CN204874581U - Multitube array distribution's rotation reduced iron kiln device - Google Patents
Multitube array distribution's rotation reduced iron kiln device Download PDFInfo
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- CN204874581U CN204874581U CN201520647469.4U CN201520647469U CN204874581U CN 204874581 U CN204874581 U CN 204874581U CN 201520647469 U CN201520647469 U CN 201520647469U CN 204874581 U CN204874581 U CN 204874581U
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- backing ring
- high temperature
- reduced iron
- return bend
- temperature section
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Abstract
The utility model belongs to the metallurgical equipment field especially relates to a multitube array distribution's rotation reduced iron kiln device. The utility model discloses a continuous stability of high -temperature region temperature has been realized to the coal -based reduced iron kiln device of the continuous external heating muffle formula of high temperature section entire body, accords with the strict demand of reduced iron to the reducing condition, adopting the heating of muffle formula, making back among the rotating -barrel reducing atmosphere ten minutes abundant, volatile coal gas full recovery utilizes, and the waste heat obtains make full use of, makes the quilt return to the original condition or shape the reduction the desired temperature greatly reduced of material, and reduction speed, percent reduction all has the improvement, has accomplished the energy saving and emission reduction carbon drop. This device returns rotating -barrel by (1-6) (1-6) root and is the array distribution, but year ten thousand tons-10.0 ten thousand tons of iron ores of restoration process 1.0 can be a production line by an unit, also can increase synthetic production line of a plurality of unique tuples at length direction, but the iron ore of the most extensive year restoration process hundreds of thousands ton.
Description
Technical field
The utility model belongs to field of metallurgical equipment, particularly relates to the rotary type reduced iron kiln device of a kind of multi-tube array distribution.
Background technology
China is the large output of steel state of the first in the world, and within 2014, output of steel reaches 11.26 hundred million tons, and need steel scrap (containing reduced iron) more than 2,800 ten thousand tons year, wherein reduced iron demand is 2,000 ten thousand tons.China's year import reduced iron 3,000,000 tons, and reduced iron (sponge iron) annual production is only 500,000 tons, less than 1.0% of world's direct-reduced iron ultimate production, belongs to one of minimum country of world's reduced iron output.Along with the environmental requirement of national steel industry energy-saving and emission-reduction carbon drop is more and more stricter, require to improve the excellent steel ratio of electric furnace further, therefore, reduced iron breach can increase further.
China is the country that a poor iron ore deposit enriches, and low poor slow-witted ore deposit accounts for iron ore deposit more than 96%, but also needs the high-grad iron ore deposit from external import 800,000,000 tons every year, and import dependency degree is 55%.Country puts into effect relevant policies, encourage growth direct-reduced iron and the technological development of Fei Jiao iron-smelting process and application.Improve the seed output and quality of reduced iron and develop a large amount of low poor slow-witted ore deposit of China and iron-containing waste, making its resource utilization, being one and changing extremely urgent cause.
China's reduced iron kiln has multiple, wherein the kiln of direct-reduced iron, there is the various defects such as operation energy consumption is high, operation is difficult, limits the development that investor marches reduced iron industry.
China reduced iron field, is that private enterprise is investing money in developing substantially, there is investment risk, and lacks the high-caliber technician of operation.Therefore, reduced iron industry, thirsts for finding out that a kind of output investment ratio is little, kiln device structure is simple, mechanization degree is high, reducing atmosphere is strong, workable, production capacity elasticity is large, energy consumption is low, adaptability to raw material is strong, the direct-reduced iron kiln device of energy-conserving and environment-protective carbon drop and Technology.
Utility model content
The deficiency that the utility model exists for above-mentioned prior art, the rotary type reduced iron kiln device providing a kind of multi-tube array to distribute.
The technical scheme that the utility model solves the problems of the technologies described above is as follows: a kind of rotary type reduced iron kiln device of multi-tube array distribution, comprise process furnace, return bend, feeding device, drive unit and backing ring device, described process furnace is piled up by process furnace furnace wall and is formed, be reheating furnace in described process furnace, its special character is, described backing ring device comprises head holder coil apparatus, middle part backing ring device and afterbody backing ring device, described return bend comprises high temperature section and cooling section from front to back, described high temperature section is placed in described reheating furnace, described process furnace is stretched out in described high temperature section front end, described high temperature section front end, described head holder coil apparatus is supported on successively with cooling section in the middle part of high temperature section, middle part backing ring device and afterbody backing ring device on, described feeding device is connected mutually with described high temperature section front end, and described cooling section rear end is provided with discharge port, described return bend is provided with many, and many described return bends are array distribution,
Described process furnace both sides are provided with burner group, and described burner group comprises horizontally disposed multiple burner, and described burner is externally connected to combustion air pipeline and gas line;
The heating-furnace of side, described high temperature section front end is provided with through coal gas collecting chamber within the walls, described coal gas collecting chamber is communicated with a coal-gas recovering house steward, coal gas seal closure is all set with outside the high temperature section front end of many described return bends, described coal gas seal closure top is communicated with coal-gas recovering arm, and described coal-gas recovering arm all passes in coal gas collecting chamber.
On the basis of technique scheme, the utility model can also do following improvement.
Further, the axis of described return bend and sea line angle are 0.5 ° ~ 5.0 °, and described high temperature section is higher than cooling section.
The beneficial effect of above-mentioned further scheme is adopted to be, be obliquely installed, the semi-melting state reduction iron product in return bend can be made slowly dirty by self gravitation, the coal gas produced in reduction process and tail gas float, from coal-gas recovering, house steward discharges collection, realizes preheating recycling.
Further, described backing ring device comprises backing ring, backing ring gusset, supporting seat and backing drum, and described backing ring gusset is located at return bend periphery, and it is peripheral that described backing ring is located at described backing ring gusset, described backing drum is located on described supporting seat, and is supported on described backing ring bottom.
The beneficial effect of above-mentioned further scheme is adopted to be return bend is played to the effect of firm support.
Further, backing ring device knee wall is provided with between the middle part backing ring device in described file direction.
The beneficial effect of above-mentioned further scheme is adopted to be middle part backing ring device is played to the effect of firm support.
Further, described feeding device comprises pelletizing loading hopper, reductive agent loading hopper and worm conveyor, and the outlet of described worm conveyor reaches in return bend.
Further, described drive unit comprises double chain wheel, chain drive-belt and drive-motor, described double chain wheel is sleeved on outside the backing ring of described head holder coil apparatus, described chain drive-belt active card is connected on the double chain wheel outside each horizontally-arranged return bend, and described chain drive-belt and described double chain wheel rely on drive-motor to drive.
Adopt the beneficial effect of above-mentioned further scheme to be that the return bend that drive-motor drives each horizontally-arranged does turning motion simultaneously, the material in return bend is fully reacted, prevents between pelletizing inter-adhesive, ensure the stability of the indices quality of reduzate.
Further, the cooling section of multiple described return bend is sleeved on and gathers materials in seal closure, described in gather materials bottom seal closure and be communicated to hot scraper conveyor.
The beneficial effect of above-mentioned further scheme is adopted to be that the product be reduced is discharged from the discharge port of each return bend, concentrates on and gathers materials in seal closure, collect and enter hot scraper conveyor.
Further, the backing ring gusset of described return bend, middle part backing ring device, backing ring and backing drum are the high temperature material that working temperature reaches 1050 ~ 1350 DEG C.
The beneficial effect of above-mentioned further scheme is adopted to be avoid the too high damage caused equipment of return bend pipe surface temperature because of high temperature section.
The beneficial effects of the utility model are:
1, the utility model adopts high temperature section entire body continuous external heat flame-insulating type coal based ferrum redactum kiln device, achieves the continous-stable of high-temperature zone temperature, has met the strict demand of reduced iron to reductive condition; Employing flame-insulating type heats, and make reducing atmosphere in return bend very abundant, the coal gas of volatilization is all recycled, waste heat is fully used, make that the reduction of reduced material is temperature required to be reduced greatly, and reduction rate, reduction ratio are improved, and have accomplished energy-saving and emission-reduction carbon drop.
2, this device can adopt coking coal or mill coal as reduction coal, is suitable for reduction all ferrous materials such as high grade iron breeze or low-grade difficult ore dressing, complex ore, iron-containing waste, reduces to obtain higher-grade reduced iron, and reducing process is flexible.
3, this device is that array distributes by (1 ~ 6) × (1 ~ 6) root return bend, year reducible process 1.0 ten thousand tons ~ 10.0 ten thousand tons of iron ores, can a unit be a production line, also can increase multiple unit combination at length direction and become a production line, the iron ore of hundreds of thousands of ton can be processed maximum-norm year.
4, the utility model be a kind of invest less, adaptability to raw material strong, be reduced acid pellet need not sinter, kiln device structure is simple, reducing atmosphere is strong, workable in reduction tube, energy consumption is low, energy-conserving and environment-protective carbon drop, equipment operation failure rate are lower and be the direct-reduced iron kiln device of array distribution by multiple return bend.
