CN106766926A - The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln liner - Google Patents
The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln liner Download PDFInfo
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- CN106766926A CN106766926A CN201611119990.6A CN201611119990A CN106766926A CN 106766926 A CN106766926 A CN 106766926A CN 201611119990 A CN201611119990 A CN 201611119990A CN 106766926 A CN106766926 A CN 106766926A
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- rotary kiln
- spray gun
- resistance
- gun
- pressure piping
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Classifications
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- 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
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- General Engineering & Computer Science (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The invention discloses the semidry method hot gunning prosthetic device and method of a kind of resistance to material of rotary kiln liner, belong to a kind of resistance to material recovery technique of rotary kiln liner, prosthetic device includes gun, gun is connected by compressed air hose with high-pressure air source, gun is also connected by the first pressure piping with spray gun, spray gun is also connected by the second pressure piping with water tank, self priming pump is also equipped between water tank and the second pressure piping, for gunning refractory to be exported by the first pressure piping from gun by pressure-air, the silicon sol solution in water tank is exported by the second pressure piping by self priming pump again, sprayed after mixing in spray gun.The mixed solution and the mixture of high alumina mullite gunning refractory of spray gun Ludox and water are sprayed to the inwall of rotary kiln by spray gun, filling penetrating crack, thicken the thickness of resistance to material, repair the castable of local shedding, using hot repair technology, stop the time of kiln cooling when avoiding cold repair, repair time is short, and the production of subsequent handling is not influenceed.
Description
Technical field
The present invention relates to a kind of resistance to material recovery technique of rotary kiln liner, in particular, returned the invention mainly relates to one kind
The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln kiln lining.
Background technology
Rotary kiln is the important step in RKEF technique productions ferronickel operations, and its Main Function is raising temperature of charge, takes off
Water and prereduction.The resistance to material of kiln lining of rotary kiln is 10mm aluminosilicate property fiber thermal insulation felt+230mm High-Alumina pouring materials.Rotary kiln
Service life be primarily limited to the service condition of the resistance to material of its kiln lining, due to long-term applied at elevated temperature and stop what is produced when kiln is overhauled
The extremely cold very hot influence to the thermal shock resistance of resistance to material, the resistance to material appearance of kiln lining of rotary kiln is serious thinning, and original aluminosilicate property
The whole efflorescence of fiber thermal insulation felt, cause original castable to produce penetrating crack and local shedding.Above mentioned problem will cause：
1st, Kiln Shell Temperature is too high, causes barrel distortion, vibration, and serious equipment safety hidden danger is caused to rotary kiln.2nd, reduce
The production efficiency of rotary kiln, increases thermal loss.3rd, to reduce Kiln Shell Temperature, kiln temperature is reduced, is caused back
Rotary kiln coal dust firing is insufficient, and dedusting tail ash discharge reaches 7 ~ 10% containing C content, causes coal dust to waste, more seriously to upper operation
The production of electric precipitation brings great potential safety hazard.4th, because reducing kiln temperature, temperature of charge reduction will increase lower operation ore deposit heat
The energy consumption of stove production.
The resistance to material of rotary kiln liner is solved the problems, such as both at home and abroad at present, it is general using the resistance to material removal for stopping be damaged after kiln cooling,
Again beating castable carries out cold repair, spontaneously dries afterwards, is slowly heated up according still further to castable heating curve, gradually recovers normal
Production, it is time-consuming more long, have a strong impact on lower operation production.Large area penetrating crack, thinning is produced for the resistance to material of rotary kiln liner,
General both at home and abroad to be carried out large repairs using by rotary kiln is offline, then whole production line faces stopping production；Thus it is necessary for rotary kiln
The fast repair technique of the resistance to material of kiln lining is studied and improved.
The content of the invention
An object of the present invention is for above-mentioned deficiency, there is provided a kind of semidry method hot gunning of the resistance to material of rotary kiln liner
Prosthetic device and method, to expect that solving the resistance to material reparation of rotary kiln liner in the prior art takes more long, the next operation life of influence
Produce, or even whole production line is faced the technical problems such as stopping production.
