Secondary air main pipe for steel-clad belt type pellet baking energy-saving combustion furnace

Abstract

The invention provides a secondary air main pipe for a steel-clad belt type pellet baking energy-saving combustion furnace. The secondary air main pipe is characterized by comprising a high-aluminum fiber layer, a white steel Y-shaped anchoring nail, a high-temperature bonding agent layer, an acid-resisting spray paint layer and a furnace casing. Acid-resisting spray paint adopted on the outermost layer prevents refractory materials of a main pipe lining from decreasing and falling. When the high-aluminum fiber layer is installed, external force is used for compressing and compacting the fiber layer, gaps are reduced to the greatest extent, and the inner side is firmly bonded to the furnace casing of the inner side of the main pipe through the high-temperature bonding agent layer. According to the secondary air main pipe for the steel-clad belt type pellet baking energy-saving combustion furnace, when a high-temperature bonding agent is adopted for installing the high-aluminum fiber layer (the long-term use temperature is 1200 DEG C), the fiber layer is compressed and compacted through the external force, the gaps are reduced to the greatest extent, the inner side is firmly bonded to the furnace casing of the inner side of the main pipe through the high-temperature bonding agent, even if the acid-resisting spray paint on the outermost layer falls after working for a long time, the high-aluminum fiber layer still has a function, and thus the main pipe will not be burnt out.

Description

technical field [0001] The invention relates to a secondary air main pipe in a roasting furnace, in particular to a secondary air main pipe of a steel-clad belt-type pellet roasting energy-saving roasting furnace, which belongs to the field of mineral equipment. Background technique [0002] In the roasting furnace, the air temperature in the secondary air main pipe reaches 1000°C, and the temperature of the secondary air main pipe shell also increases. In actual operation, the secondary air temperature exceeds 850°C for a long time, and the supervisor often burns out. Caused the trouble that roasting furnace will often overhaul and replace secondary air main pipe in practical application, makes working efficiency greatly reduce, influences production. The secondary air in the existing secondary air main pipe has strong impact and friction on the lining material and there is no corresponding effective protection measure, thus affecting the service life of the secondary air ...

AI Technical Summary

Problems solved by technology

It has caused the trouble of frequent maintenance and replacement of the secondary air supervisor in the actual application of the roaster, which greatly reduces the work efficiency and affects the production

The secondary air in the existing secondary air main pipe has strong impact and friction on the lining material and there is no corresponding effective protection measure, thus affecting the service life of the secondary air main pipe

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