環境調和型鉄鋼製造プロセスのための迅速・スキルフリー分析法の開発

概要

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In the steelmaking industry, rapid and skill-free analysis methods have been required for energy saving and unskilled workers. At first, a flow-injection procedure combining electrolytic sample decomposition and inductively coupled plasma atomic emission spectrometry (ICP-AES) was proposed. This system was applied for silicon and phosphorus in steel. The analytical results were in a good agreement with those of the JIS methods. A quick evaluation technique of the defects of steel materials by laser induced breakdown spectroscopy (LIBS) was also established. LIBS could detect specific elements in defected parts due to alumina inclusions and contaminations from continuous casting mold flux as well as slag. The proposed method made it possible to inspect the steel defects within 30 minutes at the production site. Furthermore, supersonic jet resonance enhanced multi-photon ionization time-of-flight mass spectrometry (Jet-REMPI-TOFMS) was applied for real-time observations of the naphthalene emission behavior for heated coal samples in N_2 gas flow using an electric tube furnace. It is suggested that naphthalene is formed by breaking the naphthyl group contained in thermally unstable sites of coals. Those techniques were applied for practical uses, and improved the production yield and energy conservation.
社団法人日本分析化学会の論文
2009-01-05