CN220454236U - Rare earth rotary kiln heat insulation structure - Google Patents
Rare earth rotary kiln heat insulation structure Download PDFInfo
- Publication number
- CN220454236U CN220454236U CN202321993465.2U CN202321993465U CN220454236U CN 220454236 U CN220454236 U CN 220454236U CN 202321993465 U CN202321993465 U CN 202321993465U CN 220454236 U CN220454236 U CN 220454236U
- Authority
- CN
- China
- Prior art keywords
- layer
- heat preservation
- rotary kiln
- rare earth
- heat
- 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.)
- Active
Links
- 238000009413 insulation Methods 0.000 title claims abstract description 69
- 229910052761 rare earth metal Inorganic materials 0.000 title claims abstract description 41
- 150000002910 rare earth metals Chemical class 0.000 title claims abstract description 38
- 238000004321 preservation Methods 0.000 claims abstract description 56
- 230000009970 fire resistant effect Effects 0.000 claims abstract description 27
- 239000000463 material Substances 0.000 claims description 13
- 238000005266 casting Methods 0.000 claims description 8
- HBMJWWWQQXIZIP-UHFFFAOYSA-N silicon carbide Chemical compound [Si+]#[C-] HBMJWWWQQXIZIP-UHFFFAOYSA-N 0.000 claims description 8
- 229910010271 silicon carbide Inorganic materials 0.000 claims description 8
- YKTSYUJCYHOUJP-UHFFFAOYSA-N [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] Chemical compound [O--].[Al+3].[Al+3].[O-][Si]([O-])([O-])[O-] YKTSYUJCYHOUJP-UHFFFAOYSA-N 0.000 claims description 5
- 239000000378 calcium silicate Substances 0.000 claims description 5
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 5
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 5
- 239000000919 ceramic Substances 0.000 claims description 5
- 239000000835 fiber Substances 0.000 claims description 5
- 239000004964 aerogel Substances 0.000 claims description 3
- PNEYBMLMFCGWSK-UHFFFAOYSA-N aluminium oxide Inorganic materials [O-2].[O-2].[O-2].[Al+3].[Al+3] PNEYBMLMFCGWSK-UHFFFAOYSA-N 0.000 claims description 3
- 230000000694 effects Effects 0.000 abstract description 3
- 239000000243 solution Substances 0.000 description 4
- 238000000034 method Methods 0.000 description 3
- -1 rare earth carbonate Chemical class 0.000 description 3
- QAOWNCQODCNURD-UHFFFAOYSA-N sulfuric acid Substances OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 description 3
- RNFJDJUURJAICM-UHFFFAOYSA-N 2,2,4,4,6,6-hexaphenoxy-1,3,5-triaza-2$l^{5},4$l^{5},6$l^{5}-triphosphacyclohexa-1,3,5-triene Chemical compound N=1P(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP(OC=2C=CC=CC=2)(OC=2C=CC=CC=2)=NP=1(OC=1C=CC=CC=1)OC1=CC=CC=C1 RNFJDJUURJAICM-UHFFFAOYSA-N 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 2
- 239000011449 brick Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000003063 flame retardant Substances 0.000 description 2
- 238000002386 leaching Methods 0.000 description 2
- 238000004519 manufacturing process Methods 0.000 description 2
- 238000007670 refining Methods 0.000 description 2
- 239000002699 waste material Substances 0.000 description 2
- 239000005995 Aluminium silicate Substances 0.000 description 1
- ATRRKUHOCOJYRX-UHFFFAOYSA-N Ammonium bicarbonate Chemical compound [NH4+].OC([O-])=O ATRRKUHOCOJYRX-UHFFFAOYSA-N 0.000 description 1
- 229910000013 Ammonium bicarbonate Inorganic materials 0.000 description 1
- 229910000323 aluminium silicate Inorganic materials 0.000 description 1
- 235000012211 aluminium silicate Nutrition 0.000 description 1
- 235000012538 ammonium bicarbonate Nutrition 0.000 description 1
- 239000001099 ammonium carbonate Substances 0.000 description 1
- 239000007864 aqueous solution Substances 0.000 description 1
- 239000003575 carbonaceous material Substances 0.000 description 1
- 125000005587 carbonate group Chemical group 0.000 description 1
- 229910010293 ceramic material Inorganic materials 0.000 description 1
- 239000012141 concentrate Substances 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000001914 filtration Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002156 mixing Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001376 precipitating effect Effects 0.000 description 1
- 230000003014 reinforcing effect Effects 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
Landscapes
- Muffle Furnaces And Rotary Kilns (AREA)
Abstract
