Fire-resistant liner for warm air pipeline and paving method thereof

Abstract

The invention belongs to the technical field of fire-resistant material spraying and especially relates to a fire-resistant liner for a warm air pipeline and a paving method thereof. The fire-resistant liner comprises the warm air pipeline and is characterized by comprising a set of anchoring nails, a fire-resistant fiber felt and a spraying coating layer, wherein the anchoring nails are welded with an inner wall of the warm air pipeline; the fire-resistant fiber felt penetrates through the anchoring nails and is grafted with the inner wall of the warm air pipeline; and the spraying coating layer is sprayed and coated on the surface of the fire-resistant fiber felt. The structures, such as a fire-resistant stainless steel network and a quick clamping sheet, for fixing the fire-resistant fiber felt and the spraying coating layer during the paving process of the original fire-resistant liner for the warm air pipeline are omitted by the fire-resistant liner provided by the invention; the anchoring nails are used for fixing the fire-resistant fiber felt and the spraying coating; and under the condition of maintaining each performance index of the original fire-resistant liner, the spraying coating construction efficiency of the warm air pipeline is increased, the operation time is reduced and the service life of the warm air pipeline is prolonged.

Description

technical field [0001] The invention belongs to the technical field of laying refractory materials, and in particular relates to a refractory inner lining of a hot air duct and a laying method thereof. Background technique [0002] Generally, the inner wall of the hot air pipeline of the grate rotary kiln pellet production system is equipped with refractory materials. The refractory materials of the pipeline are sprayed coating, refractory white steel mesh, refractory fiber felt, and the outer wall of the pipeline, among which the refractory fiber felt and sprayed layer They are all fixed by the support of refractory white steel mesh, and the refractory white steel mesh is fixed by more complex structures such as fast cards. The refractory white steel mesh of the original structure has a thin cross-section, which is easily oxidized at high temperature and cannot provide long-term and effective support, resulting in a low service life of the hot air duct. The above-mentioned...

AI Technical Summary

Problems solved by technology

The refractory white steel mesh of the original structure has a thin cross-section, which is easy to oxidize at high temperature and cannot provide long-term and effective support, resulting in a low service life of the hot air duct

The above-mentioned masonry method of refractory materials for hot air pipelines has the disadvantages of complex structure and easy oxidation and falling off. The installation of quick cards and refractory white steel mesh is inconvenient, and many spare parts are required for maintenance, which is inconvenient for construction and installation.

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