CN116718015A - Repair method of cyclone cone refractory material - Google Patents
Repair method of cyclone cone refractory material Download PDFInfo
- Publication number
- CN116718015A CN116718015A CN202211381737.3A CN202211381737A CN116718015A CN 116718015 A CN116718015 A CN 116718015A CN 202211381737 A CN202211381737 A CN 202211381737A CN 116718015 A CN116718015 A CN 116718015A
- Authority
- CN
- China
- Prior art keywords
- shell
- repair method
- cutting
- dismantling
- cone
- 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.)
- Pending
Links
- 238000000034 method Methods 0.000 title claims abstract description 33
- 239000011819 refractory material Substances 0.000 title claims abstract description 15
- 230000008439 repair process Effects 0.000 title claims description 24
- 238000005520 cutting process Methods 0.000 claims abstract description 22
- 238000004873 anchoring Methods 0.000 claims abstract description 10
- 238000009415 formwork Methods 0.000 claims abstract description 9
- 238000005266 casting Methods 0.000 claims description 8
- 229910052918 calcium silicate Inorganic materials 0.000 claims description 7
- 239000000378 calcium silicate Substances 0.000 claims description 7
- OYACROKNLOSFPA-UHFFFAOYSA-N calcium;dioxido(oxo)silane Chemical compound [Ca+2].[O-][Si]([O-])=O OYACROKNLOSFPA-UHFFFAOYSA-N 0.000 claims description 7
- 229910052791 calcium Inorganic materials 0.000 claims description 3
- 239000011575 calcium Substances 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 3
- 238000012423 maintenance Methods 0.000 claims 1
- 241000237942 Conidae Species 0.000 abstract description 6
- 238000010276 construction Methods 0.000 description 11
- 239000000463 material Substances 0.000 description 6
- 230000008569 process Effects 0.000 description 5
- 238000003466 welding Methods 0.000 description 4
- 238000005299 abrasion Methods 0.000 description 3
- OSMSIOKMMFKNIL-UHFFFAOYSA-N calcium;silicon Chemical compound [Ca]=[Si] OSMSIOKMMFKNIL-UHFFFAOYSA-N 0.000 description 3
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 239000011241 protective layer Substances 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- 230000002159 abnormal effect Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000001354 calcination Methods 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000007796 conventional method Methods 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 230000003628 erosive effect Effects 0.000 description 1
- 238000010304 firing Methods 0.000 description 1
- 229910052742 iron Inorganic materials 0.000 description 1
- 238000002372 labelling Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000010248 power generation Methods 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 238000009991 scouring Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009423 ventilation Methods 0.000 description 1
- 239000002918 waste heat Substances 0.000 description 1
Classifications
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27D—DETAILS OR ACCESSORIES OF FURNACES, KILNS, OVENS, OR RETORTS, IN SO FAR AS THEY ARE OF KINDS OCCURRING IN MORE THAN ONE KIND OF FURNACE
- F27D1/00—Casings; Linings; Walls; Roofs
- F27D1/16—Making or repairing linings increasing the durability of linings or breaking away linings
- F27D2001/1605—Repairing linings
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses a repairing method of a cyclone cone refractory material, which comprises the following steps: 1) Marking a damaged area outside the cone part of the cyclone, cutting and dismantling the damaged area, and taking down an old shell of the worn part of the cone part; 2) The anchoring piece is welded on the shell in a crisscross manner; 3) Carrying out formwork supporting on the inside of the cutting dismantling area, and pouring the outside of the cutting dismantling area; 4) After pouring, mounting the old shell on the cone shell; the equipment repairing method has the advantages of time and labor saving and high safety coefficient.
Description
Technical Field
The invention relates to repair of a cone part of a cyclone, in particular to a repair method of a refractory material of the cone part of the cyclone.
