Open AccessLance Design for Scrap Melting Aggregates
Author(s) -
Ladislav Kovář,
Pavel Novák,
Tomáš Hapla
Publication year - 2021
Publication title -
tehnički glasnik
Language(s) - English
Resource type - Journals
eISSN - 1848-5588
pISSN - 1846-6168
DOI - 10.31803/tg-20200224122509
Subject(s) - scrap , homogenization (climate) , nozzle , materials science , blowing agent , process engineering , mechanical engineering , metallurgy , engineering , composite material , biodiversity , ecology , polyurethane , biology
Metallurgical aggregates, which are used for metal waste melting, are equipped with lances for blowing gaseous media. These gaseous media allow especially scrapmelting and intense homogenization of the resulting melt. In connection with this, the blowing systems are developed both for blowing of gaseous media itself on the bath surfaceor into the melt and for blowing of the gas mixture with powdered substances. When designing the blowing systems and the individual lance tips and nozzles, it is necessary torespect certain criteria, the derivation of which is based on long-term experience and acquired knowledge in this field. The submitted paper summarizes the designrecommendations, including the determination of the selected design characteristics of the nozzles for blowing gaseous media on the bath surface in the metallurgical aggregate.These design characteristics help designers and engineers to design systems that meet the high demands on quality, efficiency and operational reliability.