Verfahren zum Verblasen von NE-Metall-Schrott und Hütten-Zwischenprodukten

摘要

According to the invention oxygen-enriched air is blown into the melt through compound underbath nozzles, oxygen or oxygen-enriched air being blown in through the inner pipe and air through the outer pipe. The flow rate of the two gases blown into the melt is set to ensure that the two gases can mix only at a distance from the mouth of the nozzle. The oxygen content of the gas mixture is 23-80 % by volume.