CN202648409U - Furnace liner structure of high-temperature kiln - Google Patents
Furnace liner structure of high-temperature kiln Download PDFInfo
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- CN202648409U CN202648409U CN 201220273305 CN201220273305U CN202648409U CN 202648409 U CN202648409 U CN 202648409U CN 201220273305 CN201220273305 CN 201220273305 CN 201220273305 U CN201220273305 U CN 201220273305U CN 202648409 U CN202648409 U CN 202648409U
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- kiln furnace
- insulation layer
- thermal insulation
- high temperature
- wall
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Abstract
The utility model relates to a furnace liner structure of a high-temperature kiln. The furnace liner structure comprises a kiln shell, wherein a heat-insulation layer is fixedly arranged on the outer wall of the kiln shell; and a fireproof plastic layer is fixedly arranged on the outer wall of the heat-insulation layer. The furnace liner structure of the high-temperature kiln has the advantages of simple structure, scientific and reasonable design, simplicity in manufacturing, low cost, high-temperature resistance, good heat vibration resistance, short maintenance and drying time, and relatively good quality stability and uniformity.
Description
Technical field
The utility model belongs to the high temperature kiln field, especially a kind of high temperature kiln furnace lining structure.
Background technology
High temperature kiln is the equipment that modern enterprise often uses, the good and bad service life that directly affects kiln of furnace lining quality.At present the furnace lining structure of high temperature kiln mainly is divided into two kinds of firebrick structure and indefinite form material structures.The furnace lining of firebrick structure is position the weakest in the furnace lining owing to there is brickwork joint, and the destruction of furnace lining often at first occurs herein.The indefinite form material structure is take castable as main.Castable have easy construction, globality strong, safeguard the characteristics such as simple, extensive use in liner of industry kiln, but the castable structure there are the following problems:
1, serviceability temperature is not very high.The normal pouring material mostly adopts aluminate cement to make bond, and the CaO in the aluminate cement at high temperature forms low-melting submellite, seriously reduces serviceability temperature and the structural strength of castable.
2, thermal shock resistance is poor.The normal pouring material belongs to fragile material, often occurrence temperature drastic change in the operating process of high temperature kiln, and refractory lining can produce thermal stress, after the circulation several times, can cause peeling off of castable furnace lining.In case peel off, the lining thickness of exfoliation is with attenuate, and casing temperature can rise, and affects structural safety, and the furnace lining fragment that peels off can stop up the stove inside aperture, causes major accident.
3, maintenance and furnace drying time are long.Castable must be carried out the moist maintenance of certain hour, and the aquation that is beneficial to cement forms intensity, during this period of time generally about 3 days.Owing to contain a large amount of moisture in the castable furnace lining, need before use to carry out baker and remove internal moisture.Moisture in the castable exists with Free water with in conjunction with two kinds of forms of water.Free water deviate from temperature about 110 ℃, deviate from temperature about 320 ℃ in conjunction with water.Castable forms after aquation among the dense gel-filled hole between particle, moisture will be deviate to overcome very large resistance among the hole between the particle, it is very slow to deviate from speed, in case pick up speed moisture becomes rapidly steam, produce very large pressure, destroy the castable internal structure, even form crackle.Add after the anti-knock agent, can form fine hole, be beneficial to moisture and deviate from, but still need slowly long baker.
4, quality stability, lack of homogeneity.The castable construction need to add at the scene water and stir moulding, the quality of the performances such as intensity that how much determined castable of amount of water.It is more excellent generally to add the fewer performance of water.But it is fewer to add water, and the workability of castable is poorer.The quality of castable furnace lining depends on operating personnel's quality and gimmick to a great extent, and stability and the uniformity of quality are relatively poor.
The existence of above problem makes the liner of industry kiln of castable structure not long service life, and especially when temperature surpassed 1000 ℃, the life-span was shorter.When having acid atmosphere or medium, the service life of castable structure furnace lining is lower.
Summary of the invention
The purpose of this utility model is to overcome the deficiencies in the prior art, a kind of high temperature kiln furnace lining structure is provided, this furnace lining structure is simple, design science rationally, make simple, cost is lower, high temperature resistant, good thermal shock, maintenance and furnace drying time weak point, quality stability, uniformity are better.
The utility model solves its technical problem and is achieved through the following technical solutions:
A kind of high temperature kiln furnace lining structure comprises a kiln furnace shell, and its outer wall at the kiln furnace shell is fixedly mounted with thermal insulation layer, is fixedly mounted with the fire-resistant plastic bed of material at the thermal insulation layer outer wall.
And, described kiln furnace shell interior finishing anticorrosive paint layer or pitch enamelled coating.
And described thermal insulation layer adopts the lightweight heat-proof castable.
And, be fixed with anchor studs on the kiln furnace shell outer wall in the described thermal insulation layer.
And, the embedded anchored brick that is equipped with of described thermal insulation layer and the fire-resistant plastic bed of material, this anchored brick is fixedly mounted with by the fixing anchored brick fixed support of kiln furnace shell outer wall.
