CA1288003C - Method of building refractory protection walls of ovens, furnaces andcombustion chambers, and fire- brick therefor - Google Patents
Method of building refractory protection walls of ovens, furnaces andcombustion chambers, and fire- brick thereforInfo
- Publication number
- CA1288003C CA1288003C CA000540415A CA540415A CA1288003C CA 1288003 C CA1288003 C CA 1288003C CA 000540415 A CA000540415 A CA 000540415A CA 540415 A CA540415 A CA 540415A CA 1288003 C CA1288003 C CA 1288003C
- Authority
- CA
- Canada
- Prior art keywords
- fire
- bricks
- brick
- refractory
- blind
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
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Abstract
METHOD OF BUILDING REFRACTORY PROTECTION
WALLS OF OVENS, FURNACES AND COMBUSTION
CHAMBERS, AND FIRE-BRICK THEREFOR.
ABSTRACT OF THE DISCLOSURE
A method of building refractory protection walls of fur-naces, ovens or combustion chambers, notably but not exclusively for boilers for incinerating garbage and refuse, is proposed for protecting the hearth walls by means of a refractory wall (4) consisting of a plurality of shaped fire-bricks (5) each provided with at least one blind recess (6, 11) disposed at the level of the fixing means of the panel (1) to be protected which consist of fixing studs (7) projecting from the panel surface and adapted to engage the corresponding blind recesses (6, 11) so that each fire-brick (5) is suspended from these studs (7) and self-locked in position by at least the next overlying fire-brick.
WALLS OF OVENS, FURNACES AND COMBUSTION
CHAMBERS, AND FIRE-BRICK THEREFOR.
ABSTRACT OF THE DISCLOSURE
A method of building refractory protection walls of fur-naces, ovens or combustion chambers, notably but not exclusively for boilers for incinerating garbage and refuse, is proposed for protecting the hearth walls by means of a refractory wall (4) consisting of a plurality of shaped fire-bricks (5) each provided with at least one blind recess (6, 11) disposed at the level of the fixing means of the panel (1) to be protected which consist of fixing studs (7) projecting from the panel surface and adapted to engage the corresponding blind recesses (6, 11) so that each fire-brick (5) is suspended from these studs (7) and self-locked in position by at least the next overlying fire-brick.
Description
oo~
BACKGROUND OF THE INVENTION
The present invention relates to a method of building refrac-tory protection walls of ovens, furnaces and combustion chambers, and to a fire-brick for carrying out said method.
S This invention is applicable notably but not exclusively to the constxuction of boilers or furnaces for protecting the hearth walls the-reof. More particularly, the present invention is intended for protecting boilers in which the hearth walls are provided with tubular panels, no-tably in the case of town refuse or garbage incineration boilers.
A boiler of this type is well known nowadays which comprises es-sentially a combustion chamber which, in the case of an incineration plant, permits of burning up household and industrial refuse and have their inner walls equipped with heat regenerators for recovering the po-15 tential thermal energy stored in the refuse.
In fact, some known combustion chambers have their inner walls lined with so-called tubular panels made from tubular elements and fins welded thereto, a heat-conveying fluid being caused to flow through the panels heated during the combustion.
However, to protect such tubular panels from severe heat- and mechanical stress and from the attack of chemical and abrasive substan-ces, they must be protected by a refractory or fire wall warranting a longer useful life of the structure.
In the conventional method of building tubular panels, said tubes 25 are spaced from one another but not assel~bled through their fins, so that suitably shaped fire-bricks can be disposed between the tubes for complet-ing the protection fire-wall. Now this method is no more applicable to panels consisting of an assembly of tubes and fins welded thereto since it is not possible to insert fire-bricks between a pair of ad~acent tubes 30 due to the presence of said fins.
In a known attempt to palliate this inconvenience, fire-bricks and refractory plates provided with transverse holes have been proposed so that the bricks can be fitted to the tubular panels by means of fast-ening means such as screws, rivets or T-shaped locking lugs extending 35 therethrough.
