Combined stirrer used for mechanical stirring desulfurization of molten iron and manufacturing method of combined stirrer

A technology of mechanical stirring and agitator, which is applied in the field of combined agitator and its preparation and desulfurization by mechanical stirring of molten iron, can solve the consumption cost of agitator, environmental pollution and safety hazards, and the high cost of agitator preparation, which aggravates the desulfurization of molten iron. and other problems, so as to ensure the quality of preparation and performance, reduce the cost of preparation and use, and ensure the function of use and mixing and mixing characteristics.
CN105907913AActive Publication Date: 2016-08-31武汉钢铁有限公司
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
武汉钢铁有限公司
Publication Date
2016-08-31

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Abstract

The invention discloses a combined stirrer used for mechanical stirring desulfurization of molten iron and a manufacturing method of the combined stirrer. The combined stirrer comprises a stirring shaft and a connecting flange arranged over the stirring shaft. The stirring shaft is composed of a shaft section and a blade section from top to bottom. A plurality of composite stirring blades are symmetrically arranged on the outer wall of the blade section. Each composite stirring blade comprises a metal framework. The stirring shaft comprises an air cooling pipe and a stirring shaft metal core. A metal end cap is arranged at the bottom of the inner wall of the stirring shaft metal core. A plurality of connecting metal cores are evenly distributed on the outer wall of the stirring shaft metal core of the blade section in the circumferential direction in a welded mode. Each connecting metal core is welded to the corresponding metal framework along the radial outer side of the stirring shaft. According to the structure and manufacturing method of the combined stirrer, and the comprehensive purposes of simple structure, easy, convenient and efficient manufacturing, high cyclic utilization rate of the stirrer, low cost, excellent desulfurization stirring and mixing property and the like can be achieved.
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Description

technical field

[0001] The invention relates to the field of molten iron pretreatment, in particular to a combined stirrer for mechanical stirring desulfurization of molten iron and a preparation method thereof. Background technique

[0002] The document "External desulfurization of molten iron, Shanxi Metallurgy, 2007, No1" reported that molten iron is the basic raw material for molten steel smelting, and its chemical composition and physical properties determine the quality of steel products and the benefits of enterprises to some extent. Therefore, Since the 1970s, people began to pay attention to the development of molten iron pretreatment technology, and continuously improved its technology and methods to remove harmful elements in molten iron. In addition to sulfur-containing steel, sulfur is one of the main harmful elements in steel, but in the process of blast furnace ironmaking, it is necessary to increase the alkalinity of slag and furnace temperature, which will r...

Claims

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