Taiyo Nippon Sanso develops SCOPE-Jet for EAF steelmaking processes


The SCOPE-Jet Swing developed by Taiyo Nippon Sanso Corporation (TNSC) adds a swing function to the energy-saving supersonic oxygen (O2) jet SCOPE-Jet by applying the self-induced oscillation phenomenon of fluids.

O2 burners rapidly entered widespread use in the electric arc furnace (EAF) steelmaking processes in the 1960s and now are installed and used in many EAFs. The function of O2 burners in EAF is to promote melting by applying heat to the cold spots within the furnace and they are used mainly during the melting stage to melt solid iron scrap.

In recent years, proposals have been made to use burner lances that form flames of O2 gas blown at supersonic speeds, significantly suppressing the attenuation of the speed and concentration of O2 gas. Using these burner lances enables omitting direct application of O2 on molten steel as had conventionally been performed using exhaust-type lances during refining, and they have made EAF operations efficient.

TNSC developed the SCOPE-Jet high-speed O2 lance for the EAF steelmaking process in 2001. In December 2017, the company developed a new type of SCOPE-Jet with enhanced performance that also supports low pressure, low-calorie fuels.

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