CN102200390A - Repairing technology of heating furnace for metallurgy - Google Patents
Repairing technology of heating furnace for metallurgy Download PDFInfo
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- CN102200390A CN102200390A CN2011101722247A CN201110172224A CN102200390A CN 102200390 A CN102200390 A CN 102200390A CN 2011101722247 A CN2011101722247 A CN 2011101722247A CN 201110172224 A CN201110172224 A CN 201110172224A CN 102200390 A CN102200390 A CN 102200390A
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Abstract
The invention discloses a repairing technology of a heating furnace for metallurgy. Through material mixing, feeding and material spraying technology process sequentially, a gunning material is uniformly sprayed and covered on a damaged surface of the heating furnace; a combining agent and an admixture agent are added, thus the repairing technology can be carried out under the condition that the furnace body has a higher temperature, moreover, the condensing speed rate is faster, the combining between the spraying material and the damaged surface is fastened and sufficient, and the repairing effect is better; a spray gun is adopted for spraying and coating operation, the required operation space in the repairing process is reduced, thus the thinner part of the damaged surface on the heating surface can be repaired by the operation personnel, also the spray gun is convenient and feasible to operate, and the repairing efficiency is improved; and the gunning material after mixing with water is sprayed and coated on the damaged surface, under the effect of a high-temperature furnace body, the moisture is evaporated, thus the condensing speed rate of the gunning material is faster, the repairing efficiency is higher, also the combing between the gunning material and the damaged surface is more sufficient and tight, thus the repairing efficiency is improved correspondingly.
Description
Technical field
The present invention relates to metallurgical machinery equipment maintenance technique field, particularly a kind of metallurgy heating furnace repair technology.
Background technology
In field of metallurgical machine, heating furnace is a kind of widely used metallurgical processing equipment.
In the prior art, though the refractory material of novel high-quality has been widely used in the manufactured materials of each associated components of heating furnace, because production intensity is bigger, in actual use, the wearing and tearing of heating furnace are still very serious, make troubles for normal production and processing.
Generally speaking, when damaging appears in the local location of heating furnace, operating personnel are earlier with the heating furnace blowing out, treat that stove body temperature drops in the normal temperature scope (being generally below 100 ℃) after, corresponding damaged location is taked the formwork cast or the method for manually smearing is repaired by operating personnel.Though this kind method for repairing and mending can be finished the patch work to heating furnace substantially, but because above-mentioned two kinds of methods are in implementation process, the temperature of body of heater and each associated components need be reduced in the normal temperature scope and just can carry out repair operation, this just need carry out long blowing out to heating furnace, so that its temperature drops in the suitable scope, this has just caused adverse effect to the continuous production operation of heating furnace; Owing to take the normal temperature operating type, and mending course complex operation, repairing efficiency is low, required furnace outage time and repairing time are longer, and after body of heater cooling and repairing are finished, again put into production and need heat once more, so the working environment of rapid heat cycle can have a negative impact to the normal use of heating furnace body and associated component thereof, even reduces the service life of heating furnace.
Therefore, how to improve metallurgical repairing efficiency, and make its repair efficiency be more preferably the important technological problems that those skilled in the art need solve at present with heating furnace.
Summary of the invention
For solving the problems of the technologies described above, the invention provides a kind of metallurgy heating furnace repair technology, its repairing efficiency is higher, utilizes the gap of production maintenance can finish repairing, need not blowing out in the mending course.
For solving the problems of the technologies described above, the invention provides a kind of metallurgy heating furnace repair technology, comprise step:
Batch mixing adds bond and additive in base-material, and above-mentioned each material is fully mixed in gun, repairs required gunning refractory to make;
Feeding is delivered to spray gun with the logical charge tube of the gunning refractory in the gun, and simultaneously, the water of being exported by water pump is delivered to described spray gun by water pipe, and further mixes in described spray gun with above-mentioned gunning refractory;
Material spray evenly is sprayed into mixed gunning refractory on the damaged face of described heating furnace by described spray gun.
Preferably, the required operating temperature of described step material spray is 300～1100 degrees centigrade.