Accompanying drawing explanation
Fig. 1 is structural representation of the present utility model;
Fig. 2 is the A-A direction sectional schematic diagram of Fig. 1;
Fig. 3 is the B-B direction sectional schematic diagram of Fig. 1;
Fig. 4 is the structural representation of return bend;
Fig. 5 is the structure for amplifying schematic diagram at M place in Fig. 4;
Fig. 6 is the structure for amplifying schematic diagram at N place in Fig. 4;
Fig. 7 is the structural representation of backing ring device;
In figure, 1, process furnace; 2, return bend; 3, process furnace furnace wall; 4, reheating furnace; 5, head holder coil apparatus; 6, middle part backing ring device; 7, afterbody backing ring device; 8, high temperature section; 9, cooling section; 10, discharge port; 11, burner group; 12, combustion air pipeline; 13, gas line; 14, coal gas collecting chamber; 15, coal-gas recovering house steward; 16, coal gas seal closure; 17, coal-gas recovering arm; 18, backing ring; 19, backing ring gusset; 20, supporting seat; 21, backing drum; 22, backing ring device knee wall; 23, pelletizing loading hopper; 24, reductive agent loading hopper; 25, worm conveyor; 26, double chain wheel; 27, chain drive-belt; 28, drive-motor; 29, gather materials seal closure; 30, hot scraper conveyor.
Embodiment
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.
A kind of rotary type reduced iron kiln device of multi-tube array distribution, comprise process furnace 1, return bend 2, feeding device, drive unit and backing ring device, described process furnace 1 is piled up by process furnace furnace wall 3 and is formed, be reheating furnace 4 in described process furnace 1, its special character is, described backing ring device comprises head holder coil apparatus 5, middle part backing ring device 6 and afterbody backing ring device 7, described return bend 2 comprises high temperature section 8 and cooling section 9 from front to back, described high temperature section 8 is placed in described reheating furnace 4, before described high temperature section, 8 ends stretch out described process furnace 1, described high temperature section front end, described head holder coil apparatus 5 is supported on successively with cooling section 9 in the middle part of high temperature section, middle part backing ring device 6 and afterbody backing ring device 7 on, described feeding device is connected mutually with described high temperature section 8 front end, and described cooling section 9 rear end is provided with discharge port 10, described return bend 2 is provided with many, many described return bend 2 distributions in array,
Described process furnace 1 both sides are provided with burner group 11, and described burner group comprises horizontally disposed multiple burner, and described burner is externally connected to combustion air pipeline 12 and gas line 13;
Through coal gas collecting chamber 14 is provided with in the process furnace furnace wall 3 of side, described high temperature section 8 front end, described coal gas collecting chamber 14 is communicated with a coal-gas recovering house steward 15, coal gas seal closure 16 is all set with outside high temperature section 8 front end of many described return bends 2, described coal gas seal closure 16 top is communicated with coal-gas recovering arm 17, and described coal-gas recovering arm 17 all passes in coal gas collecting chamber 14;
The axis of described return bend 2 and sea line angle are 0.5 ° ~ 5.0 °, and described high temperature section 8 is higher than cooling section 9;
Described backing ring device comprises backing ring 18, backing ring gusset 19, supporting seat 20 and backing drum 21, it is peripheral that described backing ring gusset 19 is located at return bend 2, it is peripheral that described backing ring 18 is located at described backing ring gusset 19, and described backing drum 21 is located on described supporting seat 20, and is supported on described backing ring 18 bottom;
Backing ring device knee wall 22 is provided with between the middle part backing ring device 6 in described file direction;
Described feeding device comprises pelletizing loading hopper 23, reductive agent loading hopper 24 and worm conveyor 25, and the outlet of described worm conveyor 25 reaches in return bend 2;
Described drive unit comprises double chain wheel 26, chain drive-belt 27 and drive-motor 28, described double chain wheel 26 is sleeved on outside the backing ring 18 of described head holder coil apparatus 5, described chain drive-belt 27 active card is connected on the double chain wheel 26 outside each horizontally-arranged return bend 2, and described chain drive-belt 27 relies on drive-motor 28 to drive with described double chain wheel 26;
The cooling section 9 of multiple described return bend 2 is sleeved on and gathers materials in seal closure 29, described in gather materials bottom seal closure 29 and be communicated to hot scraper conveyor 30.
The utility model uses like this, pelletizing and reductive agent are entered return bend by loading hopper under the drive of worm conveyor, by combustion air pipeline and gas line, combustion air and coal gas are passed in process furnace, the return bend that double chain wheel and chain drive-belt drive each horizontally-arranged under drive-motor effect rotates simultaneously, 1030-1090 DEG C is heated in reheating furnace, reduced material carries out fully in return bend, the degree of depth, fast restore, reduzate dependence self gravitation is expelled to from discharge port and gathers materials in seal closure, is pooled on hot scraper conveyor; A large amount of high PG that reductive agent volatilizes are along the eminence direction of return bend, coal gas collecting chamber is entered from coal-gas recovering arm, coal gas collective in coal gas collecting chamber discharges from coal-gas recovering house steward, after dedusting, cooling, detar, send into gas line, and with addition of the combustion air of combustion air pipeline, burnt by burner group, for process furnace heating, reduce energy consumption.
