CN202509105U - Combination heat preservation lining for RH finery lower grooves - Google Patents
Combination heat preservation lining for RH finery lower grooves Download PDFInfo
- Publication number
- CN202509105U CN202509105U CN2012201219807U CN201220121980U CN202509105U CN 202509105 U CN202509105 U CN 202509105U CN 2012201219807 U CN2012201219807 U CN 2012201219807U CN 201220121980 U CN201220121980 U CN 201220121980U CN 202509105 U CN202509105 U CN 202509105U
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- finery
- layer
- grooves
- thermofin
- projections
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Abstract
The utility model relates to a combination heat preservation lining for RH finery lower grooves. The combination heat preservation lining for RH finery lower grooves comprises a working layer, a heat insulation layer and a permanent layer, wherein the working layer, the heat insulation layer and the permanent layer are arranged from inside to outside. The combination heat preservation lining for RH finery lower grooves is characterized in that an outer side wall of the working layer is connected with an inner side wall of the heat insulation layer through a plurality of projections and grooves in embedded mode, wherein the projections and the grooves are arranged uniformly, and joint positions are connected through refractory mortar; and an outer side wall of the heat insulation layer is connected with an inner side wall of the permanent layer through a plurality of projections and grooves in embedded mode, wherein the projections and the grooves are arranged uniformly, and joint positions are connected through refractory mortar. The working layer, the hear insulation layer and permanent layer are mutually connected in matched and embedded mode, the combination heat preservation lining for RH finery lower grooves reduces construction difficulty and construction time of on-site construction staff, shortens initial finery-dry-off time of finery operation, decreases construction quantity, and enhances construction efficiency. Meanwhile, the combination heat preservation lining for RH finery lower grooves enables gaps among layers to be small and uniform, decreases using quantity of the refractory mortar, effectively reduces loss of heat, further protects heat stability of the permanent layer, and slows down damage of the permanent layer.
Description
Technical field
The utility model relates to a kind of insulating lining, especially relates to a kind of RH refining furnace lower channel and uses the composite thermal insulation liner.
Background technology
In Iron And Steel Industry, temperature is the core of technological operation, in order to ensure molten steel temperature in ladle, tundish; Usually between its working lining and permanent layer with insulating fire brick building heat insulation thermofin, thereby between working lining and thermofin, have the slit, between permanent layer and thermofin, have the slit equally; In order to guarantee the safe and highly efficient operation of RH refining furnace, generally come joint filling with refractory mortar, because cooperating each other, working lining, thermofin and permanent layer can cause the slit bigger inadequately well; So both increased the usage quantity of refractory mortar, and increased workmen's engineering time and furnace drying time again, operating efficiency is lower; Cause the rising of production cost, simultaneously, thicker fire-resistant mud layer can cause the variation of effect of heat insulation; Scattering and disappearing of accelerated heat is unfavorable for the maintenance of furnace temperature, and influences the thermostability of permanent layer.
The utility model content
The applicant has carried out research and has improved to above-mentioned problem, provides a kind of RH refining furnace lower channel to use the composite thermal insulation liner; Reduce construction volume, improve operating efficiency, guarantee construction quality; Reduce the usage quantity of refractory mortar, reduce the thermosteresis of refining furnace, shorten refining furnace operation furnace drying time just.
In order to solve the problems of the technologies described above, the utility model adopts following technical scheme:
A kind of RH refining furnace lower channel is used the composite thermal insulation liner; Comprise from inside to outside the working lining, thermofin and the permanent layer that are provided with, the outer side wall of said working lining and the inner side-wall of said thermofin some projections and the groove through even setting matees setting-in each other and is connected with refractory mortar at seam crossing; The outer side wall of said thermofin and the inner side-wall of said permanent layer some projections and the groove through even setting matees setting-in each other and is connected with refractory mortar at seam crossing.
Further:
The xsect of said projection and groove is a rectangle.
The thickness of said working lining accounts for the 65%-75% of liner total thickness, and the thickness of said thermofin accounts for the 8%-12% of liner total thickness, and the thickness of said permanent layer accounts for the 15%-20% of liner total thickness.
Said thermofin adopts white olivine light heat-insulating material or high alumina light weight matter lagging material.
The technique effect of the utility model is:
The disclosed a kind of RH refining furnace lower channel of the utility model is used the composite thermal insulation liner; Working lining, thermofin and permanent layer some projections and the groove through even setting mated setting-in each other; Reduce site operation personnel's difficulty of construction and engineering time, shorten refining furnace operation furnace drying time just, reduce construction volume; Improve operating efficiency, guarantee construction quality; Simultaneously, the gap and the gap that reduce between each layer are even, reduce the usage quantity of refractory mortar; And guarantee heat insulation and preservation effect, effectively reduce scattering and disappearing of heat, and then the thermostability of protection permanent layer; Slow down the damage of permanent layer, realize better economic and social benefit.
