CN204902563U - Rotary kiln of even air feed of multiple hole heating - Google Patents
Rotary kiln of even air feed of multiple hole heating Download PDFInfo
- Publication number
- CN204902563U CN204902563U CN201520647443.XU CN201520647443U CN204902563U CN 204902563 U CN204902563 U CN 204902563U CN 201520647443 U CN201520647443 U CN 201520647443U CN 204902563 U CN204902563 U CN 204902563U
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- rotary kiln
- brick
- lining brick
- furnace lining
- metal cylinder
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- Furnace Housings, Linings, Walls, And Ceilings (AREA)
Abstract
The utility model belongs to the metallurgical equipment field especially relates to a rotary kiln of even air feed of multiple hole heating, the novel nipple rectifier comprises a cylindrical shel, the barrel includes the middle part conversion zone middle part conversion zone outer room is at a distance from being equipped with multichannel air inlet ring canal, multichannel the air inlet ring canal passes through supply duct way and wind regime intercommunication, there is branch's tuber pipe along radial equipartition on the air inlet ring canal, branch's tuber pipe passes barrel and rotary kiln cavity intercommunication. The utility model discloses an air inlet furnace wall brick, circulation furnace wall brick and a plurality of radial ventilation hole, even air feed heats in realizing giving the rotary kiln cavity, guarantee that the air feed is evenly stable in the rotary kiln everywhere, the difference in temperature is reduced to 1.5 DEG C, no ring formation phenomenon in this rotary kiln, has a reasonable structure, long service lifetime, the installation is firm, and refractory brick is hollow structure, conduction temperature greatly reduced, rotary kiln metal cylinder wall thickness reduces greatly, thereby alleviate rotary kiln weight, reduce rotatory fascinating, and reduce mechanical power.
Description
Technical field
The utility model belongs to field of metallurgical equipment, particularly relates to the rotary kiln of the even air feed heating of a kind of porous type.
Background technology
In recent years, the technique for applying technology of DRI rotary kiln is ripe gradually, and the application of rotary kiln device is also more and more extensive.
The backup lining brick of tradition rotary kiln, the solid refractory material laying of general employing forms, or adopts part refractory brick and part in bulk castable overlap joint to form.The design and installation of this backup lining brick, rotary kiln furnace shell conducts, radiation temperature is higher, general at 100 DEG C ~ more than 200 DEG C, cause more energy dissipation, and due to rotary kiln be generally coal powder injection or jet, oil spout, along with combustion air, therefore, the temperature in rotary kiln is difficult to control, and has had a strong impact on the service life of rotary kiln furnace lining, there will be ring formation of rotary kiln phenomenon simultaneously, make the operation of rotary kiln be difficult to control.
It is after the coal Homogeneous phase mixing of 0 ~ 30mm that reduced iron production process is generally acid pellet (granular iron ore) with fineness, enter rotary kiln and carry out roasting and reduction, rotary kiln heats, adopt the spray gun { coal powder injection (the loose shape coal of coal dust or 0 ~ 30mm) of kiln hood or kiln tail, jet (blast furnace gas, producer gas, coke-stove gas, coal gas of converter, liquefied gas, the fuel gas such as natural gas), oil spout (diesel oil, kerosene etc.) }, and along with winding-up combustion air, winding-up burning in rotary kiln, for rotary kiln heats, the distance of the winding-up of flame is generally 10 ~ 50m, if adopt the rotary kiln that 80 ~ 120m is long, rotary kiln temperature deviation is more than ± 120 DEG C, temperature in kiln is controlled be difficult to, also technological requirement cannot be met.
Utility model content
The deficiency that the utility model exists for above-mentioned prior art, provides the rotary kiln of the even air feed heating of a kind of porous type.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: the rotary kiln of the even air feed heating of a kind of porous type, comprise cylindrical shell, described cylindrical shell comprises middle part conversion zone, its special character is, outside the conversion zone of described middle part, be interval with multiple tracks air intake endless tube, described in multiple tracks, air intake endless tube is communicated with wind regime by air supply line; Described air intake endless tube is radially evenly equipped with a point branch wind pipe, and described point of branch wind pipe is through described cylindrical shell and rotary kiln chamber.