The utility model discloses a rare earth rotary kiln heat preservation structure, and relates to the technical field of rotary kiln equipment. The rotary kiln comprises an outer cylinder body of the rare earth rotary kiln, and further comprises a heat insulation layer, a heat preservation layer, a supporting layer and a fire-resistant layer which are arranged on the inner wall of the outer cylinder body, wherein heat preservation nails are embedded in the supporting layer and the fire-resistant layer; the heat insulation layer, the heat preservation layer, the supporting layer and the refractory layer are sequentially distributed from the inner wall of the outer cylinder body towards the inside of the outer cylinder body, and the supporting layers are a plurality of groups which are mutually parallel and uniformly distributed along the extending direction of the axis of the outer cylinder body; the two ends of the heat preservation nail are respectively pre-embedded in the supporting layer and the refractory layer and used for connecting and fixing the supporting layer and the refractory layer. The supporting layer plays a supporting role, is arranged among the heat insulation layer, the heat preservation layer and the fire-resistant layer, and also strengthens and supports the fire-resistant layer through the heat preservation nails, so that the strength of the fire-resistant layer is ensured, falling off is avoided, the influence on the respective service performance due to the perforation design of the heat insulation layer and the heat preservation layer is avoided, and the heat preservation effect and the structural stability of the rare earth rotary kiln are improved.
Description
Technical Field
The utility model relates to the technical field of rotary kiln equipment, in particular to a rare earth rotary kiln heat insulation structure.
Background
When the rotary kiln is applied to the rare earth field, one process is a process of roasting concentrated sulfuric acid to obtain rare earth carbonate, namely, mixing rare earth concentrate and sulfuric acid in the rotary kiln for roasting. The roasted mine is leached by water, and then soluble rare earth sulfate enters into an aqueous solution, which is called leaching solution. Then adding ammonium bicarbonate into the leaching solution, precipitating the rare earth in carbonate form, and filtering to obtain the rare earth carbonate. Because the rare earth has extremely high value, the stability and the heat preservation capability of the rotary kiln are very important.
As in the prior art, publication (bulletin) numbers: CN211060625U, patent title: the rotary kiln comprises a heat insulation structure and a rotary kiln using the heat insulation structure, wherein the heat insulation structure comprises a heat insulation layer arranged on the inner wall of a cylinder, a heat insulation layer arranged on one side of the heat insulation layer, a fire-resistant layer arranged on one side of the heat insulation layer and a plurality of heat insulation nails arranged on the cylinder; the heat preservation is micropore calcium silicate board, aluminium silicate folding blanket or ceramic fiber back lining board, and the flame retardant coating adopts refractory castable casting shaping, and the one end of each heat preservation nail runs through heat preservation and stays in the flame retardant coating. Thus, the heat-insulating layer is a microporous calcium silicate plate, an aluminum silicate folding blanket or a ceramic fiber backing plate, and the volume weight and the heat conduction coefficient of the three substances are smaller than those of the refractory bricks, so that the manufacturing cost and the running cost are reduced, and the heat-insulating layer is more heat-insulating; the heat insulation structure is provided with a plurality of heat insulation nails and the fireproof layer is of an integrated structure formed by casting, and is not easy to fall off, so that the problems of easy fall off, high manufacturing cost, high operation cost and high appearance temperature of the heat insulation structure of the kiln are solved.
The technical problems that refractory bricks of a refractory layer fall off or split easily after equipment runs for a period of time, the internal structure of a rotary kiln is easy to fall off and the like are solved through the reinforcing mode of heat preservation nails in the prior art, but a large number of heat preservation nails are required to penetrate through the heat insulation layer and the heat preservation layer to enable the heat insulation layer and the heat preservation layer to be passively provided with holes, the heat insulation performance of the heat insulation layer and the heat preservation performance of the heat preservation layer are seriously affected, in the processing technology of rare earth materials, the heat preservation performance of the rotary kiln is poor or the internal structure is unstable, processing failure is easy to be caused, great economic loss and waste of rare earth materials are caused, and in order to avoid the situation, the supporting strength of the refractory layer can be enhanced, the rare earth rotary kiln heat preservation structure is designed.
Disclosure of Invention
The utility model aims to provide a rare earth rotary kiln heat insulation structure which can prevent holes from affecting the heat insulation performance of a heat insulation layer and the heat insulation performance of the heat insulation layer and can strengthen the supporting strength of a fire-resistant layer.
In order to achieve the above object, the present utility model provides the following technical solutions:
the utility model discloses a heat-insulating structure of a rare earth rotary kiln, which comprises an outer cylinder body of the rare earth rotary kiln, and further comprises a heat-insulating layer, a supporting layer and a fire-resistant layer which are arranged on the inner wall of the outer cylinder body, wherein heat-insulating nails are embedded in the supporting layer and the fire-resistant layer;
the heat insulation layer, the heat preservation layer, the supporting layer and the refractory layer are sequentially distributed from the inner wall of the outer cylinder body towards the inside of the outer cylinder body, and the supporting layers are mutually parallel and uniformly distributed along the extending direction of the axis of the outer cylinder body;
the two ends of the heat preservation nail are respectively pre-buried in the supporting layer and the refractory layer and used for connecting and fixing the supporting layer and the refractory layer.
Further, the heat insulation layer is an aerogel layer.
Further, the heat preservation layer is a microporous calcium silicate plate, an aluminum silicate folding blanket or a ceramic fiber backing plate.
Further, the supporting layer is a circular supporting body made of silicon carbide material, and the heat preservation nails are multiple groups with the same structure and are uniformly distributed on the circular supporting layer in a circumferential shape.
Further, the refractory layer is formed by casting refractory castable, and the refractory castable is high-alumina refractory castable.
Further, the heat preservation nail comprises a main nail body, and two ends of the main nail body are respectively embedded in the supporting layer and the refractory layer;
one end of the main nail body, which is positioned in the supporting layer, is provided with a circular limiting piece;
and one end of the main nail body, which is positioned in the refractory layer, is provided with an arc surface limiting piece.
In the technical scheme, the rare earth rotary kiln heat insulation structure provided by the utility model has the following beneficial effects:
the supporting layer plays a supporting role, is arranged among the heat insulation layer, the heat preservation layer and the fire-resistant layer, and also strengthens and supports the fire-resistant layer through the heat preservation nails, so that the strength of the fire-resistant layer is ensured, falling off is avoided, the influence on the respective service performance due to the perforation design of the heat insulation layer and the heat preservation layer is avoided, and the heat preservation effect and the structural stability of the rare earth rotary kiln are improved.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings that are needed in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments described in the present utility model, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
Fig. 1 is a schematic structural diagram of a rare earth rotary kiln insulation structure provided by an embodiment of the utility model;
fig. 2 is a radial sectional view of a rare earth rotary kiln insulation structure provided by an embodiment of the utility model;
fig. 3 is a schematic structural view of a heat insulation nail of a rare earth rotary kiln heat insulation structure according to an embodiment of the present utility model;
fig. 4 is a top view of a heat insulation nail of a rare earth rotary kiln heat insulation structure provided by an embodiment of the utility model.
Reference numerals illustrate:
1. an outer cylinder; 2. a thermal insulation layer; 3. a heat preservation layer; 4. a support layer; 5. a refractory layer; 6. a main nail body; 7. a circular limiting piece; 8. and a cambered surface limiting piece.
Detailed Description
In order to make the technical scheme of the present utility model better understood by those skilled in the art, the present utility model will be further described in detail with reference to the accompanying drawings.
See fig. 1-4;
the rare earth rotary kiln heat insulation structure comprises an outer cylinder body 1 of the rare earth rotary kiln, a heat insulation layer 2, a heat insulation layer 3, a support layer 4 and a fire-resistant layer 5 which are arranged on the inner wall of the outer cylinder body 1, wherein heat insulation nails are pre-buried in the support layer 4 and the fire-resistant layer 5;
the heat insulation layer 2, the heat insulation layer 3, the supporting layer 4 and the fire-resistant layer 5 are sequentially distributed from the inner wall of the outer cylinder body 1 towards the inside of the outer cylinder body, namely, the heat insulation layer 2, the heat insulation layer 3, the supporting layer 4 and the fire-resistant layer 5 form a heat insulation structure of the rotary kiln, the supporting layer 4 is a plurality of groups which are mutually arranged in parallel and are uniformly distributed along the extending direction of the axis of the outer cylinder body 1, and the supporting layer 4 is uniformly distributed to uniformly share the supporting stress on the heat insulation layer 2 and the heat insulation layer 3 and the bearing stress on the fire-resistant layer 5 through heat insulation nails, so that the stability of the heat insulation structure of the rare earth rotary kiln is better ensured;
the two ends of the heat preservation nail are respectively pre-buried in the supporting layer 4 and the fire-resistant layer 5 and used for connecting and fixing the supporting layer 4 and the fire-resistant layer 5, under the structural distribution, the heat preservation nail does not pass through the heat insulation layer 2 and the heat preservation layer 3, so that the heat insulation layer 2 and the heat preservation layer 3 do not need to be perforated, and the heat insulation performance of the heat insulation layer 2 and the heat preservation performance of the heat preservation layer 3 are ensured.