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. the rotary type reduced iron kiln device of a multi-tube array distribution, comprise process furnace, return bend, feeding device, drive unit and backing ring device, described process furnace is piled up by process furnace furnace wall and is formed, be reheating furnace in described process furnace, it is characterized in that, described backing ring device comprises head holder coil apparatus, middle part backing ring device and afterbody backing ring device, described return bend comprises high temperature section and cooling section from front to back, described high temperature section is placed in described reheating furnace, described process furnace is stretched out in described high temperature section front end, described high temperature section front end, described head holder coil apparatus is supported on successively with cooling section in the middle part of high temperature section, middle part backing ring device and afterbody backing ring device on, described feeding device is connected mutually with described high temperature section front end, and described cooling section rear end is provided with discharge port, described return bend is provided with many, and many described return bends are array distribution,
Described process furnace both sides are provided with burner group, and described burner group comprises horizontally disposed multiple burner, and described burner is externally connected to combustion air pipeline and gas line;
The heating-furnace of side, described high temperature section front end is provided with through coal gas collecting chamber within the walls, described coal gas collecting chamber is communicated with a coal-gas recovering house steward, coal gas seal closure is all set with outside the high temperature section front end of many described return bends, described coal gas seal closure top is communicated with coal-gas recovering arm, and described coal-gas recovering arm all passes in coal gas collecting chamber;
The axis of described return bend and sea line angle are 0.5 ° ~ 5.0 °, and described high temperature section is higher than cooling section.
2. rotary type reduced iron kiln device according to claim 1, it is characterized in that, described backing ring device comprises backing ring, backing ring gusset, supporting seat and backing drum, described backing ring gusset is located at return bend periphery, it is peripheral that described backing ring is located at described backing ring gusset, described backing drum is located on described supporting seat, and is supported on described backing ring bottom.
3. rotary type reduced iron kiln device according to claim 1, is characterized in that, is provided with backing ring device knee wall between the middle part backing ring device in described file direction.
4. rotary type reduced iron kiln device according to claim 1, is characterized in that, described feeding device comprises pelletizing loading hopper, reductive agent loading hopper and worm conveyor, and the outlet of described worm conveyor reaches in return bend.
5. rotary type reduced iron kiln device according to claim 1, it is characterized in that, described drive unit comprises double chain wheel, chain drive-belt and drive-motor, described double chain wheel is sleeved on outside the backing ring of described head holder coil apparatus, described chain drive-belt active card is connected on the double chain wheel outside each horizontally-arranged return bend, and described chain drive-belt and described double chain wheel rely on drive-motor to drive.
6. rotary type reduced iron kiln device according to claim 1, is characterized in that, the cooling section of multiple described return bend is sleeved on and gathers materials in seal closure, described in gather materials bottom seal closure and be communicated to hot scraper conveyor.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647469.4U CN204874581U (en) | 2015-08-25 | 2015-08-25 | Multitube array distribution's rotation reduced iron kiln device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201520647469.4U CN204874581U (en) | 2015-08-25 | 2015-08-25 | Multitube array distribution's rotation reduced iron kiln device |
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| CN204874581U true CN204874581U (en) | 2015-12-16 |
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| CN201520647469.4U Expired - Fee Related CN204874581U (en) | 2015-08-25 | 2015-08-25 | Multitube array distribution's rotation reduced iron kiln device |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525066A (en) * | 2017-09-18 | 2017-12-29 | 中国矿业大学 | A kind of high-power array low concentration gas pulsating combustion method and device |
| CN111334633A (en) * | 2020-04-29 | 2020-06-26 | 王安新 | External heating type vertical rotary kiln |
-
2015
- 2015-08-25 CN CN201520647469.4U patent/CN204874581U/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN107525066A (en) * | 2017-09-18 | 2017-12-29 | 中国矿业大学 | A kind of high-power array low concentration gas pulsating combustion method and device |
| CN107525066B (en) * | 2017-09-18 | 2019-01-01 | 中国矿业大学 | A kind of high-power array low concentration gas pulsating combustion method and device |
| CN111334633A (en) * | 2020-04-29 | 2020-06-26 | 王安新 | External heating type vertical rotary kiln |
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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 |
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| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20151216 Termination date: 20200825 |
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| CF01 | Termination of patent right due to non-payment of annual fee |