XRF法快速测定铁钛精矿中的Fe、Ti品位  

XRF TECHNIQUE FOR RAPID DETERMINATION OF Fe、Ti CONTENT OF Fe、Ti—METAL ORE CONCENTRATES

作　　者：郭生良[1] 葛良全[1] 赖万昌[1] 程锋[1] 

机构地区：[1]成都理工大学核技术与自动化工程学院,四川成都610059

出　　处：《物探化探计算技术》2007年第5期436-438,370-371,共3页Computing Techniques For Geophysical and Geochemical Exploration

基　　金：中国地质调查局项目(1212010560204)

摘　　要：介绍了XRF法(X射线荧光)在快速测定铁钛精矿样中Fe、Ti品位中的应用,用IED2000P型快速X荧光分析仪,分析目标元素特征X射线计数率与含量的关系,主要研究了基体效应对测量结果的影响。通过比较,选用特散比与经验系数法相结合做三元回归计算的数理模型,可较好地校正基体效应,其分析结果相对误差在0.2%以内,达到了实际生产的要求。This paper deals with X-ray fluorescence technique for rapid determination of Fe、Ti content of Fe、Ti-metal ore concentrates.The analytical precision and accuracy of this technique are consistent with the chemical analytical error standard and can meet the practical production requirements.Overcoming matrix effect is a key problem in XRF.The authors analyze the X-rays fluorescence counts and content of each element.On this basis,the equation of joint application of 'the ratio of characteristic to scatter and the correction of experience coefficient' is built to overcome matrix effect.The detecting system is IED 2000P which is consisted of a 238Pu source,a Si-PIN electrical refrigeration semiconductor detector and selecting 100s as a measure time.

关 键 词：X射线荧光分析 基体效应 铁钛精矿 

分 类 号：P575.5[天文地球—矿物学]