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

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...

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 system wear-resistant technology, Invent a new method of wear-resistant treatment for sintered bellows branch pipes and flues that is simple and practical, easy to operate, obvious in effect, anti-seismic and wear-resistant, long-lived and efficient, solves industry problems and fills in gaps in the field

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