A blast furnace ash calcining device for producing secondary zinc oxide

Abstract

The utility model discloses a blast furnace ash calcining device of secondary zinc oxide production, incline and set rotary kiln, the kiln head of rotary kiln is provided with feed inlet and combustor respectively, and the kiln tail of rotary kiln is provided with dust catcher, the bottom of rotary kiln is provided with drive mechanism, and the upper end of rotary kiln is equipped with knocking mechanism, and knocking mechanism includes mounting bracket, mounting plate, rotating electrical machine, a plurality of rotating shafts, a plurality of connecting rods no.

Description

Technical Field

[0001] This utility model relates to the field of zinc oxide technology, specifically to a blast furnace ash calcination device for producing zinc oxide. Background Technology

[0002] Zinc oxide belongs to the solid waste treatment industry. It is extracted from blast furnace ash, a waste material from steel plants, through high-temperature oxidation. The process involves feeding blast furnace ash into a rotary volatilization kiln via a belt conveyor. The temperature in the reaction zone of the volatilization kiln is 1100~1200℃, and the temperature of the flue gas at the kiln tail is 500±20℃. The blast furnace ash is heated by combustion in the rotary kiln using its own calorific value and an external heat source, causing the metallic Zn in the material to volatilize and enter the gas phase. In the gas phase, it is oxidized into coarse zinc oxide dust, which is then drawn out by an induced draft fan and collected in the dust bin of a high-efficiency bag filter, becoming coarse zinc oxide powder.

[0003] Ring formation can occur during rotary kiln production due to the ring-shaped adhesion of furnace charge to the inner wall of the high-temperature zone. This phenomenon can be categorized into two types: mild adhesion is called kiln skin; when the adhesion becomes severe enough to affect the normal operation of the rotary kiln, it is called ring formation. Once ring formation occurs, the kiln must be shut down for treatment. Manual handling is not only labor-intensive and inefficient, but also prone to safety hazards. Utility Model Content

[0004] To address the above deficiencies, this utility model provides a blast furnace ash calcination device for the production of secondary zinc oxide, thereby solving the problem of ring formation during blast furnace ash calcination.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A calcination device for producing zinc oxide from blast furnace ash includes an inclined rotary kiln, wherein the kiln head is provided with a feed inlet and a burner, the kiln tail is provided with a dust collector, the bottom of the rotary kiln is provided with a drive mechanism, and the upper end of the rotary kiln is provided with a striking mechanism.

[0007] The striking mechanism includes a mounting frame, a mounting plate, a rotary motor, several rotating shafts, several connecting rods (first and second), several fixed sleeves, and several striking rods. The mounting frame is located behind the rotary kiln. The mounting plate is mounted on the upper end of the mounting frame. The rotary motor is mounted on the rear end of the mounting plate. Several rotating shafts are movably inserted into the upper end of the mounting plate. Several connecting rods (first) are movably mounted on the front end of the mounting plate. Several connecting rods (second) are hinged to the bottom of several connecting rods (first). Several fixed sleeves are mounted on the mounting plate. Several striking rods are movably inserted into several fixed sleeves, and their upper ends are respectively hinged to the corresponding connecting rods (second).

[0008] Furthermore, the drive mechanism includes a set of bases, a drive motor, a pinion, a large gear ring, a set of tires, and a set of support rollers. The set of bases is installed on the ground, the drive motor is installed on the left base, the pinion is installed on the rotating end of the drive motor, the large gear ring is installed on the left side of the outer surface of the rotary kiln and meshes with the pinion, the set of tires is installed on both sides of the outer surface of the rotary kiln, and the set of support rollers is installed on the set of bases and fits against the set of tires. The drive mechanism drives the rotary kiln to rotate slowly, causing the blast furnace ash to move to the left and making the blast furnace ash heat more evenly. The set of tires and the set of support rollers can play a guiding role.

[0009] Furthermore, several rotating shafts are equipped with actuating blocks at their front ends, and several connecting rods are each provided with a corresponding fixing block. The rotating shafts rotate clockwise, and the actuating blocks actuate the fixing blocks, thereby driving the connecting rods to rotate.

[0010] Furthermore, several striking rods are equipped with stops, and springs are fitted on the outer surfaces of several striking rods. When connecting rod one rotates, it pulls the striking rod through connecting rod two. At this time, the spring is in a compressed state. When connecting rod one rotates to the right, it is reset by the spring tension, and the fixed block on connecting rod one disengages from the moving block. At the same time, the striking rod strikes the outer surface of the rotary kiln.

[0011] Furthermore, the rotary motor is connected to a rotating shaft on the left side via a transmission chain, and adjacent sets of rotating shafts are connected via a transmission chain, so that the rotary motor drives several rotating shafts to rotate synchronously.

[0012] Furthermore, the dust collector is provided with a smoke exhaust port at the upper end for discharging the generated smoke and dust and collecting it subsequently, and a slag outlet at the lower end for discharging the slag generated during combustion.