Furthermore, the heat insulation layer 2 is an aerogel layer and has good heat insulation performance.
Further, the heat preservation layer 3 is a microporous calcium silicate plate, an aluminum silicate folding blanket or a ceramic fiber backing plate, and has good heat preservation performance.
Further, the supporting layer 4 is a circular supporting body made of silicon carbide materials, the heat preservation nails are multiple groups with the same structure and are uniformly distributed on the circular supporting layer 4 in a circumferential shape, and stability of the structure and uniformity of stress of the lower supporting layer 4 connected with the heat preservation nails are guaranteed. In this embodiment, the supporting layer 4 is a ring-shaped supporting body made of silicon carbide, so that the silicon carbide is not easy to deform at high temperature, and the rigidity and strength of the silicon carbide are improved along with the increase of temperature, so that the silicon carbide is widely applied to high-temperature structural members. And the material is not limited to silicon carbide material, and ceramic material, other carbon material or metal material and the like can be selected according to specific requirements, so that the material has good supporting strength and high temperature and open flame resistance.
Further, the refractory layer 5 is formed by casting refractory castable, the refractory castable is high-alumina refractory castable, and heat preservation nails can be pre-buried in the casting process.
Further, the heat preservation nail comprises a main nail body 6, and two ends of the main nail body 6 are respectively embedded in the supporting layer 4 and the refractory layer 5;
one end of the main nail body 6, which is positioned in the supporting layer 4, is provided with a circular limiting piece 7, so that the connection strength between the main nail body 6 and the supporting layer 4 is ensured, and the main nail body 6 is prevented from being separated from the supporting layer 4;
one end of the main nail body 6, which is positioned in the refractory layer 5, is provided with an arc surface limiting piece 8, the area of which is larger than that of the circular limiting piece 7, and the main nail body 6 and the refractory layer 5 are connected with each other in a larger area, so that the connection strength between the main nail body 6 and the refractory layer 5 is ensured, the main nail body 6 is prevented from being separated from the refractory layer 5, and the overall structural stability of the heat insulation structure of the rare earth rotary kiln is also ensured.
The structure of the heat preservation nail increases the strength of the casting material of the refractory layer 5 and the strength of the supporting layer 4, and the problem that the casting material of the refractory layer 5 falls off in the operation process is greatly reduced by integral forming, so that the problem of instability of the structure of a kiln heat preservation structure which is easy to fall off in the prior art is solved, the safety in refining of rare earth materials is also ensured, the processing problems of failure and the like in refining of the rare earth materials caused by the problems of poor heat preservation performance, low structural stability and the like of the rotary kiln heat preservation structure are avoided, and serious economic loss and waste of the rare earth materials are avoided.
In the technical scheme, the rare earth rotary kiln heat insulation structure provided by the utility model has the following beneficial effects:
the supporting layer plays a supporting role, is arranged among the heat insulation layer, the heat preservation layer and the fire-resistant layer, and also strengthens and supports the fire-resistant layer through the heat preservation nails, so that the strength of the fire-resistant layer is ensured, falling off is avoided, the influence on the respective service performance due to the perforation design of the heat insulation layer and the heat preservation layer is avoided, and the heat preservation effect and the structural stability of the rare earth rotary kiln are improved.
While certain exemplary embodiments of the present utility model have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the utility model. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the utility model, which is defined by the appended claims.
