Research On The LIBS Detection Of Cement Components

With the rapid development of China’s economic construction, cement industry has reached a considerable scale, but the annual production of cement is also continued to increase.Qualitative and quantitative analysis of cement composition is the basic method of classification and quality testing of cement. Compared with the cement detection methods today, laser-induced breakdown spectroscopy(LIBS) has a rapid detection speed, sample preparation is simple, one measurement can detect a variety of elem ents, wide measurement range, capable of detecting metal and non-metallic elements in cement samples etc. So LIBS is very suitable for rapid detection of cement components in the industrial production.This paper describes the development of LIBS technology and research on LIBS detection of cement components in domestic and foreign. Based on the analysis of laser-induced breakdown spectroscopy principle and characteristics of LIBS, we proposed LIBS measurement system of cement components, including single and double-pulse excitation system. Experimental study of the measurement conditions, the laser energy is discussed, as well as dual-pulse interval time, delay time of integration.The optimum parameters of cement composition LIBS spectra was obtained.Using the cement components measurement system of LIBS, the main ingredient of cement and trace elements were qualitatively analyzed. Mg 、 Fe 、 Al 、 Cu in cement sample, were quantitatively analyzed.Using cyclic inversion Method for error analysis of quantitative detection. Measurements show that the use of laser-induced breakdown spectroscopy for detection and analysis of cement components is feasible, with good accuracy.