CN201232068Y - Blast furnace air supply branch pipe with three layers of fire resistant inner lining - Google Patents
Blast furnace air supply branch pipe with three layers of fire resistant inner lining Download PDFInfo
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- CN201232068Y CN201232068Y CNU2008201900515U CN200820190051U CN201232068Y CN 201232068 Y CN201232068 Y CN 201232068Y CN U2008201900515 U CNU2008201900515 U CN U2008201900515U CN 200820190051 U CN200820190051 U CN 200820190051U CN 201232068 Y CN201232068 Y CN 201232068Y
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- branch pipe
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Abstract
The utility model relates to a blast furnace air supply pipe and discloses a three layer fire-resisting lining blast furnace air supply branch pipe which comprises an outer steel shell, a thermal insulating layer and a fire-resisting lining from outside to inside; the thermal insulating layer is composed of fire-resisting fiber and fire bricks, and the fire-resisting lining is composed of heavy casting materials. The branch pipe has reasonable structure, good thermal stability and high strength, and can resist the scouring of high temperature air flow; the surface temperature of the steel shell can be controlled below 200 DEG.C, the installation is convenient, the use effect is good; compared with the prior art, the service life of the pipes in the utility model is prolonged.
Description
Technical field
The utility model relates to a kind of pipeline of blast furnace air-supply usefulness.
Background technology
Existing blowpipe mainly contains 3 kinds.First kind is the refractory lining that the cast of refractory fiber floor and refractory castable is set in the outer box hat, and the advantage of this arm is to make simple and conveniently, and shortcoming is that the refractory lining steadiness is poor, easily cracking and refractory fiber floor can not guarantee for a long time that box hat is not rubescent; Second kind is that double-deck refractory lining is set in the outer box hat, be respectively with the thermofin of light-weight refractory castable cast and the working lining of pouring into a mould with heavy refractory castable, characteristics are that making is fairly simple and effect of heat insulation is better, shortcoming is because the internal-external temperature difference of arm is bigger, the refractory lining steadiness is still relatively poor, ftracture late period easily, causes the box hat surface rubescent, and work-ing life is not long; The third and second kind of arm are similar, different is that its working lining is made up of refractory brick, and its steadiness is better than second kind of arm, but because the working lining diameter is less, the block of refractory brick is made the technology complexity, and this arm can't overcome second kind of arm not long shortcoming in work-ing life equally.
The utility model content
Because the refractory lining steadiness is poor, thermofin can not guarantee for a long time that box hat is not rubescent and cause arm long problem in work-ing life in order to solve existing blast branch pipe of blast furnace, and the utility model provides a kind of three layers of refractory lining blast branch pipe of blast furnace, and technical scheme is as follows:
A kind of three layers of refractory lining blast branch pipe of blast furnace comprise outer box hat, thermofin and refractory lining from outside to inside successively, it is characterized in that described thermofin is made up of refractory fibre and refractory brick, and described refractory lining is made up of the heavy mould material.
To further being improved to of above-mentioned foundation structure, the thickness of thermofin is 20～100mm, highly is lower than box hat termination 20～40mm.
Further being improved on the said structure basis, described thermofin and refractory lining are formed flame retardant coating, and the total thickness of thermofin is less than 35% of the flame retardant coating total thickness, and the thickness of refractory lining is 70～150mm.
Further being improved on the said structure basis also comprises the anchor structure body, and the front end of described anchor structure body is fixed in the refractory lining, and the rear end is fixed on the box hat.
To further being optimized for of said structure, described anchor structure body is " Y " type, " V " type, T-shape or " L " type, and stub end is fixed in the refractory lining.
Further be optimized for, the stub end of described anchor structure body is vertical with the stub end direction of adjacent anchor fixing structure body.
As preferably, described anchor structure body is welded on the box hat.
Further preferred, described refractory brick is light fire brick.
Through improved the utility model, significant effect is arranged in practice, main performance has:
1. because thermofin has adopted refractory fibre and refractory brick bilayer structure, reduce the internal-external temperature difference of refractory brick in the thermofin, reduced the thermal stresses of refractory brick, weakened the refractory brick crack stress, guaranteed not ftractureing of refractory brick thermofin; Simultaneously,, reduce the internal-external temperature difference of refractory lining greatly, guarantee that refractory lining does not ftracture, solved the problem of refractory lining steadiness in the prior art, effectively prolonged the work-ing life of blowpipe owing to the heat insulation effect of double thermal insulation layer;
2. because the utility model has adopted these three layers of refractory linings of outer box hat, thermofin and refractory lining, make the box hat surface temperature be reduced to below the safety temperature of common iron, having solved in the prior art thermofin can not guarantee for a long time that box hat is not rubescent and cause arm long problem in work-ing life, not only improve the rigidity of box hat, and avoided the brittle zone of box hat;
3. because the thermofin in the utility model adopts refractory fibre and light fire brick, the working diameter of thermofin is fire-resistant brick the convenience greatly; And the refractory lining diameter is less, then adopts mould material, and manufacture craft is simple and convenient.
4, because the box hat surface temperature, reduces the hot blast loss greatly less than 200 ℃, energy-saving effect is obvious.
In a word, the utility model is rational in infrastructure, Heat stability is good, intensity height, can the withstand high temperatures air-flow wash away, the surface temperature of box hat can be controlled in below 200 ℃, and is easy for installation, result of use good.
Description of drawings
Fig. 1: be three layers of refractory lining blast branch pipe of blast furnace cross-sectional view;
Fig. 2: be A-A sectional view among Fig. 1;
Fig. 3: be " Y " type anchor structure synoptic diagram.
Embodiment
The utility model is described in further detail below in conjunction with accompanying drawing:
Three layers of refractory lining blast branch pipe of blast furnace cross-sectional view as shown in Figure 1 comprise outer box hat 1, the thermofin of being made up of refractory fibre 2 and refractory brick 3 and the refractory lining of being made up of the heavy mould material 4 from outside to inside successively.
The utility model adopts outer box hat 1, thermofin and refractory lining 4 these three layers of refractory linings, the bilayer structure that thermofin adopts refractory fibre 2 and refractory brick 3 to form, reduce the internal-external temperature difference of refractory brick 3 in the thermofin, reduce the thermal stresses of refractory brick 3, weaken refractory brick 3 crack stresses, thereby guarantee not ftractureing of refractory brick thermofin; Simultaneously,, can reduce the internal-external temperature difference of refractory lining 4 greatly, guarantee that refractory lining 4 does not ftracture, solve the problem of refractory lining steadiness difference in the prior art, effectively prolong the work-ing life of blowpipe owing to the heat insulation effect of double thermal insulation layer.
For the design of thermofin, its thickness is set to 20～100mm, highly is set to be lower than box hat termination 20～40mm;
Thermofin and refractory lining 4 are formed flame retardant coating, and the total thickness of thermofin is less than 35% of the flame retardant coating total thickness, and the thickness of refractory lining 4 is set to 70～150mm.
Also comprise anchor structure body 5 in the structure of the present utility model, the front end of anchor structure body 5 is fixed in the refractory lining 4, and the rear end is welded on the box hat.
For choosing of anchor structure body 5 shapes, what preferentially choose is " Y " type, " V " type, T-shape or " L " type, and stub end is fixed in the refractory lining 4;
For the setting of the position of anchor structure body 5, with vertical setting of stub end direction of stub end with the adjacent anchor fixing structure body 5 of anchor structure body 5;
On the Material Selection for refractory brick 3, what preferentially select is light fire brick.
Because the thermofin in the utility model adopts refractory fibre and light fire brick, big fire-resistant brick convenience of the working diameter of thermofin; And the refractory lining diameter is less, then adopts mould material, and manufacture craft is simple and convenient.
3200 cubic metres of blast funnace hot blast stoves of certain iron work, 1180 ℃ of wind pushing temperatures, three layers of refractory lining blast branch pipe of blast furnace box hat surface temperature that adopt said structure are between 180--200 ℃.
The content that is not described in detail in this specification sheets belongs to this area professional and technical personnel's known prior art.Need to prove in addition; above-mentioned embodiment just to the exemplary illustration of this patent and and non-limiting its protection domain; those skilled in the art can make some local changes to this patent, so long as just available without creative work, all within the protection domain of this patent.
Claims (8)
1, a kind of three layers of refractory lining blast branch pipe of blast furnace comprise outer box hat, thermofin and refractory lining from outside to inside successively, it is characterized in that described thermofin is made up of refractory fibre and refractory brick, and described refractory lining is made up of the heavy mould material.
2, three layers of refractory lining blast branch pipe of blast furnace as claimed in claim 1 is characterized in that, the thickness of thermofin is 20～100mm, highly are lower than box hat termination 20～40mm.
3, three layers of refractory lining blast branch pipe of blast furnace as claimed in claim 2 is characterized in that, described thermofin and refractory lining are formed flame retardant coating, and the total thickness of thermofin is less than 35% of the flame retardant coating total thickness, and the thickness of refractory lining is 70～150mm.
4, as claim 1,2 or 3 described three layers of refractory lining blast branch pipe of blast furnace, it is characterized in that also comprise the anchor structure body, the front end of described anchor structure body is fixed in the refractory lining, the rear end is fixed on the box hat.
5, three layers of refractory lining blast branch pipe of blast furnace as claimed in claim 4 is characterized in that, described anchor structure body is " Y " type, " V " type, T-shape or " L " type, and stub end is fixed in the refractory lining.
6, three layers of refractory lining blast branch pipe of blast furnace as claimed in claim 5 is characterized in that, the stub end of described anchor structure body is vertical with the stub end direction of adjacent anchor fixing structure body.
