Abstract：An independently-developed laser composition analyzer based on laser-induced breakdown spectroscopy (LIBS) technology was used to realize online detection of matte,both solid and molten matte.The tested results were compared with the X-ray fluorescence spectrometry(XRF) detection results with standard sample preparation.A total of 1 294 times with comparative data after the LIBS equipment was put into operation on site.The data consisted of 878 times solid matte and 416 times melt matte.Compared with the XRF detection results after sampling,the online detection of LIBS equipment had an average absolute error of 0.61%,and an average relative error of 1.1%.The online detection performance of the LIBS equipment had been tested,the average value of the detection result range during the copper extraction process of the same furnace was 0.64%,and the average minimum error of the online detection results compared with XRF sampling test result was 0.32%.The results showed that the LIBS technology could achieve reliable online measurement of matte in different states,and its performance met the real-time and reliability requirements of the production process for element detection.The application of LIBS equipment realized the stable and reliable online detection of the melt composition in the smelting process of the metallurgical industry,which could provide the necessary foundation for fine control of the smelting production process,the metal balance optimization and information management.
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