the increase of the particle size for the compounds PO, AlO, KO, CrO, FeO and Sr. The ratio between the relative errors related to the maximum and minimum grain sizes was 1.50 for PO, 4.01 for AlO, 15.58 for KO, 1.22 for CrO, 1.51 for FeO and 1.11 for Sr. Alternatively, an opposite evolution has been observed in the case of compounds CaO and SiO. The relative error increases with increasing water content for all compounds existing in the slurry. Depending on the measured compound, the relative error increases by a factor that varies between 1.39 and 2.39. In the case of PO the results do not show a clear correlation between the measurement error and the water content. A study will be conducted to investigate the effect of particle size and water content on XRF measurements in the case of phosphate slurry, aiming to develop an online XRF analyzer system for phosphate slurry.
采用X射线荧光光谱（XRF）技术对磷酸盐浆料进行了研究，并首次分析和报道了粒径和含水量参数的影响。使用能量色散X射线光谱仪（EDXRF）对具有不同粒径（425 µm、300 µm、250 µm、200 µm、160 µm和106 µm）和不同含水量（30%、40%、50%、60%）的磷酸盐浆料样品进行了分析。结果表明，测量的相对误差随分析样品的粒径、含水量和测量元素的不同而变化。对于PO、AlO、KO、CrO、FeO和Sr化合物，相对误差随粒径的增加而增大。PO的最大粒径与最小粒径相关的相对误差之比为1.50，AlO为4.01，KO为15.58，CrO为1.22，FeO为1.51，Sr为1.11。相反，对于CaO和SiO化合物则观察到相反的变化趋势。对于浆料中存在的所有化合物，相对误差均随含水量的增加而增大。根据所测量的化合物，相对误差增大的倍数在1.39至2.39之间变化。对于PO而言，结果未显示测量误差与含水量之间存在明显的相关性。将开展一项研究，以调查粒径和含水量对磷酸盐浆料XRF测量的影响，旨在开发一种用于磷酸盐浆料的在线XRF分析仪系统。
