High-efficiency mixing device for oxygen-enriched roasting of pyrite

Abstract

The utility model relates to chemical metallurgical equipment technical field, concretely, relates to pyrite oxygen rich roasting high -efficient mixing device, including roasting furnace main part, and the outside of roasting furnace main part is provided with oxygen rich gas source air inlet cover, and the air outlet end fixed mounting of oxygen rich gas source air inlet cover has the air inlet pipe, and the end of air inlet pipe stretches into to the bottom of roasting furnace main part and fixed mounting has the end pipe, and the end of end pipe is provided with a plurality of concentric annular pipe settings, and the two annular pipes adjacent to each other all are linked through the through pipe, and the bottom of annular pipe is provided with a plurality of air outlet holes, and the top of roasting furnace main part is provided with vertical pipe, and is provided with screening cylinder and crushing cylinder on vertical pipe, and is provided with screen cloth in screening cylinder, and is provided with the crushing roller for crushing the big block material after screening and filtering of screen cloth in crushing cylinder. The utility model can carry out crushing and even gas distribution operation, and promote roasting efficient operation.

Description

Technical Field

[0001] This utility model relates to the field of chemical and metallurgical equipment technology, specifically to a high-efficiency mixing device for oxygen-enriched roasting of pyrite. Background Technology

[0002] Oxygen-enriched roasting of pyrite is a core step in the acid production industry. Its reaction efficiency depends on the particle size of the pyrite powder and the uniformity of the mixing of oxygen-enriched gas, which directly affects the sulfur conversion rate and subsequent acid production capacity. Oxygen-enriched roasting of pyrite is usually carried out in a corresponding roasting furnace. There are many types of roasting furnaces on the market. In most cases, the material is directly fed into the furnace body and then oxygen-enriched gas is blown in through the air inlet pipe on the furnace body to achieve the effect of oxygen-enriched roasting.

[0003] However, the aforementioned roasting furnace still has some shortcomings in use. For example, during the feeding process, all materials, regardless of size, are added at once, which makes it difficult for large pieces of material to fully contact the oxygen-enriched gas, affecting the roasting effect. In addition, although a single air inlet pipe can complete the air intake operation, the gas is generally consumed near the air inlet pipe, resulting in uneven contact between the oxygen-enriched gas and the material in different parts, affecting the mixing effect of the oxygen-enriched gas and the material, and further affecting the roasting effect. In view of this, we propose a high-efficiency mixing device for oxygen-enriched roasting of pyrite. Utility Model Content

[0004] The purpose of this invention is to provide an efficient mixing device for oxygen-enriched roasting of pyrite, so as to solve the defects mentioned in the background art.

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

[0006] A high-efficiency mixing device for oxygen-enriched roasting of pyrite includes a roasting furnace body. An oxygen-enriched source inlet hood is installed on the outside of the roasting furnace body. An inlet pipe is fixedly installed at the outlet end of the oxygen-enriched source inlet hood. The end of the inlet pipe extends into the bottom of the roasting furnace body and is fixedly installed with an end pipe. Multiple concentric annular pipes are provided at the end of the end pipe. Adjacent annular pipes are connected by a guide pipe. Multiple air outlets are provided at the bottom of the annular pipes. A vertical pipe is provided at the top of the roasting furnace body. A screening cylinder and a crushing cylinder are provided on the vertical pipe. A screen is provided inside the screening cylinder. A crushing roller is provided inside the crushing cylinder for crushing large pieces of material filtered by the screen.

[0007] Preferably, a plurality of support blocks are fixedly installed at the bottom of the roasting furnace body, and the height of the support blocks is between 3cm and 5cm.

[0008] Preferably, the end pipe is connected to the outermost annular pipe, and multiple annular pipes are installed above the grate inside the roasting furnace body;

[0009] This design allows the grate inside the roasting furnace to support the annular tube, and because the grate has a porous structure, it will not obstruct the air outlet.

[0010] Preferably, a first discharge hopper is fixedly installed at the bottom of the screening cylinder, and a second discharge hopper is fixedly installed at the bottom of the crushing cylinder. The bottom ends of both the first discharge hopper and the second discharge hopper are fixedly installed on the vertical pipe.

