CN104556634A - Method for maintaining crown of kiln - Google Patents
Method for maintaining crown of kiln Download PDFInfo
- Publication number
- CN104556634A CN104556634A CN201410823690.0A CN201410823690A CN104556634A CN 104556634 A CN104556634 A CN 104556634A CN 201410823690 A CN201410823690 A CN 201410823690A CN 104556634 A CN104556634 A CN 104556634A
- Authority
- CN
- China
- Prior art keywords
- thermal expansion
- silica brick
- zero thermal
- kiln
- expansion silica
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Classifications
-
- C—CHEMISTRY; METALLURGY
- C03—GLASS; MINERAL OR SLAG WOOL
- C03B—MANUFACTURE, SHAPING, OR SUPPLEMENTARY PROCESSES
- C03B5/00—Melting in furnaces; Furnaces so far as specially adapted for glass manufacture
- C03B5/16—Special features of the melting process; Auxiliary means specially adapted for glass-melting furnaces
- C03B5/42—Details of construction of furnace walls, e.g. to prevent corrosion; Use of materials for furnace walls
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Organic Chemistry (AREA)
- Furnace Housings, Linings, Walls, And Ceilings (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Ceramic Products (AREA)
Abstract
The invention discloses a method for maintaining a crown of a kiln. The method comprises the following steps: (1), processing zero inflated silica bricks according to the size of flame leaking holes on the top of the crown of the kiln, wherein the zero inflated silica bricks are matched with the flame leaking holes in size; (2), mounting the processed zero inflated silica bricks on a hanging bracket; and (3), under the environment of non-stop production, hanging the zero inflated silica bricks to the positions of the flame leaking holes, filling the gaps between the zero inflated silica bricks and the crown of the kiln by using a micro-inflated hot repairing mix and curing the micro-inflated hot repairing mix to accomplish maintenance. By adopting the method disclosed by the invention, the repair work can be directly carried out without stop production, corrosion and flake phenomena difficultly occur, and the method is simple to operate and the sealing property is good.
Description
Technical field
The present invention relates to glass preparation field, particularly relate to a kind of kiln arch top method for maintaining.
Background technology
Need high temperature melting in the preparation process of glass, and kiln is as the equipment of glass high temperature melting, after working long hours, on arch top, easily forms fire hole, particularly when hole is larger, kiln safety operation and administration measure is constituted a threat to.
Tradition hot repair method be adopt place cooling " water bag " or heat-resisting steel sheet and plate after reusable heat feed supplement shutoff, see Fig. 2.This kind of plugging method outstanding problem is after " water bag " used or heat-resisting steel sheet and plate use and ask when one section, in kiln 1560 DEG C high temperature corrosion gas effect under there is melting of leaking, as can not Timeliness coverage, cause certain harm will to kiln body, affect quality product simultaneously; In addition, along with the saturating fire hole in arch top place increases, " the water bag " of placement or heat-resisting steel sheet and plate repair quantity also to be increased thereupon, can increase the consumption of fuel because of " water bag " heat absorption simultaneously, and steel plate melting is fallen into and affected quality product in stove and even corrode fused cast refractories at the bottom of pond.Can attempt selecting to adopt suitable heat-stable material to carry out method for repairing and mending and improve alternative " water bag " or heat-resisting steel sheet and plate, change kiln hot repair process, guarantee that kiln long-term safety is run, reduce energy consumption, become kiln and use producer jointly to pay close attention to the problem of research.
So can guarantee do not need stopping production, maintenance when keeping in repair after that the unaffected guarantee kiln safety of kiln large arch one-piece construction runs, the maintenance process that operational process does not affect again quality product is the new needs of container glass industry development and technical new breakthrough.
Summary of the invention
Technical problem to be solved by this invention is, provides a kind of kiln arch top method for maintaining, directly can carry out repairing work in not blowing out, not easily occurs to corrode peeling phenomenon, simple to operate, good airproof performance.
