Industrial furnace liner

Abstract

An industry furnace lining is arranged in the industry furnace shell and comprises an inner high temperature resistant layer and an outer heat-insulating layer, the bottom of the inner high temperature resistant layer is built by impervious bricks, a whole reverse U-shaped structural member made of high temperature resistant non-metal composite material is taken as an inner lining on the two sides and the top; the bottom of the outer heat-insulating layer is built by the insulating bricks, the two sides of the top of the outer heat-insulating layer are built by light high-alumina refractory fiber modules. The industry furnace lining of the invention has advantages of short furnace building period, low maintenance cost and long service life; and can implement the rapid temperature raising and descending of the furnace kiln.

Description

technical field [0001] The invention relates to an industrial furnace cellar, in particular to an industrial furnace lining. Background technique [0002] The industrial furnace lining is set in the furnace shell of the industrial pit furnace, including the inner high temperature resistant layer and the outer thermal insulation layer. The industrial furnace lining of prior art is as figure 1 As shown, its outer layer insulation layer 12 adopts insulation bricks to build on the inner side of furnace shell 11, and inner layer high temperature resistant layer 13 adopts impermeable bricks or high temperature resistant bricks to build on the inside of outer layer insulation layer 12. The problems with this structure and material are: [0003] 1. The furnace building period is long; [0004] 2. The heat storage loss of the masonry is relatively large, and the heat dissipation loss on the surface of the furnace body is relatively large; [0005] 3. Both insulation bricks and im...

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Problems solved by technology

[0003] 1. The furnace building period is long;

[0004] 2. The heat storage loss of the masonry is relatively large, and the heat dissipation loss on the surface of the furnace body is relatively large;

[0005] 3. Both insulation bricks and impermeable bricks use lightweight bricks with a specific gravity in the range of 0.5 to 0.8. The obvious disadvantages are large porosity, loose structure, low mechanical strength, poor wear resistance, and poor thermal stability. After a period of time, the gap between the bricks will be displaced with the change of temperature, and finally the sealing and heat preservation of the furnace will be severely reduced and it will be scrapped, and the furnace lining must be rebuilt

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