Method for preventing converter oxygen lances from adhering to steel slag

• Main Authors: LIU CHENG, WANG JINXING, XING JIANJUN, ZHANG YAODONG, WU YUCHEN, LI SONGLIN
• Format: Patent
• Language: Chinese; English
• Published: 26.04.2017
• Subjects: CHEMISTRY; METALLURGY; METALLURGY OF IRON; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

A method for preventing converter oxygen lances from adhering to steel slag belongs to the technical field of a converter steel-making method and is used for preventing the converter oxygen lances from adhering to the steel slag. According to the technical scheme of the invention, two oxygen lances are used alternatively on line when steel in the same converter is smelted; one oxygen lance is used for blowing nitrogen, splashing slag and protecting the converter and the other one is used for blowing oxygen and smelting the steel; as for the oxygen lance used for blowing the nitrogen, splashing the slag and protecting the converter, the slag which the oxygen lance adheres to is automatically scraped by an on-line slag scraper after the slag splashing is finished and in the lance ascending process; and as for the oxygen lance used for blowing the oxygen and smelting the steel, an oxygen lance spray-coating device is used for automatically spray-coating anti-adhesion fire-resistant coating on the oxygen lance in