[0013] This utility model provides a calcination device for producing secondary zinc oxide from blast furnace ash, which has the following advantages: by setting a driving mechanism at the bottom of the rotary kiln, the rotary kiln can be driven to rotate slowly to heat and burn the blast furnace ash, which facilitates the extraction of zinc-containing substances from the high-temperature oxidation. In conjunction with the striking mechanism, several striking rods are used to repeatedly hammer the outer surface of the rotary kiln, which can effectively prevent the ring-shaped adhesion and agglomeration of furnace material on the high-temperature inner wall of the rotary kiln, reduce manual handling, and improve the calcination effect of blast furnace ash. Attached Figure Description

[0014] Figure 1 This is a schematic diagram of a blast furnace ash calcination device for producing secondary zinc oxide according to the present invention.

[0015] Figure 2 This is an external view of the rotary kiln described in this utility model.

[0016] Figure 3This is a rear view of the mounting plate described in this utility model.

[0017] Figure 4 This is a schematic diagram of the striking mechanism of this utility model.

[0018] Figure 5 This is a schematic diagram of the striking rod transmission of this utility model.

[0019] In the diagram: 1. Rotary kiln; 2. Feed inlet; 3. Burner; 4. Dust collector; 5. Mounting frame; 6. Mounting plate; 7. Rotary motor; 8. Rotating shaft; 9. Connecting rod one; 10. Connecting rod two; 11. Fixing sleeve; 12. Striking rod; 13. Base; 14. Drive motor; 15. Pinion; 16. Large gear ring; 17. Tire; 18. Support roller; 19. Actuating block; 20. Fixing block; 21. Stop block; 22. Spring; 23. Transmission chain one; 24. Transmission chain two; 25. Exhaust port; 26. Slag outlet. Detailed Implementation

[0020] To make the above-mentioned objects, features, and advantages of this utility model more apparent and understandable, the specific embodiments of this utility model will be described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a full understanding of this utility model. However, this utility model can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this utility model. Therefore, this utility model is not limited to the specific embodiments disclosed below.

[0021] Please see Figures 1 to 5 As shown in the embodiment of this application, a blast furnace ash calcination device for the production of secondary zinc oxide is provided, including an inclined rotary kiln 1. The kiln head of the rotary kiln 1 is respectively provided with a feed inlet 2 and a burner 3, and the kiln tail of the rotary kiln 1 is provided with a dust collector 4. A drive mechanism is provided at the bottom of the rotary kiln 1, and a striking mechanism is provided at the upper end of the rotary kiln 1. The striking mechanism includes a mounting frame 5, a mounting plate 6, a rotary motor 7, several rotating shafts 8, several connecting rods 1-9, several connecting rods 2-10, several fixed sleeves 11, and several striking rods 12. The mounting frame 5 is located behind the rotary kiln 1. The mounting plate 6 is installed on the upper end of the mounting frame 5. The rotary motor 7 is installed at the rear end of the mounting plate 6. Several rotating shafts 8 are movably inserted into the upper end of the mounting plate 6 through fastening bearings. Several connecting rods 1 9 are movably installed at the front end of the mounting plate 6. Several connecting rods 2 10 are hinged to the bottom of several connecting rods 1 9. Several fixing sleeves 11 are installed on the mounting plate 6. Several striking rods 12 are movably inserted into several fixing sleeves 11, and their upper ends are respectively hinged to the corresponding connecting rods 2 10.

[0022] In this embodiment, the horizontal plane of the kiln head of the rotary kiln 1 is higher than that of the kiln tail, with an inclination angle of 15°. After the blast furnace ash is added into the rotary kiln 1 through the feed inlet 2, the rotary kiln 1 is driven to rotate slowly to heat and burn the blast furnace ash, which facilitates the extraction of zinc-containing substances from the high-temperature oxidation. Several connecting rods 9 are movably mounted on the mounting plate 6. The rotary motor 7 drives several rotating shafts 8 to rotate synchronously, and through several connecting rods 9 and several connecting rods 10, several striking rods 12 reciprocate to hammer the outer surface of the rotary kiln 1. This can effectively prevent the ring-shaped adhesion and ring formation of the furnace material on the high-temperature inner wall of the rotary kiln 1, reduce manual handling, and improve the calcination effect of the blast furnace ash.

[0023] In some embodiments, the drive mechanism includes a set of bases 13, a drive motor 14, a pinion 15, a large gear ring 16, a set of tires 17, and a set of support rollers 18. The set of bases 13 is installed on the ground, the drive motor 14 is installed on the left side of the base 13, the pinion 15 is installed on the rotating end of the drive motor 14, the large gear ring 16 is installed on the left side of the outer surface of the rotary kiln 1 and meshes with the pinion 15, the set of tires 17 is installed on both sides of the outer surface of the rotary kiln 1, and the set of support rollers 18 is installed on the set of bases 13 and fits against the set of tires 17. After the drive motor 14 is reduced in speed by a reducer, it drives the large gear ring 16 and the rotary kiln 1 to rotate slowly through the pinion 15, causing the blast furnace ash in the rotary kiln 1 to move to the left and making the blast furnace ash more evenly heated. The set of tires 17 and the set of support rollers 18 can play a guiding role.

