SU1753224A1 - Method of making walls of industrial furnaces - Google Patents

Abstract

Summary of the Invention; The method includes installation of a frame and wall covering, laying of asbestos, heat insulation, and refractory layers, successively adjacent to the covering. First, an asbestos layer is made, then a refractory layer, and lastly a heat insulating layer, which is poured into the gap between the casing with the asbestos layer and the refractory layer. Filling is carried out with a raw thermal insulation mixture based on slag-and-kemze sand, bauxite powder and liquid glass 1 sludge.

Description

The invention relates to metallurgical heat engineering and can be used in the manufacture of walls in the process of building or repairing predominantly heating and thermal furnaces of metallurgy and mechanical engineering plants.

The aim of the invention is to increase the gas density of the walls reducing the cost of the furnace and simplify the laying

The use of the filler heat insulating mass in monolithic design ensures the operation of the furnace in gas-tight mode by minimizing the filtration of flue gases through the furnace walls compared to the use of piece heat insulating products, which, in turn, will save fuel or electricity.

The use of raw thermal insulation mass based on slag-and-sand sand, which is obtained in large quantities at the plant in the production of pumice from blast furnace slag and is a waste product, significantly reduces the cost of the furnace, and using the method of pouring thermal insulation mass directly into the furnace walls simplifies compared with piece products.

This goal is achieved by the fact that in the method of manufacturing industrial furnace walls, mainly heating and thermal, including mounting the frame and wall covering, laying asbestos heat insulating and refractory layers, successively adjacent to. the casing, making the heat insulating layer is carried out after laying the asbestos and refractory layers by pouring into the gap between these layers the heat insulating mixture based on slag-and-sand, bauxite powder and water glass.

The drawing shows the wall of the furnace, the cut.

The method is carried out as follows.

First, a furnace frame and lining are made of steel material. The asbestos sheet is then laid on the inside of the casing, then you are produced (L

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the laying of the refractory layer (of refractory bricks, such as chamotte). Between the refractory masonry and the cladding with an asbestos sheet, a gap is left that is obtained as a result of the heat calculation of the furnace according to the design for pouring the heat insulating layer. A solution of the thermal insulation mixture is prepared on the basis of slag-and-cem sand, bauxite powder and liquid glass, then poured from above into the gap left.

After the construction is completed, the furnace is dried and heated. During the drying and heating of the furnace, the heat insulating layer undergoes heat treatment and takes on a final appearance suitable for long-term operation.

Claims (1)

Invention Formula A method of manufacturing industrial furnace walls, preferably heating and thermal, including installation of a framework and wall covering, laying asbestos, heat insulating and refractory layers, successively adjacent to the covering, characterized in that In order to increase the gas density of the walls, reduce the cost of the furnace and simplify the laying, the heat insulating layer is made after laying the asbestos and refractory layers by pouring into the gap between these layers of thermal insulation mixture based on slag-and-cem sand, bauxite powder and water glass. Darkako Kilns Obstvka svstnno test) Stay teggzo I -, l lt shonnogo material on the basis of slag-and-sand sand Sing firepornpmkmriichv