To solve above-mentioned technical problem, the present invention uses following technical scheme：
One aspect of the present invention provides a kind of semidry method hot gunning prosthetic device of the resistance to material of rotary kiln liner, described prosthetic device
Including gun, the gun is connected by compressed air hose with high-pressure air source, and the gun also passes through the first high pressure
Pipeline is connected with spray gun, and the spray gun is also connected by the second pressure piping with water tank, the water tank and the second high-voltage tube
Self priming pump is also equipped between road, for gunning refractory to be exported by the first pressure piping from gun by pressure-air, then by
Self priming pump is exported the silicon sol solution in water tank by the second pressure piping, is sprayed after mixing in spray gun.
Preferably, further technical scheme is：The spray gun is movably arranged on support, for making spray gun front end
Jet is placed in the inner chamber of rotary kiln, and the position by the jet of support real-time adjustment spray gun front end in rotary kiln inner chamber
Put.
Another aspect of the present invention provides a kind of semidry method hot gunning restorative procedure of the resistance to material of rotary kiln liner, and its feature exists
In the prosthetic device described in described method usage right requirement 1 or 2, comprise the following steps：
Step A, high alumina mullite gunning refractory is placed in gun, then the mixed solution of Ludox and water is placed in water tank
It is interior；
Step B, adjustment gun carry out blanking according to 0.3-0.7t/h, then by pressure-air by high alumina mullite gunning refractory
Exported to spray gun by the first pressure piping；
Step C, adjustment self priming pump export to spray gun, output to spray the mixed solution of Ludox and water by the second pressure piping
Rifle Ludox is 7~9 with the mass ratio of high alumina mullite gunning refractory with the mixed solution of water:0.5~1.5；
Step D, spray gun is movably arranged on support, during spray gun front end stretched into the inner chamber of rotary kiln, then is adjusted by support
Position of the spray gun front end in rotary kiln inner chamber, fixed point spray repair is carried out to the resistance to material of rotary kiln liner.
Further technical scheme is：Ludox and the mixing quality ratio of water are 3 in the step A:1.
Further technical scheme is：The pressure of the step B mesohigh air is 0.4Mpa.
Further technical scheme is：In the step C self priming pump by the mixed solution of Ludox and water according to 0.03
~0.08t/h is exported to spray gun by the second pressure piping.
Further technical scheme is：The mixed solution and high alumina to spray gun Ludox and water are exported in the step C
The mass ratio of mullite gunning refractory is 8:1.
Compared with prior art, one of beneficial effects of the present invention are：Spray gun is sprayed to the inwall of rotary kiln by spray gun
Ludox and the mixed solution and the mixture of high alumina mullite gunning refractory of water, one layer one is carried out equivalent to the resistance to material of kiln lining
Layer repairing, fills penetrating crack, thickens the thickness of resistance to material, the castable of local shedding is repaired, using hot repair technology, it is to avoid
Stop the time of kiln cooling during cold repair, repair time is short, and the production of subsequent handling is not influenceed, can more avoid whole production line from stopping production
Situation occur；And the method for injection hot repair can periodically be entered in the case where production is not influenceed to rotary kiln at any time
Row maintenance and repairing, make the resistance to material of rotary kiln liner be always held at rational thickness, so as to extend rotary kiln service life；Also keep away
Exempted from potential safety hazard during cold repair, at the same a kind of semidry method hot gunning prosthetic device of the resistance to material of rotary kiln liner of the invention and
Method is simple to operate, and suitably the rotary kiln to all kinds of specifications is repaired, and range of application is wide.
Brief description of the drawings
Fig. 1 is the apparatus structure schematic diagram for illustrating one embodiment of the invention；
In figure, 1 it is gun, 2 is compressed air hose, 3 is the first pressure piping, 4 is spray gun, 41 is jet, 5 is second high
Pressure pipeline, 6 be self priming pump, 7 be support, 8 be rotary kiln, 9 be water tank.
Specific embodiment
The present invention is further elaborated below in conjunction with the accompanying drawings.
