A method for simultaneously dephosphorizing and extracting vanadium in a converter
A converter and dephosphorization agent technology, applied in the manufacture of converters, etc., can solve the problems of low vanadium extraction rate, complex composition, difficult preparation, etc., and achieve high vanadium extraction rate, simple operation, and environmental friendliness
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Embodiment 1
[0040] This example is used to illustrate the method for simultaneous dephosphorization and vanadium extraction in a converter provided by the present invention.
[0041]120t vanadium extraction converter, 140t vanadium-containing molten iron is charged into the molten iron tank, and the vanadium-containing molten iron into the furnace contains 4.5% by weight of C, 0.3% by weight of Mn, 0.09% by weight of P, 0.16% by weight of Si, and 0.3% by weight of V , 0.2% by weight of Ti, and the rest of the composition is Fe. The temperature of the molten iron containing vanadium entering the furnace is 1300°C. Oxygen is blown into the converter through an oxygen lance for blowing. The total amount of oxygen blowing is 11.43 standard cubic meters / t vanadium-containing molten iron, and the blowing time is 6 minutes (the flow rate of oxygen is 16,000 standard cubic meters / hour). Lime (the CaO content is 92 wt %, the burning loss is 8 wt %, and the particle size is 40 mm) was added during...
Embodiment 2
[0043] This example is used to illustrate the method for simultaneous dephosphorization and vanadium extraction in a converter provided by the present invention.
[0044] 120t vanadium extraction converter, 145t vanadium-containing molten iron is charged into the molten iron tank, and the vanadium-containing molten iron into the furnace contains 4.7% by weight of C, 0.5% by weight of Mn, 0.1% by weight of P, 1.0% by weight of Si, and 0.4% by weight of V , 0.2% by weight of Ti, and the rest of the composition is Fe. The temperature of the molten iron containing vanadium entering the furnace is 1285°C. Oxygen was blown into the converter through an oxygen lance for blowing. The total amount of oxygen blown was 8.02 standard cubic meters / t vanadium-containing molten iron, and the blowing time was 4.5 minutes (the flow rate of oxygen was 15,500 standard cubic meters / hour). After the vanadium-containing molten iron is fed into the furnace, lime (the CaO content is 95% by weight, t...
Embodiment 3
[0046] This example is used to illustrate the method for simultaneous dephosphorization and vanadium extraction in a converter provided by the present invention.
[0047] 120 tons of vanadium extraction converter, 138 tons of vanadium-containing molten iron is charged into the molten iron tank, and the vanadium-containing molten iron into the furnace contains 4.25% by weight of C, 0.21% by weight of Mn, 0.07% by weight of P, 0.21% by weight of Si, and 0.25% by weight of V , 0.25% by weight of Ti, and the rest of the composition is Fe. The temperature of the molten iron containing vanadium entering the furnace is 1350°C. Oxygen was blown into the converter through an oxygen lance for blowing. The total amount of oxygen blown was 13.95 standard cubic meters per t of vanadium-containing molten iron, and the blowing time was 7 minutes (the flow rate of oxygen was 16,500 standard cubic meters per hour). Lime (the CaO content is 90 wt %, the burning loss is 10 wt %, and the particl...
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