Preferably, described additive specifically comprises one or more in the materials such as sodium phosphate trimer, Sodium Polyacrylate, explosion-proof fiber, aluminium powder, silica micropowders.
Preferably, described bond is specially pure calcium aluminate cement.
Preferably, specifically comprise in the materials such as bauxite chamotte, aluminum-spinel, kyanite, magnesia one or more in the described base-material.
Preferably, also comprise step between described step batch mixing and the described step feeding:
Pressurize, the industrial compressed air of exporting by air compressor machine or miscellaneous equipment is pressed into the gas in the air accumulator in the gun, utilizes than hyperbar gunning refractory is sprayed by outwards carrying in the gun.
Relative above-mentioned background technology, metallurgy heating furnace repair technology provided by the present invention by batch mixing, feeding and the material spray processing step that carries out successively, evenly sprays covering to the damaged face of described heating furnace with gunning refractory.Owing in gunning refractory, added the additive that promotes the bond that gunning refractory combines with damaged face and can quicken that gunning refractory condenses and under hot environment, still can efficiently condense, guarantee that gunning refractory still has adhesion property preferably in higher temperature range, make this repair technology under body of heater also has the situation of higher temperature, normally to carry out, and rate of setting is very fast, combining after repairing is finished between gunning refractory and damaged face is firmly abundant, and repair efficiency is better.Simultaneously, adopt the spray gun of adjustable length and spray angle to carry out spraying operation, reduced operating space required in the mending course, operating personnel can be repaired the damaged face at narrower and small position on the described heating furnace, and described spray gun is easy to operation, has improved described metallurgical repairing efficiency with the heating furnace repair technology.In addition, be sprayed on the damaged face with the mixed gunning refractory of water after, under the effect of high-temperature furnace body, water evaporates, thus make that the rate of setting of gunning refractory is faster, and repairing efficiency is higher, and combining more fully closely between gunning refractory and damaged face makes repair efficiency be able to corresponding raising.
In another preferred version of the present invention, the required operating temperature of described step material spray is 300～1100 degrees centigrade.Generally speaking, the furnace body temperature of heating furnace described in the course of work promptly is in above-mentioned 300～1100 degrees centigrade scope, therefore, described metallurgy need not special blowing out with the heating furnace repair technology can be in the off time of the conventional maintenance of heating furnace, under hot environment, finish patch work to the damaged face of the body of heater of described heating furnace, make its repairing efficiency higher, and the heating furnace short phenomenon of having avoided causing because of the body of heater rapid heat cycle in service life.
Description of drawings
The metallurgy that Fig. 1 provides for the embodiment of the invention one flow chart of heating furnace repair technology;
The metallurgy that Fig. 2 provides for the embodiment of the invention two flow chart of heating furnace repair technology;
Fig. 3 is provided for the metallurgy that is provided in the embodiment of the invention by the repair procedure schematic diagram of heating furnace repair technology.
The specific embodiment
Core of the present invention provides a kind of metallurgy heating furnace repair technology, and its remediation efficiency is higher, and repair efficiency is better.
In order to make those skilled in the art person understand the present invention program better, the present invention is described in further detail below in conjunction with the drawings and specific embodiments.
Please refer to Fig. 1 and Fig. 3, the metallurgy that Fig. 1 provides for the embodiment of the invention one flow chart of heating furnace repair technology; Fig. 3 is provided for the metallurgy that is provided in the embodiment of the invention by the repair procedure schematic diagram of heating furnace repair technology.
The metallurgy that the embodiment of the invention one provides heating furnace repair technology comprises:
Step 101: batch mixing;
In base-material, add bond and additive, and above-mentioned each material is fully mixed in gun, repair required gunning refractory to make.Owing in gunning refractory, added the additive that promotes the bond that gunning refractory combines with damaged face and can quicken that gunning refractory condenses and under hot environment, still can efficiently condense, make this repair technology under body of heater also has the situation of higher temperature, normally to carry out, and rate of setting is very fast, combining after repairing is finished between gunning refractory and damaged face is firmly abundant, and repair efficiency is better.