This solution is objectionable because on the one hand it impairs the strength of the fire-bricks, due to the presence of the through-holes, and on the other hand each fixation hole must subsequently be stopped.
BACKGROUND OF THE INVENTION
The present invention relates to a method of building refrac-tory protection walls of ovens, furnaces and combustion chambers, and to a fire-brick for carrying out said method.
S This invention is applicable notably but not exclusively to the constxuction of boilers or furnaces for protecting the hearth walls the-reof. More particularly, the present invention is intended for protecting boilers in which the hearth walls are provided with tubular panels, no-tably in the case of town refuse or garbage incineration boilers.
A boiler of this type is well known nowadays which comprises es-sentially a combustion chamber which, in the case of an incineration plant, permits of burning up household and industrial refuse and have their inner walls equipped with heat regenerators for recovering the po-15 tential thermal energy stored in the refuse.
In fact, some known combustion chambers have their inner walls lined with so-called tubular panels made from tubular elements and fins welded thereto, a heat-conveying fluid being caused to flow through the panels heated during the combustion.
However, to protect such tubular panels from severe heat- and mechanical stress and from the attack of chemical and abrasive substan-ces, they must be protected by a refractory or fire wall warranting a longer useful life of the structure.
In the conventional method of building tubular panels, said tubes 25 are spaced from one another but not assel~bled through their fins, so that suitably shaped fire-bricks can be disposed between the tubes for complet-ing the protection fire-wall. Now this method is no more applicable to panels consisting of an assembly of tubes and fins welded thereto since it is not possible to insert fire-bricks between a pair of ad~acent tubes 30 due to the presence of said fins.
In a known attempt to palliate this inconvenience, fire-bricks and refractory plates provided with transverse holes have been proposed so that the bricks can be fitted to the tubular panels by means of fast-ening means such as screws, rivets or T-shaped locking lugs extending 35 therethrough.
This solution is objectionable because on the one hand it impairs the strength of the fire-bricks, due to the presence of the through-holes, and on the other hand each fixation hole must subsequently be stopped.
fiO~3 SUMMARY OF THE INVENTION
A feature of one embodiment of the present inven-tion provides a method of building reEractory inner protection walls for furnaces, ovens or combustion chambers, which avoids the inconveniences of prior art structures and on the one hand neither impairs the mecnanical strength of the Eire-bricks, nor requires any sealing or stopping operation when fitted in position.
It is a feature of another embodiment of the pre-sent invention to provide a fire-brick for protecting tubular panels, this brick having a shape consistent with the panel configuration and a plain, solid surface on the boiler or furnace side, and adapted to be easily fitted to the wall panels.
Another feature of another embodiment of the pre-sent invention provides an improved method of building refractory panels for protecting the walls of furnaces, ovens and combustion chambers by means of fire-bricks having a configuration such that they can be fitted in staggered relationship to prevent any air-flue effect through the brick sealing joints.
Furthermore, a feature of another embodiment of this invention provides a method of building refractory protection walls by using fire-bricks which are charac-terized by a reliable, efficient fluid-tightness.
A complementary feature of an embodiment of the present inven-tion provides a method of building refractory protection walls from fire-bricks so shaped that they are self-fixing and self-locking in the final structure.
Other features and advantages of the present invention will appear as the following description proceeds which is given by way of example, not of limitation.
In accordance with an embodiment of the present invention there is provided a method of building ~'~,.
.~, ~
J~OO~
refractory protection walls of furnaces, ovens or combustion chambers, for boilers or the like for incinerating household refuse, garbage or industrial waste or refuse, for protecting hearth walls, the hearth walls consisting of panels consisting of a cluster of tubes assembled by welded fins, wherein the refractory protection wall consists of a plurality of shaped fire-bricks having inner and outer surfaces, the method comprising the steps of: providing at least one blind o recess on the inner surfaces of each of the fire-bricks;
providing the panel to be protected with a plurality of fixing studs adapt~d to correspond to and engage at least one blind recess of each of the fire-bricks;
suspending each of the fire-bricks from a corresponding fixing stud or studs wherein the fire-bricks are held in position by gravity and wherein the fire-bricks are positioned in overlying adjacent relationship.
