Study on Real-time Evaluation of Slagging Propensities of Coals Based on Laser-induced Breakdown Spectroscopy

Abstract

peer reviewedA method of real-time evaluation of slagging propensities of coals based on element quantitative technique by laser-induced breakdown spectroscopy Was introduced ．An experiment apparatus Was set up according to the principle of analysis technique，an d in which six typical coals samples were analyzed．Four ones were used to construct calibration curves of the analyzed elements as a reference diagram determining the relation between element concentration an d spectral intensity， afterwards，analyzed silicon element an d aluminum element in other sampleswere surveyed with the reference diagram ．Ratios of silicon dioxide to aluminum trioxide were computed subsequently according to chemical calculation to evaluate the slagging propensities of coals．Comparing the evaluation with the computed result based on ash composition analyzed with conventional measure，the two match well．After all，some improvement program s to optimize the measurement mechanism were discussed