Dedusting ash cold-pressed pellet production device

Abstract

The utility model provides a dedusting ash cold-pressed pellet production device which comprises a pair of pressing rollers rotating oppositely, the pressing rollers are rotationally connected with a frame body fixed to the ground, a hopper fixed to the frame body is arranged above the pressing rollers, spraying boxes attached to the pressing rollers are arranged below the two pressing rollers correspondingly, and the spraying boxes are arranged below the pressing rollers correspondingly. Spraying pipes with upward openings are arranged in the spraying boxes, an atomizer used for atomizing a release agent is installed at the side end of each spraying box, and a mist outlet of the atomizer is communicated with the spraying pipes in the two spraying boxes through pipelines. According to the dedusting ash cold-pressed pellet production device, the release agent is sprayed and covered in the female die, so that pressed pellets can fall off from the female die more smoothly, and damage and adhesion of the pellets in the female die when the pellets fall off are reduced. And by spraying the release agent, the integrity of pellet compression molding can be improved, damage to the surface during pellet demolding is avoided, and residual accumulated materials in the female die are reduced.

Description

Technical Field

[0001] This application relates to dust collection ash pelletizing and recycling technology in ferroalloy production, and more particularly to a dust collection ash cold-pressed pelletizing production device. Background Technology

[0002] Ferroalloy production generates a large amount of dust. This dust is collected using dust removal equipment and then pressed into pellets to recover valuable metals such as iron and manganese. The recovered pellets can replace some of the iron ore raw materials, reducing the consumption of slag and lime while minimizing resource waste.

[0003] In existing cold-pressed pellet production of dust collector ash, pellets are pressed using a roller briquetting machine. This machine consists of a pair of opposing rotating pressure rollers, each with a mating hemispherical die. Mechanical pressure is used to press powdered material into pellets. However, in long-term, high-volume pellet production, existing cold-pressed pellet production equipment often experiences problems such as pellets sticking to the die, leading to difficulty in demolding and material buildup inside the die. This affects the yield of finished pellets, increases die wear, and shortens equipment lifespan. Utility Model Content

[0004] This application provides a dust removal cold-pressed pellet production device to solve the problems of pellet sticking and residual material accumulation in the die cavity and difficulty in demolding in existing cold-pressed pellet production devices.

[0005] This application provides a dust removal ash cold-pressed pellet production device, including a pair of opposing rotating pressure rollers, the pressure rollers being rotatably connected to a frame fixed on the ground, a hopper fixed to the frame above the pressure rollers, and a spray box fitted to each of the two pressure rollers below them. The spray box contains an upward-opening spray pipe, and an atomizer for atomizing a release agent is installed on the side of the spray box. The atomizer's outlet is connected to the spray pipe in the two spray boxes through pipes.

[0006] Optionally, each of the two spraying boxes is fixed with a partition, which separates the side of the spraying box near the material drop point into a separate cleaning chamber. A roller brush with its upper end extending into the concave mold of the pressure roller is rotatably connected in the cleaning chamber, and the roller brush is driven by a motor.

[0007] Optionally, the bottom of the roller brush is provided with an openable and closable door.

[0008] Optionally, the two spray booths form a drop channel for the pellets. Side plates are fixed on both sides of the channel. A grid-like buffer mechanism is fixed inside the drop channel enclosed by the side walls of the spray booths and the side plates. The buffer mechanism is composed of intersecting elastic ropes, and the diagonal length of the grid unit inside the buffer mechanism is equal to the diameter of the pellet.

[0009] The dust removal ash cold-pressed pellet production device provided in this application involves a pressure roller that, during rotation, circulates a mold cavity into a spraying box to be coated with a release agent. The mold cavity, after being coated with the release agent, is then engaged and disengaged by the rotation of the pressure roller. During this engagement and disengagement process, the material supplied from the hopper is processed into pellets. Spraying the release agent into the mold cavity allows the pressed pellets to detach more easily from the mold, reducing damage and adhesion within the mold cavity during detachment.

[0010] Applying a release agent improves the integrity of pellet compression molding, preventing surface damage during pellet demolding and reducing residual material buildup in the die. Furthermore, the release agent is atomized using an atomizer and applied to the die within the spray booth. This atomization method ensures a uniform, thin layer of release agent within the die, and the sealed spray booth effectively conserves release agent. Attached Figure Description

[0011] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0012] Figure 1 This is a schematic diagram of the structure of a dust removal and cold-pressed pellet production device provided in an embodiment of this application;

[0013] Figure 2 A dust removal cold-pressed pellet production apparatus provided in one embodiment of this application Figure 1 A sectional view;

[0014] Figure 3 This is a top view of the spray box of a dust removal cold-pressed pellet production apparatus provided in an embodiment of this application.

[0015] Explanation of reference numerals in the attached figures:

[0016] 1. Pressure roller; 2. Frame; 3. Hopper; 4. Spraying box; 5. Spraying pipe; 6. Atomizer; 7. Pipe; 8. Partition; 9. Roller brush; 10. Motor; 11. Box door; 12. Side plate; 13. Buffer mechanism. Detailed Implementation

[0017] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions in the embodiments of this application are described clearly and completely below. Obviously, the described embodiments are only some embodiments of this application, not all embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are also within the scope of protection of this application.

