Rapid Determination of Titanium,Iron,Phosphorus,Vanadium and Cobalt in Titanomagnetite by X-Ray Fluorescence Spectrometry
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摘要: 采用粉末压片法制样，使用Axios型X射线荧光光谱仪，实现了对陕南地区钒钛磁铁矿中的Ti、Fe、P、V、Co五种元素的快速测定。避免了传统方法分析流程长、劳动强度大、污染严重的缺点。分析结果显示，当样品粒度≤0.074 mm，制样压力≥30 MPa，保压时间大于30 s，测定时间在20 s时，钒钛磁铁矿中的Ti、Fe、P、V、Co五种元素的荧光强度趋于稳定。在标准曲线中加入一些定值样品可以有效的减小基体效应，测试数据精密度优于2.1%，准确度优于3.7%，相对标准偏差小于5%，满足地质找矿和选矿测试要求。拓展了X荧光光谱的应用范围，对于缩短找矿时间、指导选矿流程、开发陕南地区丰富的钛铁矿资源具有重要意义。Abstract: In this paper, the titanomagnetite samples from southern Shaanxi have been preparated by pressed powder tablet, and the titanium, iron, phosphorus, vanadium and cobalt have been rapid determinated using Axios X-ray fluorescence spectrometer.This method avoids the disadvantages of traditional testing methods, such as long process, labor-intensive and polluting serious.The analysis results show that, when the sample grain size is equal or less than 0.074 mm, the sample preparation pressure is equal or greater than 30 MPa, and the holdup time is more than 30 s, the tested results of Ti, Fe, P, V and Co in titanomagnetite samples are stable and reliable.Adding a fixed sample to the standard curve can effectively reduce the matrix effect, the precision of the test data is better than 2.1%, the accuracy is better than 3.7% and the relative standard deviation is less than 5%, which meet the testing requirements for geological prospecting and mineral processing.It is important to expand the scope application of X-ray fluorescence spectroscopy, to shorten the time prospecting, to guide the beneficiation processes and to develop the rich ilmenite resources in southern Shaanxi.
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