Description of drawings
Fig. 1 is the structural representation of RH refining furnace lower channel with the composite thermal insulation liner.
Fig. 2 is the axial broken section enlarged view of Fig. 1.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the utility model is done further detailed explanation.
Like Fig. 1, shown in 2; The utility model comprises working lining 1, thermofin 2 and the permanent layer 3 that is provided with from inside to outside; The inner side-wall of the outer side wall of the inner side-wall of the outer side wall of working lining 1, thermofin 2 and thermofin 2, permanent layer 3 is respectively equipped with the some projections and the groove 4 of even setting; The inner side-wall of the outer side wall of working lining 1 and thermofin 2 matees setting-in each other through projection and groove 4, is connected with refractory mortar with thermofin 2 seam crossings at working lining 1.The inner side-wall of the outer side wall of thermofin 2 and permanent layer 3 matees setting-in each other through projection and groove 4, is connected with refractory mortar at the seam crossing of thermofin 2 with permanent layer 3.The xsect of projection and groove 4 can be the profile of tooth of each other coupling, trapezoidal, trilateral or rectangle, and in the present embodiment, the xsect of projection and groove 4 is a rectangle.Usually the thickness A of working lining 1 accounts for the 65%-75% of liner total thickness, and the thickness B of thermofin 2 accounts for the 8%-12% of liner total thickness, and the thickness C of permanent layer 3 accounts for the 15%-20% of liner total thickness.
In the present embodiment, thermofin 2 adopts white olivine light heat-insulating material or high alumina light weight matter lagging material.The thermofin 2 of white olivine light heat-insulating material, its volume density is at 0.8-1.0g/cm
3, compressive strength is at 8-12MPa, and thermal conductivity is at 0.35-0.44w/ (m.k) (600 ℃), and 12 hours heavily burning line of 1400 ℃ of insulations changes less than 0.5%.The thermofin 2 of high alumina light weight matter lagging material, its volume density is at 1.0-1.2g/cm
3, compressive strength is at 10-15MPa, and thermal conductivity is at 0.38-0.52w/ (m.k) (600 ℃), and 12 hours heavily burning line of 1400 ℃ of insulations changes less than 0.3%.
Claims (4)
1. a RH refining furnace lower channel is used the composite thermal insulation liner; Comprise from inside to outside the working lining, thermofin and the permanent layer that are provided with, it is characterized in that: the outer side wall of said working lining and the inner side-wall of said thermofin some projections and the groove through even setting matees setting-in each other and is connected with refractory mortar at seam crossing; The outer side wall of said thermofin and the inner side-wall of said permanent layer some projections and the groove through even setting matees setting-in each other and is connected with refractory mortar at seam crossing.
2. use the composite thermal insulation liner according to the described RH refining furnace of claim 1 lower channel, it is characterized in that: the xsect of said projection and groove is a rectangle.
3. use the composite thermal insulation liner according to the described RH refining furnace of claim 1 lower channel; It is characterized in that: the thickness of said working lining accounts for the 65%-75% of liner total thickness; The thickness of said thermofin accounts for the 8%-12% of liner total thickness, and the thickness of said permanent layer accounts for the 15%-20% of liner total thickness.
4. use the composite thermal insulation liner according to the described RH refining furnace of claim 1 lower channel, it is characterized in that: said thermofin adopts white olivine light heat-insulating material or high alumina light weight matter lagging material.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201219807U CN202509105U (en) | 2012-03-28 | 2012-03-28 | Combination heat preservation lining for RH finery lower grooves |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2012201219807U CN202509105U (en) | 2012-03-28 | 2012-03-28 | Combination heat preservation lining for RH finery lower grooves |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN202509105U true CN202509105U (en) | 2012-10-31 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2012201219807U Expired - Fee Related CN202509105U (en) | 2012-03-28 | 2012-03-28 | Combination heat preservation lining for RH finery lower grooves |
Country Status (1)
| Country | Link |
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| CN (1) | CN202509105U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798481A (en) * | 2021-09-27 | 2021-12-17 | 承德建龙特殊钢有限公司 | Mould for permanent layer of tundish, permanent layer and manufacturing method of permanent layer |
-
2012
- 2012-03-28 CN CN2012201219807U patent/CN202509105U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113798481A (en) * | 2021-09-27 | 2021-12-17 | 承德建龙特殊钢有限公司 | Mould for permanent layer of tundish, permanent layer and manufacturing method of permanent layer |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20121031 Termination date: 20170328 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |