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Quantitative analysis of aluminum dross by the Rietveld method

机译:用Rietveld方法定量分析铝渣

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摘要

Aluminum white dross is a valuable material principally due to its high metallic aluminum content. The aim of this work is to develop a method for quantitative analysis of aluminum white dross with high accuracy. Initially, the material was separated into four granulometric fractions by means of screening. Two samples of each fraction were obtained, which were analyzed by means of X-ray fluorescence and energy dispersive spectroscopy in order to determine the elements present in the samples. The crystalline phases aluminum, corundum, spinel, defect spinel, diaoyudaoite, aluminum nitride, silicon and quartz low were identified by X-ray diffraction. The quantitative phase analysis was performed by fitting the X-ray diffraction profile with the Rietveld method using the GSAS software. The following quantitative results were found: 77.8% aluminum, 7.3% corundum, 2.6% spinel, 7.6% defect spinel, 1.8% diaoyudaoite, 2.9% aluminum nitride, and values not significant of quartz and silicon.
机译:铝白渣主要是由于其高金属铝含量而成为有价值的材料。这项工作的目的是开发一种高精度定量分析铝白渣的方法。最初,通过筛选将物料分为四个粒度级分。获得每个级分的两个样品,然后通过X射线荧光和能量色散光谱法对其进行分析,以确定样品中存在的元素。通过X射线衍射鉴定出铝,刚玉,尖晶石,缺陷尖晶石,硅藻土石,氮化铝,硅和石英低结晶相。通过使用GSAS软件用Rietveld方法拟合X射线衍射图谱来进行定量相分析。发现以下定量结果:77.8%的铝,7.3%的刚玉,2.6%的尖晶石,7.6%的缺陷尖晶石,1.8%的硅藻土石,2.9%的氮化铝,并且石英和硅的值不显着。

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