Stirring head for use in molten iron desulfurization

Abstract

The invention belongs to a special stirring device for the metallurgical and foundry industry and particularly relates to stirring head for use in molten iron desulfurization. The stirring head comprises a flange connecting piece (1), a stirring shaft (2) fixedly connected with the flange connecting piece (1), an inner tube (3) arranged in the stirring shaft (2), a stirring blade (4) fixedly connected with the lower part of the stirring shaft (2), and a refractory material layer (5) arranged between the stirring shaft (2) and the stirring blade (4), wherein the bottom of the inner tube (3) has a through hole (6); and the inner cavity of the inner tube (3) is communicated with a cylindrical cavity (7) formed by the inner wall of the stirring shaft (2) and the inner tube (3) through the through hole (6). The cross section of the stirring blade (4) has a 'cross' structure, and the thickness a of the front (41) of the refractory material layer of the stirring blade (4) is greater than thethickness b of the back of the refractory material layer of the stirring blade (4). The stirring head is simple in structure, long in service life and feed from sulfur slag accumulation.

Description

technical field [0001] The invention belongs to a special stirring device for the metallurgical casting industry, in particular to a stirring head for molten iron desulfurization. Background technique [0002] KR (Kambara Reactor) desulfurization method is a method of desulfurization of molten iron using mechanical stirring. When iron (steel) water is desulfurized in the ladle, a certain amount of desulfurizer is added, and it is required to fully mix and react with iron (steel) water. This just needs to carry out mechanical stirring to iron (steel) water. Due to the excellent desulfurization kinetics of KR (Kambara Reactor) stirring desulfurization, it has attracted extensive attention from domestic and foreign iron and steel enterprises. [0003] At present, there is a mechanical stirring device, the stirring head is made of refractory material, and the shape is cross-shaped, that is, four stirring blades are arranged around the stirring head, and the iron (steel) water ...

AI Technical Summary

Problems solved by technology

[0003] At present, there is a mechanical stirring device, the stirring head is made of refractory material, and the shape is cross-shaped, that is, four stirring blades are arranged around the stirring head, and the iron (steel) water is stirred by rotation, but the above stirring head is due to Lack of necessary heat exchange structure, so that the working life of the stirring head is affected to a certain extent

In addition, there are many problems in the structural design of the existing mixing head. For example, the top of the mixing blade is designed in a horizontal plane, which is also very easy to cause the occurrence of sulfur slag accumulation.

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