Molten iron desulphurization device

Abstract

The invention belongs to the technical field of molten iron pretreatment, and particularly relates to a molten iron desulphurization device. The molten iron desulphurization device comprises a molteniron tank car, a molten iron tank and a spray gun capable of descending into the molten iron tank. The molten iron tank car comprises a tip-over table, a frame and a tip-over mechanism used for driving the molten iron tank to tip over. The molten iron tank sits on the tip-over table. One end of the tip-over table and the frame are hinged, and the other end of the tip-over table is connected with the frame through the tip-over mechanism. Rotary electromagnetic stirrers are mounted at the position, corresponding to the molten iron tank, of the tip-over table. According to the molten iron desulphurization device, molten iron flows in the molten iron tank through the rotary electromagnetic stirrers, the defect that the molten iron dynamic condition of a blowing desulfurization method is poor is remedied, a desulfurization agent on the upper portion can be rolled into the molten iron easily, the desulfurization speed is increased, and the desulfurization effect is improved; the rotary electromagnetic stirrer is arranged on the tip-over table, and lifting and tipping over of the molten iron tank are not influenced; and through the tip-over mechanism, the molten iron tank can tip over more easily, conveniently and reliably.

Description

technical field [0001] The invention belongs to the technical field of molten iron pretreatment, and in particular relates to a molten iron desulfurization device. Background technique [0002] With the continuous improvement of steel quality requirements in social development, hot metal desulfurization has become one of the indispensable links in steel production. Mechanical agitation desulfurization and injection desulfurization are the two main methods of molten iron desulfurization at present: the mechanical agitation desulfurization method is to immerse a refractory-lined agitator in the molten iron tank to rotate and stir the molten iron to promote the desulfurization reaction between the molten iron and the desulfurizer. To achieve the purpose of desulfurization of molten iron; the injection desulfurization method is to use high-pressure gas as a carrier to spray the desulfurizer into the molten iron from the spray gun, and the carrier gas simultaneously plays the rol...

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Problems solved by technology

[0003] Although the mechanical stirring desulfurization method has good desulfurization effect, low production cost and short processing time, the disadvantage is that the temperature drop of molten iron is large and the iron loss is large; while the advantage of the injection desulfurization method is that the investment cost of equipment is low, the temperature drop of molten iron is small, and the iron loss is large. Small, the disadvantage is that the dynamic conditions are poor, the desulfurizer and molten iron cannot fully react, the utilization rate of the desulfurizer is low, and the unit consumption cost of the desulfurizer is high

In summary, the mechanical stirring desulfurization method and the injection desulfurization method have their own advantages and disadvantages, and both have certain room for improvement

The invention patent with the publication number CN106086312A discloses a molten iron desulfurization device and method, a desulfurization method combining mechanical stirring and blowing, which includes a stirring device, a lifting device, a lifting drive mechanism, and a rotating drive mechanism. On the basis of the device, a set of injection system is added, including injection tank, conveying pipe, air pipe, etc. Although it makes up for the shortcomings of mechanical stirring desulfurization method and injection desulfurization method, the equipment becomes more complicated and the equipment investment is higher

The invention patent with the publication number CN107190118A discloses a desulfurization device and method for injecting powder to rotate molten iron. A set of electromagnetic stirring device is added to the molten iron tank car to improve the dynamic conditions of the molten iron

Since the electromagnetic stirring device is arranged in the vertical direction outside the molten iron tank, and the magnetic poles of the agitator are fixed on the head of the clamping hydraulic cylinder, the magnetic poles are not only easily damaged, but also due to factors such as the irregular shell of the molten iron tank, the stirring effect will be reduced. drop, and the structure of the tipping device of the molten iron tank is complicated during the slag removal operation, and the investment in equipment is relatively high

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