Method for extracting vanadium through asymmetric bottom blowing of CO2 in converter
An asymmetric, converter technology, applied in the field of vanadium metallurgy, can solve the problems of incomplete melting, fast rhythm, ineffective cooling effect, etc., and achieve the effect of reducing residual vanadium content and restraining the temperature of molten pool.
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Embodiment 1
[0023] Mix molten iron with a V content of 0.28-0.34% into the converter, control the temperature of the molten iron at 1260-1320 °C, and distribute the breathable bricks in the zone I, zone II and zone III of the bottom of the converter. The number of breathable bricks matches the furnace capacity, and zone I , The breathable bricks in zone III are distributed symmetrically, the breathable bricks in zone II are distributed asymmetrically, and the included angle α in zone II is 80°. After shaking the furnace, blow CO at the bottom of the converter 2 , in which, CO 2 The flow rate is 100Nm 3 / min, blowing CO at the bottom of a single ventilating brick in Zone II 2 The flow rate is 130Nm 3 / min, blowing CO at the bottom of a single ventilating brick in Zone III 2 The flow rate is 160Nm 3 / min, while blowing O with an oxygen lance 2 , Oxygen supply strength of oxygen lance 1.5~3.0Nm 3 / min·t iron, lance position control 1.7~2.0m, add 20~27kg / t iron coolant within 2 minutes...
Embodiment 2
[0025] Mix molten iron with a V content of 0.28-0.34% into the converter, control the temperature of the molten iron at 1260-1320 °C, and distribute the breathable bricks in the zone I, zone II and zone III of the bottom of the converter. The number of breathable bricks matches the furnace capacity, and zone I 1. The breathable bricks in zone III are distributed symmetrically, and the breathable bricks in zone II are distributed asymmetrically, and the included angle α in zone II is 100°. After shaking the furnace, blow CO at the bottom of the converter 2 , in which, CO 2 The flow rate is 120Nm 3 / min, blowing CO at the bottom of a single ventilating brick in Zone II 2 The flow rate is 150Nm 3 / min, blowing CO at the bottom of a single ventilating brick in Zone III 2 The flow rate is 180Nm 3 / min, while blowing O with an oxygen lance 2 , Oxygen supply strength of oxygen lance 1.5~3.0Nm 3 / min·t iron, lance position control 1.7~2.0m, add 20~27kg / t iron coolant within 2 m...
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