CN203719377U - Corrugated pipe type air nozzle pipe for carbon rotary kiln - Google Patents
Corrugated pipe type air nozzle pipe for carbon rotary kiln Download PDFInfo
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- CN203719377U CN203719377U CN201320826001.2U CN201320826001U CN203719377U CN 203719377 U CN203719377 U CN 203719377U CN 201320826001 U CN201320826001 U CN 201320826001U CN 203719377 U CN203719377 U CN 203719377U
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- pipe
- air nozzle
- rotary kiln
- tuyere
- type air
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Abstract
The utility model relates to a carbon rotary kiln air nozzle for calcinating bulk carbon materials in aluminum electrolysis industry. According to the technical scheme, a corrugated pipe type air nozzle pipe for a carbon rotary kiln is characterized in that a steel corrugated pipe or a spiral pipe is arranged along the inner wall of the air nozzle pipe and is tightly combined with an outer lining of an air nozzle. An existing straight cylinder type air nozzle pipe is replaced with the corrugated pipe type air nozzle pipe, and an adhesion force between the outer lining of the air nozzle and the corrugated pipe or the spiral pipe is increased. The corrugated pipe type air nozzle pipe for the carbon rotary kiln has the advantages and the effects that the phenomenon of dropping of the outer lining caused by the difference between the internal and external temperatures of the air nozzle pipe is reduced; the corrugated pipe type air nozzle pipe for the carbon rotary kiln has the characteristics of simple structure, low cost, long service life, excellent performance and high operability.
Description
Technical field
The utility model relates in aluminium electrolytic industry, the carbon rotary kiln tuyere that loose shape carbon element material is calcined.
Background technology
The Thermal Equipment that carbon rotary kiln is mainly calcined loose shape carbon element material in aluminium electrolytic industry, is made up of cylindrical shell and kiln lining, rolling ring, supporting arrangement, transmission device, kiln head cover, kiln hood, burner, heat exchanger and feeding equipment etc.Carbon rotary kiln body and level are certain gradient, and whole kiln body is supported by riding wheel apparatus, and have the catch wheel device of controlling the upper and lower play of kiln body.
Rotary kiln Secondary Air be the place that arranges apart from kiln hood approximately 1/3 place for supplementary wind combustion-supporting in kiln, extraneous air is sent in kiln by blower fan, airduct and 6 tuyeres at a distance of 1 meter.
The size of Secondary Air air quantity has great significance to the production of rotary kiln, and can Secondary Air tuyere use for a long time, and whether air quantity is sufficient, will directly affect the quality of technology condition in kiln.At present secondary tuyere uses present situation to bring very large difficulty to production operation, the even running of unfavorable production, and the life-span on liner, the raising of casting yield, the optimization of process conditions have very large impact.
Existing secondary tuyere is mainly made up of tuyere pipe (steel pipe), anchoring piece reinforcement, tuyere outer lining (forming with inner liner of rotary kiln is integrated poured).
Because tuyere pipe outer lining surface temperature is up to 1300 DEG C of left and right, what in steel pipe, pass into is air at room temperature, and thermograde is large, and in rotary kiln construction, tuyere end angle refractory matter is smash and shaken unreally, causes tuyere outer lining to come off; Material washes away erosion tuyere for a long time, causes the tuyere life-span to reduce.At present, tuyere only has about 2 months average life, generally ftracture in end, peel off, closely melt steel pipe, when serious, must block with refractory matter from outside air inlet, the rotary kiln most of the time can only be moved under without Secondary Air state, volatile matter utilizes poor effect, increase the outer consumption for fuel, production operation, calcined coke quality and unit consumption of fuel have been caused to very adverse influence.
Similar phenomenon can adopt ceramic tuyere to substitute original heat resisting steel tuyere, and refractory protection is not broken in outside, and structure is similar to heat resisting steel tuyere.Due to ceramic resistance to elevated temperatures and thermal shock resistance good, its life-span can reach about half a year, but long-term use cost is higher, intensity is lower.
Utility model content
The utility model is to solve carbon rotary kiln secondary tuyere lower problem in service life in aluminium electrolytic industry, propose one and can realize rotary kiln post-blast, and have simple in structure, with low cost, life, function admirable, a kind of bellows-type tuyere pipe for carbon rotary kiln that operability is good.
The technical solution of the utility model is: a kind of bellows-type tuyere pipe for carbon rotary kiln, it is characterized in that, and described tuyere pipe is to be provided with steel corrugated pipe or helix tube along tuyere inside pipe wall, and is closely linked with tuyere outer lining.Substitute existing straight barrel type tuyere pipe, increase the adhesive force between tuyere outer lining and bellows or helix tube.
Advantage of the present utility model and effect
For a bellows-type tuyere pipe for carbon rotary kiln, described tuyere pipe is to be provided with steel corrugated pipe or helix tube along tuyere inside pipe wall, and is closely linked with tuyere outer lining.Substitute existing straight barrel type tuyere pipe, increase the adhesive force between tuyere outer lining and bellows or helix tube.Reduce the outer lining obscission that tuyere pipe internal-external temperature difference causes, and have simple in structure, with low cost, life, function admirable, the feature that operability is good.
Brief description of the drawings
Below in conjunction with the drawings and specific embodiments, the utility model is described in further detail.
Fig. 1 is a kind of structural representation of the bellows-type tuyere pipe for carbon rotary kiln.Wherein: 1 steel corrugated pipe or helix tube, 2 tuyere outer linings.
Detailed description of the invention
A kind of bellows-type tuyere pipe for carbon rotary kiln of the present utility model, described tuyere pipe is to be provided with steel corrugated pipe or helix tube 1 along tuyere inside pipe wall, and is closely linked with tuyere outer lining 2.Substitute existing straight barrel type tuyere pipe, increase the adhesive force between tuyere outer lining 2 and bellows or helix tube 1.Reduce the outer lining obscission that tuyere pipe internal-external temperature difference causes, and have simple in structure, with low cost, life, function admirable, the feature that operability is good.
Claims (1)
1. for a bellows-type tuyere pipe for carbon rotary kiln, it is characterized in that, described tuyere pipe is to be provided with steel corrugated pipe or helix tube (1) along tuyere inside pipe wall, and is closely linked with tuyere outer lining (2).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320826001.2U CN203719377U (en) | 2013-12-16 | 2013-12-16 | Corrugated pipe type air nozzle pipe for carbon rotary kiln |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201320826001.2U CN203719377U (en) | 2013-12-16 | 2013-12-16 | Corrugated pipe type air nozzle pipe for carbon rotary kiln |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203719377U true CN203719377U (en) | 2014-07-16 |
Family
ID=51158524
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201320826001.2U Expired - Fee Related CN203719377U (en) | 2013-12-16 | 2013-12-16 | Corrugated pipe type air nozzle pipe for carbon rotary kiln |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203719377U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236306A (en) * | 2014-09-28 | 2014-12-24 | 湖南创元新材料有限公司 | Rotary kiln blast nozzle |
-
2013
- 2013-12-16 CN CN201320826001.2U patent/CN203719377U/en not_active Expired - Fee Related
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104236306A (en) * | 2014-09-28 | 2014-12-24 | 湖南创元新材料有限公司 | Rotary kiln blast nozzle |
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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: 20140716 Termination date: 20181216 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |