An ultra-thick layer material laying device

Abstract

The application provides a super-thick material layer distributing device, belonging to the technical field of metallurgy, comprising: a material conveying machine, having multiple machines arranged in parallel and at intervals; a multi-roller distributor, connected below the outlet of the material conveying machine, having multiple rollers adapted to rotate, the multiple rollers being arranged in a downwardly inclined direction in sequence, wherein at least one of the rollers is provided with multiple air holes on the barrel; the super-thick material layer distributing device of the application mixes sintering materials of different particle sizes on the multi-roller distributor through the rotation of the rollers; in the process of roller rotation, high-temperature steam can be sprayed from the air holes of the barrel, the high-temperature steam can increase the particle size and strengthen the particle structure, and the high-temperature steam can also increase the material temperature and reduce the thickness of the over-wet layer in the material layer, so that the air permeability of the sintering material layer meets the requirements of super-thick material layer sintering.

Description

Technical Field

[0001] This invention relates to the field of metallurgical technology, specifically to an ultra-thick material layer distribution device. Background Technology

[0002] The sintering production process includes major steps such as material feeding, ignition, and sintering. Material feeding involves using a material feeding device to evenly distribute the mixture onto the sintering trolley. During material feeding, the particle size and chemical composition of the mixture must be evenly distributed along the transverse and longitudinal directions of the sintering trolley, and the mixture must have a certain degree of looseness and a smooth surface.

[0003] Currently, the conventional material feeding process for sintering trolleys in my country uses a shuttle feeder + mixing hopper + round roller feeder + multiple feeders (or reflectors). This process is only suitable for general thick material layers. For ultra-thick material layers with a thickness of 900-1000mm, more advanced material feeding technology is needed to meet the material layer's requirements for air permeability. Summary of the Invention

[0004] Therefore, the technical problem to be solved by the present invention is to overcome the defect of existing fabric laying equipment that cannot meet the requirements of air permeability when used for ultra-thick fabric layers with a thickness of 1000mm, thereby providing an ultra-thick fabric laying equipment.

[0005] To solve the above-mentioned technical problems, the present invention provides an ultra-thick material layer laying device, comprising:

[0006] The conveyor system consists of multiple units arranged vertically and horizontally at intervals.

[0007] A multi-roller feeder, located below the outlet of the conveyor, has multiple rollers suitable for rotation, the multiple rollers being arranged sequentially in a downwardly inclined direction, wherein at least one of the rollers has multiple vent holes on its body.

[0008] As a preferred embodiment, the plurality of rollers are arranged sequentially downwards in a direction opposite to the conveying direction of the feeder.

[0009] As a preferred embodiment, the conveying direction of the multi-roller feeder is suitable for sequentially feeding materials from the front to the rear of the sintering trolley in the forward direction.

[0010] The lowermost of the plurality of rollers is adapted to contact the uppermost sintering material of the sintering trolley.

[0011] As a preferred embodiment, each of the rollers has a vent hole.

[0012] As a preferred embodiment, the vent holes on the roller have multiple rows parallel to the central axis of the roller, and the vent holes between adjacent rows are staggered.

[0013] As a preferred embodiment, the conveyor has two units.

[0014] As a preferred embodiment, the multi-roller fabric distributor has six rollers arranged in sequence.

[0015] The technical solution of this invention has the following advantages:

[0016] 1. The ultra-thick material layer feeding device provided by the present invention uses a multi-roller feeder to mix sintering materials of different particle sizes by rotating the rollers. During the rotation of the rollers, high-temperature steam can be sprayed out from the ventilation holes in the cylinder body. The high-temperature steam can increase the particle size and strengthen the particle structure. At the same time, the high-temperature steam can also increase the material temperature and reduce the thickness of the over-wet layer in the material layer, so that the air permeability of the sintering material layer meets the requirements of ultra-thick material layer sintering.

[0017] 2. The ultra-thick material layer feeding device provided by the present invention can convey sintered materials of different particle sizes separately through multiple conveyors arranged in parallel at intervals, and simultaneously drop them onto the multi-roller feeder, so that sintered materials of different particle sizes can be mixed on the multi-roller feeder, thereby reducing the process steps of the initial batching.

