Vanadium extraction method of ultralow-silicon vanadium-titanium molten iron converter

• Main Authors: JIA HONGWEI, ZHANG LING, OUYANG CHENXI, CHEN DASHUANG, LI DUANPENG, ZOU RONG, DENG SHENGTAO
• Format: Patent
• Language: Chinese; English
• Published: 30.06.2020
• Subjects: CHEMISTRY; FERROUS OR NON-FERROUS ALLOYS; METALLURGY; METALLURGY OF IRON; PRETREATMENT OF RAW MATERIALS; PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL; PRODUCTION AND REFINING OF METALS; TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS

The invention relates to a vanadium extraction method of an ultralow-silicon vanadium-titanium molten iron converter and belongs to the technical field of vanadium-titanium ore smelting. According tothe crystallization characteristic and principle of vanadium slag, a silicon-containing slag adjusting material potassium feldspar is used for carrying out slag adjusting on ultralow-silicon molten iron, the vanadium extraction cold material type of the converter is adjusted, the bottom blowing gas supply strength is adjusted, the vanadium slag discharging manner is perfected, vanadium extractionfinal point control is adjusted, and the effects of improving the vanadium slag grade obtained after vanadium in the ultralow-silicon molten iron is extracted, reducing the iron taking amount of the vanadium slag and improving the quality of the vanadium slag are achieved. The method is simple and reliable, the problems that the vanadium slag grade is low, crystallization is difficult, and iron taking is severe are solved,