Background
The novel dry-method cement kiln is a large system. The raw materials are preheated, decomposed and calcined at high temperature to form clinker until the clinker is cooled and discharged, and the total length of the clinker is hundreds of meters in front and back. Moreover, the system is a main system, and also has huge auxiliary systems, such as a ventilation system, a waste heat power generation system and the like, which are all at high temperature, and all need the protection of refractory materials. However, such a huge primary and secondary system is often different in other conditions than in a severely chemically aggressive atmosphere, and the temperature is different not only in height but also in magnitude and frequency of change. The stress conditions are quite different, and the material is washed by air flow, worn by raw clinker and mechanically stressed. The air flow scouring strength, the abrasion and the mechanical stress are different, and the situation is very complex. Therefore, the performance requirements for refractory materials are quite complex. Therefore, the refractory material plays an important role in the firing system, and abnormal production is caused without the protection of the refractory material.
The cone part of the cyclone of the preheater needs to bear the influences of mechanical stress, chemical erosion, process calcination, internal pressure and the like in operation, and the phenomena of serious burning loss of refractory materials and the like can be caused for a long time, so that the shell of the cone part is damaged, and the conventional method comprises the following steps: a scaffold and a protective layer are erected in the cylinder by adopting a cone part to perform construction replacement; the construction difficulty is high, the construction time is long, and the safety coefficient is increased
Disclosure of Invention
The invention aims to provide a repair method of a cyclone cone refractory material, which has the advantages of time and labor saving and high safety coefficient.
In order to achieve the above object, the present invention provides a method for repairing a cyclone cone refractory material, comprising:
1) Marking a damaged area outside the cone part of the cyclone, cutting and dismantling the damaged area, and taking down an old shell of the worn part of the cone part;
2) The anchoring piece is welded on the shell in a crisscross manner;
3) Carrying out formwork supporting on the inside of the cutting dismantling area, and pouring the outside of the cutting dismantling area;
4) After casting, the old housing is mounted to the cone housing.
Preferably, before step 1), the repair method comprises: and the cooling kiln is used for more than 24 hours.
Preferably, before step 1), the repair method comprises: all manhole doors of the preheater system are opened to keep air circulation.
Preferably, the cutting demolition comprises: and marking a damaged area on the conical shell, cutting the periphery of the marked shell by using a cutter, and dismantling castable around the marked shell by using a pneumatic pick until the castable is dismantled to a thickness meeting the requirement, and stopping dismantling.
Preferably, in step 2), the spacing between two adjacent anchors is maintained at 180-220cm.
Preferably, in the step 3), a shell is attached between the anchoring parts by using a calcium silicate board, the periphery of the calcium silicate board is tightly tied on the anchoring parts by using 22# binding wires, and a five-centimeter board supporting die is used.
Preferably, the specification of the anchoring piece is S (8-12) (180-220) mm, the specification of the five-li plate is (12-1.3) (2.4-2.5) x 5cm, and the thickness of the silicon-calcium plate is 65-75mm.
Preferably, an expansion joint is placed in the formwork every 1.4-1.6 square, and the specification of the expansion joint is (8-12) cm x (8-12) cm.
Preferably, the casting is completed and then the casting is carried out for 12 hours with a mold, and then the mold is removed.
In the above technical solution, the repairing method provided by the present invention includes: the method comprises the steps of marking and cutting and removing a damaged castable, welding an anchoring piece on an iron plate, supporting a mold, pouring and installing the casting material to a cone shell. Specifically, the burning-out castable of the cone part of the cyclone barrel is removed outside, welded outside, supported outside and poured outside, and installed outside, so that the whole construction process is simple, safe and convenient.
Compared with the prior art, the method has the following beneficial effects:
1. the existing repair needs 1 day, and the replacement of the whole cone section needs 2 days, for example, the local repair scheme of the invention is adopted to save 1 day; take 5000t/d as an example: 5000 tons of clinker can be produced within 1 day;
2. the construction difficulty is low, the consumption time is short, and the safety risk is low.
3. The construction method does not need to set up any scaffold and protective layer for construction, has high operation safety performance, and is the safest construction method at home and abroad at present.
4. The construction method saves a lot of steel materials and labor for the country, and other features and advantages of the present invention will be described in detail in the detailed description section which follows.
