Pyrite fluidized bed furnace roasting device

Abstract

The utility model discloses a roasting device of a pyrite fluidized bed furnace, which belongs to the technical field of roasting of pyrite fluidized bed furnaces and comprises a roasting furnace, the bottom surface of the roasting furnace is communicated with a discharge valve, the upper surface of the roasting furnace is communicated with a feed hopper, and a spiral guide plate is connected inside the roasting furnace. A spiral flow guide plate is arranged in the roasting furnace, a filter plate is connected to the inner ring of the spiral flow guide plate, the outer surface of the roasting furnace communicates with an air inlet pipe, the upper surface of the roasting furnace communicates with an exhaust pipe, and hot air can be guided to spirally move in the roasting furnace through cooperation of the spiral flow guide plate and the air inlet pipe; therefore, the residence time of hot air in the roasting furnace can be prolonged, then a driving motor can drive a connecting rod and a stirring rod to rotate, pyrite in the roasting furnace can be stirred through the stirring rod, then the hot air can make more sufficient contact with the pyrite, and the reaction speed of materials is further increased; therefore, the roasting efficiency and the reaction uniformity can be improved.

Description

Technical Field

[0001] This utility model relates to the field of pyrite fluidized bed roasting technology, specifically a pyrite fluidized bed roasting device. Background Technology

[0002] The pyrite fluidized bed roasting unit is a device based on solid fluidization technology used to roast pyrite to produce sulfur dioxide gas. It is mainly used in the sulfuric acid manufacturing industry. Pyrite is an important raw material for sulfuric acid production, and its roasting process is a key step in sulfuric acid production.

[0003] In traditional fluidized bed furnaces, the contact between the gas and pyrite particles is not sufficiently uniform, and poor gas-solid contact exists in some areas. This results in the pyrite not reacting fully and the roasting being incomplete. This not only affects the quality and yield of raw materials for subsequent sulfuric acid production but also reduces the overall reaction efficiency. Therefore, those skilled in the art have provided a fluidized bed furnace roasting device for pyrite to solve the problems mentioned in the background art. Utility Model Content

[0004] The purpose of this invention is to provide a fluidized bed roasting apparatus for pyrite to solve the problems mentioned in the background art.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A fluidized bed roasting apparatus for pyrite includes a roasting furnace. A discharge valve is connected to the bottom surface of the roasting furnace, and a feed hopper is connected to the upper surface of the roasting furnace. A spiral guide plate is connected inside the roasting furnace, and a filter plate is connected to the inner ring of the spiral guide plate. An air inlet pipe is connected to the outer surface of the roasting furnace, and an exhaust pipe is connected to the upper surface of the roasting furnace. A sealed bearing is embedded in the inner top wall of the roasting furnace, and a connecting rod is connected to the inner ring of the sealed bearing. A drive motor is installed at the top of the connecting rod, and a set of equidistantly arranged stirring rods are connected to the outer surface of the connecting rod.

[0007] As a further improvement of this utility model: the interior of the roasting furnace is filled with a heat insulation layer, which is made of rock wool board.

[0008] As a further improvement of this utility model: the outer shell of the roasting furnace is made of carbon steel, and the interior of the roasting furnace is connected with alloy steel partitions.

[0009] As a further improvement of this utility model: the upper surface of the roasting furnace is connected to an L-shaped connecting frame, and the bottom surface of the L-shaped connecting frame is connected to the upper surface of the drive motor.

[0010] As a further improvement of this utility model: the outer surface of the exhaust pipe is connected to a splicing plate, and a set of splicing holes are opened inside the splicing plate.

[0011] As a further improvement of this utility model: a temperature sensor is installed on the inner top wall of the roasting furnace, and a control box is installed on the outer surface of the roasting furnace.

[0012] As a further improvement of this utility model: the front of the roasting furnace is connected to a mounting base, and the front of the mounting base is equipped with a running indicator light.

[0013] As a further embodiment of this utility model: a connecting ring is connected to the outer surface of the roasting furnace, a set of support legs is connected to the bottom surface of the connecting ring, a mounting plate is connected to the bottom end of each support leg, and a set of mounting holes is opened inside each mounting plate.

