CN210533024U - Horizontal rolling suspension calcining device for powder materials - Google Patents
Horizontal rolling suspension calcining device for powder materials Download PDFInfo
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- CN210533024U CN210533024U CN201920950350.2U CN201920950350U CN210533024U CN 210533024 U CN210533024 U CN 210533024U CN 201920950350 U CN201920950350 U CN 201920950350U CN 210533024 U CN210533024 U CN 210533024U
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Abstract
The utility model relates to a horizontal rolling suspension calcining device for powder materials, which comprises a cylinder body, a rotary supporting mechanism, a rotary driving mechanism, a feed end closed box and a discharge end closed box; the cylinder body is divided into a flow guide section, a calcining section and a cooling section along the material flowing direction, a plurality of spiral flow deflectors are arranged on the inner walls of the flow guide section, the calcining section and the cooling section close to the calcining section along the circumferential direction and the longitudinal direction, a central cylinder is arranged in the cylinder body of the calcining section, and a plurality of regular spiral spoilers and anti-spiral spoilers are arranged on the outer wall of the central cylinder along the circumferential direction and the longitudinal direction; the inner wall of the cylinder body is provided with a heat-insulating layer. The utility model realizes the suspension fluidization calcination of the powder material by utilizing the spiral guide plate, the forward spiral spoiler and the reverse spiral spoiler which are arranged in the cylinder body, the powder material is fully contacted with hot air for heat exchange, and the product has high activity and uniform quality; compared with the traditional rotary kiln, the length of the cylinder body can be shortened by half, and the cost and the occupied area are saved.
Description
Technical Field
The utility model relates to a calcining device especially relates to a horizontal roll suspension calcining device of powder material.
Background
Mineral calcination is an important process technology for processing metal minerals, and the calcination equipment commonly used at present mainly comprises the following steps: shaft kilns, tunnel kilns, down-draft kilns, rotary kilns, fluidized bed furnaces, suspension furnaces and the like. Wherein the shaft kiln, the tunnel kiln and the down draft kiln are suitable for blocky materials with certain granularity requirements; the rotary kiln, the fluidized bed furnace and the suspension furnace are suitable for powder materials, but have the defects of large energy consumption, nonuniform material heating and low production efficiency, and the product quality cannot be ensured. The suspension fluidization calcining technology can control the heating temperature of the material, avoid overheating and under-burning, has the advantages of high energy utilization rate and short calcining time, and can show the advantages of products with activity requirements. The suspension fluidization technology is mainly applied to the technical field of drying, and is less applied to the technical field of calcining.
Disclosure of Invention
The utility model provides a horizontal rolling suspension calcining device for powder materials, which realizes the suspension fluidization calcining of the powder materials by utilizing a spiral lifting blade and an anti-spiral spoiler which are arranged in a cylinder body, the powder materials are in full contact with hot air for heat exchange, the activity of the product is high, and the quality is uniform; compared with the traditional rotary kiln, the length of the cylinder body can be shortened by half, and the cost and the occupied area are saved.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a horizontal rolling suspension calcining device for powder materials comprises a barrel, a rotary supporting mechanism, a rotary driving mechanism, a feeding end closed box and a discharging end closed box, wherein the rotary supporting mechanism consists of rolling rings and riding wheels, the rotary driving device consists of a motor, a speed reducer, a gear and a gear ring, the barrel is erected on the corresponding riding wheels through at least 2 rolling rings, the gear ring is arranged on the barrel, the motor drives the gear to rotate through the speed reducer, and the gear is meshed with the gear ring to drive the barrel to rotate around a central axis; the cylinder body is arranged obliquely; the high end of the cylinder body is a feeding end, the feeding end extends into the feeding end closed box, the top of the feeding end closed box is provided with a feeding hole, and one end of the feeding end closed box, which is opposite to the feeding end of the cylinder body, is connected with the hot air settling chamber through a hot air inlet; the lower end of the cylinder body is a discharge end, the discharge end extends into the discharge end closed box, the top of the discharge end closed box is provided with an air outlet, and the bottom of the discharge end closed box is provided with a discharge port; the feed end closed box and the discharge end closed box are hermetically connected with the cylinder; the cylinder body is divided into a flow guide section, a calcining section and a cooling section along the material flowing direction, a plurality of spiral lifting plates are arranged on the inner walls of the cylinder body of the flow guide section, the calcining section and the cooling section close to the calcining section along the circumferential direction and the longitudinal direction, a central cylinder is arranged in the cylinder body of the calcining section, and a plurality of forward spiral spoilers and a plurality of reverse spiral spoilers are arranged on the outer wall of the central cylinder along the circumferential direction and the longitudinal direction; the inner wall of the cylinder body is provided with a heat-insulating layer.
