Control method of top-blowing oxygen supply process in converter smelting process

• Main Authors: WANG JIE, ZHAO JINXUAN, YANG LIBIN, ZHAO GE, DAI YUXIANG, WANG CHENGYI, YANG YONG, CAI WEI
• Format: Patent
• Language: Chinese; English
• Published: 16.04.2024
• 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 relates to a control method for a top-blowing oxygen supply process in a converter smelting process, belongs to the technical field of ferrous metallurgy, and aims to solve the problem that the lance position and flow of an existing top-blowing oxygen lance cannot be automatically adjusted in the converter smelting process. A control method of a top-blowing oxygen supply process in a converter smelting process comprises the following steps: starting a heat number, and finishing initial condition data acquisition in the converter smelting process; lowering an oxygen lance, starting oxygen blowing, simultaneously monitoring the contents of carbon, silicon and manganese in the molten iron, calculating an oxygen supply process conversion point, and forming oxygen supply process conversion point judgment; and adjusting the lance position and the oxygen flow of the top blowing oxygen lance according to the oxygen supply process conversion point and the adjusting rule. Automatic adjustment of the lance