Heat preservation construction method for preheating zone of double-chamber kiln

Abstract

The invention discloses a heat preservation construction method for a preheating zone of a double-hearth kiln, and relates to the technical field of kilns. The method comprises the steps that anchoring parts are welded to the outer wall and the outer top of a kiln shell of the preheating zone of the double-hearth kiln; a circle of fan-shaped steel plate is welded around the kiln shell at the bottom of the kiln shell to form a horizontal supporting plate; a circle of arc-shaped steel plate is welded around the kiln shell on the outer edge of the upper end surface of the supporting plate to form a shroud; the space between the kiln shell and the surrounding cylinder is filled with spraying paint, and a vibrator is used for vibrating; after the spray coating is hardened enough, another layer of shroud is welded upwards at the upper end of the shroud in the axial direction, the spray coating continues to be poured, and the vibrator is used for vibrating; repeating the steps until the uppermost shroud and the injected spray coating are higher than the anchoring part at the outer top of the kiln shell; and after the spray coating fully filled in the whole preheating zone is hardened, covering the upper port of the uppermost shroud by using a cover plate, and welding and fixing. The problems that according to an existing double-hearth kiln preheating zone heat preservation construction method, spraying paint is prone to falling off, and maintenance and spraying construction are not facilitated again are solved.

Description

technical field [0001] The invention relates to the technical field of kilns, in particular to a heat preservation construction method for a preheating zone of a double-chamber kiln. Background technique [0002] The kiln lining is the working layer in the lime kiln that is in contact with the lime raw materials and finished products and other materials and fuels. It is mainly used to provide a good environment for the chemical combustion of the materials, support the entire working layer of the kiln, protect the kiln shell from high temperature erosion, and avoid heat loss. . According to the calcination principle of the kiln process, from top to bottom, the area can be divided into preheating zone, calcining zone and cooling zone. During the operation of the kiln, the working temperature of the refractory material cannot exceed the tolerance temperature, so as to ensure the service life of the refractory material. At the same time, because the lime itself is alkaline, ac...

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Problems solved by technology

[0005] The purpose of the present invention is to provide a thermal insulation construction method for the preheating zone of a double-chamber kiln. This method can solve the problem that the existing thermal insulation construction method for the preheating zone of a double-chamber kiln easily causes the spray paint to fall off, which is not conducive to maintenance and re-spraying construction.

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