The heat-insulating layer consists of a refractory brick layer, a heat-resistant castable layer and a nano micropore heat-insulating layer which are sequentially arranged from inside to outside.
The outer wall of the cylinder body is made of metal.
The spiral lifting plate, the forward spiral spoiler and the reverse spiral spoiler are formed by spirally winding stainless steel metal plate strips.
The spiral material raising plate is different in setting angle, length, width, rotating radius and screw pitch.
The spiral directions of the forward spiral spoiler and the reverse spiral spoiler are opposite, and the forward spiral spoiler and the reverse spiral spoiler are irregularly arranged on the outer wall of the central cylinder; the setting angle, the length, the width, the rotating radius and the screw pitch of the positive spiral spoiler are different, and the setting angle, the length, the width, the rotating radius and the screw pitch of the reverse spiral spoiler are different.
The spiral lifting plate and the anti-spiral spoiler are formed by spirally winding stainless steel metal plate strips, and spiral center lines of the spiral lifting plate and the anti-spiral spoiler are respectively vertical to the inner wall of the corresponding cylinder body or the outer wall of the central cylinder; the spiral direction of the spiral material raising plate is opposite to that of the reverse spiral spoiler.
The inclination of the cylinder body is 1.5-3.5 degrees, and the length of the cylinder body is 20-25 meters.
The ratio of the inner diameter of the cylinder body to the outer diameter of the central cylinder is 5-8: 1.
the center cylinder is fixedly connected with the inner wall of the cylinder body through a support frame, and the support frame consists of a plurality of support arms arranged along the circumferential direction of the center cylinder.
The feeding port and the discharging port are respectively provided with a high-temperature resistant rotary sealing valve, and a temperature sensor and a pressure sensor are arranged in the feeding end closed box and the discharging end closed box.
Compared with the prior art, the beneficial effects of the utility model are that:
1) the calcining section of the device of the utility model is provided with the spiral lifting blade and the reverse spiral spoiler, which can generate the effects of diversion, disturbance, beating and suspension fluidization, and the heat exchange area between the powder ore and the hot air is large, and the heat exchange is sufficient; the product obtained by suspension fluidization calcination has high activity and uniform quality;
2) the technological parameters are convenient to adjust, the calcining temperature can be accurately controlled, the material conveying speed is adjusted by using the cylinder driving mechanism, the temperature and the flowing speed of hot air are adjusted at any time by monitoring through temperature sensors and pressure sensors at the hot air inlet and the discharge port, and the quality of a calcined product is controlled;
3) the hot air inlet is vertical to the feeding hole, and hot air flows along the horizontal direction and is in cross contact with the waterfall flow of the powder material in a free falling body, so that rapid mass and heat transfer are performed, and the calcining efficiency is further improved;
4) compared with the length of the traditional rotary kiln (about 40-45 m), the length of the cylinder can be shortened by half, and the project investment cost and the equipment floor area are greatly saved.
Drawings
Fig. 1 is a schematic structural diagram of a horizontal rolling suspension calcining device for powder materials of the present invention.
Fig. 2 is a schematic view of the longitudinal section structure of the barrel of the present invention.
Fig. 3 is a view a-a in fig. 2.
Fig. 4 is a view B-B in fig. 2.
Fig. 5 is a view C-C in fig. 2.
Fig. 6 is a view D-D in fig. 2.
Fig. 7 is a schematic structural view of the heat-insulating layer of the present invention.
