CN2131083Y

CN2131083Y - Far-infrared light brick

Info

Publication number: CN2131083Y
Application number: CN 92213416
Authority: CN
Inventors: 章无忌
Original assignee: Individual
Current assignee: Individual
Priority date: 1992-03-12
Filing date: 1992-03-12
Publication date: 1993-04-28
Anticipated expiration: 2002-03-12

Abstract

The utility model provides a far-infrared light brick, which is a refractory brick for a resistance heating furnace with heat treatment. Light refractory clay is used as a matrix whose one side is combined with one thin layer of far-infrared layer with refractory materials. The utility model has the advantages of good versatility, strong force of thermal radiation, good insulation properties, low cost of manufacturing, and long service life. The utility model can be used for various models of box-typed and open-typed resistance furnaces.

Description

Far-infrared light brick

The utility model relates to a kind of heat treatment resistance-heated furnace refractory brick.

At present, the fire proof material brick of common used heat treatment resistance-heated furnace internal layer is light-weight refractory clay brick and the high-alumina brick of placing heating wire.Though the light-weight refractory clay brick has insulation effect preferably, thermal emissivity rate is not high.As its improvement, Chinese patent CN87211144U and CN2050576U have proposed to make with carborundum the scheme of whole furnace lining respectively, though improved thermal emissivity rate, exist and damage the drawback that the back is difficult for reparation; Because of the special large mold of need, so manufacturing cost is higher, a kind of furnace lining only is applicable to the resistance furnace of corresponding specification again, and the scope of application is narrower.

The purpose of this utility model is, a kind of good heat insulation, thermal emissivity rate height, the scope of application is wide, manufacturing is simple, cost is low resistance-heated furnace furnace lining refractory brick are provided.

The technical solution of the utility model is, is matrix with the light-weight refractory clay, is compounded with skim far infrared refractory masses at a side surface of matrix, makes the general fire bricks of the various relevant models that meet " GB GB2992-82 " regulation.Described far infrared refractory masses silicon carbide-containing 70～85%(weight), all the other are fire clay.

For prolonging the life-span of the present utility model, prevent carborundum oxidation at high temperature, can coat high-temperature oxidation resistant coating at far infrared refractory material laminar surface.

The utlity model has following advantage: (1) versatility is good, is convenient to change.Because the various brick types of the utility model all meet " GB " required standard, so applicable to the resistance furnace of the various type of furnaces; When furnace lining damages, also can replace with new refractory brick easily.(2) heat radiation power is strong, good heat preservation performance, furnace temperature are even.Because of the carborundum thermal conductivity factor is 9.45 kilocalories/mh ℃ (950 ℃), radiation coefficient is 0.9, when the utility model is used for resistance furnace lining, after electric heating element (resistance wire) work, can very fast intensification and produce heat radiation, significantly reduced the required time of operating temperature that reaches; Simultaneously, the utility model is a matrix with the light-weight refractory clay, resistance furnace good heat preservation performance then, so, use the utility model to reach 15～40% as resistance furnace high efficiency, the obvious energy conservation of furnace lining.Again because of existing be that the resistance furnace of furnace lining is when reaching operating temperature with the light-weight refractory clay brick, the temperature difference of resistance wire temperature and operating temperature reaches 150～200 ℃, and the temperature difference of the present utility model has only about 50 ℃, so after using the utility model, resistance furnace can improve 100～150 ℃ of operating temperatures; In addition, under identical operating temperature, use the heating wire of resistance furnace of the present utility model to be difficult for oxidation damage.(3) low cost of manufacture, life-span are long.Make the utility model and do not need large mold, technology is simple, and raw material are easy to get, so cost is lower; Again because of carborundum intensity in the utility model far infrared refractory masses is big, the refractoriness height, so not fragile when the utility model uses, the life-span is longer; If the far infrared refractory masses is coated high-temperature oxidation resistant coating, then better effects if outward.

Fig. 1 is that the utility model is used for the structural representation that resistance furnace furnace bottom and chamber type electric resistance furnace furnace wall are not placed the straight brick of heating wire.

Fig. 2 is the structural representation that furnace wall that the utility model is used for chamber type electric resistance furnace is placed the step bricks of heating wire.

Fig. 3 is the structural representation of the arch brick of the utility model chimney arch of being used for chamber type electric resistance furnace.

Fig. 4 is the structural representation that the utility model is used for the arch angle brick that the chimney arch of chamber type electric resistance furnace supports.

Fig. 5 is that the utility model is used for the structural representation that well formula resistance furnace furnace wall is placed the fan-shaped step bricks of heating wire.

Fig. 6 is that the utility model is used for the structural representation that well formula resistance furnace furnace wall is not placed the radial brick of heating wire.

Fig. 7 is the schematic diagram that the utility model is used for chamber type electric resistance furnace.

Fig. 8 is the schematic diagram that the utility model is used for well formula resistance furnace.

Embodiment 1, see Fig. 1, make and the corresponding stock mould of Fig. 1 shape by " GB " given size, with the about 75%(weight of silicon carbide-containing), the about 25%(weight of fire clay) the carborundum pug make the thin slice of 5 millimeters thick, earlier carborundum pug thin slice is put into stock mould, again the light-weight refractory clay material is filled up stock mould, use the forcing press press forming, go into the klining knot after the drying, promptly obtaining matrix (1) is the light-weight refractory clay, and far infrared refractory masses (2) is compounded in the straight brick of far infrared lightweight of matrix (1) one side surface.

Embodiment 2, see Fig. 2, make and the corresponding stock mould of Fig. 2 shape by " GB " given size, and all the other make corresponding step bricks with embodiment 1, brush high-temperature oxidation resistant coating waterglass on far infrared refractory masses surface at last.

Embodiment 3-6, see Fig. 3, Fig. 4, Fig. 5, Fig. 6, make respectively and Fig. 2, Fig. 3, Fig. 4, Fig. 5, the corresponding stock mould of Fig. 6 shape by " GB " given size, all the other make corresponding step bricks, arch brick, arch angle brick, fan-shaped step bricks and radial brick with embodiment 1.

Application examples 1, as shown in Figure 7, the chamber type electric resistance furnace side wall is built system with the utility model step bricks (1), wherein sandwich the flat brick (2) of putting of far infrared refractory material, the straight brick of the utility model (3-1) one deck is built on its top, go up block the utility model arch angle brick (4) at straight brick (3-1), encircle with the utility model arch brick (5) certificate at the top, back wall and fire door are built system with the straight brick of the utility model (3-2), furnace bottom is put brick with far infrared refractory material furnace bottom and is paved, thereby makes the chamber type electric resistance furnace inboard wall of burner hearth all have skim far infrared refractory masses everywhere.

Application examples 2, as shown in Figure 8, well formula resistance furnace furnace bottom is paved with the straight brick of the utility model (3), pit shaft is built system with the fan-shaped step bricks of the utility model (1), wherein sandwich far infrared refractory material point and put brick (2), its top uses the utility model radial brick (4) to build system, makes the interior thorax inwall except that the top of well formula resistance furnace of the system of block that skim far infrared refractory masses all be arranged everywhere.

Claims

1, a kind of far infrared light-weight brick has light-weight refractory clay body (1), it is characterized in that, also has far infrared refractory body (2), and fixedly secures together with light-weight refractory clay body (1).

2, far infrared light-weight brick according to claim 1 is characterized in that, is fixed with the high-temperature oxidation resistant coating layer outside far infrared refractory body (2).