Smelting technology of low-sulfur steel for thick plates during whole-course bottom blowing nitrogen production of converter

• Main Authors: ZHOU JINMING, ZHU ZHIYUAN, WEI SHANGHAO, LV YANCHUN, LIU JINGANG, ZHANG XIANG, QIN DENGPING, SUN SHUOMENG, WANG ZHIGANG, YANG RONGGUANG, SHI ZHIQIANG, WANG XING
• Format: Patent
• Language: Chinese; English
• Published: 17.04.2013
• Subjects: CASTING; CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES; CHEMISTRY; METALLURGY; METALLURGY OF IRON; PERFORMING OPERATIONS; POWDER METALLURGY; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; TRANSPORTING; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS

The invention provides a smelting technology of low-sulfur steel for thick plates during whole-course bottom blowing nitrogen production of a converter, and belongs to the technical field of low-sulfur steel smelting with converters. The smelting technology mainly comprises the steps of converter smelting, an LF (ladle) furnace refining, and continuous caster pouring, and the whole-course bottom blowing nitrogen of the converter is adopted. The smelting technology has the advantages that when the low-sulfur steel for the thick plates is produced, the bottom blowing cost of the converter smelting is lowered, and the nitrogen content of liquid steel can be controlled below 80ppm.