In accordance with another embodiment of the pre-sent invention there is provided a fire-brick for use in refractory wall composed of a plurality of shaped fire-bricks for the protection of a hearth wall, the hearth wall being provided with panels composed of a cluster of tubes assembled by welded fins and having a plurality of fixing studs, the fire-bricks having a volumetric configuration consistent with the panel, each fire-brick having an inner face and an outer face, and comprising on its inner face at least one blind recess having a longitudinal axis extending across and inclined to the inner face, the fixing studs of the panels ~atching with and being adapted to engage the blind recesses of the plurality of fire-bricks composing the refractory wall, each of the fire-bricks being suspended from correspon-ding fixing studs to be held in position by gravity and self-locked at least by the overlying adjacent fire-brick of the refractory wall.
A clearer understanding of the present invention a~t,!' .OC~3 - 4a -will be had from the following description given with reference to the attached drawings.
THE DRAWINGS
Figure 1 is a fragmentary section taken across a combustion chamber equipped with a tubular panel protected according to the teachings of the present invention;
Figure 2 is a longitudinal section taken along the line II-II of Figure l; and Figure 3 is a fragmentary view showing one face of a refractory protection wall according to the instant invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention is directed to the building of refractory walls for protecting furnaces, ovens or combustion chambers consisting as a rule of a hearth in which the combustion takes place and having its walls provided with a heat exchanger capable of collecting the heat released by the combustion for reheating a heat conveying fluid for the purpose of delivering heat to another device.
Furnaces, ovens or combustion chambers of this type are used in general but not exclusively in boilers for incinerating town or household refuse or garbage, as well as industrial refuse or waste.
As clearly shown notably in Figure 1, the hearth walls are provided with tubular panels 1 consisting in turn of tubes 2 interconnected by welded fins 3 and intended for circulating the heat-conveying fluid.
In the method of the present invention the refrac-tory wall 4 consists of a plurality of shaped fire-bricks 5, as follows:
- each fire-brick 5 comprises at least one blind recess 6 disposed at the level of the fixing means contemplated;
-` ~ 2~3~003 - the panel 1 to be protected is provided with a plurality of projecting fixing studs 7 matching with and adapted to engage said blind recesses 6 of fire-bricks 5, - each fire-brick 5 is suspended from the corresponding fixing 5 stud or studs 7 and thus held in position by gravity, the fire-brick being furthermore self-locked at least by the overlying adjacent fire-brick 5.
As shown in Figures 1 and 2, the fire-bricks 5 have a volumetric shape consistent with the panel 1 and comprise an inner face 8 and an 10 outer face 9.
The inner face 8 of each fire-brick 5 is shaped to accomodate the tubes 2 of tubular panel 1 and the outer face 9 is part of the sur-face of the refractory protection wall, on the hearth side.
According to the present invention, each fire-brick 5 has formed 15 on it inner face 8 at least one blind recess 6 having a longitudinal axis 10 extending across the fire-brick thickness and inclined at an an-gle a to said inner face 8.
According to a preferred form of embodiment of the present inven-tion, this angle a will advantageously lie in the range of 45 - 90, 20 and the longitudinal axis 10 will extend upwardly to impart the self-locking feature to the fire-brick 5 by mere gravity, as actually shown in Figure 2.
In another preferred form of embodiment, each fire-brick 5 has two blind recesses 6, 11 formed therein, the longitudinal axes 10, 12 25 respectively of which being disposed in a common axial plane substantial-ly at right angles to the inner face 8. Furthermore, these axes 10, 12 are substantially parallel to each other. Thus, when fitting the fire-brick in position, any undesired pivoting movement thereof with res~ect to its fixing stud 7 will be safely prevented.
