Method for reducing waste steel blowing loss in converter steelmaking process

• Main Authors: TAN XUEYANG, LI MINGJUN, ZHANG ZHAOPING, WANG YUCHUN, GUO DA, WANG XUEEN, LEI ZHOU, GAO SHAN, YU LIANGTAO, YANG PUQING
• Format: Patent
• Language: Chinese; English
• Published: 21.03.2023
• 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 reducing waste steel blowing loss in a converter steelmaking process, which comprises the following steps of: 1) installing a waste steel loading hopper above a converter rear tapping part, opening a chute communicated with the upper part of a steel ladle, and installing a gate valve at the chute and the loading hopper; (2) the waste steel is classified, stored and added according to types and lumpiness; (3) when converter steel scrap is loaded, steel scrap of the same type smelted in the converter is loaded into a steel scrap loading hopper above a steel tapping part; 4) dynamically adding the socially recovered crushed waste steel in the waste steel in the converter according to a waste steel structure model, wherein the total amount of the waste steel added in the converter is not changed; (5) after the alloy is added in the tapping process and the steel ladle bottom blowing mode selects large flow, opening a gate valve at the lower part of a scrap steel hopper, and add