CN112094967A - High-temperature slag disc slag cooler - Google Patents
High-temperature slag disc slag cooler Download PDFInfo
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- CN112094967A CN112094967A CN202010838568.6A CN202010838568A CN112094967A CN 112094967 A CN112094967 A CN 112094967A CN 202010838568 A CN202010838568 A CN 202010838568A CN 112094967 A CN112094967 A CN 112094967A
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- slag
- cooling
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- box
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/08—Cooling slag
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B3/00—General features in the manufacture of pig-iron
- C21B3/04—Recovery of by-products, e.g. slag
- C21B3/06—Treatment of liquid slag
- C21B3/10—Slag pots; Slag cars
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
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- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21B—MANUFACTURE OF IRON OR STEEL
- C21B2400/00—Treatment of slags originating from iron or steel processes
- C21B2400/05—Apparatus features
- C21B2400/066—Receptacle features where the slag is treated
- C21B2400/072—Tanks to collect the slag, e.g. water tank
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Manufacturing & Machinery (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
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Abstract
The invention provides a high-temperature slag disc slag cooler, which comprises a disc rack and a plurality of slag cooling boxes, wherein the slag cooling boxes are arranged along the radial direction of the disc rack and are distributed at intervals along the circumferential direction of the disc rack, the slag cooling boxes are all fixed on the disc frame, each slag cooling box comprises a water cooling jacket with cooling water flowing inside, the water cooling jacket is annular, and the outer wall of the water-cooling jacket positioned on the inner side is surrounded to form a cold slag body for receiving high-temperature slag, the top of the cold slag body is provided with a guide chute butted with a slag chute, the guide chute is communicated with the cold slag body, the bottom of the cold slag body is provided with a discharge plate, a high-temperature slag buffer hopper is arranged above the cold slag box and is positioned at the center of the disc frame, the bottom of the buffer hopper is communicated with a slag chute for conveying high-temperature slag into each cold slag box, and the high-temperature slag disc slag cooler further comprises a transmission mechanism for driving the buffer hopper to rotate to convey high-temperature slag into different cold slag boxes.
Description
Technical Field
The invention relates to the technical field of slag coolers, in particular to a high-temperature slag disc slag cooler.
Background
In the industrial field, a large amount of high-temperature molten slag exists, such as blast furnace slag, steel slag, ferronickel slag and the like in the production process of the ferrous metallurgy industry, copper slag and the like in the production process of the non-ferrous metal industry, and slag in the production process of hazardous waste high-temperature melting.
Taking the blast furnace slag with the largest total amount as an example, the blast furnace slag is cooled mainly by a water quenching method at present, the water quenching method not only consumes a large amount of water resources, but also generates a large amount of non-pressurized water vapor, fine dust and SO2 and H2S gas to pollute the environment, and meanwhile, further drying is needed during resource utilization, SO that the energy consumption for treatment is increased.
The problem of efficient utilization of high-temperature slag has caused a hot trend of research and development of people before fifty years, and various high-temperature slag dry treatment technologies are in China at present, wherein the high-temperature slag dry treatment technology is most representative of a wind crushing method and a rotary cup granulation method. The heat recovery efficiency of the air quenching method is about 48 percent, the quality of the finished product slag is equivalent to that of water-quenched slag, but the problems of large occupied area, high investment cost, high operation cost and the like exist. The rotary cup granulation waste heat recovery efficiency is high, the granulation effect is good, but the device structure is complex, and the technical problems of blockage, caking and the like easily occur to high-temperature molten slag with poor fluidity.
Under the severe situation that the global energy demand continuously increases and the actual supply relatively and continuously decreases, energy conservation and emission reduction are imperative. Therefore, the development of an indirect quenching apparatus has become a technical problem to be solved by those skilled in the art.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provides a high-temperature slag disc slag cooler, which adopts an indirect water cooling mode to realize rapid cooling of high-temperature slag, can recycle the waste heat in cooling water after being utilized, has simple structure, low cost, high waste heat recovery rate and strong slag viscosity adaptability (does not make special requirements on the viscosity of the high-temperature slag), does not influence the subsequent utilization value of the slag and has high operation stability.
