Method for preventing mushroom head blockage in converter steel making process

• Main Authors: WEN CHUNYOU, ZHANG ZHENSHAN, MA DEBIN, SHEN MINGGANG, AO GUANGWU
• Format: Patent
• Language: Chinese; English
• Published: 26.10.2011
• 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 method for preventing mushroom head blockage in a converter steel making process, belonging to the technical field of metallurgy and steel making. The method is implemented by mounting a stainless steel tube at the center of a circumferential seam in a bottom lance and introducing oxygen; a thermocouple is arranged between the stainless steel tube and the circumferential seam so as to measure the temperature of the bottom lance; the lower the temperature of the bottom lance is, the smaller the quantity of gas blown from the bottom is, which indicates that as the formed mushroom head becomes bigger, more oxygen can be introduced to reduce the volume of the mushroom head; and if the formed mushroom head becomes smaller, less oxygen can be introduced, so that the mushroom head on the bottom lance can be kept at proper dimension. The stainless steel tube is mounted at the center of the circumferential seam of the bottom lance so as to introduce oxygen, and the exothermic reaction betwee