In the figure: 1. barrel 101, flow guide section 102, calcining section 103, cooling section 104, spiral lifting plate 105, spiral spoiler 106, spiral spoiler 107, center barrel 108, refractory brick layer 109, heat-resistant castable layer 110, nano micropore heat insulation layer 111, outer wall 2, rolling ring 3, riding wheel 4, motor 5, speed reducer 6, gear 7, gear ring 8, feed end closed box 9, discharge end closed box 10, hot air inlet 11, hot air settling chamber 12, feed inlet 13, air outlet 14 and discharge outlet 14
Detailed Description
The following description of the embodiments of the present invention will be made with reference to the accompanying drawings:
as shown in fig. 1-6, the horizontal rolling suspension calcining device for powder materials of the present invention comprises a cylinder 1, a rotary supporting mechanism, a rotary driving mechanism, a feeding end sealing box 8 and a discharging end sealing box 9, wherein the rotary supporting mechanism comprises rolling rings 2 and riding wheels 3, the rotary driving mechanism comprises a motor 4, a speed reducer 5, a gear 6 and a gear ring 7, the cylinder 1 is erected on the corresponding riding wheel 3 through at least 2 rolling rings 2, the gear ring 7 is arranged on the cylinder 1, the motor 4 drives the gear 6 to rotate through the speed reducer 5, and the gear 6 is engaged with the gear ring 7 to drive the cylinder 1 to rotate around a central axis; the cylinder body 1 is obliquely arranged; the high end of the cylinder body 1 is a feeding end, the feeding end extends into the feeding end closed box 8, the top of the feeding end closed box 8 is provided with a feeding hole 12, and one end of the feeding end closed box 8, which is opposite to the feeding end of the cylinder body 1, is connected with a hot air settling chamber 11 through a hot air inlet 10; the lower end of the barrel body 1 is a discharge end, the discharge end extends into the discharge end closed box 9, the top of the discharge end closed box 9 is provided with an air outlet 13, and the bottom of the discharge end closed box is provided with a discharge port 14; the feeding end closed box 8, the discharging end closed box 9 and the cylinder body 1 are in sealed connection; as shown in fig. 2, the cylinder 1 is divided into a flow guide section 101, a calcining section 102 and a cooling section 103 along the material flow direction, a plurality of spiral material raising plates 104 (shown in fig. 2-5) are arranged on the inner walls of the flow guide section 101, the calcining section 102 and the cooling section 103 close to the calcining section 102 along the circumferential direction and the longitudinal direction, a central cylinder 106 is arranged in the cylinder of the calcining section 102, and a plurality of forward spiral spoilers 105 and a plurality of reverse spiral spoilers 106 (shown in fig. 2, 4 and 5) are arranged on the outer wall of the central cylinder 106 along the circumferential direction and the longitudinal direction; the inner wall of the cylinder body 1 is provided with a heat-insulating layer.
As shown in fig. 7, the insulating layer is composed of a refractory brick layer 108, a refractory castable layer 109 and a nano-microporous thermal insulation layer 110 which are sequentially arranged from inside to outside.
The outer wall 111 of the cylinder 1 is made of metal.
The spiral lifting plate 104, the forward spiral spoiler 105 and the reverse spiral spoiler 106 are formed by spirally winding stainless steel metal plate strips.
The spiral material raising plate 104 is different in setting angle, length, width, rotation radius and pitch.
The spiral directions of the forward spiral spoiler 105 and the reverse spiral spoiler 106 are opposite, and the forward spiral spoiler 105 and the reverse spiral spoiler 106 are irregularly arranged on the outer wall of the central cylinder 107; the setting angle, length, width, radius of rotation, and pitch of the forward spiral spoiler 105 are different from each other, and the setting angle, length, width, radius of rotation, and pitch of the reverse spiral spoiler 106 are different from each other.
The inclination of the cylinder body 1 is 1.5-3.5 degrees, and the length of the cylinder body 1 is 20-25 meters.