The invention is realized by the following steps:
the invention provides a high-temperature slag disc slag cooler, which comprises a disc rack and a plurality of slag cooling boxes, wherein each slag cooling box is arranged along the radial direction of the disc rack, the slag cooling boxes are distributed at intervals along the circumferential direction of the disc rack, each slag cooling box is fixed on the disc rack, each slag cooling box comprises a water cooling jacket in which cooling water flows, a cooling water inlet and a cooling water outlet are formed in the water cooling jacket, the water cooling jacket is annular, the outer wall of the water cooling jacket positioned on the inner side encloses and synthesizes a slag cooling body for receiving high-temperature slag, a guide chute butted with a slag chute is arranged at the top of the slag cooling body, the guide chute is communicated with the slag cooling body, a discharge plate is arranged at the bottom of the slag cooling body, a cache hopper for the high-temperature slag is arranged above each slag cooling box, and the cache hopper is positioned in the center of the disc rack, the bottom of the buffer hopper is communicated with a slag chute for conveying high-temperature slag into each slag cooling box, the high-temperature slag disc slag cooler further comprises a transmission mechanism for driving the buffer hopper to rotate to convey high-temperature slag into different slag cooling boxes, and an output shaft of the transmission mechanism is connected with the buffer hopper through a coupler.
Preferably, the cold slag body is flat along the radial direction of the disc frame.
Preferably, the guide chute comprises a first flared end in butt joint with the slag chute for feeding and a first narrow end in butt joint communication with the cold slag body, the caliber of the guide chute is gradually reduced along the direction from the first flared end to the first narrow end, the cold slag body comprises a second flared end provided with a discharging plate and a second narrow end in butt joint communication with the guide chute, and the caliber of the cold slag body is gradually reduced along the direction from the second flared end to the second narrow end.
Preferably, two opposite side surfaces of the material guide groove and two opposite side surfaces of the cold slag body are both arc surfaces along the radial direction of the disc stand.
Preferably, the cooling water inlet is located at the bottom of the cold slag box, the cooling water outlet is located at the top of the cold slag box, and the cooling water inlet and the cooling water outlet are located on two opposite sides of the cold slag box respectively along the radial direction of the disc rack.
Preferably, a flowmeter is arranged in the slag chute, or a weighing sensor is arranged at the bottom of the cold slag tank.
Preferably, the buffer bucket is of a hemispherical structure.
Preferably, the outer side of the water-cooling jacket is provided with a heat-insulating layer.
Preferably, the cold slag boxes are uniformly distributed at intervals along the circumferential direction of the disc frame.
Preferably, the transmission mechanism is a motor, and an output shaft of the motor is connected with the buffer hopper through a coupler.
The invention has the following beneficial effects:
the high-temperature slag disc slag cooler provided by the invention adopts an indirect water cooling mode, so that high-temperature slag is not directly contacted with water and can achieve the effect of rapid cooling, the high-temperature slag disc slag cooler provided by the invention adopts the indirect water cooling mode, a large amount of non-pressurized water vapor and fine dust are not generated to pollute the environment, further drying is not needed during resource utilization, the energy consumption is reduced, and the condition that the high-temperature slag is directly contacted with water to cause danger is avoided.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
FIG. 1 is a schematic structural diagram of a high temperature slag disc slag cooler in a top view according to an embodiment of the present invention;
fig. 2 is a schematic cross-sectional view of a high-temperature slag disc slag cooler provided in an embodiment of the present invention.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
As shown in fig. 1-2, an embodiment of the present invention provides a high temperature slag disk slag cooler, including a disk frame 1 and a plurality of slag cooling boxes 2, where the number and size of the slag cooling boxes 2 may be set according to engineering requirements, each slag cooling box 2 is located inside the disk frame 1, each slag cooling box 2 is arranged along a radial direction of the disk frame 1, each slag cooling box 2 is uniformly distributed along a circumferential direction of the disk frame 1 at intervals, each slag cooling box 2 is fixed on the disk frame 1, each slag cooling box 2 includes a water cooling jacket 23 in which cooling water flows, the water cooling jacket 23 is provided with a cooling water inlet 25 and a cooling water outlet 26, the water cooling jacket 23 is annular, an outer wall of the water cooling jacket 23 located inside surrounds and synthesizes a slag cooling body 22 for receiving high temperature slag, a guide chute 21 in butt joint with the slag cooling body 22 is provided at a top portion of the slag cooling body 22, the guide chute 21 is communicated with the cold slag body 22, the discharging plate 24 is arranged at the bottom of the cold slag body 22, the discharging plate 24 can be opened to fall off after the high-temperature slag is cooled to form a glass body, and the heat insulation layer 27 is arranged on the outer side of the water cooling jacket 23 to prevent scalding and heat loss. A buffer hopper 3 for placing high-temperature molten slag is arranged above each cold slag box 2, the buffer hopper 3 is positioned at the center of the disc frame 1, the bottom of the buffer hopper 3 is communicated with a slag chute 4 for conveying the high-temperature molten slag into each cold slag box 2, the high-temperature molten slag disc slag cooler further comprises a transmission mechanism 5 for driving the buffer hopper 3 to rotate and conveying the high-temperature molten slag into different cold slag boxes 2, and an output shaft of the transmission mechanism 5 is connected with the buffer hopper 3 through a coupler.
