Laser-Induced Breakdown Spectroscopy for 24/7 Automatic Liquid Slag Analysis at a Steel Works

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• 作者：Volker Sturm ; R眉diger Fleige ; Martinus de Kanter ; Richard Leitner ; Karl Pilz ; Daniel Fischer ; Gerhard Hubmer ; Reinhard Noll
• 刊名：Analytical Chemistry
• 出版年：2014
• 出版时间：October 7, 2014
• 年：2014
• 卷：86
• 期：19
• 页码：9687-9692
• 全文大小：471K
• ISSN：1520-6882

文摘

Laser-induced breakdown spectroscopy (LIBS) is applied for the inline analysis of liquid slag at a steel works. The slag in the ladle of a slag transporter is measured at a distance of several meters during a short stop of the transporter. The slag surface with temperatures from 鈮?00 to 鈮?400 掳C consists of liquid slag and solidified slag parts. Automatic measurements at varying filling levels of the ladle are realized, and the duration amounts to 2 min including data transmission to the host computer. Analytical results of the major components such as CaO, Fe, SiO₂, MgO, Mn, and Al₂O₃ are compared with reference values from the steel works laboratory for solid pressed slag samples as well as for samples from the liquid slag. Stable 24/7 operation during the first three-month test run was achieved.