CN203869485U - Repairing device of refractory materials of pelletizing rotary kiln - Google Patents
Repairing device of refractory materials of pelletizing rotary kiln Download PDFInfo
- Publication number
- CN203869485U CN203869485U CN201420181899.7U CN201420181899U CN203869485U CN 203869485 U CN203869485 U CN 203869485U CN 201420181899 U CN201420181899 U CN 201420181899U CN 203869485 U CN203869485 U CN 203869485U
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- rotary kiln
- expansion bolt
- repairing
- repairing device
- refractory materials
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Abstract
The utility model discloses a repairing device of refractory materials of a pelletizing rotary kiln. The repairing device comprises a bracing bar and two sets of expansion bolt sleeves and expansion bolts, and the lacing bar is welded between the expansion bolts. The utility model further discloses a method for repairing refractory materials of a rotary kiln through the repairing device. According to the repairing device, a device for repairing a rotary kiln, kiln liner materials and a construction method are modified, overall construction of machine made bricks is gradually weeded out, a construction structure combining high-aluminum mullite prefabricated bricks with anchoring hooks and high-aluminum mullite casting materials is formed, and the corresponding repairing method is provided. By means of the repairing device and method, the service life of refractory materials can be effectively prolonged, and good results are obtained in on-site application.
Description
Technical field
The utility model belongs to iron and steel domain, is specifically related to a kind of repair apparatus of applied to pelletizing rotary kiln refractory material and the refractory material method for repairing and mending of applied to pelletizing rotary kiln.
Background technology
In iron and steel enterprise, applied to pelletizing rotary kiln is one of capital equipment in sintering system.Because applied to pelletizing rotary kiln is worked for a long time under the environment of high temperature and HI high impact; often there will be rotary kiln refractory material obscission; particularly refractory material large area in high-temperature region comes off; the maximum ga(u)ge that comes off is 10cm left and right; along with constantly coming off of refractory material; the temperature of cylinder of rotary kiln part point has been brought up to 300 ° of left and right by original 210 °, has badly influenced the service life of rotary kiln.All changing the time between overhauls(TBO) for the general normal rotary kiln refractory material that saves production cost is 3-4.
If part pouring belt refractory material is repaired, and method is improper, and rotary kiln refractory brick and pouring belt after reparation can constantly come off.In actual production, applied to pelletizing rotary kiln refractory material uses and carries out large repairs less than 1 year half will all come off.
Utility model content
The purpose of this utility model is to provide a kind of repair apparatus of applied to pelletizing rotary kiln refractory material.
The utility model provide for repairing the device of rotary kiln, comprise lacing wire rod and two groups of expansion bolt sleeves and expansion bolt, described lacing wire rod is welded between expansion bolt.The effect of described lacing wire rod is reinforcement skeleton, prevent traditional handicraft repair when refractory material directly construction castable, without any slip-off preventing facility, refractory material holds caducous drawback.
Preferably, the bottom of described expansion bolt sleeve is tilted conical, and the middle part of described expansion bolt sleeve is provided with external screw thread, and it can play the effect of expansion fixed expansion bolt sleeve.
Preferably, one end of described expansion bolt sleeve is symmetrically arranged with otch.
Preferred, the outer surface of described expansion bolt sleeve is provided with through hole, and expansion staple is set in described through hole.
Preferred, described lacing wire rod comprises two metal bars, and the two ends cross weld of described metal bar together.Metal bar herein preferably compares the 1CR18NI9TI metal bar of heat-and corrosion-resistant.
The method that the utility model provides comprises the steps:
1) rotary kiln refractory material is come off place and peripheral tile kliner coating cleaned out, and exposes not scaling loss and soft refractory brick;
2) at the rotary kiln refractory material place that comes off, beat several holes and be used for fixing expansion bolt, on each refractory brick, at least make a call to 2 above holes;
3) the fixed expansion turnbuckle of this device is goed deep in hole, and formation fixed structure is installed;
4) be cast on fixed structure by castable.
