CN105461328A - Semidry coke oven gunning material - Google Patents
Semidry coke oven gunning material Download PDFInfo
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- CN105461328A CN105461328A CN201410417535.9A CN201410417535A CN105461328A CN 105461328 A CN105461328 A CN 105461328A CN 201410417535 A CN201410417535 A CN 201410417535A CN 105461328 A CN105461328 A CN 105461328A
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- coke oven
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
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Abstract
The invention provides a semidry coke oven gunning material, which is characterized by comprising the following components by weight: 50-65 parts of 300mesh-5mm flint clay, 10-20 parts of 200-500mesh alumina, 1-5 parts of 200-300mesh A1203, 5-10 parts of clay, 1-5 parts of silica micropowder, and 2-4 parts of cement. The preparation method includes: mixing the components with 5-10 parts of an additive and 10-15 parts of water fully in a stirrer. The gunning material provided by the invention has the characteristics of large gunning amount, few dropping material during repair, convenient operation and short repairing time. During gunning material preparation, the water adding amount is small, and the porosity is low. The gunning layer and the wall surface are combined firmly, and after gunning, the hanging time is long. The gunning material provided by the invention is applicable to repair of any coke oven part, and is especially suitable for crack, small cave and deep denuded wall repair.
Description
Technical field
The present invention relates to Gunning refractory technology field, particularly relate to a kind of Semi dry Process Patching Material for Coke Oven.
Background technology
The most important part of coking furnace shaft is coking chamber, the reason of its coup injury furnace wall brick adds to the horizontal pressure of exception of furnace wall when being coke pushing, the furnace wall brick of coke oven generally adopts silica brick to build by laying bricks or stones, silica brick is the better heat stability of 600-1400 DEG C, low in below 6000C thermostability, and in the production process of coke oven, by the impact that the fire door cycle opens, furnace wall rapid heat cycle, makes furnace wall brick inside produce stress and break.Coking chamber metope is originally smooth, but after crackle appears in furnace wall, the mechanicals efforts when friction destruction effect of coke and coke pushing makes crackle expand very soon, can cause the arrisdefect of laying bricks or come off time serious.Damaged form main in coke furnace carbonization chamber is crackle, hole, falls brick, it is the method extending coke oven a kind of simple and feasible in work-ing life to the reparation of oven wall of coke oven carbonization chamber, traditional wet method hot repair method,: adopt water glass pug or phosphoric acid pug as patching material, but its exist solution cavity area when repair operation difficulty, bridging time short, pug peels off increase, cannot the shortcoming of cold operation.Flame patching to degree of depth crackle, furnace wall vertical crack and furnace roof crackle and the little position of temperature variation very effective, but there is the anti-rapid heat cycle poor performance of weldering meat in it, and operation easier is large, the shortcoming that cost is high.High-temperature material spraying method, existing refractoriness is high, cohesiveness and plasticity-good, be affiliated to hard, bridging time long, repair the good advantage of planarization, seedy easily precipitates, falls many, the not easy to operate and repairing facial cleft line of material and the many shortcoming of bubble again.Semi dry gunning technology is coke oven technology more advanced abroad at present, which overcome the shortcoming in original technology, but current domestic use Gunning refractory is all import, expensive, and formula is maintained secrecy.Introduction To Cn Patent " a kind of wet flame jet-repairing method for refractory material ", is wet flame jet-repairing due to what adopt, makes the loss of adhesion of spray repair, thus affect spray repair effect.
Summary of the invention
The object of the present invention is to provide a kind of Gunning refractory adopting semidrying to carry out coke oven, during batching, amount of water is few, and its cost is low, and spray repair amount is large, and Bonding strength is high, can import substitutes completely.
The technical scheme that the present invention realizes is:
A kind of Semi dry Process Patching Material for Coke Oven, the weight proportion of each component is: flint clay: 300 order-5mm are 50-65 part, alumina: 200-500 order is 10-20 part, A1
20
3: 200-300 order is 1-5 part, clay: 5-10 part, fine silica powder: 1-5 part, cement: 2-4 part.It is formulated as and each component is fully mixed with 5-10 part additive and 10-15 part water in stirrer.
This Semi dry Process Patching Material for Coke Oven is applicable to the repairing at any position of coke oven, comprises burner, furnace wall, furnace roof, the position such as hole, upcast of coalingging.
The invention has the beneficial effects as follows: because recipe ingredient of the present invention is selected rationally, component particle size distribution is also comparatively reasonable, under lower rebound degree, maintain good resistance to fouling and resistance to flaking.By the test to spray repair samples dried characteristic, differential thermal analysis, compressive strength, thermal conductivity, the aquation that drying property of the present invention meets spray repair combines and ceramic combination.Gunning refractory variation with temperature, Performance comparision is stablized.Compressive strength and thermal conductivity are all higher.Adopt Gunning refractory of the present invention to repair coke oven, also have following advantage: 1, spray repair amount is large, and during repairing, blanking is few, easy to operate, the time of repairing is short.2, when Gunning refractory is got the raw materials ready, amount of water is low, is only 12%-20%, and little to furnace wall negative impact, void content is low.3, spray repair layer is combined with metope firmly, and after spray repair, the bridging time is long, especially applicable crackle, little solution cavity, the wall-surface patching more deeply degraded.4, be applicable to the repairing at any position of coke oven, comprise burner, furnace wall, stove item, the position such as hole, upcast of coalingging.5, compare with Blaze Weld Technique, not only mechanical means spray repair operation uses medium few, and equipment, pug expense are relatively low.
