Development of Manufacturing Technology for High-Sulfur Steel with a High Aluminum Content in the Volga Pipe Plant Electric-Melting Workshop

• Published in: Metallurgist (New York) Vol. 63; no. 1-2; pp. 149 - 155
• Main Authors: Bozheskov, A. N., Toptygin, A. M., Longinov, A. M., Tinyakov, V. V.
• Format: Journal Article
• Language: English
• Published: New York Springer US 01.05.2019; Springer; Springer Nature B.V
• Subjects: Aluminum; Assimilation; Calcium sulfides; Casting (Metal); Characterization and Evaluation of Materials; Chemistry and Materials Science; Conferences, meetings and seminars; Continuous casting; Iron and steel making; Ladle metallurgy; Materials Science; Melts; Metallic Materials; Nozzles; Recycling; Slag; Sulfides; Sulfur; Sulfur compounds; Sulfur content; Technology; calcium sulfide; steel continuous casting; nonmetallic inclusions; slag-forming mixture; steel with a high sulfur and aluminum content; submerged nozzle; steel extra-furnace treatment; assimilation
• ISSN: 0026-0894; 1573-8892
• DOI: 10.1007/s11015-019-00804-z

Continuous casting of steel with a high sulfur content is difficult due to clogging of the submerged nozzle. Physicochemical calculations and studies of a submerged nozzle inner cavity showed that clogging occurs due to formation of calcium sulfide and a low slag assimilation capacity. With serial melting of steel there is entry of slag into the tundish. Development of a slag forming mixture with whose application in the steel-pouring ladle there is formation of slag of this composition, which enters the tundish without worsening slag assimilation properties. Use of this development makes it possible to reduce submerged nozzle clogging and recycling of melts considerably due to stopping casting.