Molten iron blowing desulfurization device

Abstract

The invention provides a molten iron blowing desulfurization device. The molten iron blowing desulfurization device comprises a desulfurization vehicle and a molten iron tank positioned above the desulfurization vehicle, and further comprises a liftable stirring and spraying device, wherein the stirring and spraying device is positioned over the molten iron tank and comprises a vertical stirring shaft and stirring blades positioned at the lower end of the stirring shaft; the stirring blades can ascend and descend between molten iron at the bottom of the molten iron tank and the space above themolten iron tank; the stirring and spraying device further comprises a feeding pipe and a plurality of horizontal L-shaped nozzles; the stirring shaft is provided with an air storage bin and an air distribution bin in the axial direction; an air inlet pipe is arranged on the air storage bin; a guide pipe is arranged in the air distribution bin, an upper end opening of the guide pipe communicateswith the air storage bin, and a lower end opening of the guide pipe communicates with the air distribution bin; a plurality of air spraying holes are formed in the side wall of the air distribution bin positioned in the molten iron tank; the feeding pipe penetrates through the air storage bin; and the multiple L-shaped nozzles are symmetrically arranged on the periphery of the feeding pipe along the center of the feeding pipe and are all positioned below the stirring blades. The molten iron blowing desulfurization device is compact in structure, the use efficiency of a desulfurizing agent is improved, and the desulfurization efficiency is high.

Description

technical field [0001] The invention relates to the technical field of molten iron treatment, in particular to a molten iron injection desulfurization device. Background technique [0002] Hot metal desulfurization equipment includes KR mechanical stirring equipment and injection desulfurization equipment. [0003] KR mechanical stirring is to put the cross-shaped stirring head poured with refractory material and baked into the molten iron ladle to a certain depth, and the vortex generated by its rotation, the weighed desulfurizer is added to the surface of the molten iron by the feeder, and is The vortex is involved in the molten iron to make the calcium oxide-based desulfurization powder fully contact and react with the molten iron to achieve the purpose of desulfurization. Its advantage is that the dynamic conditions are superior, it is beneficial to use cheap desulfurizers such as CaO, the desulfurization effect is relatively stable, the efficiency is high (desulfurizat...

AI Technical Summary

Problems solved by technology

[0005] In the prior art, the combined use of KR mechanical stirring desulfurization and injection desulfurization can improve the desulfurization effect of molten iron to a certain extent, but the respective advantages have not been fully utilized, and the efficient complementarity of the two cannot be formed.

Moreover, the structure of the KR mechanical stirring desulfurization equipment and the structure of the injection desulfurization equipment are superimposed, resulting in a complex structure of the molten iron desulfurization device, a small space, inconvenient operation and difficult maintenance

In addition, the existing desulfurization equipment generally has weak stirring force, single stirring direction, and insufficient stirring, which causes some desulfurization agents to float up into the slag without participating in desulfurization, and part of the desulfurization products do not float up sufficiently and remain in molten iron, resulting in poor desulfurization effect

Images