Wear-resisting sintering wind box branch pipe and online repair method

A bellows and pipe technology, which is applied to the production process of the main charge, can solve the problems of fast wear and high air leakage rate of the flue, and achieve the effects of preventing cracking and falling off, good ductility, and solving the problems of wear and service life.

Active Publication Date: 2016-04-20
MAANSHAN IRON & STEEL CO LTD
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0009] In order to overcome the problems of rapid wear and high air leakage rate of the existing sintering machine bellows branch pipe and flue, improve the economy of sintering production, break out of the vicious cycle of frequent plugging, and make up for the defects and deficiencies of the existing flue

Method used

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  • Wear-resisting sintering wind box branch pipe and online repair method
  • Wear-resisting sintering wind box branch pipe and online repair method
  • Wear-resisting sintering wind box branch pipe and online repair method

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[0024] In order to better understand the structure, function and effect of the present invention, the following preferred embodiments are used in conjunction with the accompanying drawings for detailed description.

[0025] by figure 1 The structure shown shows that the wind box branch pipe is the most worn place at the turning point due to the high-speed scouring of the sinter particles.

[0026] Such as image 3 , Bond the 30 mesh stainless steel wire mesh with SL8303 (500℃ high temperature resistant glue) on the 2 mesh stainless steel crimped screen, all the borders are glued, and the middle is glued with 10cm×10cm intervals to form a 2 mesh stainless steel crimped screen It is a rigid 30 mesh stainless steel wire composite wire mesh.

[0027] Preferably, the skeleton net 5 can also be a 30-mesh silica gel net.

[0028] In the area where the inner wall of the bellows branch pipe is easy to wear, use SL8303 high temperature glue at an interval of 10cm×10cm to connect 1cm 2 The high ...

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Abstract

The invention discloses a wear-resisting sintering wind box branch pipe and an online repair method. The wear-resisting sintering wind box branch pipe is characterized in that an easy-to-wear part of the wind box branch pipe is provided with a sealed cavity, wherein a framework network (5) is arranged in the sealed cavity; a pipeline for conveying colloid to the sealed cavity is further arranged in the sealed pipeline; and a high-temperature-resistant acid-resistant silica gel adhesive sticker body (6) is poured into the sealed cavity. According to the wear-resisting sintering wind box branch pipe disclosed by the invention, the characteristics of softness and good ductility of the adhesive sticker body are utilized to prevent a sprayed wear-resisting layer from a cracking and dropping phenomenon due to pipeline vibration, and the characteristics of lasting viscidity and easy supplementary nature of the adhesive sticker body are utilized, so that online repair is realized, and the problems of corrosion to the wear-resisting layer and the short service life are completely solved.

Description

technical field [0001] The invention relates to the production process of the main burden of blast furnace ironmaking, in particular to a wear-resistant sintered bellows branch pipe and an online repair method. Background technique [0002] The air leakage of the flue between the bellows of the sintering machine and the main exhaust fan usually accounts for about 10% of the main exhaust air volume of the sintering machine. There are common problems of serious air leakage, long-term cure, and high energy consumption in the process. Although a lot of manpower and material resources have been invested in plugging the leakage Overhaul, but new leaks continue to occur and fall into a vicious circle. The root cause is that the wear resistance of the bellows branch pipe and flue has not been effectively solved. Scouring the branch pipe of the bellows and the inner wall of the flue, the anti-vibration and erosion resistance of the existing wear-resistant spray coating on the inner w...

Claims

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Application Information

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IPC IPC(8): F27B21/00F27D17/00
CPCF27B21/00F27D17/002
Inventor 邬纳新于建辉方禹孙良骥
Owner MAANSHAN IRON & STEEL CO LTD
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