Development of a Laboratory Cement Quality Analysis Apparatus Based on Laser-Induced Breakdown Spectroscopy  

作　　者：樊娟娟 张雷 王鑫 李郁芳 弓瑶 董磊 马维光 尹王保 王哲 李政 张向杰 李逸 贾锁堂 

机构地区：[1]State Key Laboratory of Quantum Optics and Quantum Optics Devices,Institute of Laser Spectroscopy,Shanxi University [2]State Key Lab of Power Systems,Department of Thermal Engineering,Tsinghua-BP Clean Energy Center,Tsinghua University [3]Taiyuan Amethyst Technology Co.,Ltd. [4]Shanxi Zhongtiaoshan New Building Materials Co.,Ltd.

出　　处：《Plasma Science and Technology》2015年第11期897-903,共7页等离子体科学和技术（英文版）

基　　金：supported by National Natural Science Foundation of China(Nos.61127017,61378047,61205216,61178009,61108030,61475093,and 61275213);the National Key Technology R&D Program of China(No.2013BAC14B01);the 973 Program of China(No.2012CB921603);the Shanxi Natural Science Foundation,China(Nos.2013021004-1,2012021022-1);the Shanxi Scholarship Council of China(Nos.2013-011 and 2013-01)

摘　　要：Determination of the chemical composition of cement and ratio values of clinker plays an important role in cement plants as part of the optimal process control and product quality evaluation. In the present paper, a laboratory laser-induced breakdown spectroscopy （LIBS） apparatus mainly comprising a sealed optical module and an analysis chamber has been designed for possible application in cement plants for on-site quality analysis of cement. Emphasis is placed on the structure and operation of the LIBS apparatus, the sealed optical path, the temperature controlled spectrometer, the sample holder, the proper calibration model established for minimizing the matrix effects, and a correction method proposed for overcoming the ＇drift＇ obstacle. Good agreement has been found between the laboratory measurement results from the LIBS method and those from the traditional method. The absolute measurement errors presented here for oxides analysis are within 0.5%, while those of ratio values are in the range of 0.02 to 0.05. According to the obtained results, this laboratory LIBS apparatus is capable of performing reliable and accurate, composition and proximate analysis of cement and is suitable for application in cement plants.Determination of the chemical composition of cement and ratio values of clinker plays an important role in cement plants as part of the optimal process control and product quality evaluation. In the present paper, a laboratory laser-induced breakdown spectroscopy （LIBS） apparatus mainly comprising a sealed optical module and an analysis chamber has been designed for possible application in cement plants for on-site quality analysis of cement. Emphasis is placed on the structure and operation of the LIBS apparatus, the sealed optical path, the temperature controlled spectrometer, the sample holder, the proper calibration model established for minimizing the matrix effects, and a correction method proposed for overcoming the ＇drift＇ obstacle. Good agreement has been found between the laboratory measurement results from the LIBS method and those from the traditional method. The absolute measurement errors presented here for oxides analysis are within 0.5%, while those of ratio values are in the range of 0.02 to 0.05. According to the obtained results, this laboratory LIBS apparatus is capable of performing reliable and accurate, composition and proximate analysis of cement and is suitable for application in cement plants.

关 键 词：laser-induced breakdown spectroscopy LIBS CEMENT composition analysis proximate analysis ratio values linear correction method 

分 类 号：TQ172.66[化学工程—水泥工业]