Along the radial direction of the disc frame 1, the cold slag body 22 is flat, so that the heat exchange area is increased, and the heat exchange efficiency is improved. The guide chute 21 comprises a first flared end which is in butt joint with the slag chute 4 for feeding and a first narrow end which is in butt joint with the cold slag body 22 for communication, the caliber of the guide chute 21 is gradually reduced along the direction from the first flared end to the first narrow end, the cold slag body 22 comprises a second flared end provided with a discharging plate 24 and a second narrow end which is in butt joint with the guide chute 21 for communication, the caliber of the cold slag body 22 is gradually reduced along the direction from the second flared end to the second narrow end, namely, the inlet of the guide chute 21 and the outlet of the cold slag body 22 are both provided with inclination angles; the edge in the radial direction of disc frame 1, two sides that the baffle box is relative and two sides that the cold sediment body is relative are the arc surface, and baffle box 21 import and the export of cold sediment body 22 all are provided with the inclination, and both sides edge adopts convex design, can prevent that high temperature slag from spattering outward, and the putty or the not smooth phenomenon of unloading are convenient for the feeding and are unloaded more. The top edge of the material guide groove 21 is provided with an annular fence protruding upwards, so that slag can be further prevented from splashing outwards.
In this embodiment, the cold slag body 22 is flat, the cooling water inlet 25 is located the bottom of the cold slag box 2, the cooling water outlet 26 is located the top of the cold slag box 2, and along the radial direction of the disk rack 1, the cooling water inlet 25 and the cooling water outlet 26 are respectively located on two opposite sides of the cold slag box 2, so that the heat exchange area is increased, and the cooling efficiency is improved.
In this embodiment, the transmission mechanism is a motor, and an output shaft of the motor is connected with the buffer hopper through a coupler.
The invention provides a high-temperature slag disc slag cooler, which comprises a disc frame 1, a slag cooling box 2, a buffer hopper 3, a slag chute 4 and a transmission mechanism 5, wherein the slag cooling box 2 comprises: a material guide chute 21, a cold slag body 22, a water cooling jacket 23, a discharging plate 24, a cooling water inlet 25, a cooling water outlet 26 and an insulating layer 27.
The slag cooler buffer hopper 3 is connected with the slag chute 4, the slag cooler boxes 2 are uniformly fixed on the disc rack 1 along the disc, and the number of the slag cooler boxes 2 can be set according to the actual yield requirement.
The buffer hopper 3 is arranged at the center of the disc frame 1, the transmission mechanism 5 drives the buffer hopper 3 to rotate, and high-temperature slag is conveyed into each cold slag box 2 from the buffer hopper 3. The buffer hopper 3 is of a hemispherical structure, is stable when rotating for feeding, and is not easy to leak and scatter materials.
The slag cooling box 2 comprises a slag cooling body 22, a water cooling jacket 23 and a heat preservation layer 27 from inside to outside in sequence, high-temperature slag enters the slag cooling body 22, cooling water enters the water cooling jacket 23 to cool the slag, and the heat preservation layer 27 is arranged on the outer layer of the water cooling jacket 23 to prevent scalding and heat loss.
The buffer hopper 3, the slag chute 4, the guide chute 21, the cold slag body 22 and the stripper plate 24 are all made of high-temperature resistant materials and can work at 1400-1600 ℃; the water cooling jacket 23 is made of common stainless steel, so that rusting is prevented, and the safety and the long-term working stability of the jacket are kept.