Herein, the preferred corundum castable of castable.Be cast in corundum castable on the refractory brick of damage, when castable construction, control suitable moisture and enough vibrating time, ensure masonry densification.Be cast in corundum castable on the refractory brick of damage.The about 30-40 minute of presetting period that castable refractory needs, therefore, has touched while construction after one side castable and must wait half an hour in kiln, after pouring material reaches certain degree of hardness, builds the refractory brick that other face damages carrying out brickkiln.
Preferably, the height of described castable is lower than normal refractory brick height 10-20mm.
Preferably, described method also comprises the steps:
5) spray heat-resisting paint at the skin of castable.
Preferably, on castable and intact refractory brick, spray the high temperature resistant spray corundum carborundum coating that one deck 20-30mm is thick.
Preferred, when construction, the half wet shotcrete technology method of employing is constructed, and specifically comprises the steps:
First, corundum carborundum spray paint being added to 2%-3% water puts into mixer and carries out disengaging type stirring; Have bad luck in material spraying machine during without conglomeration until pug humidity, then spray gun pressure is adjusted to 0.5-0.7Mpa sprays; When spraying, manually the muzzle water yield is adjusted to 5%-7%, and disposable jet is to desired thickness (20-30mm); In spraying process, if there is dry wet interlayer or trickling phenomenon, tackle it and root out, clear up, then spraying again.
The utility model has carried out many improvement to prosthetic device, kiln lining material and building method, progressively having eliminated machine made brick entirety builds by laying bricks or stones, form the masonry construction combining with the high aluminum-containing mullite preformed bricks with anchoring hook and material pouring material of the same race, and provide corresponding restorative procedure, the method can effectively improve the service life of refractory material, has obtained good result at the scene in application.
Brief description of the drawings
Fig. 1, repair structure schematic diagram of the present utility model.
Fig. 2, use the utility model are repaired the refractory coating schematic diagram of rotary furnace.
Fig. 3, utilize furnace schematic diagram after the reparation of the utility model method.
Accompanying drawing mark:
1, cross lacing wire rod; 2, fixed expansion bolt; 3, clamp nut; 4, pad; 5, fixed expansion bolt sleeve; 6, expansion staple.
Detailed description of the invention
Structure as shown in Figure 1, its part that is prosthetic device described in the utility model, comprises cross lacing wire rod 1 and expansion bolt sleeve 5 and fixed expansion bolt 2, described cross lacing wire rod 1 is welded on fixed expansion bolt 2.The effect of described cross lacing wire rod 1 is reinforcement skeleton, prevent traditional handicraft repair when refractory material directly construction castable, without any slip-off preventing facility, refractory material holds caducous drawback.The bottom of described fixed expansion bolt sleeve 5 is tilted conical, and the middle part of described fixed expansion bolt sleeve 5 is provided with external screw thread, and it can play the effect of expansion fixed expansion bolt sleeve.Described fixed expansion turnbuckle 5 one end symmetries are processed into the otch of two long 15mm of wide 2mm, and its outer surface is processed into the through hole whorl hole that diameter is M5, is used for fixing expansion staple 6.
As shown in Figure 2, described cross lacing wire rod 1 comprises two metal bars, and the two ends cross weld of described metal bar together.Metal bar herein preferably compares the 1CR18NI9TI metal bar of heat-and corrosion-resistant.
While using this device to repair rotary kiln, when the work of the resistance to material strengthening of rotary kiln repair apparatus, first come off place and peripheral tile kliner coating of resistance to rotary kiln material cleaned out, exposed the not soft refractory brick of scaling loss.At the resistance to material of the rotary kiln place that comes off, making a call to two is the dark 30-50mm hole of 20MM according to size diameter, angle tilts about 45 degree, after fixed expansion bolt 2, clamp nut 3, pad 4, fixed expansion bolt sleeve 5, expansion staple 6 are assembled together, and welding cross lacing wire rod 1.
