Method for simultaneously dephosphorizing and extracting vanadium through converter
A converter and dephosphorization agent technology, applied in the manufacture of converters, etc., can solve problems such as poor preparation, low vanadium extraction rate, complex composition, etc., and achieve simple operation, high vanadium extraction rate, and environmental friendliness
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Embodiment 1
[0040] This example is used to illustrate the method for simultaneously dephosphorizing and extracting vanadium in a converter provided by the present invention.
[0041]120 tons of vanadium extracting converter, 140t of vanadium-containing molten iron in the molten iron tank, containing 4.5 wt% of C, 0.3 wt% of Mn, 0.09 wt% of P, 0.16 wt% of Si, and 0.3 wt% of V , 0.2% by weight of Ti, and the rest is Fe. The temperature of vanadium-containing molten iron 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 of vanadium-containing molten iron, and the blowing time is 6 minutes, (the flow rate of oxygen is 16,000 standard cubic meters / hour). Add lime (CaO content: 92% by weight, loss on ignition: 8% by weight, particle size: 40mm) when blowing for 0.5min, and the amount added is 12.5kg / t of vanadium-containing molten iron. Add pig iron (containing 4.52% by we...
Embodiment 2
[0043] This example is used to illustrate the method for simultaneously dephosphorizing and extracting vanadium in a converter provided by the present invention.
[0044] 120 tons of vanadium-extracting converter, the molten iron tank is filled with 145t of vanadium-containing molten iron, which 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 is Fe. The temperature of vanadium-containing molten iron entering the furnace is 1285°C. Oxygen is blown into the converter through an oxygen lance for blowing. The total amount of oxygen blowing is 8.02 standard cubic meters / t of vanadium-containing molten iron, and the blowing time is 4.5 minutes (the flow rate of oxygen is 15,500 standard cubic meters / hour). After the vanadium-containing molten iron is put into the furnace, lime is added (the CaO content is 95% by weight, the burning loss is 5% by weight, and the particle size ...
Embodiment 3
[0046] This example is used to illustrate the method for simultaneously dephosphorizing and extracting vanadium in a converter provided by the present invention.
[0047] 120 tons of vanadium extracting converter, 138t of vanadium-containing molten iron in the molten iron tank, containing 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 is Fe. The temperature of vanadium-containing molten iron entering the furnace is 1350°C. Oxygen is blown into the converter through an oxygen lance for blowing. The total amount of oxygen blowing is 13.95 standard cubic meters / t of vanadium-containing molten iron, and the blowing time is 7 minutes (the flow rate of oxygen is 16,500 standard cubic meters / hour). Add lime (CaO content: 90% by weight, loss on ignition: 10% by weight, particle size: 48mm) when blowing for 1 minute, and the amount added is 10.71kg / t of vanadium-containing molten ...
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