With reference to shown in Fig. 1, one embodiment of the present of invention is a kind of semidry method hot gunning reparation of the resistance to material of rotary kiln liner
Device, needs to include gun 1, foregoing gun 1 passes through compressed air hose 2 and high-pressure air source in the prosthetic device（Do not show in figure
Go out）It is connected, additionally, the gun 1 also needs to be connected with spray gun 4 by the first pressure piping 3, the spray gun 4 is also needed by
Two pressure pipings 5 are connected with water tank 9；As shown, peace is also needed between the pressure piping 5 of foregoing water tank 9 and second
Dress self priming pump 6；In aforementioned means structure, can be defeated by the first pressure piping 3 by gunning refractory from gun 1 by pressure-air
Go out, then the silicon sol solution in water tank 9 is exported by the second pressure piping 5 by self priming pump 6, sprayed after mixing in spray gun 4；For
It is easy to move spray gun, the first foregoing pressure piping 3 and the second pressure piping 5 can be using the flexible pipes of the material of plastic cement.
Referring still to shown in Fig. 1, for ease of adjusting the spray angle of spray gun 4 in the inner chamber of rotary kiln, can be in above-mentioned dress
A support 7 is set up in putting, the support should be arranged on the kiln head cover end of rotary kiln 8, spray gun 4 then is movably arranged on into the branch
On frame 7, and then may be such that the jet 41 of the front end of spray gun 4 is placed in the inner chamber of rotary kiln 8, and sprayed by the real-time adjustment of support 7
Position of the jet 41 of the front end of rifle 4 in the inner chamber of rotary kiln 8.
Based on a kind of semidry method hot gunning prosthetic device of the resistance to material of rotary kiln liner disclosed in above-described embodiment, the present invention
Another embodiment be use above-mentioned prosthetic device method, i.e., the semidry method hot gunning reparation side of a kind of resistance to material of rotary kiln liner
Method, the method includes and preferably operates in accordance with the following steps：
Step 1, the high alumina mullite gunning refractory that finishes will be prepared it will be placed in gun 1；Then by the mixing of Ludox and water
Solution is placed in water tank 9, and the mass ratio that Ludox mixes with water is preferably 3:1；Carry out the preparation of reparation；
Step 2, before starting to repair, adjustment gun 1 carries out blanking according to 0.3-0.7t/h, then by pressure-air by high alumina
Mullite gunning refractory is exported to spray gun 4 by the first pressure piping 3；Inventor during experiment, foregoing blanking it is excellent
Choosing value is 0.5t/h, and the pressure value of pressure-air is preferably 0.4Mpa, while the pressure value can also be according to the big of rotary kiln specification
The small adjustment for carrying out adaptability；
Step 3, corresponding, adjustment self priming pump 6 exports to spray gun the mixed solution of Ludox and water by the second pressure piping 5
4, output to the Ludox of spray gun 4 and the mixed solution of water and the mass ratio of high alumina mullite gunning refractory are 7~9:0.5~1.5；
This step has no clearly order and limits with above-mentioned steps 2；And foregoing self priming pump 6 by the mixed solution of Ludox and water according to
0.03~0.08t/h is exported to spray gun 4 by the second pressure piping 5；Two kinds of preferred mass ratios of material are 8:1, i.e. Ludox with
The preferred value of the mixed solution output of water is 0.0625t/h；
Step 4, spray gun 4 is movably arranged on support 7, during the front end of spray gun 4 stretched into the inner chamber of rotary kiln, then by support 7
Position of the adjustment front end of spray gun 4 in rotary kiln inner chamber, fixed point spray repair is carried out to the resistance to material of rotary kiln liner.
In the above-described embodiments, described device and method can repair the rotary kiln liner penetrating crack of resistance to material, thinning, office
A series of problems, such as portion comes off.It mainly by being adapted to repair the high alumina mullite gunning refractory of the resistance to material of rotary kiln liner, is used
Hot gunning technology, is in layer repaired equivalent to the resistance to material of kiln lining, fills penetrating crack, thickens the thickness of resistance to material, is repaired
The castable of local shedding.And due to using hot repair technology, it is to avoid stop during cold repair the time of kiln cooling, therefore repair
Time is short, does not influence front and rear operation normally to produce.