Step 102: feeding;
The logical charge tube of gunning refractory in the gun is delivered to spray gun, and simultaneously, the water of being exported by water pump is delivered to described spray gun by water pipe, and further mixes in described spray gun with above-mentioned gunning refractory.After will being sprayed on the damaged face with the mixed gunning refractory of water, under the effect of high-temperature furnace body, water evaporates, thereby make that the rate of setting of gunning refractory is faster, repairing efficiency is higher, and combining more fully closely between gunning refractory and damaged face, makes repair efficiency be able to corresponding raising.
Step 103: material spray;
Mixed gunning refractory evenly is sprayed on the damaged face of described heating furnace by described spray gun.Adopt spray gun to carry out spraying operation, reduced operating space required in the mending course, operating personnel can be repaired the damaged face at narrower and small position on the described heating furnace, and described spray gun is easy to operation, has improved described metallurgical repairing efficiency with the heating furnace repair technology.
Further, the required operating temperature of above-mentioned material spray process is 300～1100 degrees centigrade.Generally speaking, the furnace body temperature of heating furnace described in the course of work promptly is in above-mentioned 300～1100 degrees centigrade scope, therefore, described metallurgy need not special blowing out with the heating furnace repair technology can be in the off time of the conventional maintenance of heating furnace, under hot environment, finish patch work to the damaged face of the body of heater of described heating furnace, make its repairing efficiency higher, and the heating furnace short phenomenon of having avoided causing because of the body of heater rapid heat cycle in service life.
Particularly, above-mentioned additive specifically comprises one or more in the materials such as sodium phosphate trimer, Sodium Polyacrylate, explosion-proof fiber, aluminium powder, silica micropowders.Adopt above-mentioned all kinds of material can accelerate to spray the rate of setting of the gunning refractory after finishing, make that described metallurgical whole repairing efficiency with the heating furnace repair technology is higher as additive.
Certainly, above-mentioned additive comprises that specifically in the materials such as sodium phosphate trimer, Sodium Polyacrylate, explosion-proof fiber, aluminium powder, silica micropowders one or more are only for preferred version, this additive is not limited to the described material of the foregoing description, all can so long as can satisfy described metallurgical use needs with the heating furnace repair technology.
On the other hand, above-mentioned bond is specially pure hydrochloric acid calcium cement.Compare ordinary cement, the excellent bonding performance of this kind pure hydrochloric acid calcium cement, can make between gunning refractory and damaged face combine more closely solid.
Should be clear and definite, above-mentioned bond is specially pure hydrochloric acid calcium cement and only is preferred version, and described bond is not limited to the pure hydrochloric acid calcium cement described in the foregoing description, all can so long as can satisfy described metallurgical use needs with the heating furnace repair technology.
In addition, specifically comprise in the materials such as bauxite chamotte, aluminum-spinel, kyanite, magnesia one or more in the above-mentioned base-material in the base-material.
Please refer to Fig. 2 and Fig. 3, the metallurgy that Fig. 2 provides for the embodiment of the invention two flow chart of heating furnace repair technology; Fig. 3 is provided for the metallurgy that is provided in the embodiment of the invention by the repair procedure schematic diagram of heating furnace repair technology.
The metallurgy that the embodiment of the invention two provides heating furnace repair technology comprises:
Step 201: batch mixing;
In base-material, add bond and additive, and above-mentioned each material is fully mixed in gun, repair required gunning refractory to make.Owing in gunning refractory, added the additive that promotes the bond that gunning refractory combines with damaged face and can quicken that gunning refractory condenses and under hot environment, still can efficiently condense, make this repair technology under body of heater also has the situation of higher temperature, normally to carry out, and rate of setting is very fast, combining after repairing is finished between gunning refractory and damaged face is firmly abundant, and repair efficiency is better.
Step 202: pressurization;
Industrial compressed air by air compressor machine or miscellaneous equipment output is pressed into the gas in the air accumulator in the gun, utilizes than hyperbar gunning refractory is sprayed by outwards carrying in the gun.Adopt the mode of this kind high pressure spray repair can make between gunning refractory and damaged face combine more solid fully, thereby make described metallurgical repair efficiency better with the heating furnace repair technology.
