CN218764564U - Double-chamber kiln furnace lining support refractory material structure - Google Patents
Double-chamber kiln furnace lining support refractory material structure Download PDFInfo
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- CN218764564U CN218764564U CN202222760389.2U CN202222760389U CN218764564U CN 218764564 U CN218764564 U CN 218764564U CN 202222760389 U CN202222760389 U CN 202222760389U CN 218764564 U CN218764564 U CN 218764564U
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Abstract
The utility model discloses a two thorax kiln furnace lining pillar refractory material structures, including the interior C lining that two relative mirror image's semicircular outer C linings and centre passage formed of centre passage connection, two outer C linings and straight line part form the ring brick layer, the coating that the ring brick layer inwards set gradually from the box hat and two-layer fibreboard, level neatly transversely set up insulating brick, mullite brick side by side, erect in the middle of the ring brick layer and be provided with the pillar, have the pouring material around the pillar and between the ring brick layer, ring brick layer bottom is equipped with the steel deck, has the cement blanket on the steel deck, odd number layer in the ring brick layer presses close to one of pouring material around the refractory brick pillar the insulating brick level vertically sets up and the side is pressed close to the box hat, this insulating brick vertically is provided with a resistant firebrick to one side level in the stove, and the partial vertical insert the pouring material position of this piece. The utility model discloses can solve two thorax kiln pillars and refractory material and split easily and produce the transversal joint, destroy the problem of brickwork.
Description
Technical Field
The utility model belongs to the technical field of steel manufacturing and equipment technique and specifically relates to a masonry structure of near pillar refractory material part of two thorax kiln furnace wall.
Background
The double-hearth kiln has the advantages of low energy consumption, excellent product quality and the like, as shown in figure 1, a general double-hearth kiln comprises two semicircular hearths which are opposite to each other and are in mirror image connection through a middle channel, a furnace lining of the furnace is called an outer C lining A, the middle channel forms an approximate ellipse, the furnace lining of the furnace is called an inner C lining B, a straight line at the inner end of the semicircle of the outer C lining is connected with the inner C lining, two outer C linings and the straight line part form an annular brick layer, and 8 vertically-arranged cooling pillars 6 are uniformly arranged at the connection part of the outer C lining and the inner C lining and in one circle of the inner C lining, and are generally called a double-C structure. The furnace lining structure of the double-hearth kiln is divided into a cooling zone, a calcining zone and a preheating zone from bottom to top, and is formed by building insulating bricks made of refractory materials with high temperature resistance, wear resistance and good heat preservation performance to form a multi-layer horizontal ring brick layer with a double-C structure (an inner C lining and an outer C lining). The outer ring brick layer of the kiln is counted from the bottom of the kiln chamber for 194 layers in sequence.
Wherein the cooling zone and the bottom of the steel structure are leveled by adopting low cement casting material, and then the building of the cooling zone is started. The brick is built by sequentially adopting coating materials, two layers of fiber boards, insulating bricks horizontally, neatly, side by side and transversely arranged and high-strength refractory bricks (namely main working layer bricks) from 1 to 40 layers and from the steel shell structure to the outside. Wherein the thickness of the fiber board is 30mm, the thickness of the insulating brick is 230mm, and the thickness of the high-strength clay insulating brick is 260mm. When each layer is built, expansion gaps are reserved in the circular rings of the annular brick layers of the kiln at certain intervals.
From 41 layers to 82 layers, as the height of the kiln is gradually close to the calcining zone area, the working temperature is correspondingly increased, and the brick lining working layer brick is changed into a high-alumina refractory brick.
The middle channel is provided with a fire door for observing and cleaning the channel operation and dust deposition conditions in the kiln during the kiln shutdown, and a setting template needs to be built during the masonry.
The temperature of a combustion zone can reach 1100 ℃ at most, and in consideration of the calcining characteristic and the temperature, bricks of the 83 th to 161 th rings of the outer ring of the kiln are constructed by adopting mullite bricks. As shown in figure 2, the furnace lining sequentially adopts coating materials and two layers of fiberboards 8 from the structure of the steel shell 1 to the outside, and insulating bricks 7 and mullite bricks 2 are horizontally, regularly, side by side and transversely arranged.
As shown in fig. 2, anchoring parts and masonry castable 5 are welded beside a strut 6 on a steel plate 1 at the bottom of a steel structure inside a kiln, a cement layer 10 on the steel plate 1 and a strut structure, and are used for protecting the steel structure part. And meanwhile, thermocouples are uniformly arranged in the calcining inner and outer ring areas of each kiln chamber and are used for detecting the calcining condition of the kiln.
And the 162 th layer to the 194 th layer adopt high-strength refractory bricks as working layers and are used as a part of a preheating zone.