Further, described cylindrical shell comprises metal cylinder body wall and is embedded in the flame retardant coating inside described metal cylinder body wall, and described flame retardant coating comprises the refractory brick relying on female mouth and rim of the mouth mutually to overlap, and described refractory brick comprises circulation backup lining brick, blast furnace lining brick and Sealing furnace lining brick; Described circulation backup lining brick inside is provided with cross blowhole, described blast furnace lining brick is from outer to inner provided with the radial intake stack and cross blowhole that are interconnected successively, is provided with the fresh air inlet be communicated with radial intake stack between described blast furnace lining brick with described metal cylinder body wall; Described cross blowhole is formed by circumferential ventilating hole channel and axial ventilation duct, and multiple described circumferential ventilating hole channel forms annular passage, and the inner side of described annular passage is communicated with the radial air openings in brick ridge interval; Described Sealing furnace lining brick is solid brick body, and described Sealing furnace lining brick is provided with polylith, is disposed in described annular passage; Described point of branch wind pipe is by fresh air inlet and blast furnace lining brick and rotary kiln chamber, and described point of branch wind pipe is provided with a point branch wind pipe valve.
Further, be provided with main valve between described air intake endless tube and described wind regime, described air supply line is provided with air supply line valve.
Further, described circulation backup lining brick, blast furnace lining brick and Sealing furnace lining brick are fixedly embedded in inside described metal cylinder body wall by refractory brick support and embedded iron.
Further, described cross blowhole is fixed in annular passage by cross blowhole support.
Further, alumina silicate fibre hardboard is provided with between described circulation backup lining brick and described metal cylinder body wall.
Further, described wind regime is blower fan.
The beneficial effects of the utility model are:
1, the utility model is by blast furnace lining brick, circulation backup lining brick and some radial air openings, realizes to air feed heating even in rotary kiln chamber; Annular passage is separated into several sections by polylith Sealing furnace lining brick simultaneously, a point branch wind pipe valve is controlled by the time relay, make point branch wind pipe valve open below rotation to rotary kiln, to the material air feed be reduced, point branch wind pipe valve closing of whiz rotary kiln bottom, so move in circles work, ensure that in rotary kiln, air feed is uniform and stable everywhere, and the temperature difference is contracted to ± and 1.5 DEG C.
2, the less material of granularity or coal dust is easily entered in brick ridge interval of the present utility model, wind blows out from radial air openings, hot blast and coal carry out combustion reaction, due to wind supply quantity and pressure controllable, so the temperature of reaction also can control, impel whole material top to be full of sufficient CO volatilization, thus ensure that in whole rotary kiln, reducing atmosphere is fully with even.
3, the utility model is by the network of circulation backup lining brick, blast furnace lining brick and alumina silicate fibre hardboard, the heat that rotary kiln chamber interior derives is exchanged, decrease the temperature that refractory brick is transmitted to metal cylinder body wall, thus make rotary kiln metal cylinder wall temperature be less than 50 DEG C; If there is coal dust to fall in network by radial air openings, can be blown when air feed, the coal particle that can not be blown by volatiling reaction for provide in rotary kiln heat CO and O
2, while the heat exchange of each network air feed, also can reduce the heat conduction amount of refractory brick, play insulation and heat-blocking action.
4, rotary kiln of the present utility model is interior without ring formation phenomenon, reasonable in design, long service life, install firm, and refractory brick is hollow structure, transition temperature reduces greatly, rotary kiln metal cylinder wall thickness reduces greatly, thus alleviate rotary kiln weight, reduce rotation and fascinate, and reduce mechanical output.
Accompanying drawing explanation
Fig. 1 is longitudinal profile schematic diagram of the present utility model;
Fig. 2 is the A-A direction sectional schematic diagram of Fig. 1;
Fig. 3 is B place enlarged diagram in Fig. 2;
Fig. 4 is the C-C direction sectional schematic diagram of Fig. 1;
Fig. 5 is D place enlarged diagram in Fig. 4;
Fig. 6 is the structural representation of blast furnace lining brick;
Fig. 7 is the right view of Fig. 6;
Fig. 8 is the upward view of Fig. 6;
Fig. 9 is the top view of Fig. 6;
Figure 10 be in Fig. 6 E-E to profile;
Figure 11 is the structural representation of circulation backup lining brick;
Figure 12 is the right view of Figure 11;
Figure 13 is the upward view of Figure 11;
Figure 14 is the top view of Figure 11;
Figure 15 be in Figure 11 F-F to profile;
In figure, 1, cylindrical shell; 2, middle part conversion zone; 3, air intake endless tube; 4, air supply line; 5, wind regime; 6, branch wind pipe is divided; 7, metal cylinder body wall; 8, circulation backup lining brick; 9, blast furnace lining brick; 10, Sealing furnace lining brick; 11, cross blowhole; 12, radial intake stack; 13, fresh air inlet; 14, circumferential ventilating hole channel; 15, axial ventilation duct; 16, annular passage; 17, brick ridge; 18, radial air openings; 19, branch wind pipe valve is divided; 20, main valve; 21, air supply line valve; 22, refractory brick support; 23, embedded iron; 24, cross blowhole support; 25, alumina silicate fibre hardboard; 26, female mouth; 27, rim of the mouth.