[0014] Compared with the prior art, the beneficial effects of this utility model are:

[0015] This fluidized bed roasting device for pyrite uses a spiral guide plate and an air inlet pipe to guide the hot gas into a spiral motion inside the roasting furnace. This prolongs the residence time of the hot gas inside the furnace. Subsequently, a drive motor can rotate the connecting rod and the stirring rod, which in turn agitates the pyrite inside the furnace. This allows for more thorough contact between the hot gas and the pyrite, further promoting the reaction rate of the material and thus improving roasting efficiency and reaction uniformity. Attached Figure Description

[0016] Figure 1 A three-dimensional structural schematic diagram of a fluidized bed roasting apparatus for pyrite;

[0017] Figure 2 A side view of a fluidized bed roasting apparatus for pyrite;

[0018] Figure 3 An overhead sectional view of a fluidized bed roasting apparatus for pyrite;

[0019] Figure 4 A cross-sectional view of a fluidized bed roasting apparatus for pyrite;

[0020] Figure 5 A fluidized bed roasting apparatus for pyrite. Figure 4 Enlarged structural diagram at point A in the middle.

[0021] In the diagram: 1. Roasting furnace; 2. Discharge valve; 3. Feed hopper; 4. Spiral guide plate; 5. Filter plate; 6. Air inlet pipe; 7. Exhaust pipe; 8. Sealed bearing; 9. Connecting rod; 10. Drive motor; 11. Stirring rod; 12. L-shaped connecting frame; 13. Splicing plate; 14. Splicing hole; 15. Insulation layer; 16. Alloy steel partition; 17. Temperature sensor; 18. Control box; 19. Mounting base; 20. Running indicator light; 21. Connecting ring; 22. Support leg; 23. Mounting plate; 24. Mounting hole. Detailed Implementation

[0022] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please see Figures 1-5In this embodiment of the present invention, a fluidized bed roasting apparatus for pyrite includes a roasting furnace 1. A discharge valve 2 is connected to the bottom surface of the roasting furnace 1, and a feed hopper 3 is connected to the upper surface of the roasting furnace 1. A spiral guide plate 4 is connected inside the roasting furnace 1, and a filter plate 5 is connected to the inner ring of the spiral guide plate 4. An air inlet pipe 6 is connected to the outer surface of the roasting furnace 1, and an exhaust pipe 7 is connected to the upper surface of the roasting furnace 1. A sealed bearing 8 is embedded in the inner top wall of the roasting furnace 1, and a connecting rod 9 is connected to the inner ring of the sealed bearing 8. A drive motor 10 is installed at the top of the connecting rod 9, and a set of equidistant stirring rods 11 are connected to the outer surface of the connecting rod 9. The spiral guide plate 4 allows the hot air to move in a spiral motion inside the roasting furnace 1, thereby increasing the residence time of the hot air inside the roasting furnace 1 and enabling more thorough contact between the pyrite and the hot air, thus improving the uniformity of the pyrite roasting.

[0025] The interior of the roasting furnace 1 is filled with a heat insulation layer 15, which is made of rock wool board. The outer shell of the roasting furnace 1 is made of carbon steel. The interior of the roasting furnace 1 is connected with an alloy steel partition 16. An L-shaped connecting frame 12 is connected to the upper surface of the roasting furnace 1. The bottom surface of the L-shaped connecting frame 12 is connected to the upper surface of the drive motor 10. The outer surface of the exhaust pipe 7 is connected with a splicing plate 13. A set of splicing holes 14 are opened inside the splicing plate 13. The heat insulation layer 15 can effectively reduce the heat loss inside the roasting furnace 1, reduce energy consumption, and avoid the safety hazards caused by excessive surface temperature of the roasting furnace 1. The combination of the carbon steel material of the roasting furnace 1 and the alloy steel partition 16 can not only ensure the strength and durability of the furnace body, but also enable the roasting furnace 1 to withstand high temperature and internal pressure, extending its service life. The combination of the splicing plate 13 and the splicing holes 14 can facilitate the installation of the exhaust pipe 7 with external processing equipment by the staff.

