High-performance stirrer used for molten iron mechanical-stirring desulfuration

A mechanical stirring and agitator technology, applied in the field of molten iron pretreatment, can solve the problems of poor kinetic conditions, uneven mixing and dispersion of desulfurizers, etc. Effect

Inactive Publication Date: 2016-09-21
武汉钢铁有限公司
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is based on the domestic and foreign KR stirring desulfurization stirring structure parameters on the influence theory and experimental research results of stirring mixing characteristic parameters and the vortex entrainment characteristics of the conventional single-layer cross-blade stirrer KR mechanical stirring desulfurization, aiming at

Method used

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  • High-performance stirrer used for molten iron mechanical-stirring desulfuration
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  • High-performance stirrer used for molten iron mechanical-stirring desulfuration

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Embodiment 1

[0021] likefigure 1 , 3 As shown, a high-performance stirrer for mechanical stirring and desulfurization of molten iron is mainly composed of a stirring shaft 1 and a stirring blade 2 . The stirring blade 2 is composed of an upper stirring blade 2.1 and a lower stirring blade 2.2, the number of the upper stirring blade 2.1 and the lower stirring blade 2.2 is 2, and they are evenly distributed around the stirring shaft 1 circumferential direction; the upper stirring blade 2.1 and the lower stirring blade The mixing blades 2.2 intersect in a cross, and the ratio of the layer distance L between the upper stirring blade 2.1 and the lower stirring blade 2.2 to the width b of the stirring blade is 0.10-0.75. The width b of the stirring blade and other structural parameters of the agitator are the same as those of the conventional KR agitator, and the preparation material and process of the agitator are also the same as those of the conventional KR agitator.

[0022] The stirring bl...

Embodiment 2

[0024] like figure 2 , 4 As shown, a high-performance stirrer for mechanical stirring and desulfurization of molten iron is mainly composed of a stirring shaft 1 and a stirring blade 2 . The number of the upper stirring blades 2.1 and the lower stirring blades 2.2 is 3, and the upper stirring blades 2.1 and the lower stirring blades 2.2 are arranged alternately. The ratio of the interlayer spacing L between the upper stirring blades and the lower stirring blades to the width b of the stirring blades is 0.3-0.50, and the others are the same as in Example 1.

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Abstract

The invention discloses a high-performance stirrer used for molten iron mechanical-stirring desulfuration. The stirrer comprises a stirring shaft and stirring blades. The stirring blades are divided into the upper layer stirring blades and the lower layer stirring blades. The upper layer stirring blades and the lower layer stirring blades are all evenly distributed in the circumferential direction of the stirring shaft. The number of the upper layer stirring blades is the same as that of the lower layer stirring blades. The upper layer stirring blades and the lower layer stirring blades are distributed in a staggered manner. By means of the high-performance stirrer, the aims of enlarging the desulfurizing agent stirring and mixing area, prolonging the entrainment floating circulation stroke of a desulfurizing agent in molten iron and improving the desulfurizing agent particle mixing dispersion degree and the molten iron desulfuration efficiency can be achieved during actual production.

Description

technical field [0001] The invention relates to the field of molten iron pretreatment, in particular to a high-performance stirrer for mechanical stirring desulfurization of molten iron. 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 reduce the technical and e...

Claims

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Application Information

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IPC IPC(8): C21C1/02
CPCC21C1/02
Inventor 欧阳德刚但斌斌胡清明李明晖罗安智曾彤
Owner 武汉钢铁有限公司
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