The whole kiln structure should be strictly symmetrical, and in order to ensure the construction period, the building of two kiln chambers can be carried out simultaneously. In the building process, the condition that the brick joints of the upper and lower adjacent brick layers are overlapped is avoided as much as possible, namely, the two adjacent bricks in the upper and lower directions are stacked and built orderly, and meanwhile, the mortar is smeared uniformly in a sufficient amount.
Expansion joints are designed among the refractory bricks, the refractory materials near the pillars of the double-hearth kiln are in a straight joint 9 structure (shown in figures 2 and 3) formed by combining the castable and the refractory bricks, when the temperature of the kiln changes, the refractory bricks expand with heat and contract with cold, the horizontal direction can generate enlarged straight joint 9 joints, so that hot air in the kiln directly enters the heat-insulating layer along the straight joint between the bricks and the castable of the pillars, and the heat-insulating layer is burnt and damaged; two adjacent bricks made of refractory materials in the up-down direction are stacked and built in order, so that straight seams 9 are formed at junctions from top to bottom and are easy to crack, high-temperature airflow scouring is formed on the bricks of the rear heat-insulating layer, and the whole furnace wall is damaged. The masonry structure must be modified to address this unreasonable masonry structure.
Disclosure of Invention
The utility model aims to solve the problem that a two thorax kiln furnace wall pillar refractory material structure is provided to solve two thorax kiln pillars and refractory material and split easily and produce the transversal joint, destroy the problem of brickwork.
In order to solve the above problem, the technical scheme of the utility model is that: the double-hearth kiln furnace lining support refractory material structure comprises two semicircular outer C liners and an inner C liner, wherein the two semicircular outer C liners are connected with the middle channel, the two semicircular inner ends of the outer C liners are connected with the inner C liner, the two outer C liners and the straight line part form a brick layer, the brick layer is sequentially coated with coating materials and two fiber plates from a steel shell inwards, insulating bricks and mullite bricks are horizontally and orderly arranged side by side in parallel, a support is vertically arranged in the middle of the brick layer, a castable is arranged between the periphery of the support and the brick layer, a steel plate layer is arranged at the bottom of the brick layer, a cement layer is arranged on the steel plate layer, an odd layer in the brick layer is close to one piece of the castable around the support, the insulating brick is horizontally and longitudinally arranged and is close to the steel shell, a refractory brick is horizontally and longitudinally arranged on one side in the furnace from the insulating brick, and part of the refractory brick is longitudinally inserted into the position of the castable.
In the above technical solution, a more specific solution may be: and the insulating bricks on one outer C lining close to the inner C lining are horizontally and longitudinally arranged and the side faces of the insulating bricks are close to the steel shell, one refractory brick is horizontally and longitudinally arranged towards one side in the furnace of the insulating brick, and the end faces of the insulating brick and the refractory brick are arranged in parallel and level and are partially inserted into the joint of the inner C lining and the outer C lining.
Further: one layer of heat-insulating bricks on one outer C lining close to the inner C lining are horizontally and longitudinally arranged on the bottom of the strut in the ring brick layer, the side faces of the heat-insulating bricks are close to the steel shell, one side of each heat-insulating brick facing the furnace is horizontally and longitudinally provided with a refractory brick, and the end faces of the heat-insulating bricks and the refractory bricks are arranged in parallel and partially inserted into the joint of the inner C lining and the outer C lining; and a reinforcing refractory brick is arranged at a position close to the mullite brick on the outer C lining of the inner C lining, and the reinforcing refractory brick is partially inserted into the joint of the inner C lining and the outer C lining.
Further: the reinforcing refractory brick is provided with a bayonet for clamping the inner side brick of the inner C lining.
Since the technical scheme is used, compared with the prior art, the utility model following beneficial effect has:
this refractory material structure of double-hearth kiln furnace lining pillar is vertically set up through the insulating brick level of the pillar position of odd number layer and is added the firebrick that a level vertically set up, and firebrick part inserts the pouring material position of pillar, make the pouring material of pillar and outer C lining no longer produce the straight joint on the horizontal direction, and the building of odd number layer and even number layer is different, the brick joint stagger joint of pillar is built by mistake, form the labyrinth joint effect from the top down, the straight joint on the upper and lower vertical direction on building by mistake has been avoided, hot-blast cluster heat preservation has been blockked, the effectual whole furnace lining of having protected, better refractory material structural seal has been realized.