Step 203: feeding;
The logical charge tube of gunning refractory in the gun is delivered to spray gun, and simultaneously, the water of being exported by water pump is delivered to described spray gun by water pipe, and further mixes in described spray gun with above-mentioned gunning refractory.After will being sprayed on the damaged face with the mixed gunning refractory of water, under the effect of high-temperature furnace body, water evaporates, thereby make that the rate of setting of gunning refractory is faster, repairing efficiency is higher, and combining more fully closely between gunning refractory and damaged face, makes repair efficiency be able to corresponding raising.
Step 204: material spray;
Mixed gunning refractory evenly is sprayed on the damaged face of described heating furnace by described spray gun.Adopt spray gun to carry out spraying operation, reduced operating space required in the mending course, operating personnel can be repaired the damaged face at narrower and small position on the described heating furnace, and described spray gun is easy to operation, has improved described metallurgical repairing efficiency with the heating furnace repair technology.
Further, the required operating temperature of above-mentioned material spray process is 300～1100 degrees centigrade.Generally speaking, the furnace body temperature of heating furnace described in the course of work promptly is in above-mentioned 300～1100 degrees centigrade scope, therefore, described metallurgy need not special blowing out with the heating furnace repair technology can be in the off time of the conventional maintenance of heating furnace, under hot environment, finish patch work to the damaged face of the body of heater of described heating furnace, make its repairing efficiency higher, and the heating furnace short phenomenon of having avoided causing because of the body of heater rapid heat cycle in service life.
Particularly, above-mentioned additive specifically comprises one or more in the materials such as sodium phosphate trimer, Sodium Polyacrylate, explosion-proof fiber, aluminium powder, silica micropowders.Adopt above-mentioned all kinds of material can accelerate to spray the rate of setting of the gunning refractory after finishing, make that described metallurgical whole repairing efficiency with the heating furnace repair technology is higher as additive.
Certainly, above-mentioned additive comprises that specifically in the materials such as sodium phosphate trimer, Sodium Polyacrylate, explosion-proof fiber, aluminium powder, silica micropowders one or more are only for preferred version, this additive is not limited to the described material of the foregoing description, all can so long as can satisfy described metallurgical use needs with the heating furnace repair technology.
On the other hand, above-mentioned bond is specially pure hydrochloric acid calcium cement.Compare ordinary cement, the excellent bonding performance of this kind pure hydrochloric acid calcium cement, can make between gunning refractory and damaged face combine more closely solid.
Should be clear and definite, above-mentioned bond is specially pure hydrochloric acid calcium cement and only is preferred version, and described bond is not limited to the pure hydrochloric acid calcium cement described in the foregoing description, all can so long as can satisfy described metallurgical use needs with the heating furnace repair technology.
In addition, specifically comprise in the materials such as bauxite chamotte, aluminum-spinel, kyanite, magnesia one or more in the above-mentioned base-material in the base-material.
In summary, the metallurgy that provides among the present invention heating furnace repair technology by batch mixing, feeding and the material spray processing step that carries out successively, evenly sprays covering to the damaged face of described heating furnace with gunning refractory.Owing in gunning refractory, added the additive that promotes the bond that gunning refractory combines with damaged face and can quicken that gunning refractory condenses and under hot environment, still can efficiently condense, guarantee that gunning refractory still has adhesion property preferably in higher temperature range, make this repair technology under body of heater also has the situation of higher temperature, normally to carry out, and rate of setting is very fast, combining after repairing is finished between gunning refractory and damaged face is firmly abundant, and repair efficiency is better.Simultaneously, adopt the spray gun of adjustable length and spray angle to carry out spraying operation, reduced operating space required in the mending course, operating personnel can be repaired the damaged face at narrower and small position on the described heating furnace, and described spray gun is easy to operation, has improved described metallurgical repairing efficiency with the heating furnace repair technology.In addition, be sprayed on the damaged face with the mixed gunning refractory of water after, under the effect of high-temperature furnace body, water evaporates, thus make that the rate of setting of gunning refractory is faster, and repairing efficiency is higher, and combining more fully closely between gunning refractory and damaged face makes repair efficiency be able to corresponding raising.
Each embodiment adopts the mode of going forward one by one to describe in this specification, and what each embodiment stressed all is and the difference of other embodiment that identical similar part is mutually referring to getting final product between each embodiment.
More than metallurgy provided by the present invention is described in detail with the heating furnace repair technology.Used specific case herein principle of the present invention and embodiment are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof.Should be pointed out that for those skilled in the art, under the prerequisite that does not break away from the principle of the invention, can also carry out some improvement and modification to the present invention, these improvement and modification also fall in the protection domain of claim of the present invention.
Claims (6)
1. a metallurgy is used the heating furnace repair technology, it is characterized in that, comprises step:
Batch mixing adds bond and additive in base-material, and above-mentioned each material is fully mixed in gun, repairs required gunning refractory to make;
Feeding is delivered to spray gun with the logical charge tube of the gunning refractory in the gun, and simultaneously, the water of being exported by water pump is delivered to described spray gun by water pipe, and further mixes in described spray gun with above-mentioned gunning refractory;
Material spray evenly is sprayed into mixed gunning refractory on the damaged face of described heating furnace by described spray gun.
2. metallurgy heating furnace repair technology as claimed in claim 1 is characterized in that: the required operating temperature of described step material spray is 300～1100 degrees centigrade.
3. metallurgy heating furnace repair technology as claimed in claim 2 is characterized in that: described additive specifically comprises one or more in the materials such as sodium phosphate trimer, Sodium Polyacrylate, explosion-proof fiber, aluminium powder, silica micropowders.
4. metallurgy heating furnace repair technology as claimed in claim 2, it is characterized in that: described bond is specially pure calcium aluminate cement.
5. metallurgy heating furnace repair technology as claimed in claim 2 is characterized in that: specifically comprise in the materials such as bauxite chamotte, aluminum-spinel, kyanite, magnesia one or more in the described base-material.
6. as each described metallurgy heating furnace repair technology of claim 1 to 5, it is characterized in that: also comprise step between described step batch mixing and the described step feeding:
Pressurize, the industrial compressed air of exporting by air compressor machine or miscellaneous equipment is pressed into the gas in the air accumulator in the gun, utilizes than hyperbar gunning refractory is sprayed by outwards carrying in the gun.
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| CN2011101722247A CN102200390A (en) | 2011-06-24 | 2011-06-24 | Repairing technology of heating furnace for metallurgy |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106766926A (en) * | 2016-12-08 | 2017-05-31 | 广东广青金属科技有限公司 | The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln liner |
| CN112325653A (en) * | 2020-09-28 | 2021-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Repairing method of metal mixer lining |
| CN115585664A (en) * | 2022-11-16 | 2023-01-10 | 北京联合荣大工程材料股份有限公司 | Method for repairing bottom of annular heating furnace |
| CN115947589A (en) * | 2022-07-27 | 2023-04-11 | 江西联达冶金有限公司 | Converter lining gunning mix with strong adhesive force |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106766926A (en) * | 2016-12-08 | 2017-05-31 | 广东广青金属科技有限公司 | The semidry method hot gunning prosthetic device and method of the resistance to material of rotary kiln liner |
| CN112325653A (en) * | 2020-09-28 | 2021-02-05 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Repairing method of metal mixer lining |
| CN112325653B (en) * | 2020-09-28 | 2022-09-20 | 甘肃酒钢集团宏兴钢铁股份有限公司 | Repairing method of metal mixer lining |
| CN115947589A (en) * | 2022-07-27 | 2023-04-11 | 江西联达冶金有限公司 | Converter lining gunning mix with strong adhesive force |
| CN115585664A (en) * | 2022-11-16 | 2023-01-10 | 北京联合荣大工程材料股份有限公司 | Method for repairing bottom of annular heating furnace |
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