CN108642274B - High-temperature pellet cooling device - Google Patents
High-temperature pellet cooling device Download PDFInfo
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- CN108642274B CN108642274B CN201810903675.5A CN201810903675A CN108642274B CN 108642274 B CN108642274 B CN 108642274B CN 201810903675 A CN201810903675 A CN 201810903675A CN 108642274 B CN108642274 B CN 108642274B
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- spiral discharging
- cooling device
- discharging device
- pipe
- water
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22B—PRODUCTION AND REFINING OF METALS; PRETREATMENT OF RAW MATERIALS
- C22B1/00—Preliminary treatment of ores or scrap
- C22B1/26—Cooling of roasted, sintered, or agglomerated ores
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- Chemical & Material Sciences (AREA)
- Environmental & Geological Engineering (AREA)
- General Life Sciences & Earth Sciences (AREA)
- Geochemistry & Mineralogy (AREA)
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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Processing Of Solid Wastes (AREA)
- Waste-Gas Treatment And Other Accessory Devices For Furnaces (AREA)
Abstract
The invention discloses a high-temperature pellet cooling device, which comprises a spiral discharging device, a steam cooling device and a water discharging device, wherein the problems of cooling, discharging and steam recovery of high-temperature pellets are systematically solved, the problems of large energy consumption and easy crushing of the pellets in an indirect cooling mode are avoided, and the problems of steam unstructured discharge and deposition in a slag pool water quenching mode are also solved; the equipment is simple and easy to control, the production efficiency is high, and the application prospect is wide.
Description
Technical Field
The invention belongs to the field of metallurgical equipment, and particularly relates to a high-temperature pellet cooling device.
Background
The cooling of high temperature pellet is extremely important to the subsequent treatment and the utilization of pellet, and when high temperature pellet needs broken magnetic separation, indirect cooling mode is in addition a large amount of resources such as consumption water, nitrogen gas, and the like, and pellet intensity is still higher, can bring difficulty for broken magnetic separation, if adopt slag bath water quenching cooling mode, on the one hand can make the unorganized emission of a large amount of steam, waste water resource, on the other hand can bring siltation in the slag bath again, leads to discharging difficulty, and production is difficult to be continuous.
Disclosure of Invention
Accordingly, the present invention is directed to a high temperature pellet cooling device, which solves the problem of energy waste in the existing cooling method.
In order to achieve the above purpose, the present invention provides the following technical solutions: the high-temperature pellet cooling device comprises a spiral discharging device, wherein a water tank is arranged at the feeding end of the spiral discharging device, and the water tank is obliquely arranged in a mode that the discharging end is higher than the feeding end; the device also comprises a steam cooling device which is connected with a gas collecting hood arranged at the feeding end and the discharging end of the spiral discharging device through a communicating pipe and communicated with the atmosphere.
Further, two ends of the communicating pipe are correspondingly communicated with a gas collecting hood at the feeding end and the discharging end of the spiral discharging device.
Further, the steam cooling device is a venturi tube which is arranged at the top of the gas-collecting hood at the discharge end of the spiral discharging device and is communicated with the gas-collecting hood, and an atomized water nozzle is arranged at the throat opening of the venturi tube.
Further, an exhaust pipeline is connected above the venturi tube.
Further, an exhaust fan is arranged on the exhaust pipeline.
Further, a pressure detection device electrically connected with an exhaust fan is arranged on the gas collecting hood positioned at the feeding end of the spiral discharging device.
Further, the device also comprises a drainage device arranged at the bottom of the water tank at the feeding end of the spiral discharging device, and the drainage device comprises an overflow pipe and a drain pipe.
Further, the overflow pipe is provided with at least two places.
Further, a drain pipe is provided at the lowest end of the water tank of the screw discharging device.
Further, the overflow pipe and the sewage drain pipe are connected with the collecting water pipe.