Additionally, restorative procedure of the invention is not damaged the resistance to material of other positions kiln lining.It is main reason is that cold repair
When, it is necessary to cool down the resistance to material temperature of rotary kiln, after cold repair, then temperature raising is carried out to rotary kiln, in this process, other positions kiln lining
Resistance to material is also easy to produce crackle due to rapid heat cycle, so as to damage resistance to material.And the present invention is by adjusting Burners Positions when heat stops kiln
Carry out fixed point and repair the resistance to material for damaging, and in the absence of rapid heat cycle, therefore the resistance to material of other positions kiln lining is not influenceed.
More rotary kiln can periodically be safeguarded and repaired in the case where production is not influenceed at any time, made back
The resistance to material of rotary kiln kiln lining is always held at rational thickness, so as to effectively extend rotary kiln service life.
Additionally, potential safety hazard when can also avoid cold repair.Operating personnel is needed during because of rotary kiln cold repair into entering in kiln
Row repairs the resistance to material of kiln lining, there is that the resistance to material of kiln lining falls and kliner coating such as falls at the potential safety hazard.And the technology of the present invention is outside rotary kiln
Spray repair is pinpointed by spray gun, has prevented potential safety hazard.
Reduce barrel temperature, it is to avoid the equipment safety hidden danger that barrel distortion, vibration etc. bring to rotary kiln.Because of cold repair
Benefit technology only in the case where barrel temperature is very high, is just repaired, then equipment can be then brought when barrel temperature is higher
Potential safety hazard.The present invention has prevented the rising of barrel temperature substantially due to that whenever can carry out hot repair to rotary kiln, from
And avoid equipment safety hidden danger.And due to reducing Kiln Shell Temperature, can be by rotary kiln coal fully then, while subtracting
Lack thermal loss, reduce coal consumption.Simultaneously because coal fully burns, dedusting tail ash discharge C content is reduced to 1 ~ 2%, eliminate electricity
The potential safety hazard of dedusting.
Than that described above, in addition it is also necessary to which explanation is " one embodiment ", " another implementation spoken of in this manual
Example ", " embodiment " etc., specific features, structure or the feature for referring to being described with reference to the embodiment are included in the application summary
Property description at least one embodiment in.It is not necessarily to refer to same reality that statement of the same race occur in multiple places in the description
Apply example.Furthermore, it is understood that when describing specific features, structure or a feature with reference to any embodiment, what is advocated is knot
Other embodiment is closed also to fall within the scope of the present invention realizing this feature, structure or feature.
Although reference be made herein to invention has been described for multiple explanatory embodiments of the invention, however, it is to be understood that
Those skilled in the art can be designed that a lot of other modification and implementation methods, and these modifications and implementation method will fall in this Shen
Please be within disclosed spirit and spirit.More specifically, in the range of disclosure, drawings and claims, can
Various variations and modifications are carried out with the building block to theme composite configuration and/or layout.Except to building block and/or layout
Outside the variations and modifications for carrying out, to those skilled in the art, other purposes also will be apparent.
Claims (7)
1. the semidry method hot gunning prosthetic device of the resistance to material of a kind of rotary kiln liner, it is characterised in that：Described prosthetic device includes
Gun（1）, the gun（1）By compressed air hose（2）It is connected with high-pressure air source, the gun（1）Also pass through
First pressure piping（3）With spray gun（4）It is connected, the spray gun（4）Also pass through the second pressure piping（5）With water tank（9）It is connected
It is logical, the water tank（9）With the second pressure piping（5）Between be also equipped with self priming pump（6）, for by pressure-air from gun
（1）It is middle by gunning refractory by the first pressure piping（3）Output, then by self priming pump（6）By water tank（9）In silicon sol solution by second
Pressure piping（5）Output, in spray gun（4）Sprayed after middle mixing.