Detailed description of the invention
Be described principle of the present utility model and feature below in conjunction with example, example, only for explaining the utility model, is not intended to limit scope of the present utility model.
The rotary kiln of the even air feed heating of a kind of porous type, comprise cylindrical shell 1, described cylindrical shell 1 comprises middle part conversion zone 2, and its special character is, outside described middle part conversion zone 2, be interval with multiple tracks air intake endless tube 3, described in multiple tracks, air intake endless tube 3 is communicated with wind regime 5 by air supply line 4; Described air intake endless tube 3 is radially evenly equipped with point branch wind pipe 6, and described point of branch wind pipe 6 is through described cylindrical shell 1 and rotary kiln chamber;
Described cylindrical shell 1 comprises metal cylinder body wall 7 and is embedded in the flame retardant coating inside described metal cylinder body wall 7, described flame retardant coating comprises the refractory brick relying on female mouth 26 and rim of the mouth 27 mutually to overlap, and described refractory brick comprises circulation backup lining brick 8, blast furnace lining brick 9 and Sealing furnace lining brick 10; Described circulation backup lining brick 8 inside is provided with cross blowhole 11, described blast furnace lining brick 9 is from outer to inner provided with the radial intake stack 12 and cross blowhole 11 that are interconnected successively, is provided with the fresh air inlet 13 be communicated with radial intake stack 12 between described blast furnace lining brick 9 with described metal cylinder body wall 7; Described cross blowhole 11 is formed by circumferential ventilating hole channel 14 and axial ventilation duct 15, and multiple described circumferential ventilating hole channel 14 forms annular passage 16, and the inner side of described annular passage 16 is communicated with the radial air openings 18 in brick ridge 17 interval; Described Sealing furnace lining brick 10 is solid brick body, and described Sealing furnace lining brick 10 is provided with polylith, is disposed in described annular passage 16; Described point of branch wind pipe 6 is by fresh air inlet 13 and blast furnace lining brick 9 and rotary kiln chamber, and described point of branch wind pipe 6 is provided with a point branch wind pipe valve 19;
Be provided with main valve 20 between described air intake endless tube 3 and described wind regime 5, described air supply line 4 is provided with air supply line valve 21;
Described circulation backup lining brick 8, blast furnace lining brick 9 and Sealing furnace lining brick 10 are fixedly embedded in inside described metal cylinder body wall 7 by refractory brick support 22 and embedded iron 23;
Described cross blowhole 11 is fixed in annular passage 16 by cross blowhole support 24;
Alumina silicate fibre hardboard 25 is provided with between described circulation backup lining brick 8 and described metal cylinder body wall 7;
Described wind regime 5 is blower fan, can adopt conventional slip ring power supply device fan supply power.
In Fig. 6 and Figure 11, α is chamfering, is generally the circular arc chamfering of ￠ 10 ~ 30mm; ￠ β is angle, can carry out the angle calculating its angle according to the quantity of the diameter of cylinder of rotary kiln and every block fragment of brick.
The utility model uses like this, material and coal dust pass into middle part conversion zone, cylinder of rotary kiln rotates, open main valve and air supply line valve, blower fan is to air supplying ring pipe air feed, wind enters air supply line, a point branch wind pipe valve is controlled by the time relay, make point branch wind pipe valve open below rotation to rotary kiln, wind is by a point branch wind pipe, fresh air inlet and radial intake stack enter cross blowhole, combustion air is full of the annular passage between two adjacent Sealing furnace lining bricks, often prop up a longitudinally point branch wind pipe valve and be equipped with the time relay, when a point branch wind pipe for rotary kiln goes to below, divide branch wind pipe valve open, to the material air feed be reduced, when a point branch wind pipe for rotary kiln goes to top, when a point branch wind pipe leaves reduced material, point branch wind pipe valve closing, so move in circles work.
The foregoing is only preferred embodiment of the present utility model, not in order to limit the utility model, all within spirit of the present utility model and principle, any amendment done, equivalent replacement, improvement etc., all should be included within protection domain of the present utility model.
Claims (6)
1. a rotary kiln for the even air feed heating of porous type, comprise cylindrical shell, described cylindrical shell comprises middle part conversion zone, and it is characterized in that, outside the conversion zone of described middle part, be interval with multiple tracks air intake endless tube, described in multiple tracks, air intake endless tube is communicated with wind regime by air supply line; Described air intake endless tube is radially evenly equipped with a point branch wind pipe, and described point of branch wind pipe is through described cylindrical shell and rotary kiln chamber.