The cold sediment case 2 sets up baffle box 21, avoids the slag to spatter outward, causes the potential safety hazard, and baffle box 21 welds on cold sediment body 22 upper portion, and baffle box 21 import and cold sediment body 22 export all are provided with the inclination, and both sides edge adopts convex design, can prevent that high temperature slag from spattering outward, perhaps the smooth phenomenon of putty unloading.
The cold slag body 22 is the platykurtic, and cooling water inlet 25 is located the bottom of cold slag box 2, and cooling water outlet 26 is in cold slag box 2 top, and cooling water outlet 26 is at the contralateral top of cooling water inlet, and heat exchange area increases, promotes cooling efficiency.
The bottom of the slag cooling box 2 is provided with a discharging plate 24, and after the high-temperature slag is cooled to form a glass body, the discharging plate 24 can be opened to fall off.
The guide plates can be arranged in the water-cooling jacket 23 and are uniformly distributed in the water-cooling jacket 23, so that cooling water can fully flow through the whole water-cooling jacket 23 and then flow out from the cooling water outlet 26, the guide plates can be of a spirally-rising partition plate structure, the heat exchange efficiency is further improved by the guide plates, and the service life of the water-cooling jacket 23 is prolonged. The water-cooling jacket 23 can be replaced by a plurality of guide pipes, cooling water flows in the guide pipes, the guide pipes spirally rise around the cold slag body 22, the guide pipes are uniformly arranged at intervals, cooling water inlets of the guide pipes are positioned at the bottom of the cold slag box, and cooling water outlets of the guide pipes are positioned at the top of the cold slag box.
When the slag cooler works, high-temperature slag passes through the slag chute 4 from the cache hopper 3, a flow meter is installed on the slag chute 4 to detect the slag flow (a weighing sensor can also be installed at the bottom of the slag cooling box 2), in the embodiment, a PLC is adopted as a controller, after the slag cooling body 22 is filled with the slag, the flow meter/weighing sensor gives a signal to the PLC, the PLC controls the transmission mechanism 5 to start, the transmission mechanism 5 drives the cache hopper 3 to rotate to feed the next slag cooling box 2, and automatic feeding of the high-temperature slag is realized. After the high-temperature slag flows into the slag cooling box 2, cooling water flows into the water cooling jacket 23 from a cooling water inlet 25 at the bottom of the slag cooling box 2 to take away heat of the high-temperature slag, flows out from a cooling water outlet 26 above the side of the slag cooling box 2, forms a glass body after the high-temperature slag is cooled, and can open a discharging plate 24 at the bottom of the slag cooling box 2 to enable the glass body to fall off.
In the invention, the feeding mode of the high-temperature molten slag is that the transmission mechanism 5 drives the buffer hopper 3 to discontinuously rotate and feed the high-temperature molten slag into the cold slag box 2; the center of the disc rack 1 is provided with the hemispherical buffer hopper 3, and the buffer hopper 3 has a stable structure when rotating for feeding, and is not easy to leak and scatter materials; the inlet of the material guide groove 21 of the cold slag box and the outlet of the cold slag body 22 are provided with inclination angles, and the two sides of the material inlet and the material outlet are arranged in circular arc shapes, so that the feeding and the discharging are convenient; the cooling water inlet 25 is positioned at the bottom of the cold slag box, and the cooling water outlet 26 is positioned at the top of the opposite side of the cold slag box, so that the heat exchange efficiency is ensured; the outer side of the water-cooling jacket 23 is provided with a heat-insulating layer 27, so that scalding and heat loss can be effectively prevented.
The high-temperature slag disc slag cooler provided by the invention adopts an indirect water cooling mode, so that high-temperature slag is not directly contacted with water and can achieve the effect of rapid cooling, the high-temperature slag disc slag cooler provided by the invention adopts the indirect water cooling mode, a large amount of non-pressurized water vapor and fine dust are not generated to pollute the environment, further drying is not needed during resource utilization, the energy consumption is reduced, and the condition that the high-temperature slag is directly contacted with water to cause danger is avoided.