[0011] This setting helps to gather materials, making feeding smoother.

[0012] Preferably, the screen is a mesh plate structure, and the screen is inclined downward at 45 degrees to 60 degrees;

[0013] This setting enables the screening of incoming materials.

[0014] Preferably, a feed hopper is fixedly installed at the inclined material discharge end of the screen, the inclination angle of the feed hopper is the same as the inclination angle of the screen, and the discharge end of the feed hopper extends into the crushing cylinder.

[0015] This setting enables the conveying of large pieces of material to the crushing drum for crushing.

[0016] Preferably, the crushing roller is located below the feed hopper, and the number of crushing rollers is two.

[0017] Preferably, the crushing roller and the crushing cylinder are rotatably connected by a rotating shaft, and a gear is fixedly installed at the end of the rotating shaft. The two gears mesh with each other, and a drive motor is coaxially arranged at the end of one of the rotating shafts.

[0018] Compared with the prior art, the beneficial effects of this utility model are:

[0019] 1. This utility model uses a screening cylinder, a screen, a crushing cylinder, and crushing rollers. The screen screen screens the material, and large pieces of material enter the crushing cylinder through the feed hopper. The two crushing rollers driven by the drive motor crush the material, realizing the grading of the material and the refinement of large pieces of material. This avoids the problem of insufficient contact caused by the direct input of large pieces of material and achieves the effect of increasing the contact area between the material and the oxygen-enriched gas.

[0020] 2. This utility model, through the setting of an oxygen-enriched gas inlet hood, inlet pipe, end pipe, concentric annular pipe and guide pipe, allows oxygen-enriched gas to enter the annular pipe through the inlet pipe and end pipe, and to be evenly distributed between the annular pipes through the guide pipe, and then sprayed out from the bottom outlet hole. This achieves the uniform release of oxygen-enriched gas in multiple areas within the main body of the roasting furnace, avoids the problem of local gas consumption caused by single air intake, and achieves the effect of improving the uniformity of mixing oxygen-enriched gas and materials.

[0021] 3. This utility model, through the setting of a first discharge hopper at the bottom of the screening cylinder, a second discharge hopper at the bottom of the crushing cylinder, and a vertical pipe, allows the small pieces of material after screening and the crushed material to converge into the vertical pipe through their respective discharge hoppers, and then enter the main body of the roasting furnace. With the gas sprayed out by the annular pipe supported by the grate, the refined material and the uniformly distributed gas are brought into efficient contact, thereby improving the oxygen-enriched roasting reaction efficiency and sulfur conversion rate of pyrite. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0023] Figure 2 This is one of the partial structural schematic diagrams of this utility model;

[0024] Figure 3 This is the second partial structural schematic diagram of the present utility model;

[0025] Figure 4 This is the third partial structural schematic diagram of this utility model;

[0026] The meanings of the labels in the diagram are as follows:

[0027] 1. Main body of the roasting furnace; 10. Support pads;

[0028] 2. Oxygen-enriched air intake hood; 20. Air intake pipe; 21. End pipe; 22. Annular pipe; 23. Conductor pipe; 24. Air outlet;

[0029] 3. Screening cylinder; 30. First discharge hopper; 31. Screen; 32. Feed hopper; 33. Crushing cylinder; 34. Second discharge hopper; 35. Vertical pipe; 36. Crushing roller; 361. Rotating shaft; 37. Gear; 38. Drive motor. Detailed Implementation

[0030] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0031] In the description of this utility model, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc., indicating the orientation or positional relationship are based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or component 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.

[0032] Please see Figures 1-4 This utility model provides a technical solution: a high-efficiency mixing device for oxygen-enriched roasting of pyrite, including a roasting furnace body 1. An oxygen-enriched gas inlet hood 2 is provided on the outside of the roasting furnace body 1. An inlet pipe 20 is fixedly installed at the outlet end of the oxygen-enriched gas inlet hood 2. The end of the inlet pipe 20 extends into the bottom of the roasting furnace body 1 and is fixedly installed with an end pipe 21. Multiple concentric annular pipes 22 are provided at the end of the end pipe 21. Two adjacent annular pipes 22 are connected by a guide pipe 23. Multiple outlet holes 24 are provided at the bottom of the annular pipes 22. Oxygen-enriched gas enters the end pipe 21 through the inlet hood 2 and the inlet pipe 20, is distributed to each annular pipe 22 through the guide pipe 23, and is then sprayed out through the outlet holes 24, so that the gas is evenly released in multiple areas in the furnace, avoiding the problem of local consumption of gas from a single inlet and improving the mixing uniformity of gas and material.