The ratio of the inner diameter of the barrel body 1 to the outer diameter of the central barrel 107 is 5-8: 1.
the central cylinder 107 is fixedly connected with the inner wall of the cylinder body 1 through a support frame, and the support frame consists of a plurality of support arms arranged along the circumferential direction of the central cylinder 106.
The length of the barrel body 1 is 20-25 m.
The feed inlet 12 and the discharge outlet 14 are respectively provided with a high-temperature resistant rotary seal valve, and the feed end closed box 8 and the discharge end closed box 9 are both provided with a temperature sensor and a pressure sensor.
The horizontal rolling suspension calcining device for the powder materials has the highest working temperature of 1000 +/-50 ℃; the barrel 1 is driven to rotate and roll through a mechanical transmission system, the barrel 1 is in contact with the riding wheel 3 through the rolling ring 2, the riding wheel 3 is used as a support of the barrel 1, and the barrel 1 is located on the riding wheel 3 along the longitudinal direction with a certain inclination.
The fixed end of the spiral material raising plate 104 is embedded in the refractory brick layer 108 on the inner layer of the cylinder 1, the specific size and the spiral radius of the spiral material are determined by the particle size of the powder material, the purpose is to raise the powder material to achieve the effect of suspension fluidization, when the powder material flows to the calcining section 102 along with hot wind, the powder material is disturbed and raised by the normal spiral spoiler 105 and the reverse spiral spoiler arranged on the outer side of the central cylinder 106, and the powder material after suspension fluidization is cooled by the cooling section 103 and then discharged from the discharge port. The specific spiral directions of the forward spiral spoiler 105 and the reverse spiral spoiler 106 are not limited as long as the spiral directions of the forward spiral spoiler 105 and the reverse spiral spoiler 106 are opposite (the arrangement in fig. 4 and 5 is only schematic and is not limiting).
The feed end closed box 8 and the discharge end closed box 9 at the two ends of the cylinder 1 are of a fixed structure, namely do not rotate along with the cylinder 1; the powder material vertically falls from the upper part of the feed port 12 to form a waterfall-shaped material flow, hot air rapidly flows to the feed end of the cylinder 1 along the horizontal direction, the powder material is brought into the cylinder 1 by the hot air, and the powder material and the hot air are crossly flowed, fully mixed and simultaneously realize rapid mass and heat transfer.
The heat-insulating layer in the cylinder body 1 can play a good heat-insulating role, and the nano-microporous heat-insulating layer 110 is made of a nano-microporous heat-insulating plate, so that the heat-insulating property is good, and the heat loss of a system can be effectively reduced; the feeding end and the discharging end at the two ends of the cylinder 1 are both of an open structure, and are respectively sealed by a feeding end sealing box 8 and a discharging end sealing box 9, and the inside of the calcining device is effectively isolated from the outside by rotary sealing valves arranged at a feeding port 12 and a discharging port 14.
Considering the use performance and the economical efficiency comprehensively, the preferable metal material of the outer wall of the cylinder 1 is Q235 steel, and the preferable material of the spiral material raising plate 104, the forward spiral spoiler 105 and the reverse spiral spoiler 106 is 310S stainless steel.
The temperature sensors and the pressure sensors in the feeding end closed box 8 and the discharging end closed box 9 are respectively connected with the control system, the control system is additionally connected with the hot air generating device and valves on the hot air pipeline to timely regulate and control the air intake, the air speed and the temperature of hot air, so that the calcination degree of the powder material is effectively controlled, and over-burning or under-burning is prevented.
The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.
