Multi-blade molten iron desulphurization stirring device

Abstract

The invention belongs to the field of desulphurization devices in the metallurgy casting industry and in particular relates to a multi-blade molten iron desulphurization stirring device. The multi-blade molten iron desulphurization stirring device comprises a flange connecting piece (1), a stirring shaft (2) fixedly connected with the flange connecting piece (1) and a stirring blade (4) fixedly connected with the lower part of the stirring shaft (2); spiral blades are fixedly arranged at the upper part of the stirring blade (4); an auxiliary stirring blade (6) is fixedly arranged at the bottom of the stirring blade (4); and a longitudinal deflection angle a of the vertical face of the stirring blade (4) is more than or equal to 10 degrees and less than or equal to 20 degrees. The multi-blade molten iron desulphurization stirring device provided by the invention is simple in structure, low in cost and long in service life, and a stirring head can operate under a low rotating speed condition.

Description

technical field [0001] The invention belongs to the field of desulfurization devices in the metallurgical casting industry, and in particular relates to a multi-blade molten iron desulfurization stirring device. Background technique [0002] With the continuous improvement of the market's requirements for steel quality, the requirements for high strength, low temperature toughness, cold formability and welding performance of steel are becoming more and more stringent. In order to meet this requirement of the market, iron and steel industries all over the world are working hard to improve the quality of steel by reducing impurities in steel, especially reducing the sulfur content in steel. [0003] KR (Kambara Reactor) desulfurization method is a method of desulfurization of molten iron using mechanical stirring. When the 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 the iron (steel)...

AI Technical Summary

Problems solved by technology

[0004] 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-mentioned stirring head is desulfurized. The effect is not ideal. In order to achieve the corresponding desulfurization technical indicators, the stirring head is often operated at a relatively high speed, which seriously affects the service life of the system.

Images