[0026] A temperature sensor 17 is installed on the inner top wall of the roasting furnace 1. A control box 18 is installed on the outer surface of the roasting furnace 1. A mounting base 19 is connected to the front of the roasting furnace 1. An indicator light 20 is installed on the front of the mounting base 19. A connecting ring 21 is connected to the outer surface of the roasting furnace 1. A set of support legs 22 is connected to the bottom of the connecting ring 21. A mounting plate 23 is connected to the bottom of each support leg 22. A set of mounting holes 24 are opened inside each mounting plate 23. The temperature sensor 17 can monitor the temperature inside the furnace in real time. The indicator light 20 allows the operator to intuitively understand the operating status of the equipment and promptly detect and deal with problems. The mounting plate 23 and the mounting holes 24 make it easy for the staff to fix the device to the ground.

[0027] The working principle of this utility model is as follows: When using this device, the operator adds pyrite into the roasting furnace 1 through the feed hopper 3. Then, the drive motor 10 drives the connecting rod 9 and the stirring rod 11 to rotate, thereby stirring the pyrite inside the roasting furnace 1. At the same time, the air inlet pipe 6 is connected to the external hot air equipment, so that hot air enters the roasting furnace 1. The spiral guide plate 4 makes the hot air spiral inside the roasting furnace 1, thereby making full contact between the hot air and the pyrite inside the roasting furnace 1, thus promoting the roasting reaction of the pyrite. At this time, the roasted material is discharged from the outside of the roasting furnace 1 through the discharge valve 2, and the gas produced by the reaction is discharged into the external processing equipment through the exhaust pipe 7. The above is the complete operation process of this device.

[0028] The above description is merely a preferred embodiment of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the technical scope disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model. It is obvious to those skilled in the art that this utility model is not limited to the details of the above exemplary embodiments, and that it can be implemented in other specific forms without departing from the spirit or basic characteristics of this utility model. Therefore, the embodiments should be considered exemplary and non-limiting in all respects. The scope of this utility model is defined by the appended claims rather than the foregoing description, and thus all variations falling within the meaning and scope of equivalent elements of the claims are intended to be included within this utility model. No reference numerals in the claims should be construed as limiting the scope of the claims.

[0029] Furthermore, it should be understood that although this specification describes embodiments, not every embodiment contains only one independent technical solution. This narrative style is merely for clarity. Those skilled in the art should consider the specification as a whole, and the technical solutions in each embodiment can also be appropriately combined to form other embodiments that can be understood by those skilled in the art.

Claims

1. A fluidized bed roasting apparatus for pyrite, comprising a roasting furnace (1), characterized in that, The bottom surface of the roasting furnace (1) is connected to a discharge valve (2), the upper surface of the roasting furnace (1) is connected to a feed hopper (3), the interior of the roasting furnace (1) is connected to a spiral guide plate (4), the inner ring of the spiral guide plate (4) is connected to a filter plate (5), the outer surface of the roasting furnace (1) is connected to an air inlet pipe (6), the upper surface of the roasting furnace (1) is connected to an exhaust pipe (7), the inner top wall of the roasting furnace (1) is inlaid with a sealed bearing (8), the inner ring of the sealed bearing (8) is connected to a connecting rod (9), the top of the connecting rod (9) is equipped with a drive motor (10), and the outer surface of the connecting rod (9) is connected to a set of equally spaced stirring rods (11).

2. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, The interior of the roasting furnace (1) is filled with a heat insulation layer (15), which is made of rock wool board.

3. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, The outer shell of the roasting furnace (1) is made of carbon steel, and the interior of the roasting furnace (1) is connected with an alloy steel partition (16).

4. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, The upper surface of the roasting furnace (1) is connected to an L-shaped connecting frame (12), and the bottom surface of the L-shaped connecting frame (12) is connected to the upper surface of the drive motor (10).

5. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, The outer surface of the exhaust pipe (7) is connected to a splicing plate (13), and a set of splicing holes (14) are opened inside the splicing plate (13).

6. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, A temperature sensor (17) is installed on the inner top wall of the roasting furnace (1), and a control box (18) is installed on the outer surface of the roasting furnace (1).

7. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, The front of the roasting furnace (1) is connected to a mounting base (19), and a running indicator light (20) is mounted on the front of the mounting base (19).

8. The pyrite fluidized bed roasting apparatus according to claim 1, characterized in that, The outer surface of the roasting furnace (1) is connected to a connecting ring (21), and the bottom surface of the connecting ring (21) is connected to a set of support legs (22). The bottom end of each support leg (22) is connected to a mounting plate (23), and each mounting plate (23) has a set of mounting holes (24) inside.

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