Claims (10)
1. A horizontal rolling suspension calcining device for powder materials comprises a barrel, a rotary supporting mechanism, a rotary driving mechanism, a feeding end closed box and a discharging end closed box, wherein the rotary supporting mechanism consists of rolling rings and riding wheels, the rotary driving device consists of a motor, a speed reducer, a gear and a gear ring, the barrel is erected on the corresponding riding wheels through at least 2 rolling rings, the gear ring is arranged on the barrel, the motor drives the gear to rotate through the speed reducer, and the gear is meshed with the gear ring to drive the barrel to rotate around a central axis; the cylinder body is arranged obliquely; the device is characterized in that the high end of the cylinder body is a feeding end, the feeding end extends into a feeding end closed box, the top of the feeding end closed box is provided with a feeding hole, and one end of the feeding end closed box, which is opposite to the feeding end of the cylinder body, is connected with a hot air settling chamber through a hot air inlet; the lower end of the cylinder body is a discharge end, the discharge end extends into the discharge end closed box, the top of the discharge end closed box is provided with an air outlet, and the bottom of the discharge end closed box is provided with a discharge port; the feed end closed box and the discharge end closed box are hermetically connected with the cylinder; the cylinder body is divided into a flow guide section, a calcining section and a cooling section along the material flowing direction, a plurality of spiral lifting plates are arranged on the inner walls of the cylinder body of the flow guide section, the calcining section and the cooling section close to the calcining section along the circumferential direction and the longitudinal direction, a central cylinder is arranged in the cylinder body of the calcining section, and a plurality of forward spiral spoilers and a plurality of reverse spiral spoilers are arranged on the outer wall of the central cylinder along the circumferential direction and the longitudinal direction; the inner wall of the cylinder body is provided with a heat-insulating layer.
2. The horizontal rolling suspension calcining device for the powder materials as claimed in claim 1, wherein the heat-insulating layer is composed of a refractory brick layer, a heat-resistant castable layer and a nano-microporous heat-insulating layer which are sequentially arranged from inside to outside.
3. The horizontal rolling suspension calcining device for the powder materials as claimed in claim 1, wherein the outer wall of the cylinder body is made of metal.
4. The horizontal rolling suspension calcining device for powdery materials as claimed in claim 1, wherein the spiral material raising plate, the forward spiral spoiler and the reverse spiral spoiler are formed by spirally winding stainless steel metal plate strips.
5. The horizontal rolling suspension calcining device for powder materials as claimed in claim 1 or 4, wherein the spiral material raising plate has different setting angles, lengths, widths, rotating radiuses and screw pitches.
6. The horizontal rolling suspension calcining device for the powder materials as claimed in claim 1 or 4, wherein the spiral directions of the normal spiral spoiler and the reverse spiral spoiler are opposite, and the normal spiral spoiler and the reverse spiral spoiler are irregularly arranged on the outer wall of the central cylinder; the setting angle, the length, the width, the rotating radius and the screw pitch of the positive spiral spoiler are different, and the setting angle, the length, the width, the rotating radius and the screw pitch of the reverse spiral spoiler are different.
7. The horizontal rolling suspension calcining device for the powder materials as claimed in claim 1, wherein the inclination of the cylinder is 1.5-3.5 degrees, and the length of the cylinder is 20-25 meters.
8. The horizontal rolling suspension calcining device for the powder materials as claimed in claim 1, wherein the ratio of the inner diameter of the cylinder body to the outer diameter of the central cylinder is 5-8: 1.
9. the horizontal rolling suspension calcining device for the powder materials as claimed in claim 1 or 4, wherein the central cylinder is fixedly connected with the inner wall of the cylinder body through a support frame, and the support frame is composed of a plurality of support arms arranged along the circumference of the central cylinder.
10. The horizontal rolling suspension calcining device for powder materials as claimed in claim 1, wherein the feeding port and the discharging port are respectively provided with a high temperature resistant rotary seal valve, and the feeding end closed box and the discharging end closed box are respectively provided with a temperature sensor and a pressure sensor.
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| Application Number | Priority Date | Filing Date | Title |
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| CN201920950350.2U CN210533024U (en) | 2019-06-21 | 2019-06-21 | Horizontal rolling suspension calcining device for powder materials |
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| CN201920950350.2U CN210533024U (en) | 2019-06-21 | 2019-06-21 | Horizontal rolling suspension calcining device for powder materials |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285676A (en) * | 2019-06-21 | 2019-09-27 | 王克非 | A kind of powder material horizontal type rolling suspension calcining device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110285676A (en) * | 2019-06-21 | 2019-09-27 | 王克非 | A kind of powder material horizontal type rolling suspension calcining device |
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