![Sample our Economics, Finance,Business & Industry journals, sign in here to start your access, latest two full volumes FREE to you for 14 days]({"type":"image" , "src" : "/sda/5931/TOC-Subject-Sample-2021-Economics-Finance-Business-Industry.jpg"})
ABSTRACT
In the tapping process of electric arc furnace, aluminium is usually charged into the ladle to remove the oxygen, which increased the cost and reduced steel cleanliness. Recently, a new technology called Tapping Online Refining (TOR) has been developed to solve the problem of peroxidation and excessive inclusions. In this study, both numerical simulation and water experiment were developed to investigate the behaviour of carbon powder supplied with nitrogen into the tapping flowing, the mixing time and powder utilization efficiency under various injection angles. The results showed that when the lance angle was 50°, the macro movement of carbon powder particles could create the best kinetic conditions. Industrial experiment was carried out in a 65t consteel EAF, and showed that, compared with traditional process, the TOR process can increase the alloy utilization by 3–5% and reduce over 40% of the initial precipitation deoxidation inclusions.
Acknowledgements
The authors would like to express their gratitude to the support by the National Natural Science of China [grant numbers 51604022, 51734003 and 52004023].
Disclosure statement
No potential conflict of interest was reported by the author(s).