[0024] In some embodiments, and in conjunction with the appendix Figure 5 As shown, several rotating shafts 8 have actuating blocks 19 installed at their front ends, and several connecting rods 9 are respectively provided with corresponding fixing blocks 20. The rotating shafts 8 rotate clockwise, and the actuating blocks 19 actuate the fixing blocks 20, thereby driving the connecting rods 9 to rotate.

[0025] In some embodiments, and in conjunction with the appendix Figure 5 As shown, several striking rods 12 are each equipped with a stop block 21, and several striking rods 12 are each fitted with a spring 22 on their outer surface. When the connecting rod 9 rotates, the striking rods 12 are pulled by the connecting rod 10. At this time, the spring 22 is in a compressed state. When the connecting rod 9 rotates to the right, it is reset by the tension of the spring 22. The fixing block 20 on the connecting rod 9 disengages from the actuating block 19. At the same time, the striking rods 12 strike the outer surface of the rotary kiln 1.

[0026] In some embodiments, and aggregated appendix Figure 4 As shown, the rotary motor 7 is connected to a rotating shaft 8 on the left side via a transmission chain 23, and adjacent sets of rotating shafts 8 are connected via a transmission chain 24, so that the rotary motor 7 drives several rotating shafts 8 to rotate synchronously.

[0027] In some embodiments, the dust collector 4 is provided with a smoke exhaust port 25 at the upper end, which is used to discharge the generated smoke and dust and collect it subsequently, and a slag outlet 26 at the lower end, through which the slag generated by combustion is discharged.

[0028] The above technical solution only embodies the preferred technical solution of this utility model. Any changes that may be made by those skilled in the art to certain parts of it embody the principle of this utility model and fall within the protection scope of this utility model.

Claims

1. A calcination apparatus for producing blast furnace ash from zinc oxide, comprising an inclined rotary kiln (1), wherein the kiln head of the rotary kiln (1) is provided with a feed inlet (2) and a burner (3), and the kiln tail of the rotary kiln (1) is provided with a dust collector (4), characterized in that, The rotary kiln (1) is provided with a driving mechanism at the bottom and a striking mechanism at the top. The striking mechanism includes a mounting frame (5), a mounting plate (6), a rotary motor (7), several rotating shafts (8), several connecting rods (9), several connecting rods (10), several fixed sleeves (11), and several striking rods (12). The mounting frame (5) is located behind the rotary kiln (1). The mounting plate (6) is mounted on the upper end of the mounting frame (5). The rotary motor (7) is mounted on the rear end of the mounting plate (6). Several rotating shafts (8) are movably inserted into the upper end of the mounting plate (6). Several connecting rods (9) are movably installed in the front end of the mounting plate (6). Several connecting rods (10) are hinged to the bottom of several connecting rods (9). Several fixed sleeves (11) are mounted on the mounting plate (6). Several striking rods (12) are movably inserted into several fixed sleeves (11), and their upper ends are respectively hinged to the corresponding connecting rods (10).

2. The blast furnace ash calcination device for producing secondary zinc oxide according to claim 1, characterized in that, The drive mechanism includes a set of bases (13), a drive motor (14), a pinion (15), a large gear ring (16), a set of tires (17), and a set of support rollers (18). The set of bases (13) is installed on the ground. The drive motor (14) is installed on the left side of the base (13). The pinion (15) is installed on the rotating end of the drive motor (14). The large gear ring (16) is installed on the left side of the outer surface of the rotary kiln (1) and meshes with the pinion (15). The set of tires (17) is installed on both sides of the outer surface of the rotary kiln (1). The set of support rollers (18) is installed on the set of bases (13) and fits against the set of tires (17).

3. The blast furnace ash calcination device for producing secondary zinc oxide according to claim 1, characterized in that, Several rotating shafts (8) have actuating blocks (19) installed at their front ends, and several connecting rods (9) are respectively provided with corresponding fixing blocks (20).

4. The blast furnace ash calcination device for producing secondary zinc oxide according to claim 3, characterized in that, A stop block (21) is installed on each of the several striking rods (12), and a spring (22) is fitted on the outer surface of each of the several striking rods (12).

5. The blast furnace ash calcination device for producing secondary zinc oxide according to claim 1, characterized in that, The rotary motor (7) is connected to a rotating shaft (8) on the left side by a transmission chain one (23), and adjacent rotating shafts (8) are connected by a transmission chain two (24).

6. The blast furnace ash calcination apparatus for producing secondary zinc oxide according to claim 1, characterized in that, The dust collector (4) is provided with a smoke exhaust port (25) at the upper end and a slag discharge port (26) at the lower end.

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