After bore operation, the work of resistance to material strengthening repair apparatus is goed deep in hole, tightened cross lacing wire rod 1 and fix clamp nut, fixed expansion turnbuckle spreading with spanner, make the whole hole of its overflow, the expansion staple in fixed expansion turnbuckle outside penetrates in refractory brick.Now, resistance to material strengthening repair apparatus and refractory brick form a fixed structure, and this fixed structure is ordered anchoring to be fixed in refractory brick to greatest extent.Be cast on the refractory brick of damage with corundum castable more afterwards, complete repair.
Corundum castable is built and can be carried out in accordance with the following steps:
Be cast in corundum castable on the refractory brick of damage, when castable construction, control suitable moisture and enough vibrating time, ensure masonry densification.Be cast in corundum castable on the refractory brick of damage.The about 30-40 minute of presetting period that castable refractory needs, therefore, has touched while construction after one side castable and must wait half an hour in kiln, after pouring material reaches certain degree of hardness, builds the refractory brick that other face damages carrying out brickkiln.The height of described castable is lower than normal refractory brick height 10-20mm.
After having built, the skin in castable sprays heat-resisting paint again, and this coating can be high temperature resistant spray corundum carborundum coating, and thickness is 20～30mm.When construction, preferably half wet shotcrete technology method is constructed, and specifically comprises the steps:
First, corundum carborundum spray paint being added to 2%-3% water puts into mixer and carries out disengaging type stirring; Have bad luck in material spraying machine during without conglomeration until pug humidity, then spray gun pressure is adjusted to 0.5-0.7Mpa sprays; When spraying, manually the muzzle water yield is adjusted to 5%-7%, and disposable jet is to desired thickness (20-30mm); In spraying process, if there is dry wet interlayer or trickling phenomenon, tackle it and root out, clear up, then spraying again.
Rotary kiln drying out curve after reparation is referring to Fig. 3.
Claims (5)
1. a repair apparatus for applied to pelletizing rotary kiln refractory material, is characterized in that, described device comprises lacing wire rod and two groups of expansion bolt sleeves and expansion bolt, and described lacing wire rod is welded between expansion bolt.
2. device according to claim 1, is characterized in that, the bottom of described expansion bolt sleeve is tilted conical, and the middle part of described expansion bolt sleeve is provided with external screw thread.
3. device according to claim 1, is characterized in that, one end of described expansion bolt sleeve is symmetrically arranged with otch.
4. device according to claim 1, is characterized in that, the outer surface of described expansion bolt sleeve is provided with through hole, and expansion staple is set in described through hole.
5. device according to claim 1, is characterized in that, described lacing wire rod comprises two metal bars, and the two ends cross weld of described metal bar together.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181899.7U CN203869485U (en) | 2014-04-15 | 2014-04-15 | Repairing device of refractory materials of pelletizing rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201420181899.7U CN203869485U (en) | 2014-04-15 | 2014-04-15 | Repairing device of refractory materials of pelletizing rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203869485U true CN203869485U (en) | 2014-10-08 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201420181899.7U Expired - Fee Related CN203869485U (en) | 2014-04-15 | 2014-04-15 | Repairing device of refractory materials of pelletizing rotary kiln |
Country Status (1)
| Country | Link |
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| CN (1) | CN203869485U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253796A (en) * | 2018-01-31 | 2018-07-06 | 四川有色金砂选矿药剂有限公司 | For the method for repairing and mending of dry kiln refractory material layer |
-
2014
- 2014-04-15 CN CN201420181899.7U patent/CN203869485U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108253796A (en) * | 2018-01-31 | 2018-07-06 | 四川有色金砂选矿药剂有限公司 | For the method for repairing and mending of dry kiln refractory material layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20141008 Termination date: 20170415 |