7, three layers of refractory lining blast branch pipe of blast furnace as claimed in claim 4 is characterized in that, described anchor structure body is welded on the box hat.
8, as claim 1,2 or 3 described three layers of refractory lining blast branch pipe of blast furnace, it is characterized in that described refractory brick is light fire brick.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201900515U CN201232068Y (en) | 2008-07-31 | 2008-07-31 | Blast furnace air supply branch pipe with three layers of fire resistant inner lining |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2008201900515U CN201232068Y (en) | 2008-07-31 | 2008-07-31 | Blast furnace air supply branch pipe with three layers of fire resistant inner lining |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201232068Y true CN201232068Y (en) | 2009-05-06 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2008201900515U Expired - Fee Related CN201232068Y (en) | 2008-07-31 | 2008-07-31 | Blast furnace air supply branch pipe with three layers of fire resistant inner lining |
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| CN (1) | CN201232068Y (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114167A (en) * | 2013-02-21 | 2013-05-22 | 李富朝 | Novel combined brick structure of self-locking sealed blast furnace warm air duct intersection |
| CN103808127A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Furnace body structure of cylindrical rotary thermal equipment |
| CN103808147A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Anchoring method of kiln liner of cylindrical rotary thermal equipment |
| CN103808148A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Anchoring structure of feed low-temperature section of cylindrical rotary thermal equipment |
| CN103808149A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Anchoring structure of high-temperature thermal reaction section of cylindrical rotary thermal equipment |
| CN103940217A (en) * | 2014-05-15 | 2014-07-23 | 辽宁向导科技发展有限公司 | Alloy baking furnace system |
| CN107119165A (en) * | 2017-06-27 | 2017-09-01 | 河南省登封市光大耐火材料有限公司 | A kind of high blast-furnace hot-air pipeline of thermal shock resistance |
| CN109073321A (en) * | 2016-09-28 | 2018-12-21 | 中外炉工业株式会社 | Refractory material structural body |
| CN111895789A (en) * | 2020-08-31 | 2020-11-06 | 贵阳明通炉料有限公司 | Large horizontal high-temperature tubular shakeproof furnace lining and manufacturing method thereof |
-
2008
- 2008-07-31 CN CNU2008201900515U patent/CN201232068Y/en not_active Expired - Fee Related
Cited By (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103114167A (en) * | 2013-02-21 | 2013-05-22 | 李富朝 | Novel combined brick structure of self-locking sealed blast furnace warm air duct intersection |
| CN103114167B (en) * | 2013-02-21 | 2014-04-23 | 郑州安耐克实业有限公司 | Novel combined brick structure of self-locking sealed blast furnace warm air duct intersection |
| CN103808127B (en) * | 2014-01-22 | 2015-11-11 | 洛阳市洛华粉体工程特种耐火材料有限公司 | A kind of cylindrical shape turns round the furnace binding of hot equipment |
| CN103808147A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Anchoring method of kiln liner of cylindrical rotary thermal equipment |
| CN103808148A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Anchoring structure of feed low-temperature section of cylindrical rotary thermal equipment |
| CN103808149A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Anchoring structure of high-temperature thermal reaction section of cylindrical rotary thermal equipment |
| CN103808148B (en) * | 2014-01-22 | 2015-10-28 | 洛阳市洛华粉体工程特种耐火材料有限公司 | A kind of cylindrical shape turns round the anchor structure of hot equipment charging low-temperature zone |
| CN103808149B (en) * | 2014-01-22 | 2015-10-28 | 洛阳市洛华粉体工程特种耐火材料有限公司 | A kind of cylindrical shape turns round the anchor structure of hot equipment high-temperature hot conversion zone |
| CN103808127A (en) * | 2014-01-22 | 2014-05-21 | 洛阳洛华窑业有限公司 | Furnace body structure of cylindrical rotary thermal equipment |
| CN103940217A (en) * | 2014-05-15 | 2014-07-23 | 辽宁向导科技发展有限公司 | Alloy baking furnace system |
| CN103940217B (en) * | 2014-05-15 | 2016-04-06 | 辽宁向导科技发展有限公司 | Alloy baking furnace system |
| CN109073321A (en) * | 2016-09-28 | 2018-12-21 | 中外炉工业株式会社 | Refractory material structural body |
| CN107119165A (en) * | 2017-06-27 | 2017-09-01 | 河南省登封市光大耐火材料有限公司 | A kind of high blast-furnace hot-air pipeline of thermal shock resistance |
| CN111895789A (en) * | 2020-08-31 | 2020-11-06 | 贵阳明通炉料有限公司 | Large horizontal high-temperature tubular shakeproof furnace lining and manufacturing method thereof |
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Legal Events
| Date | Code | Title | Description |
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| 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: 20090506 Termination date: 20140731 |
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| EXPY | Termination of patent right or utility model |