Drawings
The accompanying drawings are included to provide a further understanding of the invention, and are incorporated in and constitute a part of this specification, illustrate the invention and together with the description serve to explain, without limitation, the invention. In the drawings:
fig. 1 is a physical diagram (black small block area is marked area in the figure) for marking damaged areas outside a cyclone cone in the repair method of the cyclone cone refractory material provided by the invention.
Detailed Description
The following describes specific embodiments of the present invention in detail with reference to the drawings. It should be understood that the detailed description and specific examples, while indicating and illustrating the invention, are not intended to limit the invention.
In the present invention, unless otherwise indicated, the terms "inner" and "outer" and the like are used merely to denote orientations of the terms in a normal use state or are commonly understood by those skilled in the art, and should not be construed as limitations of the terms.
The invention provides a repair method of a cyclone cone refractory material, which comprises the following steps:
1) Marking a damaged area outside the cone part of the cyclone, cutting and dismantling the damaged area, and taking down an old shell of the worn part of the cone part;
2) The anchoring piece is welded on the shell in a crisscross manner;
3) Carrying out formwork supporting on the inside of the cutting dismantling area, and pouring the outside of the cutting dismantling area;
4) After casting, the old housing is mounted to the cone housing.
In the above embodiment, in order to further secure the safety of the construction, preferably, before the step 1), the repairing method includes: and the cooling kiln is used for more than 24 hours.
In the above embodiment, in order to further secure the safety of the construction, preferably, before the step 1), the repairing method includes: all manhole doors of the preheater system are opened to keep air circulation.
In the present invention, the process of the cutting demolition may have multiple choices, but in order to improve the effect and efficiency of the cutting demolition, it is preferable that the cutting demolition includes: and marking a damaged area on the conical shell, cutting the periphery of the marked shell by using a cutter, and dismantling castable around the marked shell by using a pneumatic pick until the castable is dismantled to a thickness meeting the requirement, and stopping dismantling.
In the above embodiment, the interval between the adjacent two anchors may be selected within a wide range, but in order to further improve the strength after repair, alternatively, in step 2), the interval between the adjacent two anchors is maintained at 180-220cm.
In the above embodiment, in order to further improve stability of the anchor in the formwork, preferably, in step 3), a shell is applied by using a calcium silicate board between the anchors, the periphery of the calcium silicate board is tightly attached to the anchors by using 22# binding wires, and a formwork is supported by using a five-li board.
In the above embodiment, the specifications of the anchor, the pentacle plate and the calcium silicate plate may be selected within a wide range, but in order to further improve the strength after repair, it is preferable that the specifications of the anchor be S (8-12) ×180-220 mm, the specifications of the pentacle plate be (12-1.3) ×2.4-2.5) ×5cm, and the thickness of the calcium silicate plate be 65-75mm.
In the above embodiment, the expansion gap specification in the formwork process can be selected within a wide range, but in order to further improve the strength after repair, it is preferable that an expansion gap is placed in the formwork every 1.4-1.6 square, and the expansion gap specification is (8-12) cm x (8-12) cm.
In the above embodiment, in order to further improve the strength after repair, it is preferable that the casting is completed and then the mold is maintained for 12 hours, followed by demolding.
The invention is further illustrated by the following examples.
Example 1
Step 1:
1: must be carried out after 24 hours of cold kiln;
2. before dismantling, all manhole doors of the preheater system are opened to keep air circulation;
3. marking a damaged area outside the cone part of the cyclone (as shown in figure 1);
step 2
1: and marking a damaged area on the cone shell, and cutting the periphery of the marked shell by using a cutter.
2: and (3) preparing the pneumatic pick and the air pipe, correctly wearing the labor protection articles, and dismantling the castable around the labeling shell by using the pneumatic pick until the castable is dismantled to a thickness meeting the requirement, and stopping the dismantling.
3: and taking off the old shell of the worn part of the cone part.
Step 3
1. And judging whether a new cone shell needs to be replaced or not according to the size, the abrasion degree and the dimension of the damaged cone shell.
2. An anchor (S10 x 200 mm), a welder, a five-li plate (1.22 x 2.44 x 5), a square stock, an expansion joint (10 cm x 10 cm), a 70mm silico-calcium plate, and a cone new shell were prepared.