[0033] In this embodiment, a vertical pipe 35 is provided at the top of the roasting furnace body 1. A screening cylinder 3 and a crushing cylinder 33 are provided on the vertical pipe 35. A screen 31 is provided inside the screening cylinder 3. A crushing roller 36 is provided inside the crushing cylinder 33 for crushing large pieces of material after screening by the screen 31. The screen 31 screens the material, and the large pieces of material enter the crushing cylinder 33 and are refined by the crushing roller 36, so that the particle size of the material tends to be uniform. This avoids the problem of insufficient contact caused by direct feeding of large pieces of material and increases the contact area between the material and the oxygen-enriched gas.

[0034] like Figure 1 As shown, multiple support blocks 10 are fixedly installed at the bottom of the roasting furnace body 1. The height of the support blocks 10 is between 3cm and 5cm, so that the bottom of the furnace body is kept at a distance from the ground, which facilitates the installation and maintenance of the equipment at the bottom of the furnace body and the cleaning of the ground, while also improving the stability of the furnace body.

[0035] Specifically, the end pipe 21 is connected to the outermost annular pipe 22. Multiple annular pipes 22 are installed above the grate inside the main body 1 of the roasting furnace. The grate supports the annular pipes 22 and the porous structure does not block the gas outlet 24, which not only ensures the stability of the annular pipes 22 installation, but also ensures the smooth spraying of oxygen-enriched gas.

[0036] In this embodiment, the air outlet 24 is located at the bottom to prevent material from subsequently entering the air outlet 24 and blocking it.

[0037] like Figure 1 and Figure 3 As shown, a first discharge hopper 30 is fixedly installed at the bottom of the screening cylinder 3, and a second discharge hopper 34 is fixedly installed at the bottom of the crushing cylinder 33. The bottom ends of the first discharge hopper 30 and the second discharge hopper 34 are both fixedly installed on the vertical pipe 35. The small pieces of material after screening and the crushed material are respectively collected in the vertical pipe 35 through the discharge hopper, so that the material is concentrated and enters the main body of the roasting furnace 1, avoiding material scattering and ensuring the smoothness of feeding.

[0038] like Figure 1 and Figure 3 As shown, the screen 31 is a mesh plate structure. The screen 31 is set to tilt downward at 45 degrees to 60 degrees. The tilt angle uses gravity to guide the material to slide. The mesh structure realizes the effective separation of materials of different sizes, making the screening operation efficient and thorough, laying the foundation for subsequent crushing and mixing.

[0039] like Figure 1 and Figure 3 As shown, a feed hopper 32 is fixedly installed at the inclined material discharge end of the screen 31. The inclination angle of the feed hopper 32 is the same as that of the screen 31. The discharge end of the feed hopper 32 extends into the crushing cylinder 33, so that the large pieces of material screened out can be accurately and without omission fed into the crushing cylinder 33, ensuring the continuity of the crushing process.

[0040] It is worth noting that the crushing roller 36 is located below the feed hopper 32, and there are two crushing rollers 36. The crushing roller 36 is rotatably connected to the crushing cylinder 33 through a rotating shaft 361. A gear 37 is fixedly installed at the end of the rotating shaft 361, and the two gears 37 mesh with each other. A drive motor 38 is coaxially installed at the end of one of the rotating shafts 361. The drive motor 38 drives the two crushing rollers 36 to rotate relative to each other through the rotating shaft 361 and the gear 37, which crushes the large pieces of material falling from the feed hopper 32, so that the large pieces of material are quickly refined to a suitable particle size, thereby improving the crushing efficiency and effect.