[0018] like Figures 1-3 As shown, one embodiment of this application provides a dust removal ash cold-pressed pellet production device, including a pair of opposing rotating pressure rollers 1, with mating dies on the rollers of the two pressure rollers 1. The pressure rollers 1 are rotatably connected to a frame 2 fixed on the ground. A hopper 3 fixed to the frame 2 is provided above the pressure rollers 1. Spraying boxes 4 are respectively provided below the two pressure rollers 1 and are fitted to them. Spraying pipes 5 with upward openings are provided inside the spraying boxes 4. An atomizer 6 for atomizing a release agent is installed on the side end of the spraying boxes 4. The atomizer 6 is connected to the spraying pipes 5 in the two spraying boxes 4 through pipes 7.

[0019] When in use, add the release agent into the atomizer 6, or connect it to the box containing the release agent. Use the atomizer 6 to atomize the release agent and discharge it from the spray pipe 5 into the spray box 4 through the pipe 7. The atomized release agent in the spray box 4 can evenly cover the concave mold above the spray box 4.

[0020] The mold cavity for applying the release agent is rotated from both sides to the top by rotating pressure rollers 1 and then brought together in the middle. The hopper 3 feeds material from the upper part between the two pressure rollers 1 via a feeding mechanism, injecting the material into the mold cavity before it comes together. As the mold cavities come together, the two opposing rotating pressure rollers 1 press the material supplied from the upper end into a spherical shape, and then separate the spherical balls as they continue to rotate, discharging them from the lower end. After the material is discharged, the mold cavity re-enters the spray box 4 via rotating pressure rollers 1. The pressure rollers 1 continuously rotate and circulate, pressing the material into spherical shapes, while simultaneously re-entering the spray box 4 to repeatedly apply the release agent.

[0021] In this embodiment, during the rotation of the pressure roller 1, the die is circulated into the spraying box 4 to be sprayed with a release agent. After being coated with the release agent, the die is joined and separated by the rotation of the pressure roller 1. During the joining and separation of the die, the material supplied by the hopper 3 is processed into pellets. Spraying the release agent into the die allows the pressed pellets to fall out of the die more smoothly, reducing damage and adhesion of the pellets inside the die during the detachment process.

[0022] Applying a release agent improves the integrity of pellet compression molding, avoids surface damage during pellet demolding, and reduces residual material accumulation in the die. Simultaneously, the release agent is atomized by the atomizer 6 and then applied to the die within the spray box 4. This atomization method ensures a uniform, thin layer of release agent is applied within the die, and the sealed spray box 4 effectively conserves release agent.

[0023] In one possible implementation, partitions 8 are fixed inside the two spraying boxes 4 respectively. The partitions 8 separate the side of the spraying box 4 near the material drop point into a separate cleaning chamber. A roller brush 9 is rotatably connected inside the cleaning chamber, and the upper end of the roller brush 9 can extend into the concave mold of the pressure roller 1. The roller brush 9 is driven by a motor 10.

[0024] Before spraying the release agent, the mold cavity is cleaned with a roller brush 9 to further avoid residual material accumulation inside the mold cavity and keep the mold cavity clean before spraying the release agent.

[0025] In one possible implementation, the roller brush 9 is provided with an openable and closable door 11 below it.

[0026] Opening the chamber door 11 allows for the cleaning of materials that have fallen into the cleaning chamber and materials that are stuck to the roller brush 9.

[0027] In one possible implementation, the two spray boxes 4 form a drop channel for the pellets, with side plates 12 fixed on both sides of the channel. A grid-like buffer mechanism 13 is fixed within the drop channel enclosed by the side walls of the spray box 4 and the side plates 12. The buffer mechanism 13 is composed of intersecting elastic ropes, and the diagonal length of the grid unit within the buffer mechanism 13 is equal to the diameter of the pellet.

[0028] A mesh-like buffer mechanism 13 is formed by using elastic ropes fixed between the opposite side walls of the spray box 4 and between the opposite side plates 12. This mechanism can buffer the pellets falling in the drop channel. After being buffered by the elastic ropes, the pellets fall from the mesh unit, which can prevent the pellets from being broken by impact during the fall and improve the pellet yield.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this application, and are not intended to limit them. Although this application has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this application.

Claims

1. A dust removal ash cold-pressed pellet production device, comprising a pair of opposing rotating pressure rollers (1), the pressure rollers (1) being rotatably connected to a frame (2) fixed on the ground, and a hopper (3) fixed to the frame (2) being provided above the pressure rollers (1), characterized in that: Below each of the two pressure rollers (1) is a spray box (4) that fits against them. Inside the spray box (4) is a spray pipe (5) with the opening facing upward. On the side of the spray box (4) is an atomizer (6) for atomizing the release agent. The atomizer (6) has its outlet connected to the spray pipe (5) in the two spray boxes (4) through a pipe (7).

2. The dust removal ash cold-pressed pellet production device according to claim 1, characterized in that: Two spraying boxes (4) are respectively fixed with partitions (8). The partitions (8) separate the side of the spraying box (4) near the drop point into a separate cleaning chamber. A roller brush (9) with its upper end able to extend into the die of the pressure roller (1) is rotatably connected in the cleaning chamber. The roller brush (9) is driven by a motor (10).

3. The dust removal ash cold-pressed pellet production device according to claim 2, characterized in that: The roller brush (9) is provided with an opening and closing door (11) below it.

4. The dust removal ash cold-pressed pellet production device according to claim 1, characterized in that: Between the two spray boxes (4) is a drop channel for the pellets. Side plates (12) are fixed on both sides of the channel. A grid-shaped buffer mechanism (13) is fixed in the drop channel enclosed by the side wall of the spray box (4) and the side plate (12). The buffer mechanism (13) is composed of intersecting elastic ropes, and the diagonal length of the grid unit in the buffer mechanism (13) is equal to the diameter of the pellet.

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