摘要
研制了一套基于激光诱导击穿光谱(LIBS)的化验室水泥质量检测设备,可对水泥生熟料成分及率值进行快速检测。对该设备的总体结构、光学系统、样本制备、光谱处理方法等几方面进行了介绍。通过内标法建立定标模型,将LIBS测量结果与X射线荧光光谱分析(XRF)结果进行了对比分析,该套LIBS设备对水泥生熟料中CaO,SiO_2,Al_2O3和Fe_2O3测量的平均绝对误差分别为0.46%,0.25%,0.13%和0.05%,对水泥熟料率值KH,SM,IM测量的平均绝对误差分别为0.02,0.05和0.04;通过计算激发产生的等离子体温度和电子密度,验证了激光诱导水泥等离子体处于局部热平衡(LTE)态。
A laboratory cement quality analysis apparatus based on laser-induced breakdown spectroscopy （LIBS） has been devel-oped for rapid analysis of cement composition and ratio values .In this paper ,the overall structure ,the optical system ,the sam-ple preparation process ,as well as the spectral data analysis methods are introduced .The calibration model is established with internal standard method . A comparison as to the measurement results between LIBS and X-ray fluorescence spectrometry （XRF） has been made and being analyzed .It shows that by using the LIBS apparatus ,the mean absolute error of CaO ,SiO2 , Al2 O3 ,and Fe2 O3 in cement raw materials is 0.46% ,0.25% ,0.13% ,and 0.05% ,respectively ,while the mean absolute error of the ratio value such as KH ,SM ,and IM in cement clinker is 0.02 ,0.05 ,and 0.04 ,respectively .The generated cement plas-mas are verified to be in the local thermal equilibrium （LTE） condition by calculating both the plasma temperature and the elec-tron density .
出处
《光谱学与光谱分析》
SCIE
EI
CAS
CSCD
北大核心
2016年第7期2249-2254,共6页
Spectroscopy and Spectral Analysis
基金
国家自然科学基金项目(61475093
61205216
61378047)
国家科技支撑计划项目(2013BAC14B01)
山西省青年科学基金项目(2013021004-1)资助
关键词
激光诱导击穿光谱
水泥生熟料
平均绝对误差
率值
局部热平衡态
Laser-induced breakdown spectroscopy
Cement raw materials
Mean absolute error
Ratio values
Local thermal e-quilibrium