The invention has the beneficial effects that:
(1) The high-temperature pellets are subjected to water quenching and cooling through the spiral discharging device, and the water quenched materials are fished out and drained, so that the subsequent crushing and magnetic separation are facilitated.
(2) The gas collecting hood collects steam and enters the venturi tube, water is sprayed at the throat of the venturi tube for cooling, steam condensate water and spray water serve as make-up water to flow back to the cooling water tank for cooling, and water consumption is reduced.
(3) The overflow pipe can adjust the water level in the water tank according to the requirements, the sewage drain pipe can regularly discharge slurry deposited in the water tank of the spiral discharging device, internal deposition adhesion is prevented, and the device can also be used for internal emptying during equipment overhaul.
In general, the device system solves the problems of cooling, discharging and vapor recovery of high-temperature pellets, avoids the problems of large energy consumption and easy crushing of pellets in an indirect cooling mode, and also eliminates the problems of unorganized discharge and siltation of vapor in a slag pool water quenching mode; the equipment is simple and easy to control, the production efficiency is high, and the application prospect is wide.
Drawings
In order to make the objects, technical solutions and advantageous effects of the present invention more clear, the present invention provides the following drawings for description:
fig. 1 is a schematic structural view of the present invention.
Detailed Description
Preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.
As shown in the figure, the high-temperature pellet cooling device comprises a spiral discharging device 1, wherein a water tank is arranged at the feeding end of the spiral discharging device 1, and the feeding end is obliquely arranged on a frame 4 in a manner that the discharging end is higher than the feeding end; the device also comprises a steam cooling device which is connected with a gas collecting hood 2 arranged at the feeding and discharging ends of the spiral discharging device 1 through a communicating pipe 3 and is communicated with the atmosphere. The high-temperature pellets are fished out and drained after being quenched and cooled by the spiral discharging device, and are discharged through the discharging hole, steam generated in the water quenching process is sent to the steam cooling device through the gas collecting hood and the communicating pipe 3, and the cooling functions of cooling, discharging and steam collecting are met through the steam cooling device, so that water waste caused by direct discharge of steam is prevented.
In the invention, two ends of the communicating pipe 3 are correspondingly communicated with the gas collecting hoods at the feeding and discharging ends of the spiral discharging device, namely the spiral discharging device 1, the two gas collecting hoods 2 and the communicating pipe 3 form an inclined opening-shaped passage together, which is beneficial to saving the space occupation area of equipment and reducing the height of the equipment. Of course, the two ends of the communicating pipe 3 may also be directly communicated with the steam cooling device and the gas collecting hood 2, that is, the spiral discharging device 1, the two gas collecting hoods 2 and the communicating pipe 3 together form an inclined triangle-shaped passage, and the equipment height is higher than the former.
The steam cooling device is a venturi tube 5 which is arranged at the top of a discharge end gas-collecting hood 2 of the spiral discharging device 1 and is communicated with the gas-collecting hood, and an atomized water nozzle 6 is arranged at the throat opening of the venturi tube 5. Here, the venturi tube 5 and the atomized water nozzle 6 cool the steam together, the steam condensate water and spray water as the water supplement of the cooling device flow into the water tank of the spiral discharging device 1, the water consumption of the water tank for cooling is reduced, and uncooled steam is discharged from the upper part of the venturi tube 5 along with the tail gas.
As a further improvement of the scheme, an exhaust pipeline 7 is connected above the venturi tube 5, and an exhaust fan 8 is arranged on the exhaust pipeline 7 to facilitate the discharge of uncooled steam and tail gas.
As a further improvement of the above scheme, a pressure detection device 12 electrically connected with the exhaust fan 8 is arranged on the gas collecting hood 2 at the feeding end of the spiral discharging device 1. The pressure detection device 12 is interlocked with the exhaust fan 8, and the exhaust amount of the venturi tube 5 is controlled to ensure that the inside of the gas collecting hood 2 is always in a micro negative pressure state of-50 Pa to-100 Pa, so that steam is prevented from entering the front-end equipment.
