摘要
X荧光分析(XRF)技术在线测量煤炭中元素浓度时,煤粉粗糙、不均匀的表面及粒度的大小引起测量距离的改变导致测量的准确性受到影响。为解决上述问题,通过数学建模计算出距离变化与XRF测量过程的函数关系,结合实验结果探究XRF在线测量单元与测量点距离变化的影响。实验结果显示,在一定的距离范围内,元素特征X荧光强度与距离存在良好的线性关系。基于此线性关系建立了距离修正方法,并利用激光测距仪对相同元素含量不同颗粒度煤样的测量,对距离修正方法进行验证。结果表明,利用该距离修正方法后,XRF在线实验平台可显著提高元素的在线测量准确度。
Using X-ray fluorescence(XRF)technology to measure the elements concentration in coal online,the measurement accuracy is affected by the coal uneven surface and the particle size.In order to improve the accuracy of element concentration measurement,a novel distance correction method was established elaborated by iteration,which was based on the linear relationship between the XRF intensity and the distance within a certain range.In order to verify the effectiveness of this method,different particle size coal samples with same components have been measured by the online XRF analyzer with a laser rangefinder.After applying the distance correction method,the results showed that the accuracy of online XRF measurement was significantly increased.
作者
张焱
汤彬
张雄杰
贾文宝
王仁波
陈若愚
姚泽恩
ZHANG Yan;TANG Bin;ZHANG Xiong-jie;JIA Wen-bao;WANG Ren-bo;CHEN Ruo-yu;YAO Ze-en(State Key Laboratory of Nuclear Resources and Environment,East China University of Technology,Nanchang 330013,China;Jiangxi Engineering Laboratory on Radioactive Geoscience and Big Data Technology,East China University of Technology,Nanchang 330013,China;Engineering Research Center of Nuclear Technology Application,Ministry of Education,East China University of Technology,Nanchang 330013,China;College of Nuclear Science and Technology,Lanzhou University,Lanzhou 730000,China;College of Materials Science and Engineering,Nanjing University of Aeronautics and Astronautics,Nanjing 210016,China)
出处
《东华理工大学学报（自然科学版）》
CAS
2020年第1期77-82,共6页
Journal of East China University of Technology(Natural Science)
基金
国家自然科学基金项目(41904160,41704171,11765001)
江西省自然科学基金项目(20192BAB212007)
江西省教育厅科技计划项目(GJJ150608)
核资源与环境国家重点实验室开放基金项目(NRE1922)
核技术应用教育部工程研究中心开放基金项目(HJSJYB2018-2,HJSJYB2019-2,HJSJYB2015-1)
江西省放射性地学大数据技术工程实验室开放基金项目(JELRGBDT201902,JETRCNGDSS201804)
东华理工大学实验技术开发项目(DHSYKF-2019-030)
东华理工大学博士科研启动基金项目(DHBK2018066).
关键词
XRF
距离修正
在线分析
XRF
distance correction
on-line analysis