Moreover, as also shown in Figure 1 the inner face 8 of fire-brick 5 has two spaced grooves 13, 14 of semi-circular cross-sectional configuration formed therein. The distance between centres of these grooves 13, 14 corresponds substantially to that of said tubes 2. In this case, the blind recess or recesses 6, 11 are disposed in the thick-35 est area 15 of the fire-brick, for example substantially midway of said grooves 13, 14.
In fact, according to the method of the present invention, the blind recesses 6, 11 as well as the corresponding fixing studs 7 pro-vided for suspending and self-locking the fire-bricks 5 are disposed ~ 2~.00;~
in staggered relationship to prevent any undesired "flue effect" fromdeveloping in the jointing of the fire-bricks, as shown more particu-larly in Figure 3.
This arrangement is made possible notably by the fact that each 5 fire-brick 5 covers a pair of adjacent tubes 2 and is suspended from, and secured by, the corresponding fixing studs 7 projecting from the fin 3 disposed between, and welded to, said pair of adjacent tubes 2. The a-bove-described form of embodiment of fire-brick 5 is perfectly suitable to this staggered fitting method.
However, other fire-brick sizes may be contemplated, notably when it is desired that each brick covers three tubes or more, without departing from the basic principle of the invention.
When carrying out the method of the present invention by build-ing a refractory protection wall structure consisting of a plurality of 15 fire-bricks 5, each fire-brick is provided with a pair of blind recesses 6, 11 disposed substantially along a common vertical axis, and fixing studs 7 having a configuration consistent with that of said blind re-cesses are welded to the fins 3 of tubular panels 1 according to the di-mensions of each fire-brick 5.
Thus, by welding the fixing studs 7 to said fins 3, the mechanic-al strength of tubes 2 constituting the panels 1 is not impaired. How-ever, it is quite possible to weld these fixing studs 7 to the tube gene-ratrices, provided that the bricks and their recesses are designed ac-csrdingly .
Finally, when building a refractory protection wall separating the combustion chamber from the tubular panel according to the method of the present invention, the fluid-tightness between ad~acent fire-bricks 5 is obtained by providing a refractory seal 20 between each top, bottom and lateral face 16 - 19 of fire-bricks 5.
For this purpose, each top, bottom and lateral face 16 - 19 of fire-bricks 5 has a relatively shallow groove 21 formed therein for re-ceiving this refractory seal 20.
This seal 20 may consist of any suitable refractory material pre-serving a certain resiliency even at high temperature, as will readily 35 occur to those conversant with the art.
Of course, other forms of embodiment may be devised for the pre-sent invention without departing from the basic principles thereof.
A feature of one embodiment of the present inven-tion provides a method of building reEractory inner protection walls for furnaces, ovens or combustion chambers, which avoids the inconveniences of prior art structures and on the one hand neither impairs the mecnanical strength of the Eire-bricks, nor requires any sealing or stopping operation when fitted in position.
It is a feature of another embodiment of the pre-sent invention to provide a fire-brick for protecting tubular panels, this brick having a shape consistent with the panel configuration and a plain, solid surface on the boiler or furnace side, and adapted to be easily fitted to the wall panels.
Another feature of another embodiment of the pre-sent invention provides an improved method of building refractory panels for protecting the walls of furnaces, ovens and combustion chambers by means of fire-bricks having a configuration such that they can be fitted in staggered relationship to prevent any air-flue effect through the brick sealing joints.
Furthermore, a feature of another embodiment of this invention provides a method of building refractory protection walls by using fire-bricks which are charac-terized by a reliable, efficient fluid-tightness.
A complementary feature of an embodiment of the present inven-tion provides a method of building refractory protection walls from fire-bricks so shaped that they are self-fixing and self-locking in the final structure.