As a further improvement of the scheme, the device also comprises a drainage device arranged at the bottom of the water tank at the feeding end of the spiral discharging device 1, wherein the drainage device comprises an overflow pipe 9 and a drain pipe 10; the overflow pipe 9 is provided with at least two places, and the drain pipe 10 is arranged at the lowest end of the water tank. The overflow pipe 9 can realize the adjustment of the water tank liquid level, the blow-down pipe 10 can realize the periodic blow-down, prevent the internal sedimentation from bonding, and simultaneously is convenient for the evacuation during the overhaul. The overflow pipe 9 and the sewage discharge pipe 10 are connected with the collecting water pipe 11, so that the subsequent treatment is convenient.
A specific apparatus is described as an example: the spiral discharging device 1 is supported by a frame 4, is obliquely arranged, and the discharging end is higher than the feeding end which is also used as a water tank. The high-temperature direct reduction pellets at the temperature of about 1000 ℃ fall into a water tank of the spiral discharging device 1 through a chute, are directly contacted with water for cooling, and the pellets cooled to the temperature below 100 ℃ and powder produced by water quenching are discharged to a discharge port through the spiral discharging device 1 while being drained.
The head and the tail of the spiral discharging device 1 are respectively provided with a gas collecting hood 2 communicated by a communicating pipe 3, steam generated in the pellet cooling process is collected and enters a venturi tube 5, an atomized water nozzle 6 is arranged at the throat opening of the venturi tube 5, atomized water is sprayed in, heat exchange is enhanced with the steam under the action of high-speed air flow, the cooled steam is discharged together with waste gas in the device through an exhaust pipeline 7 and an exhaust fan 8. The steam condensate water and the spray water flow downwards to supplement water for the water tank of the spiral discharging device 1.
The water tank of the spiral discharging device 1 is provided with two overflow pipes 9, the water level in the water tank can be adjusted according to requirements, the lowest end of the overflow pipe is provided with a drain pipe 10, slurry deposited in the water tank of the spiral discharging device 1 can be discharged regularly, the overflow pipe 9 and the drain pipe 10 can be used for internal emptying during equipment overhaul, the overflow pipe and the drain pipe are collected and then are discharged to a water treatment area through a water collecting pipe 11, and purified water can be recycled.
Finally, it is noted that the above-mentioned preferred embodiments are only intended to illustrate rather than limit the invention, and that, although the invention has been described in detail by means of the above-mentioned preferred embodiments, it will be understood by those skilled in the art that various changes in form and details may be made therein without departing from the scope of the invention as defined by the appended claims.
Claims (5)
1. The utility model provides a high temperature pellet cooling device, includes spiral discharging device, its characterized in that: the feeding end of the spiral discharging device is provided with a water tank which is obliquely arranged in a mode that the discharging end is higher than the feeding end, the feeding end and the discharging end of the spiral discharging device are both provided with gas collecting hoods, and the gas collecting hoods at the feeding end and the discharging end of the spiral discharging device are communicated through a communicating pipe; the device also comprises a steam cooling device, wherein the steam cooling device is a venturi tube which is arranged at the top of a gas collecting hood at the discharge end of the spiral discharging device and is communicated with the gas collecting hood, and an atomized water nozzle is arranged at the throat opening of the venturi tube; the steam cooling device is connected with a gas collecting hood arranged at the feed end of the spiral discharging device through a communicating pipe and communicated with the atmosphere;
the water draining device is arranged at the bottom of the water tank at the feeding end of the spiral discharging device and comprises an overflow pipe and a sewage draining pipe;
the blow-off pipe is arranged at the lowest end of the water tank of the spiral discharging device.
2. The high temperature pellet cooling device according to claim 1, wherein: an exhaust pipeline is connected above the Venturi tube.
3. The high temperature pellet cooling device according to claim 2, characterized in that: an exhaust fan is arranged on the exhaust pipeline.