2. the semidry method hot gunning prosthetic device of the resistance to material of rotary kiln liner according to claim 1, it is characterised in that：It is described
Spray gun（4）It is movably arranged on support（7）On, for making spray gun（4）The jet of front end（41）It is placed in rotary kiln（8）Inner chamber
In, and by support（7）Real-time adjustment spray gun（4）The jet of front end（41）In rotary kiln（8）Position in inner chamber.
3. the semidry method hot gunning restorative procedure of the resistance to material of a kind of rotary kiln liner, it is characterised in that described method usage right will
The prosthetic device described in 1 or 2 is sought, is comprised the following steps：
Step A, high alumina mullite gunning refractory is placed in gun（1）It is interior, then the mixed solution of Ludox and water is placed in water
Case（9）It is interior；
Step B, adjustment gun（1）Blanking is carried out according to 0.3-0.7t/h, then is sprayed high alumina mullite by pressure-air
Feed supplement passes through the first pressure piping（3）Export to spray gun（4）；
Step C, adjustment self priming pump（6）The mixed solution of Ludox and water is passed through into the second pressure piping（5）Export to spray gun
（4）, output to spray gun（4）Ludox is 7~9 with the mass ratio of high alumina mullite gunning refractory with the mixed solution of water:0.5~
1.5；
Step D, by spray gun（4）It is movably arranged on support（7）On, by spray gun（4）Front end is stretched into the inner chamber of rotary kiln, then passes through
Support（7）Adjustment spray gun（4）Position of the front end in rotary kiln inner chamber, fixed point spray repair is carried out to the resistance to material of rotary kiln liner.
4. the semidry method hot gunning restorative procedure of the resistance to material of rotary kiln liner according to claim 3, it is characterised in that：It is described
Ludox and the mixing quality ratio of water are 3 in step A:1.
5. the semidry method hot gunning restorative procedure of the resistance to material of rotary kiln liner according to claim 3, it is characterised in that：It is described
The pressure of step B mesohigh air is 0.4Mpa.
6. the semidry method hot gunning restorative procedure of the resistance to material of rotary kiln liner according to claim 3 or 4, it is characterised in that：
Self priming pump in the step C（6）By the mixed solution of Ludox and water according to 0.03~0.08t/h by the second pressure piping（5）
Export to spray gun（4）.
7. the semidry method hot gunning restorative procedure of the resistance to material of rotary kiln liner according to claim 6, it is characterised in that：It is described
Exported in step C to spray gun（4）Ludox is 8 with the mass ratio of high alumina mullite gunning refractory with the mixed solution of water:1.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119990.6A CN106766926B (en) | 2016-12-08 | 2016-12-08 | The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln liner |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201611119990.6A CN106766926B (en) | 2016-12-08 | 2016-12-08 | The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln liner |
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| Publication Number | Publication Date |
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| CN106766926A true CN106766926A (en) | 2017-05-31 |
| CN106766926B CN106766926B (en) | 2019-03-19 |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108204743A (en) * | 2017-12-28 | 2018-06-26 | 攀枝花钢城集团有限公司 | A kind of method for repairing and mending of rotary kiln refractory material layer |
| 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 |
| CN109186270A (en) * | 2018-10-08 | 2019-01-11 | 云南华鼎再生资源开发有限公司 | A kind of moveable rotary kiln head-shield |
| CN109530670A (en) * | 2017-09-21 | 2019-03-29 | 中冶宝钢技术服务有限公司 | A kind of spraying process of tundish |
| CN114455958A (en) * | 2022-02-21 | 2022-05-10 | 山东金泰高温材料有限公司 | Heating furnace refractory material rapid repairing material, method and system |
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| CN109186270A (en) * | 2018-10-08 | 2019-01-11 | 云南华鼎再生资源开发有限公司 | A kind of moveable rotary kiln head-shield |
| CN109186270B (en) * | 2018-10-08 | 2024-04-05 | 云南华鼎再生资源开发有限公司 | Mobilizable rotary kiln hood |
| CN114455958A (en) * | 2022-02-21 | 2022-05-10 | 山东金泰高温材料有限公司 | Heating furnace refractory material rapid repairing material, method and system |
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|---|---|
| CN106766926B (en) | 2019-03-19 |
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