In order to solve the problems of the technologies described above, the invention provides a kind of kiln arch top method for maintaining, comprising the following steps:
(1) according to the size of fire hole saturating on kiln arch top, processing zero thermal expansion silica brick, makes the matching size of zero thermal expansion silica brick and saturating fire hole close;
(2) the zero thermal expansion silica brick after processing is installed on suspension bracket;
(3) under the environment do not stopped production, zero thermal expansion silica brick is hung the position to saturating fire hole, adopt microdilatancy hot-patch material to fill up gap between zero thermal expansion silica brick and arch top silica brick, after the solidification of microdilatancy hot-patch material, complete maintenance.
As the improvement of such scheme, the method for described step (1) processing zero thermal expansion silica brick is by shaping by the dimensioned of the saturating fire hole of reality for standard-sized described zero thermal expansion silica brick.
As the improvement of such scheme, the method for described step (1) processing zero thermal expansion silica brick is adopt the method for casting to prepare the described zero thermal expansion silica brick coordinating saturating fire hole size.
As the improvement of such scheme, described suspension bracket comprises hoist cable and suspension rod, and described hoist cable is connected with described zero thermal expansion silica brick, and described zero thermal expansion silica brick is hung on described suspension rod.
As the improvement of such scheme, described suspension bracket adopts heat-resisting steels to make.
As the improvement of such scheme, the content of each composition of described zero thermal expansion silica brick comprises 99.0 ~ 99.7%SiO
2, 0.1 ~ 0.3%Al
2o
3, 0.01 ~ 0.03%Fe
2o
3, 0.01 ~ 0.02%K
2o, 0.01 ~ 0.04%Na
2o.
As the improvement of such scheme, the refractoriness under load of described zero thermal expansion silica brick is 1670 ~ 1680 DEG C, and it is 0.5 ~ 0.8 that thermal expansion system leads.
As the improvement of such scheme, described microdilatancy hot-patch material is the siliceous hot-patch material of microdilatancy.
Implement the present invention, there is following beneficial effect:
The present invention changes the maintenance mode that existing microdilatancy hot-patch material is combined with heat-resisting steel sheet and plate, but adopt zero thermal expansion silica brick as mainly vulcanizing material, the zero thermal expansion silica brick of the dimensioned according to saturating fire hole and suspension bracket are installed, the suspension bracket after assembling is made to put into fire hole, the gap between zero thermal expansion silica brick and arch top silica brick is filled again with microdilatancy hot-patch material, hot repair masonry and zero thermal expansion silica brick and former body of heater three are combined closely, solves the problem that sealing difficulty repaired by brick material.Adopt method for maintaining of the present invention, overcome existing employing " water bag " or heat-resisting steel sheet and plate and use the difficulty of to ask the rear melting that occurs leaking when one section, avoiding the steel plate because of melting to fall in stove affects the problem that quality product even corrodes fused cast refractories at the bottom of pond.
Because zero thermal expansion silica brick has excellent alkali resistant aggressiveness, low bulk, highly heatproof and shockproof energy, high refractoriness under load, low creep property, directly repairing work can be carried out under the hot environment of not blowing out, goods do not ftracture, indeformable, inclusion-free pollutes, not easily occur to corrode peeling phenomenon, zero thermal expansion silica brick can life-time service key position, safe and reliable.
In addition, adopt method for maintaining of the present invention to adopt the combination of zero thermal expansion silica brick erecting by overhang and microdilatancy hot-patch material, simple to operate, good airproof performance, solves the problem that sealing difficulty repaired by brick material.
Accompanying drawing explanation
Fig. 1 is the schema of kiln arch top of the present invention method for maintaining;
Fig. 2 is the installing schematic diagram of existing kiln arch top maintenance;
Fig. 3 is the installing schematic diagram of kiln arch top of the present invention maintenance.
Embodiment
For making the object, technical solutions and advantages of the present invention clearly, below in conjunction with accompanying drawing, the present invention is described in further detail.
Composition graphs 1, the invention provides a kind of kiln arch top method for maintaining, comprises the following steps:
S100, according to the size of fire hole saturating on kiln arch top, processing zero thermal expansion silica brick, makes the matching size of zero thermal expansion silica brick and saturating fire hole close.
Kiln arch withstands on to be in hot environment for a long time and there will be fire hole, potential production safety hidden danger, and the size of fire hole differs especially thoroughly, and position is different, needs the saturating fire hole for different size to adopt different method for maintaining.Generally, the less saturating fire hole in aperture only need be filled up with microdilatancy hot-patch material, if but the aperture of fire hole is larger thoroughly, then need to adopt heat-resisting steel sheet and plate through saturating fire hole, hanging on arch top, then is filled on heat-resisting steel sheet and plate with microdilatancy hot-patch material, can be combined closely with arch top silica brick 1 after the solidification of microdilatancy hot-patch material, good airproof performance, plays the effect of repairing; Or the shutoff of microdilatancy hot-patch material is used in placement " water bag " again in saturating fire hole.But " water bag " or heat-resisting steel sheet and plate in kiln 1560 DEG C high temperature corrosion gas effect under occur leaking or melting, as can not Timeliness coverage, fused cast refractories at the bottom of pond will be corroded, affect quality product simultaneously.And existing method for maintaining needs to stop producing just can carry out, and affects production efficiency.
For this reason, the present invention changes original method for maintaining, adopts a kind of zero thermal expansion silica brick as main repair materials.Wherein, the content of each composition of described zero thermal expansion silica brick comprises 99.0 ~ 99.7%SiO
2, 0.1 ~ 0.3%Al
2o
3, 0.01 ~ 0.03%Fe
2o
3, 0.01 ~ 0.02%K
2o, 0.01 ~ 0.04%Na
2o.The SiO of zero thermal expansion silica brick of the present invention
2content is greater than 99%, stable crystal form, compound with regular structure, and other foreign matter contents are low, not easily expand, and goods are not easy to crack, Heat stability is good.
Preferably, the content of each composition of described zero thermal expansion silica brick comprises 99.2 ~ 99.65%SiO
2, 0.2 ~ 0.3%Al
2o
3, 0.02 ~ 0.03%Fe
2o
3, 0.01 ~ 0.015%K
2o, 0.01 ~ 0.015%Na
2o.
More preferably, the content of each composition of described zero thermal expansion silica brick comprises 99.65%SiO
2, 0.3%Al
2o
3, 0.03%Fe
2o
3, 0.01%K
2o, 0.01%Na
2o.
Described zero thermal expansion silica brick and other servicing materialss existing are carried out the detection of physical and chemical performance by testing crew, and detected result is as shown in the table:
| Classification | Quartz brick | Arch top silica brick | Zircon brick | Zero thermal expansion silica brick |
| Volume density (g/cm 3) | 1.84 | 1.84 | 3.5 | 1.85 |
| Thermal expansion system leads (%) | 0.05 | 1.2~1.3 | 0.05 | 0.5~0.8 |
| Compressive strength (MPa) | 45 | 45 | 90 | 70 |
| Refractoriness under load (DEG C) | 1400 | 1680 | 1700 | 1680 |
| Chemical property | Excellent | Well | Well | Excellent |
| Pollute | Nothing | Nothing | Gently | Nothing |
| Thermostability | Excellent | Difference | Well | Excellent |
| Costco Wholesale | Expensive | Cheaply | Expensive | Moderate |
As seen from the table, the thermal expansion system of quartz brick and zircon brick leads very low, deformation can not be expanded because in-furnace temperature is high, but the refractoriness under load of quartz brick is lower, differ larger with the refractoriness under load of arch top silica brick, and quartz brick and these two kinds of costs of vulcanizing material of zircon brick high, be unsuitable for widely using.And kiln arch top silica brick leads because it has larger thermal expansion system, if be filled on fire hole as vulcanizing material, can expanded by heating, be easily out of shape, be not suitable for filling up fire hole.And the refractoriness under load of zero thermal expansion silica brick is high, 1680 DEG C can be reached, close to arch top silica brick lotus soft quota; And the coefficient of thermal expansion of zero thermal expansion silica brick is close to zero, Heat stability is good, under the hot environment of not blowing out, directly can carries out repairing work, goods do not ftracture, indeformable; Zero thermal expansion silica brick is after at high temperature good, the stabilized glass kiln of chemical property is repaired, and inclusion-free pollutes, and not easily occurs to corrode peeling phenomenon, and zero thermal expansion silica brick can life-time service key position, safe and reliable.
By the research to zero thermal expansion silica brick chemical composition, physicals, find that it has excellent alkali resistant aggressiveness, low bulk, highly heatproof and shockproof energy, high refractoriness under load, low creep property, be adapted at glass bottle and jar kiln uses.
Because the size of the hole of each fire hole differs, when using zero thermal expansion silica brick to keep in repair kiln, need to carry out adaptive processing to zero thermal expansion silica brick, following embodiment can be adopted: obtain zero thermal expansion silica brick by the standard size of kiln arch top silica brick, determine to be made up of how many blocks of zero thermal expansion silica bricks according to the size of hole, the need of processing means such as severing part zero thermal expansion silica bricks.
Zero thermal expansion silica brick is carried out to the another kind of embodiment of adaptability processing: according to the bore hole size of saturating fire hole, the size of design zero thermal expansion silica brick, adopts the mode of casting to produce the zero thermal expansion silica brick of applicable fire hole size.
S101, is installed in the zero thermal expansion silica brick after processing on suspension bracket.
It should be noted that, suspension bracket of the present invention adopts heat-resisting steels to make, and comprise hoist cable 4 and suspension rod 3, described hoist cable 4 is connected with described zero thermal expansion silica brick 2, makes described zero thermal expansion silica brick 2 hang on described suspension rod 3, as shown in Figure 3.During assembling, as adopted the first zero thermal expansion silica brick 2 processing mode, first determine the block number of zero thermal expansion silica brick 2, if desired then every block zero thermal expansion silica brick 2 of polylith zero thermal expansion silica brick 2 is all fixedly connected with hoist cable 4, hoist cable 4 is hung again on suspension rod 3, and adopt microdilatancy hot-patch material to be connected and fixed between two adjacent zero thermal expansion silica bricks 2, multiple zero thermal expansion silica brick 2 is formed a whole silica brick group; As adopted the second zero thermal expansion silica brick 2 processing mode, only two hoist cables need be fixed on the zero thermal expansion silica brick two ends of casting.
Described zero thermal expansion silica brick 2 had first been assembled before putting into the position of fire hole with suspension bracket, directly the suspension bracket after assembling was put into fire hole during maintenance, simple to operate, did not need blowing out to keep in repair.
The heat-resisting steelframe of suspension bracket of the present invention and existing maintenance kiln unlike: the heat-resisting steel sheet and plate 6 of heat-resisting steelframe, in order to play the effect of support, need be located at the inwall on arch top, and suffered temperature is that whole heat-resisting steelframe is the highest.Although heat-resisting steel sheet and plate 6 has resistant to elevated temperatures attribute, under the effect of high temperature corrosion gas, occur melting, the heat-resisting steel sheet and plate 6 of melting is fallen in stove and can be affected quality product, even corrodes fused cast refractories at the bottom of pond.And the present invention adopts suspension bracket and zero thermal expansion silica brick 2 to assemble the erecting by overhang formed, what be positioned at the inwall on arch top is zero thermal expansion silica brick 2, because zero thermal expansion silica brick 2 has excellent thermostability and alkali resistant aggressiveness, there will not be melting phenomenon when kiln normally uses.
S102, hangs the position to saturating fire hole by zero thermal expansion silica brick under the environment do not stopped production, and adopts microdilatancy hot-patch material to fill up gap between zero thermal expansion silica brick and arch top silica brick, completes maintenance after the solidification of microdilatancy hot-patch material.
After S101 step, zero thermal expansion silica brick 2 is hung the position to saturating fire hole, now leave gap between zero thermal expansion silica brick 2 and kiln arch top silica brick 1, need microdilatancy hot-patch material 5 filling chink, bond two kinds of silica bricks, and zero thermal expansion silica brick 2 is fixed on arch top.Microdilatancy hot-patch material 5 character is similar to kiln arch top silica brick 1 physicochemical property, can at high temperature be combined into one, not easy to crack, good seal.Adopt microdilatancy hot-patch material 5 to seal, hot repair masonry and zero thermal expansion silica brick 2 and former body of heater three are combined closely, solve the problem that sealing difficulty repaired by brick material.
Preferably, microdilatancy hot-patch material of the present invention is the siliceous hot-patch material of microdilatancy.The character of siliceous hot-patch material and kiln arch top silica brick, zero thermal expansion silica brick closer to.
It should be noted that, microdilatancy hot-patch material cohesiveness is good, explosion-proof performance is excellent, high-temperature behavior and mend the characteristics such as part material is suitable.Producing microdilatancy characteristic under hot-patch material in particular for repairing gap also must have high temperature, so just can prevent situation about coming off because patching material shrinks from occurring.Microdilatancy hot-patch material adopts Al
2o
3, ZrO
2, SiO
2etc. main aggregate by adding suitable explosion-proof fiber and swelling agent, the explosion and the gap that effectively prevent hot-patch material produce.The features such as product has that intensity is high, cohesive force is strong, explosion-proof and microdilatancy.
Facts have proved, adopt kiln arch top of the present invention method for maintaining can realize not stopping kiln construction, keep in repair larger fire-pulling hole, save time, laborsaving, be desirable furnace maintenance scheme.The application of this method ensure that and the safety of kiln effectively extends the work-ing life of melting furnaces, reduces the consumption of fuel.
Finally to should be noted that; above embodiment is only in order to illustrate technical scheme of the present invention but not limiting the scope of the invention; although be explained in detail the present invention with reference to preferred embodiment; those of ordinary skill in the art is to be understood that; can modify to technical scheme of the present invention or equivalent replacement, and not depart from essence and the scope of technical solution of the present invention.
Claims (8)
1. a kiln arch top method for maintaining, is characterized in that, comprise the following steps:
(1) according to the size of fire hole saturating on kiln arch top, processing zero thermal expansion silica brick, makes the matching size of zero thermal expansion silica brick and saturating fire hole close;
(2) the zero thermal expansion silica brick after processing is installed on suspension bracket;
(3) under the environment do not stopped production, zero thermal expansion silica brick is hung the position to saturating fire hole, adopt microdilatancy hot-patch material to fill up gap between zero thermal expansion silica brick and arch top silica brick, after the solidification of microdilatancy hot-patch material, complete maintenance.
2. kiln arch top method for maintaining as claimed in claim 1, is characterized in that, the method for described step (1) processing zero thermal expansion silica brick is by shaping by the dimensioned of the saturating fire hole of reality for standard-sized described zero thermal expansion silica brick.
3. kiln arch top method for maintaining as claimed in claim 1, is characterized in that, the method for described step (1) processing zero thermal expansion silica brick is adopt the method for casting to prepare the described zero thermal expansion silica brick coordinating saturating fire hole size.
4. kiln arch top method for maintaining as claimed in claim 1, it is characterized in that, described suspension bracket comprises hoist cable and suspension rod, and described hoist cable is connected with described zero thermal expansion silica brick, and described zero thermal expansion silica brick is hung on described suspension rod.
5. kiln arch top method for maintaining as described in claim 1 or 4, is characterized in that, described suspension bracket adopts heat-resisting steels to make.
6. kiln arch top method for maintaining as claimed in claim 1, it is characterized in that, the content of each composition of described zero thermal expansion silica brick comprises 99.0 ~ 99.7%SiO
2, 0.1 ~ 0.3%Al
2o
3, 0.01 ~ 0.03%Fe
2o
3, 0.01 ~ 0.02%K
2o, 0.01 ~ 0.04%Na
2o.
7. kiln arch top method for maintaining as claimed in claim 6, it is characterized in that, the refractoriness under load of described zero thermal expansion silica brick is 1670 ~ 1680 DEG C, and it is 0.5 ~ 0.8 that thermal expansion system leads.
8. kiln arch top method for maintaining as claimed in claim 1, it is characterized in that, described microdilatancy hot-patch material is the siliceous hot-patch material of microdilatancy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823690.0A CN104556634A (en) | 2014-12-26 | 2014-12-26 | Method for maintaining crown of kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410823690.0A CN104556634A (en) | 2014-12-26 | 2014-12-26 | Method for maintaining crown of kiln |
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| Publication Number | Publication Date |
|---|---|
| CN104556634A true CN104556634A (en) | 2015-04-29 |
Family
ID=53073832
Family Applications (1)
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|---|---|---|---|
| CN201410823690.0A Pending CN104556634A (en) | 2014-12-26 | 2014-12-26 | Method for maintaining crown of kiln |
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|---|---|
| CN (1) | CN104556634A (en) |
Cited By (6)
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| CN106045278A (en) * | 2016-04-27 | 2016-10-26 | 长兴旗滨玻璃有限公司 | A hot patching method for a mouse hole of a glass melting furnace |
| CN106288808A (en) * | 2016-08-12 | 2017-01-04 | 上海杰汇炉窑新技术有限公司 | The method for maintaining of industrial furnace regenerator lattice and application |
| CN110590127A (en) * | 2019-09-30 | 2019-12-20 | 安徽通显新材料股份有限公司 | Auxiliary device is repaired on glass kiln arch top |
| CN110806106A (en) * | 2019-10-29 | 2020-02-18 | 首钢京唐钢铁联合有限责任公司 | Method and structure for repairing collapse of refractory material at top of heating furnace |
| CN111747633A (en) * | 2020-06-24 | 2020-10-09 | 株洲醴陵旗滨玻璃有限公司 | Method for repairing rat hole of melting furnace |
| CN115385556A (en) * | 2021-05-25 | 2022-11-25 | 上海杰汇炉窑新技术有限公司 | Maintenance structure, method and application for sinking of silicon brick arch body of industrial furnace |
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Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106045278A (en) * | 2016-04-27 | 2016-10-26 | 长兴旗滨玻璃有限公司 | A hot patching method for a mouse hole of a glass melting furnace |
| CN106045278B (en) * | 2016-04-27 | 2019-04-02 | 长兴旗滨玻璃有限公司 | A kind of glass melter rat hole hot patching method |
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| CN106288808B (en) * | 2016-08-12 | 2018-12-25 | 上海杰汇炉窑新技术有限公司 | The method for maintaining of industrial furnace regenerator lattice and application |
| CN110590127A (en) * | 2019-09-30 | 2019-12-20 | 安徽通显新材料股份有限公司 | Auxiliary device is repaired on glass kiln arch top |
| CN110590127B (en) * | 2019-09-30 | 2024-04-09 | 安徽通显新材料股份有限公司 | Auxiliary device for repairing crown of glass kiln |
| CN110806106A (en) * | 2019-10-29 | 2020-02-18 | 首钢京唐钢铁联合有限责任公司 | Method and structure for repairing collapse of refractory material at top of heating furnace |
| CN111747633A (en) * | 2020-06-24 | 2020-10-09 | 株洲醴陵旗滨玻璃有限公司 | Method for repairing rat hole of melting furnace |
| CN115385556A (en) * | 2021-05-25 | 2022-11-25 | 上海杰汇炉窑新技术有限公司 | Maintenance structure, method and application for sinking of silicon brick arch body of industrial furnace |
| CN115385556B (en) * | 2021-05-25 | 2024-02-20 | 上海杰汇炉窑新技术有限公司 | Maintenance structure, method and application of sinking of industrial furnace crown block |
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Application publication date: 20150429 |
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