Method for producing chromium-containing high-carbon steel by using stainless steel dust

• Main Authors: ZHAI YOUYOU, YANG CHAO, JIANG JUN, HUANG WENSHENG, HU MING, YANG GANG, FAN WEI, WANG LIZHOU, ZHANG WEI
• Format: Patent
• Language: Chinese; English
• Published: 02.11.2021
• 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

The invention discloses a method for producing chromium-containing high-carbon steel by using stainless steel dust. The method comprises the following steps of adjusting the carbon content in molten steel and the oxygen content in the molten steel before refining in an LF ladle furnace; adjusting bottom blowing argon, and adding slag charge after the molten steel enters a ladle refining furnace; heating for the first time to adjust bottom blowing argon, and adding stainless steel dust briquettes and silicon iron; and heating for the second time to adjust bottom blowing argon, adding the slag charge, and adjusting the components to the target. Through adjustment and control of the bottom blowing flow in different stages of the refining process, the contact area between the steel slag can be fully increased, and the slag washing effect in the refining process is improved; a good dynamic condition is provided for diffusion of metal chromium reduced from the slag into the molten steel, and reduced Cr in the molte