[0041] Finally, it should be noted that the drive motor 38, the corresponding control system, and the external power supply of this utility model are all general standard parts or parts known to those skilled in the art. Their structure and principle can be known to those skilled in the art through technical manuals or conventional experimental methods. In the spare parts of this device, all the above-mentioned electrical components, which refer to power elements, electrical components, and the matching controller and power supply, are connected by wires. The specific connection method should refer to the working principle of this utility model. The electrical connections between each electrical component are completed in the order of operation. The detailed connection methods are all technologies known in the art.

[0042] When the pyrite oxygen-enriched roasting high-efficiency mixing device of this utility model is in use, the drive motor 38 is started, and the motor drives the two crushing rollers 36 to rotate relative to each other via the rotating shaft 361 and the meshing gear 37. Pyrite material is fed into the screening cylinder 3. The material is screened by the mesh screen 31. Small pieces of material fall into the first discharge hopper 30, and large pieces of material are fed into the crushing rollers 36 for crushing via the feed hopper 32. After crushing, the material enters the second discharge hopper 34. The two types of materials finally converge into the roasting furnace body 1 through the vertical pipe 35.

[0043] Connect the oxygen-enriched gas inlet hood 2 to the external oxygen-enriched gas delivery pipeline. The oxygen-enriched gas enters the end pipe 21 at the bottom of the roasting furnace body 1 through the inlet pipe 20, and then flows into the outermost annular pipe 22. It is distributed to each concentric annular pipe 22 through the guide pipe 23. The annular pipe 22 is supported by the grate. Since the bottom outlet 24 is set downward and is not blocked by the grate, the gas is evenly sprayed out and diffuses upward, contacting the falling material. The evenly sprayed oxygen-enriched gas fully contacts the material with uniform particle size for roasting.

[0044] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A high-efficiency mixing device for oxygen-enriched roasting of pyrite, comprising a roasting furnace body (1), characterized in that: The roasting furnace body (1) is provided with an oxygen-enriched gas inlet hood (2) on the outside. An inlet pipe (20) is fixedly installed at the outlet end of the oxygen-enriched gas inlet hood (2). The end of the inlet pipe (20) extends into the bottom of the roasting furnace body (1) and is fixedly installed with an end pipe (21). The end of the end pipe (21) is provided with a plurality of concentrically arranged annular pipes (22). Two adjacent annular pipes (22) are connected by a guide pipe (23). The bottom of the annular pipe (22) is provided with a plurality of gas outlet holes (24). The top of the roasting furnace body (1) is provided with a vertical pipe (35). A screening cylinder (3) and a crushing cylinder (33) are provided on the vertical pipe (35). A screen (31) is provided inside the screening cylinder (3). A crushing roller (36) is provided inside the crushing cylinder (33) for crushing large pieces of material after screening by the screen (31).

2. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 1, characterized in that: The bottom of the roasting furnace body (1) is fixedly installed with multiple support pads (10), and the height of the support pads (10) is between 3cm and 5cm.

3. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 1, characterized in that: The end pipe (21) is connected to the outermost annular pipe (22), and multiple annular pipes (22) are installed above the grate inside the roasting furnace body (1).

4. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 1, characterized in that: The bottom end of the screening cylinder (3) is fixedly installed with a first discharge hopper (30), and the bottom of the crushing cylinder (33) is fixedly installed with a second discharge hopper (34). The bottom ends of the first discharge hopper (30) and the second discharge hopper (34) are both fixedly installed on the vertical pipe (35).

5. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 1, characterized in that: The screen (31) is a mesh plate structure, and the screen (31) is inclined downward at 45 degrees to 60 degrees.

6. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 1, characterized in that: The inclined material discharge end of the screen (31) is fixedly equipped with a feed hopper (32), the inclination angle of the feed hopper (32) is the same as the inclination angle of the screen (31), and the discharge end of the feed hopper (32) extends into the crushing cylinder (33).

7. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 6, characterized in that: The crushing roller (36) is located below the feed hopper (32), and there are two crushing rollers (36).

8. The high-efficiency mixing device for oxygen-enriched roasting of pyrite according to claim 7, characterized in that: The crushing roller (36) and the crushing cylinder (33) are rotatably connected by a rotating shaft (361). A gear (37) is fixedly installed at the end of the rotating shaft (361), and the two gears (37) mesh with each other. A drive motor (38) is coaxially arranged at the end of one of the rotating shafts (361).

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