Step 4
1. The anchors S10 x 200mm were cross welded to the housing using a welder with the spacing between the anchors maintained at 200cm.
Step 5
The shell is adhered between the anchoring parts by using a 70mm silicon-calcium plate, the periphery of the silicon-calcium plate is tightly adhered to the anchoring parts by using 22# binding wires, a five-li plate (1.22 x 2.44 x 5) is used for supporting a die, an expansion joint is placed every 1.5 square, and pouring can be prepared after the supporting of the die is completed.
Step 6
And (3) compacting by using a vibrating rod in the pouring process, curing for 12 hours with a mold after pouring, demolding after waiting for 12 hours, and checking whether the surface is smooth and intact. And then delivering the material to an owner factory, aligning the material to the cone shell by using a chain block, and fully welding the welding seams around the material firmly by using a welding machine, so that the repair of the abrasion refractory material of the cone is completed.
The preferred embodiments of the present invention have been described in detail above with reference to the accompanying drawings, but the present invention is not limited to the specific details of the above embodiments, and various simple modifications can be made to the technical solution of the present invention within the scope of the technical concept of the present invention, and all the simple modifications belong to the protection scope of the present invention.
In addition, the specific features described in the above embodiments may be combined in any suitable manner, and in order to avoid unnecessary repetition, various possible combinations are not described further.
Moreover, any combination of the various embodiments of the invention can be made without departing from the spirit of the invention, which should also be considered as disclosed herein.
Claims (9)
1. A repair method of a cyclone cone refractory material is characterized by comprising the following steps:
1) Marking a damaged area outside the cone part of the cyclone, cutting and dismantling the damaged area, and taking down an old shell of the worn part of the cone part;
2) The anchoring piece is welded on the shell in a crisscross manner;
3) Carrying out formwork supporting on the inside of the cutting dismantling area, and pouring the outside of the cutting dismantling area;
4) After casting, the old housing is mounted to the cone housing.
2. The repair method according to claim 1, wherein prior to step 1), the repair method comprises: and the cooling kiln is used for more than 24 hours.
3. The repair method according to claim 1, wherein prior to step 1), the repair method comprises: all manhole doors of the preheater system are opened to keep air circulation.
4. The repair method of claim 1, wherein the cutting removal comprises: and marking a damaged area on the conical shell, cutting the periphery of the marked shell by using a cutter, and dismantling castable around the marked shell by using a pneumatic pick until the castable is dismantled to a thickness meeting the requirement, and stopping dismantling.
5. The repair method of claim 1, wherein in step 2), a spacing between adjacent two anchors is maintained at 180-220cm.
6. The method of repairing according to claim 1, wherein in step 3), the shell is applied between the anchors by using a silico-calcium plate, the silico-calcium plate is tightly wound around the anchors by using 22# binding wires, and a five-centimeter plate is used for supporting the mold.
7. The method of claim 6, wherein the anchor has a gauge S (8-12) (180-220) mm, the pentacyclic plate has a gauge (12-1.3) (2.4-2.5) x 5cm, and the calcium silicate plate has a thickness of 65-75mm.
8. The method of repairing of claim 6, wherein an expansion gap is placed in the form every 1.4-1.6 square, the expansion gap having a gauge of (8-12) cm x (8-12) cm.
9. The repair method according to claim 1, wherein the casting is completed with maintenance for 12 hours and then demolding.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211381737.3A CN116718015A (en) | 2022-11-06 | 2022-11-06 | Repair method of cyclone cone refractory material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202211381737.3A CN116718015A (en) | 2022-11-06 | 2022-11-06 | Repair method of cyclone cone refractory material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN116718015A true CN116718015A (en) | 2023-09-08 |
Family
ID=87873949
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202211381737.3A Pending CN116718015A (en) | 2022-11-06 | 2022-11-06 | Repair method of cyclone cone refractory material |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN116718015A (en) |
-
2022
- 2022-11-06 CN CN202211381737.3A patent/CN116718015A/en active Pending
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