Advantage of the present utility model and beneficial effect are:
This high temperature kiln furnace lining structure, comprise a kiln furnace shell, its outer wall at the kiln furnace shell is fixedly mounted with thermal insulation layer, be fixedly mounted with the fire-resistant plastic bed of material at the thermal insulation layer outer wall, this furnace lining structure is simple, design science rationally, make simple, cost is lower, high temperature resistant, good thermal shock, maintenance and furnace drying time weak point, quality stability, uniformity are better.
Description of drawings
Fig. 1 is structural representation of the present utility model.
The specific embodiment
The utility model is described in further detail below by specific embodiment, and following examples are descriptive, is not determinate, can not limit protection domain of the present utility model with this.
A kind of high temperature kiln furnace lining structure; comprise a kiln furnace shell 5; kiln furnace shell interior finishing anticorrosive paint layer or pitch enamelled coating; this layer material mainly plays the effect that protection furnace shell steel plate is not corroded; its outer wall at the kiln furnace shell is fixedly mounted with thermal insulation layer 4; thermal insulation layer adopts the lightweight heat-proof castable, can be one deck, also can be multilayer.The thickness of thermal insulation layer draws according to Calculation of Heat Transfer, generally is not less than 50mm.The lightweight heat-proof castable can be the hydraulicity, also can be air hardening, thermohardening.The bulk density of lightweight heat-proof castable is generally at 300kg/m3～1500kg/m3.Thermal insulation layer also can adopt ceramic fibre class material to add the form of lightweight heat-proof castable, and the lightweight heat-proof castable generally adopts ramming, formwork cast or spraying method construction.Be fixed with anchor studs 3 on the kiln furnace shell outer wall in the thermal insulation layer, this anchor studs can generally adopt the metal anchor studs for V-type, Y type or not contour V-type, Y type, also can adopt nonmetal anchor studs.It is stainless steel commonly used 446#, the 304# of 6 ~ 10mm or 310# etc. or round steel that the thermal insulation layer anchor studs generally adopts diameter, also can adopt steel plate to make.The above straight section of 20mm is generally arranged at each top of anchor studs, also can not have, and is fixedly mounted with the fire-resistant plastic bed of material 6 at the thermal insulation layer outer wall, and the fire-resistant plastic bed of material should be selected suitable model according to the serviceability temperature of high temperature kiln.Plastic refractory is generally one deck, and its thickness generally is not less than 150mm.Plastic refractory should adopt the pneumatic hammer ramming process, also can adopt other equipment ramming processes.The embedded anchored brick 1 that is equipped with of thermal insulation layer and the fire-resistant plastic bed of material is generally high-alumina brick or contains the high-alumina brick of modified component, can be the refractory brick of other suitable components also, requires that thermal shock resistance is good, intensity is high, refractoriness is high.Anchored brick requires its surface to be lower than plastic refractory surface 0 ~ 5mm after installing, this anchored brick is fixedly mounted with by the fixing anchored brick fixed support 2 of kiln furnace shell outer wall, the anchored brick fixed support can be C type hook, also can be other forms, as long as can fixedly secure anchored brick.The anchored brick fixed support is generally stainless-steel sheet and rod iron combines, and also can be other forms.Anchored brick fixed support material is general identical with the thermal insulation layer anchor studs or be better than the thermal insulation layer anchor studs, and the anchored brick fixed support requires anchored brick to hang easily also must not looseness.
Claims (5)
1. a high temperature kiln furnace lining structure comprises a kiln furnace shell, and it is characterized in that: the outer wall at the kiln furnace shell is fixedly mounted with thermal insulation layer, is fixedly mounted with the fire-resistant plastic bed of material at the thermal insulation layer outer wall.
2. high temperature kiln furnace lining structure according to claim 1 is characterized in that: described kiln furnace shell interior finishing anticorrosive paint layer or pitch enamelled coating.
3. high temperature kiln furnace lining structure according to claim 1 is characterized in that: described thermal insulation layer employing lightweight heat-proof castable.
4. it is characterized in that according to claim 1 or 3 described high temperature kiln furnace lining structures: be fixed with anchor studs on the kiln furnace shell outer wall in the described thermal insulation layer.
5. high temperature kiln furnace lining structure according to claim 1 is characterized in that: the embedded anchored brick that is equipped with of described thermal insulation layer and the fire-resistant plastic bed of material, this anchored brick is fixedly mounted with by the fixing anchored brick fixed support of kiln furnace shell outer wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273305 CN202648409U (en) | 2012-06-11 | 2012-06-11 | Furnace liner structure of high-temperature kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201220273305 CN202648409U (en) | 2012-06-11 | 2012-06-11 | Furnace liner structure of high-temperature kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202648409U true CN202648409U (en) | 2013-01-02 |
Family
ID=47417506
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201220273305 Expired - Lifetime CN202648409U (en) | 2012-06-11 | 2012-06-11 | Furnace liner structure of high-temperature kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN202648409U (en) |
-
2012
- 2012-06-11 CN CN 201220273305 patent/CN202648409U/en not_active Expired - Lifetime
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Guo Chengqiang Inventor before: Su Yanbin |
|
| COR | Change of bibliographic data | ||
| CX01 | Expiry of patent term |
Granted publication date: 20130102 |
|
| CX01 | Expiry of patent term |