Other features and advantages of the present invention will appear as the following description proceeds which is given by way of example, not of limitation.
In accordance with an embodiment of the present invention there is provided a method of building ~'~,.
.~, ~
J~OO~
refractory protection walls of furnaces, ovens or combustion chambers, for boilers or the like for incinerating household refuse, garbage or industrial waste or refuse, for protecting hearth walls, the hearth walls consisting of panels consisting of a cluster of tubes assembled by welded fins, wherein the refractory protection wall consists of a plurality of shaped fire-bricks having inner and outer surfaces, the method comprising the steps of: providing at least one blind o recess on the inner surfaces of each of the fire-bricks;
providing the panel to be protected with a plurality of fixing studs adapt~d to correspond to and engage at least one blind recess of each of the fire-bricks;
suspending each of the fire-bricks from a corresponding fixing stud or studs wherein the fire-bricks are held in position by gravity and wherein the fire-bricks are positioned in overlying adjacent relationship.
In accordance with another embodiment of the pre-sent invention there is provided a fire-brick for use in refractory wall composed of a plurality of shaped fire-bricks for the protection of a hearth wall, the hearth wall being provided with panels composed of a cluster of tubes assembled by welded fins and having a plurality of fixing studs, the fire-bricks having a volumetric configuration consistent with the panel, each fire-brick having an inner face and an outer face, and comprising on its inner face at least one blind recess having a longitudinal axis extending across and inclined to the inner face, the fixing studs of the panels ~atching with and being adapted to engage the blind recesses of the plurality of fire-bricks composing the refractory wall, each of the fire-bricks being suspended from correspon-ding fixing studs to be held in position by gravity and self-locked at least by the overlying adjacent fire-brick of the refractory wall.
A clearer understanding of the present invention a~t,!' .OC~3 - 4a -will be had from the following description given with reference to the attached drawings.
THE DRAWINGS
Figure 1 is a fragmentary section taken across a combustion chamber equipped with a tubular panel protected according to the teachings of the present invention;
Figure 2 is a longitudinal section taken along the line II-II of Figure l; and Figure 3 is a fragmentary view showing one face of a refractory protection wall according to the instant invention.
DESCRIPTION OF THE PREFERRED EMBODIMENT
The present invention is directed to the building of refractory walls for protecting furnaces, ovens or combustion chambers consisting as a rule of a hearth in which the combustion takes place and having its walls provided with a heat exchanger capable of collecting the heat released by the combustion for reheating a heat conveying fluid for the purpose of delivering heat to another device.
Furnaces, ovens or combustion chambers of this type are used in general but not exclusively in boilers for incinerating town or household refuse or garbage, as well as industrial refuse or waste.
As clearly shown notably in Figure 1, the hearth walls are provided with tubular panels 1 consisting in turn of tubes 2 interconnected by welded fins 3 and intended for circulating the heat-conveying fluid.
In the method of the present invention the refrac-tory wall 4 consists of a plurality of shaped fire-bricks 5, as follows:
- each fire-brick 5 comprises at least one blind recess 6 disposed at the level of the fixing means contemplated;
-` ~ 2~3~003 - the panel 1 to be protected is provided with a plurality of projecting fixing studs 7 matching with and adapted to engage said blind recesses 6 of fire-bricks 5, - each fire-brick 5 is suspended from the corresponding fixing 5 stud or studs 7 and thus held in position by gravity, the fire-brick being furthermore self-locked at least by the overlying adjacent fire-brick 5.
As shown in Figures 1 and 2, the fire-bricks 5 have a volumetric shape consistent with the panel 1 and comprise an inner face 8 and an 10 outer face 9.
The inner face 8 of each fire-brick 5 is shaped to accomodate the tubes 2 of tubular panel 1 and the outer face 9 is part of the sur-face of the refractory protection wall, on the hearth side.
According to the present invention, each fire-brick 5 has formed 15 on it inner face 8 at least one blind recess 6 having a longitudinal axis 10 extending across the fire-brick thickness and inclined at an an-gle a to said inner face 8.
According to a preferred form of embodiment of the present inven-tion, this angle a will advantageously lie in the range of 45 - 90, 20 and the longitudinal axis 10 will extend upwardly to impart the self-locking feature to the fire-brick 5 by mere gravity, as actually shown in Figure 2.
In another preferred form of embodiment, each fire-brick 5 has two blind recesses 6, 11 formed therein, the longitudinal axes 10, 12 25 respectively of which being disposed in a common axial plane substantial-ly at right angles to the inner face 8. Furthermore, these axes 10, 12 are substantially parallel to each other. Thus, when fitting the fire-brick in position, any undesired pivoting movement thereof with res~ect to its fixing stud 7 will be safely prevented.
Moreover, as also shown in Figure 1 the inner face 8 of fire-brick 5 has two spaced grooves 13, 14 of semi-circular cross-sectional configuration formed therein. The distance between centres of these grooves 13, 14 corresponds substantially to that of said tubes 2. In this case, the blind recess or recesses 6, 11 are disposed in the thick-35 est area 15 of the fire-brick, for example substantially midway of said grooves 13, 14.
In fact, according to the method of the present invention, the blind recesses 6, 11 as well as the corresponding fixing studs 7 pro-vided for suspending and self-locking the fire-bricks 5 are disposed ~ 2~.00;~
in staggered relationship to prevent any undesired "flue effect" fromdeveloping in the jointing of the fire-bricks, as shown more particu-larly in Figure 3.
This arrangement is made possible notably by the fact that each 5 fire-brick 5 covers a pair of adjacent tubes 2 and is suspended from, and secured by, the corresponding fixing studs 7 projecting from the fin 3 disposed between, and welded to, said pair of adjacent tubes 2. The a-bove-described form of embodiment of fire-brick 5 is perfectly suitable to this staggered fitting method.
However, other fire-brick sizes may be contemplated, notably when it is desired that each brick covers three tubes or more, without departing from the basic principle of the invention.
When carrying out the method of the present invention by build-ing a refractory protection wall structure consisting of a plurality of 15 fire-bricks 5, each fire-brick is provided with a pair of blind recesses 6, 11 disposed substantially along a common vertical axis, and fixing studs 7 having a configuration consistent with that of said blind re-cesses are welded to the fins 3 of tubular panels 1 according to the di-mensions of each fire-brick 5.
Thus, by welding the fixing studs 7 to said fins 3, the mechanic-al strength of tubes 2 constituting the panels 1 is not impaired. How-ever, it is quite possible to weld these fixing studs 7 to the tube gene-ratrices, provided that the bricks and their recesses are designed ac-csrdingly .
Finally, when building a refractory protection wall separating the combustion chamber from the tubular panel according to the method of the present invention, the fluid-tightness between ad~acent fire-bricks 5 is obtained by providing a refractory seal 20 between each top, bottom and lateral face 16 - 19 of fire-bricks 5.
For this purpose, each top, bottom and lateral face 16 - 19 of fire-bricks 5 has a relatively shallow groove 21 formed therein for re-ceiving this refractory seal 20.
This seal 20 may consist of any suitable refractory material pre-serving a certain resiliency even at high temperature, as will readily 35 occur to those conversant with the art.
Of course, other forms of embodiment may be devised for the pre-sent invention without departing from the basic principles thereof.
Claims (10)
1. A method of building refractory protection walls of furnaces, ovens or combustion chambers, for boilers or the like for incinerating household refuse, garbage or industrial waste or refuse, for protecting hearth walls, said hearth walls consisting of panels consisting of a cluster of tubes assembled by welded fins, wherein said refractory protection wall consists of a plurality of shaped fire-bricks having inner and outer surfaces, said method comprising the steps of:
providing at least one blind recess on the inner surfaces of each of said fire-bricks;
providing said panel to be protected with a plurality of fixing studs adapted to correspond to and engage said at least one blind recess of each of said fire-bricks;
suspending each of said fire-bricks from a corresponding fixing stud or studs wherein said fire-bricks are held in position by gravity and wherein said fire-bricks are positioned in overlying adjacent relationship.
providing at least one blind recess on the inner surfaces of each of said fire-bricks;
providing said panel to be protected with a plurality of fixing studs adapted to correspond to and engage said at least one blind recess of each of said fire-bricks;
suspending each of said fire-bricks from a corresponding fixing stud or studs wherein said fire-bricks are held in position by gravity and wherein said fire-bricks are positioned in overlying adjacent relationship.
2. The method of building refractory protection walls according to claim 1, wherein said fire-bricks are shaped to accommodate the configuration of the tubes to be protected, and wherein said at least one blind recess of each of said fire-bricks is located in the area corresponding to the major thickness of said fire-brick and such that a substantially constant cross-section is preserved around said at least one blind recess to avoid any impairment of the mechanical strength of said fire-brick.
3. The method of building refractory protection walls according to claim 1, wherein said at least one blind recess as well as the corresponding fixing studs are positioned to facilitate a staggered arrangement of said fire-bricks.
4. The method of building a refractory protection wall according to claim 1, further including the step of providing a refractory seal between top, bottom and lateral faces of said fire-bricks to obtain fluid tightness between adjacent ones of said fire-bricks.
5. The method of building refractory protection walls according to any of claims 1, 2, 3 or 4, further including the step of welding said fixing studs to the fins of said tubular panels.
6. The method of building refractory protection walls according to claims 1, 2, 3 or 4 wherein each of said fire-bricks is provided with a pair of blind recesses, said blind recesses being disposed substantially in a common vertical plane.
7. A fire-brick for use in a refractory wall composed of a plurality of shaped fire-bricks for the protection of a hearth wall, the hearth wall being provided with panels composed of a cluster of tubes assembled by welded fins and having a plurality of fixing studs, said fire-bricks having a volumetric configuration consistent with said panel, each fire-brick having an inner face and an outer face, and comprising on its inner face at least one blind recess having a longitudinal axis extending across and inclined to said inner face, the fixing studs of said panels matching with and being adapted to engage the blind recesses of the plurality of fire-bricks composing the refractory wall, each of said fire-bricks being suspended from corresponding fixing studs to be held in position by gravity and self-locked at least by the overlying adjacent fire-brick of the refractory wall.
8. The fire-brick of claim 7, wherein each said fire-bricks has a top, bottom and lateral face and a groove is formed in each said face for engagement by a refractory seal.
9. The fire-brick of claim 7, wherein a pair of spaced blind recesses are provided having their longitudinal axes disposed in substantially co-planar parallel relationship and at right angles to said inner face of said fire-brick.
10. The fire-brick of claim 9, wherein the inner face of each said fire-brick has a pair of grooves corresponding to said panel tubes and having a distance between centers corresponding substantially to that of said tubes, and said blind recesses being located in the area of major thickness of said fire-brick and being equally spaced from said grooves.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000540415A CA1288003C (en) | 1987-06-23 | 1987-06-23 | Method of building refractory protection walls of ovens, furnaces andcombustion chambers, and fire- brick therefor |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA000540415A CA1288003C (en) | 1987-06-23 | 1987-06-23 | Method of building refractory protection walls of ovens, furnaces andcombustion chambers, and fire- brick therefor |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1288003C true CA1288003C (en) | 1991-08-27 |
Family
ID=4135963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA000540415A Expired - Lifetime CA1288003C (en) | 1987-06-23 | 1987-06-23 | Method of building refractory protection walls of ovens, furnaces andcombustion chambers, and fire- brick therefor |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1288003C (en) |
-
1987
- 1987-06-23 CA CA000540415A patent/CA1288003C/en not_active Expired - Lifetime
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