Microbubble molten steel purification device and purification method
A purification device and micro-bubble technology, applied in the field of iron and steel smelting, can solve the problems of limited degree of micro-bubble, limited purification effect, and difficulty in avoiding large bubbles, etc., and achieve the effect of increasing the rotational speed, reducing the rotational resistance and improving the purification effect.
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Embodiment 1
[0031] The test steel is pipeline steel
[0032] (1) Transport the ladle containing the molten steel to be treated to the microbubble purification station.
[0033] (2) Argon gas is blown at the bottom of the ladle, and the flow rate is controlled at 200L / min, and there is no steel slag in the middle area of the ladle.
[0034] (3) Lower the rotating shaft, the stirring paddle and the protective cylinder to the inside of the molten steel until the top cover 10 is in contact with the upper edge of the ladle.
[0035] (4) Blow in argon gas from the argon gas inlet pipe to press the liquid steel surface in the protective cylinder to a low place, and the liquid level is 120mm away from the upper edge of the tapping hole on the protective cylinder.
[0036] (5) Control the flow rate of low-blown argon gas in the ladle at 30 L / min, start the motor to drive the rotating shaft to rotate, and control the speed at 300 rpm; the processing time is 8 minutes.
[0037] (6) After the tre...
Embodiment 2
[0040] The test steel is IF steel
[0041] (1) Transport the ladle containing the molten steel to be treated to the microbubble purification station.
[0042] (2) Argon gas is blown at the bottom of the ladle, and the flow rate is controlled at 300L / min, and there is no steel slag in the middle area of the ladle.
[0043] (3) Lower the rotating shaft, the stirring paddle and the protective cylinder to the inside of the molten steel until the top cover 10 is in contact with the upper edge of the ladle.
[0044] (4) Blow in argon gas from the argon gas inlet pipe to press the liquid steel surface in the protective cylinder to a low place, and the liquid level is 150mm away from the upper edge of the tapping hole on the protective cylinder.
[0045] (5) Control the flow rate of low-blown argon gas in the ladle at 80 L / min, start the motor to drive the rotating shaft to rotate, and control the rotating speed at 800 rpm; the processing time is 5 minutes.
[0046] (6) After the ...
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Abstract
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