2. rotary kiln according to claim 1, it is characterized in that, described cylindrical shell comprises metal cylinder body wall and is embedded in the flame retardant coating inside described metal cylinder body wall, described flame retardant coating comprises the refractory brick relying on female mouth and rim of the mouth mutually to overlap, and described refractory brick comprises circulation backup lining brick, blast furnace lining brick and Sealing furnace lining brick; Described circulation backup lining brick inside is provided with cross blowhole, described blast furnace lining brick is from outer to inner provided with the radial intake stack and cross blowhole that are interconnected successively, is provided with the fresh air inlet be communicated with radial intake stack between described blast furnace lining brick with described metal cylinder body wall; Described cross blowhole is formed by circumferential ventilating hole channel and axial ventilation duct, and multiple described circumferential ventilating hole channel forms annular passage, and the inner side of described annular passage is communicated with the radial air openings in brick ridge interval; Described Sealing furnace lining brick is solid brick body, and described Sealing furnace lining brick is provided with polylith, is disposed in described annular passage; Described point of branch wind pipe is by fresh air inlet and blast furnace lining brick and rotary kiln chamber, and described point of branch wind pipe is provided with a point branch wind pipe valve.
3. rotary kiln according to claim 1 and 2, is characterized in that, be provided with main valve between described air intake endless tube and described wind regime, described air supply line is provided with air supply line valve.
4. rotary kiln according to claim 2, is characterized in that, described circulation backup lining brick, blast furnace lining brick and Sealing furnace lining brick are fixedly embedded in inside described metal cylinder body wall by refractory brick support and embedded iron.
5. rotary kiln according to claim 2, is characterized in that, described cross blowhole is fixed in annular passage by cross blowhole support.
6. rotary kiln according to claim 2, is characterized in that, is provided with alumina silicate fibre hardboard between described circulation backup lining brick and described metal cylinder body wall.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647443.XU CN204902563U (en) | 2015-08-25 | 2015-08-25 | Rotary kiln of even air feed of multiple hole heating |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647443.XU CN204902563U (en) | 2015-08-25 | 2015-08-25 | Rotary kiln of even air feed of multiple hole heating |
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| CN204902563U true CN204902563U (en) | 2015-12-23 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201520647443.XU Expired - Fee Related CN204902563U (en) | 2015-08-25 | 2015-08-25 | Rotary kiln of even air feed of multiple hole heating |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167842A (en) * | 2016-08-30 | 2016-11-30 | 江苏太湖锅炉股份有限公司 | Chiller for solid thermal carriers bootstrap system |
| CN109945204A (en) * | 2019-03-26 | 2019-06-28 | 江苏宜裕环保科技有限公司 | A kind of rotary kiln device for mending wind using segmentation |
| CN110788000A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN110787999A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN110788002A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln with winnowing removal device |
| CN113237327A (en) * | 2021-04-29 | 2021-08-10 | 安徽省泽乾冶金科技有限公司 | Air supply device of rotary kiln |
-
2015
- 2015-08-25 CN CN201520647443.XU patent/CN204902563U/en not_active Expired - Fee Related
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106167842A (en) * | 2016-08-30 | 2016-11-30 | 江苏太湖锅炉股份有限公司 | Chiller for solid thermal carriers bootstrap system |
| CN106167842B (en) * | 2016-08-30 | 2019-03-22 | 江苏太湖锅炉股份有限公司 | Cooling device for solid thermal carriers afterheat utilizing system |
| CN109945204A (en) * | 2019-03-26 | 2019-06-28 | 江苏宜裕环保科技有限公司 | A kind of rotary kiln device for mending wind using segmentation |
| CN110788000A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN110787999A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln |
| CN110788002A (en) * | 2019-11-04 | 2020-02-14 | 中冶长天国际工程有限责任公司 | Winnowing removal device for fine particle dust in lime kiln, control method and lime kiln with winnowing removal device |
| CN113237327A (en) * | 2021-04-29 | 2021-08-10 | 安徽省泽乾冶金科技有限公司 | Air supply device of rotary kiln |
| CN113237327B (en) * | 2021-04-29 | 2023-10-20 | 安徽省泽乾冶金科技有限公司 | Rotary kiln air supply device |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20190128 Address after: 362000 Building 201 of Century Dynasty A, Tian'an Road, Fengze District, Quanzhou City, Fujian Province Patentee after: Quanzhou Huanfeng Metallurgical Technology Co., Ltd. Address before: Room 908, East Tower, Venture Building, Science and Technology Avenue, Yantai High-tech Zone, Shandong Province Patentee before: Tang Zhusheng |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151223 Termination date: 20200825 |
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| CF01 | Termination of patent right due to non-payment of annual fee |