Drawings
FIG. 1 is a top view of a prior art double hearth kiln lining;
FIG. 2 is a top view of a prior art dual hearth kiln lining column refractory construction;
FIG. 3 is a left side view of a top view of a prior art dual hearth kiln lining column refractory construction;
FIG. 4 is a top view of an odd number of layers of strut locations according to an embodiment of the present invention;
FIG. 5 is a top view of a bottom layer of a support post according to an embodiment of the present invention;
FIG. 6 is a plan view of an even number of brick layers of the ring brick layer according to the embodiment of the present invention;
fig. 7 is a left side view of a support post portion according to an embodiment of the present invention;
fig. 8 is a side view of a refractory structure according to an embodiment of the present invention.
Detailed Description
The embodiments of the present invention will be described in detail with reference to the accompanying drawings:
the refractory material structure of the double-hearth kiln lining support shown in fig. 4 to 8 comprises two semicircular outer C linings a which are opposite to each other and are connected through a middle channel and an inner C lining B which is formed by the middle channel, wherein the semicircular inner end straight line of the outer C lining is connected with the inner C lining, the two outer C linings and the straight line part form a ring brick layer, the ring brick layer is sequentially provided with coating materials and two fiber plates 8 from a steel shell 1 to the inside, heat-insulating bricks 7 and mullite bricks 2 are horizontally, orderly and transversely arranged side by side, a support 6 is vertically arranged in the middle of the ring brick layer, castable 5 is arranged between the periphery of the support 6 and the ring brick layer, a steel plate layer is arranged at the bottom of the ring brick layer, and a cement layer is arranged on the steel plate layer.
As shown in figure 4, an insulating brick 7 close to the castable 5 around the pillar is horizontally and longitudinally arranged on the odd-numbered layer of the ring brick layer, and the side face of the insulating brick 7 is close to the steel shell 1, a refractory brick 3 is horizontally and longitudinally arranged on one side of the insulating brick 7 facing the furnace, and part of the refractory brick 3 is longitudinally inserted into the position of the castable 5, so that a straight seam 9 between the insulating brick and the castable in the odd-numbered layer in the horizontal direction disappears.
As shown in figure 6, the insulating brick 7 on one outer C lining close to the inner C lining is horizontally and longitudinally arranged and is close to the steel shell 1 at the side surface, the refractory brick 3 is horizontally and longitudinally arranged on one side of the insulating brick 7 facing the furnace, the end surfaces of the insulating brick 7 and the refractory brick 3 are arranged in parallel and partially inserted into the joint of the inner C lining and the outer C lining, and straight seams 9 in the horizontal direction between the insulating brick on the even layer and the upper and lower layers of the support and the castable disappear.
The odd-numbered layers and the even-numbered layers are different in masonry, staggered masonry of brick joints of the support columns is achieved, straight joints in the vertical direction disappear, a labyrinth joint effect is formed from top to bottom, and cracking is prevented.
One layer of the bottom of the support column in the ring brick layer is as shown in figure 5, an insulating brick 7 on an outer C lining close to an inner C lining is horizontally and longitudinally arranged, the side face of the insulating brick 7 is close to the steel shell 1, a refractory brick 3 is horizontally and longitudinally arranged on one side of the insulating brick 7 towards the furnace, the end faces of the insulating brick 7 and the refractory brick 3 are arranged in a flush mode, and are all partially inserted into the joint of the inner C lining and the outer C lining, a reinforcing refractory brick 12 is arranged at the position close to a mullite brick on the outer C lining of the inner C lining, the reinforcing refractory brick 12 is partially inserted into the joint of the inner C lining and the outer C lining and is provided with a bayonet for clamping the inner side brick of the inner C lining, the reinforcing refractory brick 12 is inserted into the mullite brick, the supporting strength is supplemented, and the reinforcing refractory brick 12 is partially inserted into the joint of the inner C lining and the outer C lining and the bayonet, so that a straight seam in the horizontal direction is eliminated.
The masonry process comprises the following steps:
A. and leveling the steel plate layer at the bottom of the pillar around the pillar by using a cement material, and building a cement layer 10 on the steel plate layer 11 to ensure that the foundation of the steel plate layer for building a refractory material is horizontal.
B. The first layer in the ring brick layer is built on the steel plate layer 11, the insulating brick 7 on the outer C lining close to the inner C lining is horizontally and longitudinally built, the side face of the insulating brick 7 is close to the steel shell 1, the insulating brick 7 horizontally and longitudinally builds a refractory brick 3 towards one side in the furnace, the end faces of the insulating brick 7 and the refractory brick 3 are flush and built, part of the insulating brick 7 and part of the end faces of the refractory brick 3 are inserted into the joint of the inner C lining and the outer C lining, a reinforcing refractory brick 12 is built at the position close to the mullite brick on the outer C lining of the inner C lining, and part of the reinforcing refractory brick 12 is inserted into the joint of the inner C lining and the outer C lining and is provided with a bayonet for clamping the inner side brick of the inner C lining.
C. An odd layer (2n +1 layer) in the ring brick layer is horizontally and longitudinally built by one insulating brick 7 close to the castable 5 around the strut and is horizontally and longitudinally built by the side close to the steel shell 1, the insulating brick 7 horizontally and longitudinally builds a refractory brick 3 towards one side in the furnace, and part of the refractory brick 3 is longitudinally inserted into the position of the castable;
the even number layers (2 n layers) in the ring brick layers and the upper and lower layers of the struts are horizontally and longitudinally built by an insulating brick 7 on an outer C lining close to the inner C lining, the side surface of the insulating brick 7 is close to the steel shell 1, a refractory brick 3 is horizontally and longitudinally built by the insulating brick 7 towards one side in the furnace, and the end surfaces of the insulating brick 7 and the refractory brick 3 are flush and level to be built and are partially inserted into the joint of the inner C lining and the outer C lining.
D. When the ring brick layer building height reaches 1-1.5 m, a template is built around the pillar 6, mullite castable is used for pouring, after the castable is hardened, the template is removed, and a fiber board made of refractory materials with the thickness of about 5-8 mm is placed on the upper part of the castable; and C, repeating the step C until the masonry is finished.
According to the refractory material structure of the double-hearth kiln lining strut, the refractory bricks 3 which are horizontally and longitudinally arranged are added through the insulating brick horizontal longitudinal arrangement at the strut 6 part of the odd-numbered layer, and the refractory bricks 3 are partially inserted into the position of the castable 5 of the strut, so that the straight joint in the horizontal direction is not generated between the castable of the strut and the outer C lining, meanwhile, the odd-numbered layer and the even-numbered layer are built differently, the staggered building of the brick joints of the strut is realized, the labyrinth joint effect is formed from top to bottom, the straight joint in the vertical direction from top to bottom in the building is avoided, the hot air is prevented from being mixed into the insulating layer, the whole lining is effectively protected, and the better sealing of the refractory material structure is realized.
Claims (4)
1. The utility model provides a double-hearth kiln furnace lining support refractory material structure, includes the interior C lining that two semicircular outer C linings and centre passageways that the centre passageway is connected formed to the semicircular of outer C lining, the semicircle inner straight line of outer C lining with interior C lining is connected, two outer C lining and straight line portion form the brick layer, the brick layer is followed the inside daubing that sets gradually of steel casing and two-layer fibreboard, level neatly transversely set up insulating brick, mullite brick side by side, erect in the middle of the brick layer and be provided with the pillar, around the pillar and have the pouring material between the brick layer, brick layer bottom portion is equipped with the steel deck, there is the cement layer on the steel deck, its characterized in that: and in the odd layers in the ring brick layer, one heat-insulating brick close to the castable around the strut is horizontally and longitudinally arranged, the side face of the heat-insulating brick is close to the steel shell, one refractory brick is horizontally and longitudinally arranged on one side of the heat-insulating brick towards the furnace, and part of the refractory brick is longitudinally inserted into the position of the castable.
2. The double-hearth kiln lining column refractory structure according to claim 1, wherein: the insulating bricks on the outer C lining close to the inner C lining are horizontally and longitudinally arranged and are close to the steel shell at the side faces, and the end faces of the insulating bricks and the refractory bricks are arranged in parallel and level and are partially inserted into the joint of the inner C lining and the outer C lining.
3. The double-hearth kiln lining column refractory structure according to claim 2, wherein: one layer of heat-insulating bricks on one outer C lining close to the inner C lining are horizontally and longitudinally arranged on the bottom of the strut in the ring brick layer, the side faces of the heat-insulating bricks are close to the steel shell, one side of each heat-insulating brick facing the furnace is horizontally and longitudinally provided with a refractory brick, and the end faces of the heat-insulating bricks and the refractory bricks are arranged in parallel and partially inserted into the joint of the inner C lining and the outer C lining; and a reinforcing refractory brick is arranged at a position close to the mullite brick on the outer C liner of the inner C liner, and the reinforcing refractory brick is partially inserted into the joint of the inner C liner and the outer C liner.
4. The double-hearth kiln lining column refractory structure according to claim 3, wherein: the reinforcing refractory bricks are provided with bayonets for clamping the inner side bricks of the inner C lining.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222760389.2U CN218764564U (en) | 2023-01-11 | 2023-01-11 | Double-chamber kiln furnace lining support refractory material structure |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202222760389.2U CN218764564U (en) | 2023-01-11 | 2023-01-11 | Double-chamber kiln furnace lining support refractory material structure |
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| CN218764564U true CN218764564U (en) | 2023-03-28 |
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| CN202222760389.2U Active CN218764564U (en) | 2023-01-11 | 2023-01-11 | Double-chamber kiln furnace lining support refractory material structure |
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