Turbine type stirring device for melt desulfuration

Abstract

The invention belongs to the field of pretreatment and desulfuration equipment of molten iron, and particularly relates to a turbine type stirring device for melt desulfuration. The turbine type stirring device comprises a stirring body of which the lower part is equipped with stirring blades (1), and a first hub (201) and a second hub (202) are horizontally and fixedly arranged on the upper and lower sides of the stirring blades (1) sequentially; an injection pipe (4) is fixedly arranged at the middle part of a stirring shaft (3) in a sleeving manner; a branch pipe (5) is transversely and fixedly arranged in an inner cavity of the first hub (201); one port of the branch pipe (5) communicates with a lower port of the injection pipe (4); the other port of the branch pipe (5) communicates with an injection hole of the first hub (201); and a refractory material protection layer (6) is fixedly arranged at the outer part of the stirring body. According to the turbine type stirring device, the structure is simple, the stirring force is high, and the desulfuration efficiency is high.

Description

technical field [0001] The invention belongs to the field of molten iron pretreatment desulfurization equipment, and in particular relates to a melt desulfurization turbine type stirring device. Background technique [0002] With the rapid development of modern industrial production and science and technology, the requirements for steel quality are increasing day by day. For example, in order to avoid internal cracks in billets and obtain good surface quality, the sulfur content of ordinary steel is required to be less than 0.020%; in order to make structural steel have uniform mechanical properties, the sulfur content in steel is required to be less than 0.010%; in order to make oil and Natural gas pipelines, steels for petroleum refining equipment, steels for offshore oil production platforms, low-temperature steels, thick ship plate steels, and aviation steels have properties such as hydrogen-induced crack resistance, more uniform mechanical properties, and higher impact ...

AI Technical Summary

Problems solved by technology

However, the existing KR method mechanical stirring device generally has a single direction of stirring force and insufficient stirring force, which will cause some desulfurization agents to float up into the slag without participating in desulfurization, and some desulfurization products are still in the molten iron due to insufficient floatation. To achieve the desulfurization effect, the stirring force is weak, resulting in slow desulfurization reaction speed and low desulfurization efficiency

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