The above description is only for the purpose of illustrating the preferred embodiments of the present invention and is not to be construed as limiting the invention, and any modifications, equivalents, improvements and the like that fall within the spirit and principle of the present invention are intended to be included therein.
Claims (10)
1. The high-temperature slag disc slag cooler is characterized in that: the slag cooling device comprises a disc rack and a plurality of slag cooling boxes, wherein each slag cooling box is arranged along the radial direction of the disc rack and is distributed at intervals along the circumferential direction of the disc rack, each slag cooling box is fixed on the disc rack and comprises a water cooling jacket with cooling water flowing inside, a cooling water inlet and a cooling water outlet are formed in the water cooling jacket, the water cooling jacket is annular, the outer wall of the inner side of the water cooling jacket surrounds and synthesizes a slag cooling body for receiving high-temperature slag, a guide chute butted with a slag chute is formed in the top of the slag cooling body and is communicated with the slag cooling body, a discharge plate is arranged at the bottom of the slag cooling body, a high-temperature slag buffer hopper is arranged above each slag cooling box and is positioned in the center of the disc rack, and a slag chute for conveying the high-temperature slag into each slag cooling box is communicated with the bottom of the buffer hopper, the high-temperature slag disc slag cooler further comprises a transmission mechanism for driving the buffer hopper to rotate to convey high-temperature slag to different slag cooling boxes, and an output shaft of the transmission mechanism is connected with the buffer hopper through a coupler.
2. The high temperature slag disk slag cooler of claim 1, wherein: and along the radial direction of the disc rack, the cold slag body is flat.
3. The high temperature slag disk slag cooler of claim 2, wherein: the guide chute comprises a first flaring end and a first narrow end, wherein the first flaring end is in butt joint with the slag chute to feed materials, the first narrow end is in butt joint with the cold slag body, the caliber of the guide chute is gradually reduced along the direction from the first flaring end to the first narrow end, the cold slag body comprises a second flaring end and a second narrow end, the second flaring end is provided with a discharging plate, the second narrow end is in butt joint with the guide chute to communicate with the guide chute, and the caliber of the cold slag body is gradually reduced along the direction from the second flaring end to the second narrow end.
4. The high temperature slag disk slag cooler of claim 3, wherein: and along the radial direction of the disc rack, two opposite side surfaces of the guide chute and two opposite side surfaces of the cold slag body are both arc surfaces.
5. The high temperature slag disk slag cooler of claim 2, wherein: the cooling water inlet is located at the bottom of the cold slag box, the cooling water outlet is located at the top of the cold slag box, and the cooling water inlet and the cooling water outlet are located on two opposite sides of the cold slag box respectively along the radial direction of the disc rack.
6. The high temperature slag disk slag cooler of claim 1, wherein: and a flowmeter is arranged in the slag chute, or a weighing sensor is arranged at the bottom of the cold slag box.
7. The high temperature slag disk slag cooler of claim 1, wherein: the buffer storage hopper is of a hemispherical structure.
8. The high temperature slag disk slag cooler of claim 1, wherein: and a heat insulation layer is arranged on the outer side of the water-cooling jacket.
9. The high temperature slag disk slag cooler of claim 1, wherein: and the cold slag boxes are uniformly distributed at intervals along the circumferential direction of the disc rack.
10. The high temperature slag disk slag cooler of claim 1, wherein: the transmission mechanism is a motor, and an output shaft of the motor is connected with the buffer hopper through a coupler.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010838568.6A CN112094967A (en) | 2020-08-19 | 2020-08-19 | High-temperature slag disc slag cooler |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010838568.6A CN112094967A (en) | 2020-08-19 | 2020-08-19 | High-temperature slag disc slag cooler |
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| CN112094967A true CN112094967A (en) | 2020-12-18 |
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| CN202010838568.6A Pending CN112094967A (en) | 2020-08-19 | 2020-08-19 | High-temperature slag disc slag cooler |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957184A (en) * | 2021-11-10 | 2022-01-21 | 北京中冶设备研究设计总院有限公司 | Slag granulation primary cooling section device and method |
-
2020
- 2020-08-19 CN CN202010838568.6A patent/CN112094967A/en active Pending
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113957184A (en) * | 2021-11-10 | 2022-01-21 | 北京中冶设备研究设计总院有限公司 | Slag granulation primary cooling section device and method |
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