Embodiment
Following examples are that the present invention goes out to set forth further.
Embodiment 1: a kind of Semi dry Process Patching Material for Coke Oven, in 100 kilograms, its weight proportion is:
Flint clay: 300 order-5mm are 55 kilograms
Alumina: 200-500 order is 15 kilograms
A1
20
3: 200-300 order is 3 kilograms
Clay: 7 kilograms
Fine silica powder: 3 kilograms
Cement: 2 kilograms
It is formulated as and each component is fully mixed with 5 kilograms of additives and 15 kg of water in stirrer.With silica brick as spray repair layer, carry out spray repair at 700 DEG C, compressed air pressure is 0.5mpa, SiC granularity 0.5-0.9, SiC consumption 250g/ time, sample is 20Omm apart from nozzle distance, and nozzle diameter is 4.8mm, is then warming up to 1200 DEG C, be incubated 5 hours, the spray repair condition of import pug is identical with it, then measures Bonding strength, adopts the Bonding strength of Gunning refractory of the present invention to be 1.9kg/cm
2, the Bonding strength adopting import Gunning refractory is 1.8kg/cm
2.
Embodiment 2: a kind of coke oven spray-repairing material, in 100 kilograms, its weight proportion is:
Flint clay: 300 order-5mm are 60 kilograms
Alumina: 200-500 order is 20 kilograms
A1
20
3: 200-300 order is 5 kilograms
Clay: 10 kilograms
Fine silica powder: 2 kilograms
Cement: 3 kilograms
It is formulated as and each component is fully mixed with 6 kilograms of additives and 14 kg of water in stirrer.Serve as a contrast as by benefit with high alumina brick, carry out spray repair at about 850 degree, compressed air pressure is 0.5mpa, SiC granularity 0.5-0.9, SiC consumption 320g/ time, sample is 20Omm apart from nozzle distance, and nozzle diameter is 4.8mm, is then warming up to 1100 DEG C, be incubated 5 hours, the spray repair condition of import pug is identical with it, then measures Bonding strength, adopts the Bonding strength of Gunning refractory of the present invention to be 3.21kg/cm
2, the Bonding strength adopting import Gunning refractory is 2.84kg/cm
2.
Claims (2)
1. a Semi dry Process Patching Material for Coke Oven, is characterized in that the weight proportion of each component is: flint clay: 300 order-5mm are 50-65 part, alumina: 200-500 order is 10-20 part, A1
20
3: 200-300 order is 1-5 part, clay: 5-10 part, fine silica powder: 1-5 part, cement: 2-4 part, and it is formulated as and each component is fully mixed with 5-10 part additive and 10-15 part water in stirrer.
2. a kind of Semi dry Process Patching Material for Coke Oven according to claim 1, is characterized in that this Gunning refractory is applicable to the repairing at any position of coke oven, comprises burner, furnace wall, furnace roof, the position such as hole, upcast of coalingging.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417535.9A CN105461328A (en) | 2014-08-21 | 2014-08-21 | Semidry coke oven gunning material |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201410417535.9A CN105461328A (en) | 2014-08-21 | 2014-08-21 | Semidry coke oven gunning material |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN105461328A true CN105461328A (en) | 2016-04-06 |
Family
ID=55599552
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201410417535.9A Pending CN105461328A (en) | 2014-08-21 | 2014-08-21 | Semidry coke oven gunning material |
Country Status (1)
| Country | Link |
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| CN (1) | CN105461328A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565255A (en) * | 2016-11-07 | 2017-04-19 | 马鞍山钢铁股份有限公司 | Anti-scouring spraying material for dry quenching furnace chute bracket supporting column and spraying method |
| CN109233871A (en) * | 2018-09-05 | 2019-01-18 | 嘉峪关市长城望宇炉业有限责任公司 | The method of semi dry gunning sealing oven wall of coke oven carbonization chamber |
| CN111499400A (en) * | 2020-04-27 | 2020-08-07 | 河南省宏达炉业有限公司 | High-strength low-rebound fireproof spray coating and preparation method thereof |
-
2014
- 2014-08-21 CN CN201410417535.9A patent/CN105461328A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106565255A (en) * | 2016-11-07 | 2017-04-19 | 马鞍山钢铁股份有限公司 | Anti-scouring spraying material for dry quenching furnace chute bracket supporting column and spraying method |
| CN109233871A (en) * | 2018-09-05 | 2019-01-18 | 嘉峪关市长城望宇炉业有限责任公司 | The method of semi dry gunning sealing oven wall of coke oven carbonization chamber |
| CN111499400A (en) * | 2020-04-27 | 2020-08-07 | 河南省宏达炉业有限公司 | High-strength low-rebound fireproof spray coating and preparation method thereof |
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Legal Events
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| C06 | Publication | ||
| PB01 | Publication | ||
| WD01 | Invention patent application deemed withdrawn after publication | ||
| WD01 | Invention patent application deemed withdrawn after publication |
Application publication date: 20160406 |