Claims (6)
1. The heat-insulating structure of the rare earth rotary kiln comprises an outer cylinder body (1) of the rare earth rotary kiln and is characterized by further comprising a heat-insulating layer (2), a heat-insulating layer (3), a supporting layer (4) and a fire-resistant layer (5) which are arranged on the inner wall of the outer cylinder body (1), wherein heat-insulating nails are embedded in the supporting layer (4) and the fire-resistant layer (5);
the heat insulation layer (2), the heat insulation layer (3), the supporting layer (4) and the fire-resistant layer (5) are sequentially distributed from the inner wall of the outer cylinder body (1) towards the inside of the outer cylinder body, and the supporting layer (4) is a plurality of groups which are mutually parallel and uniformly distributed along the extending direction of the axis of the outer cylinder body (1);
the two ends of the heat preservation nail are respectively embedded in the supporting layer (4) and the fire-resistant layer (5) and used for connecting and fixing the supporting layer (4) and the fire-resistant layer (5).
2. The rare earth rotary kiln insulation structure according to claim 1, characterized in that the insulation layer (2) is an aerogel layer.
3. The rare earth rotary kiln insulation structure according to claim 1, characterized in that the insulation layer (3) is a microporous calcium silicate board, an aluminum silicate folding blanket or a ceramic fiber backing plate.
4. The rare earth rotary kiln heat preservation structure according to claim 1, wherein the support layer (4) is a circular ring-shaped support body made of silicon carbide material, and the heat preservation nails are multiple groups with the same structure and are uniformly distributed on the circular ring-shaped support layer (4) in a circumferential shape.
5. The rare earth rotary kiln insulation structure according to claim 1, wherein the refractory layer (5) is formed by casting refractory castable, and the refractory castable is high-alumina refractory castable.
6. The rare earth rotary kiln heat preservation structure according to claim 1, wherein the heat preservation nail comprises a main nail body (6), and two ends of the main nail body (6) are respectively embedded in the supporting layer (4) and the refractory layer (5);
one end of the main nail body (6) positioned in the supporting layer (4) is provided with a circular limiting piece (7);
one end of the main nail body (6) positioned in the refractory layer (5) is provided with an arc surface limiting piece (8).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321993465.2U CN220454236U (en) | 2023-07-26 | 2023-07-26 | Rare earth rotary kiln heat insulation structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321993465.2U CN220454236U (en) | 2023-07-26 | 2023-07-26 | Rare earth rotary kiln heat insulation structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220454236U true CN220454236U (en) | 2024-02-06 |
Family
ID=89737993
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321993465.2U Active CN220454236U (en) | 2023-07-26 | 2023-07-26 | Rare earth rotary kiln heat insulation structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220454236U (en) |
-
2023
- 2023-07-26 CN CN202321993465.2U patent/CN220454236U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN105971189A (en) | Precast concrete sandwich cladding wall panel provided with ribs | |
| CN220454236U (en) | Rare earth rotary kiln heat insulation structure | |
| CN201508107U (en) | Energy efficient composite lining structure of grate furnace wall | |
| CN208671682U (en) | A kind of refractory brick of breakage-proof crack resistence | |
| CN204461079U (en) | A kind of connection quirk of carbon element anode roasting furnace | |
| CN104596288B (en) | A kind of connection quirk of carbon element anode roasting furnace | |
| JPH06307776A (en) | Heat insulation lining method for atmosphere furnace | |
| CN207081337U (en) | A kind of composite construction refractory brick | |
| CN212427638U (en) | Building outer wall heat preservation aluminum plate structure | |
| CN204535408U (en) | Masonry structure for preventing rotary kiln from falling bricks and reducing gas consumption | |
| CN204612484U (en) | A kind of high temperature industrial furnace novel lining structure | |
| CN210937109U (en) | Novel safe heat preservation lining structure | |
| CN213778642U (en) | Arc-shaped carbon brick and rotary kiln | |
| CN201746470U (en) | Fiber composite module for heat treatment furnace lining | |
| CN208108842U (en) | A kind of heat insulation type high temperature resistant flue shutter | |
| CN111719766A (en) | Sintered porous brick convenient for construction | |
| CN215766483U (en) | Light refractory brick with low heat conduction | |
| CN217330708U (en) | Refractory material prefabricated part | |
| CN202734545U (en) | Novel industrial kiln | |
| CN219014963U (en) | Kiln capable of preventing refractory layer from collapsing | |
| CN221036777U (en) | Furnace top plate structure for anode roasting furnace | |
| CN205138209U (en) | Parapet brick for cement kiln | |
| CN205664679U (en) | Step -by -step brickwork steel structure | |
| CN205839157U (en) | The outer furnace shell of a kind of novel rare-earth electrolysis iron and steel | |
| CN218843447U (en) | External wall heat preservation composite wall |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |