US2317451A - Means for reinforcing refractory furnace walls and the like - Google Patents

Description

R. T. GILES Filed Aug. V1, 1940 MEANS FOR REINFRCING REFRAGTORY FURNACE WALLS AND THE LIKE April 27, 1943.

Patented Apr. 27, 1943 MEANS FOR REINFORCING REFRACTORY FURNACE WALLS AND THE LIKE Roy T. Giles, Daytona Beach', m. Application August 1, 1940, serial No. 349,262

(c1. 'z2-101i 6 Claims.

'I'his invention relates to metallurgical furnaces and the like, and particularly to an improved reinforcing for the refractory arches, walls, etc. thereof.

Various means and designs have been suggested and used for reinforcing refractory furnace walls, arches, doors and the bottoms of metallurgical furnaces, soaking pit covers and the like. While most of these reinforcing means provide a satisfactory reinforcement for the refractorymaterial, which is usually concrete, they are unsatisfactory in other respects. The most common method used for reinforcing the refractory material is to embedv completely therein carbon steel bars. Such steel bars usually absorbed so much heat during the heat treating of thematerials in the furnace lthat the temperature thereof oftentimes exceeds 600 or 700 Fahrenheit, which is undesirable and thus rendered such steel bar reinforcing unsatisfactory. 'I'his was particularly s o in the case of dat arches in that the conventional reinforcing methods required that the steel bar reinforcing be placed near the bottom therein which, of course, is where the temperature is highest, and

this eventually results in failure of such arches due to the extreme temperatures to which the reinforcing steel bars are subjected. That is, the

heat is absorbed by the steel bars and there is no Way in which it can be dissipated therefrom, due to the .fact that the .steel reinforcing bars are completely embedded in the refractory ma terial.y

Inthe present invention, there is provided'an improved means for reinforcing furnace walls, arches, etc. in which all the above named disadvantages have been eliminated, and at the same time, one which possesses all of the primary requisites of a good reinforcing for refractory material.

Accordingly, it is one of the objects of the present invention to provide -an improved means for reinforcing refractory 'walls and the like which is simple and inexpensive and yet, one in which any heat absorbed thereby is rapidly` and efficiently dissipated therefrom so that the reinforcing means is maintained at a relatively low temperature at all times,

It is another object of the. invention to provide' an improved means for reinforcing refractory walls and the like, which is strong and rugged and, at the same time, one in which any danger of failure is eliminated.

It is a further object of this invention to provide a flat arch or cover for metallurgical furnaces, soaking pits and the like, which is a decided improvement over any heretofore suggested or used.

Various other objects and advantages' 0f this invention will become more apparent in the course of the following specification and will be l corporated therewith;

particularly pointed out in the appended claims.

In the accompanying drawing,there is shown,

for the purpose of illustration and description; an embodiment which my invention may assume in practice. Y In the drawing:

' Figure 1 is a plan view of a furnacearch showing the improved-reinforcing of my invention in- Figure 2 is a section taken on line Figure 1; and

Figure 3 is a section taken on Figure 2. A

Referring more particularly to the drawing, the improved reinforcingV means 'of my invention for reinforcing refractory materials shown incorporated merely forthe purpose of illustration with an improved fiat arch or'cover for metallurgical furnaces and it will be understood that my improved reinforcing means asshown in connection therewith may be used to reinforce the refractory walls, bottoms, doors, etc. of such furnaces if so desired.y

There is shown a substantially 'square shaped fiat arch or cover 2 consisting namely of a refractory material 3 which may be refractory concrete or any other suitable refractory material. There is arranged around the outer sides of the refractory material 3 a plurality of angle-iron reinforcing members 4, namely, four in the present instance with one positioned on each side of the arch and having theirv ends joined angularly as at 5 preferably by means of welding so as to provide a metallic frame-like portion, around the outer and upper edges'of the arch. One of the flanges 6 of each of the angle-iron members 4 extends downwardly along the side of the refractory material 3 directly next thereto and preferably being cupped in yslightly so as to be Within the outer dimensions of therefractory material of the arch. The other flange 1 of each of the angle-iron members 4 is disposed on the outer side of the refractory material and lying substantially flush with the outer surface thereof so as to be exposed to the atmosphere.

There is arranged across the outer side of the refractory material 3 a plurality ot spaced apart angle-iron reinforcing members 8 having one ange 9 embedded in the refractory material and the ends thereof preferably overlapping the respectiveopp'osite angle-iron members 4 of the frame-like portion as at I 0, to whichthey are connected preferably by means of welding. There line III-III yof is arranged with each of the embedded flanges 9 means for anchoring the same therein. This is done preferably by cutting the inner edge of the vflange 9 or each of the angle-iron members 8 at spaced apart intervals therealong from the outer edge thereof to a point intermediate the depth thereof so as to provide portions i2 which are bent slightly and alternately in opposite directions so as to provide means for securely anchoring the flanges l in the refractory material whereby the same is securely supported. The other flange Il of each of the angle-iron reinforcing members 8 lies substantially flush with the outer surface ofthe refractory material so as to be exposed also to the atmosphere.

As a result of my invention, it will be seen that any heat absorbed by the inner or embedded flanges i and -9 of the angle-iron reinforcing members I and l, respectively, will be rapidly and efficiently dissipated to the atmosphere through the respective outer flanges 1 and Il which are exposed thereto, thereby providing an arch or reinforcing means which will last indefinitely without failure.

While I have shown and described one specific embodiment of the present invention, it will be seen that I'do not wish to be limited exactly thereto, since various modifications may be made without departing from the scope of the invention. as defined by the following claims.

I claim:

l. In a refractory arch and the like for furnaces of the class described, means for reinforcing the same, consisting of a plurality of angleiron reinforcing members with some of said members arranged around said Varch and having their ends connected to gether with one flange thereof extending downwardly along the sides of the refractory material so as to provide a frame-like portion for the arch and the other of said angleiron reinforcing members disposed along the.

outer surface and across the arch'with their ends connected respectively to opposed first mentioned angle-iron frame members and having one harige thereof embedded in the refractory material of the arch with the inner edge portions thereof bent alternately in opposite directions so as to securely anchor the angle-iron members in the refractory material, andthe other flange of all of said angleiron reinforcing members lying substantially flush with the refractory material on the outer side thereof and exposed to the atmosphere whereby any heat absorbed by said angle-iron members will be rapidly dissipated to the atmosphere.

2.. In a-refractory wall 'or the like for furnaces l of the class described, means for reinforcing said refractory wall including four angle-iron members with one arranged on each side of said wall having their ends connected respectively to each other at the corners so as to provide a substantially rectangular-shaped metallic frame which is disposed on the outer side of said wall, one of the flanges of each of said angle-iron members extending inwardly along the respective sides of the refractory wall with the other harige yof each of said angle-iron members extending inwardly toward the center of the same substantially flush with the outer surface yof the Vwall so as to be exposed to the atmosphere, and at least one angleiron member arranged across said refractory wall on the outer side thereof with the opposed ends thereof connected to said first mentioned angleiron members, said last mentioned angle-iron member having one ange thereof embedded inthe refractory wall with the other ange lying substantially flush with the outer surfaceof the wall so as to be exposed to the atmosphere where by any heat absorbed by any of said angle-iron members will be rapidly dissipated to the atmosphere,v

3. In a refractory wall or the like for-furnaces of the class described, means for reinforcing said refractory wail including four angle-iron members with one arranged on each side of said wall having their ends connected respectively to each other at the corners so as to provide a substantially rectangular-shaped metallic frame which is disposed on the outer side of said wall, one of the flanges of each of said angle-iron members extending inwardly along the respective sides of the refractory wall with the other flange of each of said angle-iron members extending inwardly toward the center of the same substantially flush with the outer surface of the wall so as to be exposed to the atmosphere, and a plurality of spaced apart angle-iron members arranged across said refractory wall on the outer side thereof with the opposed ends of each of the angle-iron members connected to some of said first mentioned angle-iron members, each of said last mentioned angle-iron members having one flange thereof embedded in the refractory wall with the other flange lying substantially flush with the outer surface of the wall so as to be exposed to the atmosphere whereby any heat absorbed by any of said angle iron members will be rapidly dissipated to the atmosphere.

4. In a refractory wall or the like for furnaces of the class described, means for reinforcing said refractory wall as defined in claim 3 whereinthe inner edge of the flange embedded in the wail of at least some of the angle-iron members is cut at spaced apart intervals vtherealong with the portions between the cuts bent alternately in opposite directions whereby each of said flanges so formed is securely amxed in the refractory wall.

5. A refractory panel of the class described comprising a solid mass of refractory material,

a rectangular-shaped peripheral frame arranged around said refractory material, said frame consisting of a plurality of structural members with one arranged on each side of the panel and having their ends'securely connected respectively to each other, said structural members having a portion thereof disposed along the respective sides of the lrefractory material and a portion thereof disposed against theouter face of the material so as to be exposed to the atmosphere, and at least lone structural member arranged across the frame and outer face of said refractory material with the ends thereof securely connected to the structural members as first mentioned.

said last mentioned structural memberehaving a portion thereof embedded in the Vrefractory material 6. A refractory panellof the class described l comprising a solid mass of refractory material, a rectangular-shaped peripheral frame arranged around said refractory material, said frame con sisting of at least four angle-iron members with one arranged on each side of the panel and haveach other at the corners, one of the anges of each of said angle-iron members disposed along the respective sides of the refractory material with the other flange of each of said angle-iron members disposed against the outer face of the material so as to be exposed to the atmosphere, and at least one structural member arranged across the frame and outer face of said refractory material with the ends thereof securely connected to the angle-iron members, said structural member having a portion thereof embedded in the refractory material.

Roy T, onine.

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