4. A high temperature pellet cooling device according to claim 3, characterized in that: the gas collecting hood positioned at the feeding end of the spiral discharging device is provided with a pressure detection device electrically connected with the exhaust fan.
5. The high temperature pellet cooling device according to claim 1, wherein: the overflow pipe and the blow-down pipe are connected with the collecting water pipe.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903675.5A CN108642274B (en) | 2018-08-09 | 2018-08-09 | High-temperature pellet cooling device |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810903675.5A CN108642274B (en) | 2018-08-09 | 2018-08-09 | High-temperature pellet cooling device |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108642274A CN108642274A (en) | 2018-10-12 |
| CN108642274B true CN108642274B (en) | 2023-07-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810903675.5A Active CN108642274B (en) | 2018-08-09 | 2018-08-09 | High-temperature pellet cooling device |
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| CN (1) | CN108642274B (en) |
Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2010458A (en) * | 1977-11-29 | 1979-06-27 | Kobe Steel Ltd | Process and apparatus for producing iron ore pellets |
| JPH0361339A (en) * | 1989-07-26 | 1991-03-18 | Kawasaki Steel Corp | Cooling method and cooling device for high temperature-reduced pellet |
| JP2001330379A (en) * | 2000-05-22 | 2001-11-30 | Daido Steel Co Ltd | Reduction pellet continuous cooler |
| KR20030055357A (en) * | 2001-12-21 | 2003-07-04 | 주식회사 포스코 | An apparatus and method for recycling dust and sludge containing iron ironmaking process using coal and fine ore |
| CN202072720U (en) * | 2011-05-16 | 2011-12-14 | 重庆赛迪工业炉有限公司 | High-temperature direct reduced iron cooling system |
| CN205329130U (en) * | 2015-12-23 | 2016-06-22 | 西安睿通冶金科技有限公司 | Cylindrical cooling machine |
| CN205635668U (en) * | 2016-04-29 | 2016-10-12 | 江苏省冶金设计院有限公司 | Rotary hearth furnace DRI cooling device |
| JP2017031444A (en) * | 2015-07-29 | 2017-02-09 | 株式会社神戸製鋼所 | Sintered pellet production device |
| CN206721298U (en) * | 2017-03-01 | 2017-12-08 | 重庆赛迪热工环保工程技术有限公司 | A kind of cylinder for turning round equipment water jetting cooler |
-
2018
- 2018-08-09 CN CN201810903675.5A patent/CN108642274B/en active Active
Patent Citations (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| GB2010458A (en) * | 1977-11-29 | 1979-06-27 | Kobe Steel Ltd | Process and apparatus for producing iron ore pellets |
| JPH0361339A (en) * | 1989-07-26 | 1991-03-18 | Kawasaki Steel Corp | Cooling method and cooling device for high temperature-reduced pellet |
| JP2001330379A (en) * | 2000-05-22 | 2001-11-30 | Daido Steel Co Ltd | Reduction pellet continuous cooler |
| KR20030055357A (en) * | 2001-12-21 | 2003-07-04 | 주식회사 포스코 | An apparatus and method for recycling dust and sludge containing iron ironmaking process using coal and fine ore |
| CN202072720U (en) * | 2011-05-16 | 2011-12-14 | 重庆赛迪工业炉有限公司 | High-temperature direct reduced iron cooling system |
| JP2017031444A (en) * | 2015-07-29 | 2017-02-09 | 株式会社神戸製鋼所 | Sintered pellet production device |
| CN205329130U (en) * | 2015-12-23 | 2016-06-22 | 西安睿通冶金科技有限公司 | Cylindrical cooling machine |
| CN205635668U (en) * | 2016-04-29 | 2016-10-12 | 江苏省冶金设计院有限公司 | Rotary hearth furnace DRI cooling device |
| CN206721298U (en) * | 2017-03-01 | 2017-12-08 | 重庆赛迪热工环保工程技术有限公司 | A kind of cylinder for turning round equipment water jetting cooler |
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| CN108642274A (en) | 2018-10-12 |
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