[0018] 3. The ultra-thick material layer feeding device provided by the present invention directly feeds sintered material to the multi-roller feeder through the conveyor, omitting the mixing hopper in the middle, which can reduce the squeezing and damage to the sintered material balls at the hopper outlet and protect the integrity of the balls to the greatest extent.

[0019] 4. The ultra-thick material layer distribution equipment provided by the present invention comprises multiple rollers of a multi-roller distributor arranged sequentially downwards in a direction opposite to the conveying direction of the conveyor. When the sintered material is conveyed from the conveyor to the multi-roller distributor, due to inertia, the sintered material tends to continue moving forward, and due to gravity, it also tends to move downwards. However, when the sintered material reaches the rollers, the rollers obstruct its movement, preventing it from moving forward and limiting its movement to downwards and backwards. Therefore, the potential energy of the sintered material moving downwards is reduced, the mixing time of the sintered material on the rollers is increased, the effect of high-temperature steam on the sintered material is enhanced, and the descent speed of the sintered material is reduced, resulting in more uniform and stable distribution.

[0020] 5. The ultra-thick material layer feeding device provided by the present invention, wherein the lowest roller of the multi-roller feeder is suitable for contacting the uppermost layer of sintering material on the sintering trolley, thereby flattening the uppermost layer of sintering material. A flat material surface is the basis for ensuring stable and smooth sintering production. By improving the overall compaction of the material layer, the sintering speed of the upper, middle and lower parts can be effectively controlled, achieving uniform sintering and obtaining good sinter quality while increasing output. Attached Figure Description

[0021] To more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the specific embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of the present invention. For those skilled in the art, other drawings can be obtained from these drawings without creative effort.

[0022] Figure 1 This is a front view structural diagram of one embodiment of the ultra-thick material layer spreading device of the present invention.

[0023] Figure 2 for Figure 1 A three-dimensional structural diagram of one roller in a multi-roller fabric feeder.

[0024] Figure 3 This is a flowchart illustrating one embodiment of the ultra-thick material layer application method of the present invention.

[0025] Explanation of reference numerals in the attached figures:

[0026] 1. Conveyor; 2. Multi-roller distributor; 3. Conveying direction; 4. Sintering trolley; 5. Forward direction; 6. Roller; 7. Vent. Detailed Implementation

[0027] The technical solution of the present invention will now be clearly and completely described with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0028] In the description of this invention, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this invention 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. Therefore, they should not be construed as limitations on this invention.

[0029] In the description of this invention, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "linking" 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 invention based on the specific circumstances.

[0030] Furthermore, the technical features involved in the different embodiments of the present invention described below can be combined with each other as long as they do not conflict with each other.

[0031] Example 1

[0032] This embodiment provides a specific implementation method for an ultra-thick material layer fabrication device, such as... Figure 1 As shown, the system includes a material conveyor 1 and a multi-roller material distributor 2. The material conveyor 1 comprises two units arranged vertically and horizontally at intervals, each with a width of 2600 mm. Alternatively, as an alternative embodiment, more than two material conveyors 1 may be provided, with the width of each conveyor 1 ranging from 2600 mm to 3000 mm.

[0033] like Figure 1 As shown, the multi-roller feeder 2 is located below the outlet of the conveyor 1. Specifically, the multi-roller feeder 2 is a six-roller feeder, having six rotatable rollers 6, each roller 6 having a diameter of 250 mm. Alternatively, as an alternative embodiment, the multi-roller feeder 2 can be any other type of multi-roller feeder 2 besides the six-roller feeder, where the diameter of each roller 6 can be between 200-300 mm.

[0034] like Figure 1 As shown, the six rollers 6 of the six-roller fabric distributor are arranged sequentially in a downward inclined direction at an angle of 45°. Furthermore, the six rollers 6 are arranged sequentially downwards in a direction opposite to the conveying direction 3 of the conveyor 1. Alternatively, as an alternative embodiment, the inclination angle of the multi-roller fabric distributor 2 can also be other angles within the range of 0-90°.

[0035] like Figure 1 As shown, the conveying direction 3 of the multi-roller feeder 2 is suitable for sequentially feeding material from the front to the rear in the forward direction 5 of the sintering trolley 4. The lowermost roller 6 among the multiple rollers 6 is suitable for contacting the uppermost sintering material of the sintering trolley 4, thereby flattening the uppermost material surface of the sintering trolley 4 during the feeding process.

[0036] like Figure 2As shown, each roller 6 of the multi-roller feeder 2 is provided with multiple ventilation holes 7. The diameter of the ventilation holes 7 is no greater than 2 mm. The ventilation holes 7 are suitable for connection with high-temperature steam, so that the sintered material can come into contact with high-temperature steam when it is conveyed along the roller 6. The ventilation holes 7 have multiple rows parallel to the central axis of the roller 6, and the ventilation holes 7 between adjacent rows are staggered. The interval between adjacent rows of ventilation holes is 10 mm, and the interval between left and right ventilation holes is 5 mm. In addition, as an alternative embodiment, the ventilation holes 7 on the roller 6 can also be adjusted and set to other specifications as needed.

[0037] Example 2

[0038] This embodiment provides a specific implementation method for an ultra-thick material layer fabrication method, which can employ the ultra-thick material layer fabrication equipment described in Embodiment 1, as follows: Figure 3 As shown, it includes the following steps:

[0039] Step 1: Two parallel conveyors 1 are used to simultaneously transport sintered materials of different particle sizes toward the multi-roller distributor 2. Specifically, the upper conveyor 1 is used to transport return ore with a particle size of about 3mm, and the lower conveyor 1 is used to transport the sintered material after secondary mixing. The return ore and sintered material fall from the conveyor 1 at the same time, which is conducive to uniform mixing.

[0040] Step Two: During the material feeding process, the rollers 6 of the multi-roller feeder 2 rotate, and the rotation of the rollers 6 remixes the sintering material. Simultaneously, the rollers 6 spray high-temperature steam outwards through the vents 7. Specifically, the upper five rollers 6 deliver steam at a pressure of 0.06 MPa and a temperature of 80°C through 2mm orifices, and the bottom roller 6 delivers steam at a pressure of 0.06 MPa and a temperature of 90°C through 2mm orifices. Alternatively, as an alternative implementation, the pressure of the upper five rollers 6 can be between 0.05-0.08 MPa, and the temperature between 80°C and 100°C. The pressure of the bottom roller 6 can be between 0.08-0.1 MPa. The high-temperature steam from the bottom roller 6 penetrates to a depth of 100mm into the sintering material layer, assisting in the high-temperature steam sintering process.

[0041] Step 3: The bottommost roller 6 of the multi-roller feeder 2 is above the sintering trolley 4. As the sintering trolley 4 moves in the forward direction 5, the bottommost roller 6 of the multi-roller feeder 2 flattens the surface of the topmost sintering material on the sintering trolley 4.

[0042] The above measures can improve the permeability of the sintering material layer, enabling it to meet the sintering requirements of ultra-thick material layers, reduce the negative pressure of the main exhaust fan of sintering trolley 4, and improve the utilization coefficient of sintering trolley 4.

[0043] Obviously, the above embodiments are merely illustrative examples for clear explanation and are not intended to limit the implementation. Those skilled in the art will recognize that other variations or modifications can be made based on the above description. It is neither necessary nor possible to exhaustively list all possible implementations here. However, obvious variations or modifications derived therefrom are still within the scope of protection of this invention.

Claims

1. A device for laying ultra-thick material layers, characterized in that, include: The conveyor (1) has multiple units arranged in parallel at intervals; The multi-roller feeder (2) is located below the outlet of the feeder (1) and has multiple rollers (6) suitable for rotation. The multiple rollers (6) are arranged sequentially in a downward inclined direction, and at least one of the rollers (6) has multiple vent holes (7) on its body. The vent holes (7) are suitable for spraying high-temperature steam onto the sintering material during the rotation of the rollers (6). The conveying direction (3) of the multi-roller feeder (2) is suitable for feeding materials sequentially from the front to the rear in the forward direction (5) of the sintering trolley (4); The lowermost roller (6) of the plurality of rollers (6) is adapted to contact the uppermost sintering material of the sintering trolley (4).

2. The ultra-thick material layer spreading equipment according to claim 1, characterized in that, Multiple rollers (6) are arranged sequentially downwards in a direction opposite to the conveying direction (3) of the conveyor (1).

3. The ultra-thick material layer spreading equipment according to claim 1 or 2, characterized in that, Each of the rollers (6) has a vent (7).

4. The ultra-thick material layer spreading equipment according to claim 1 or 2, characterized in that, The ventilation holes (7) on the roller (6) have multiple rows parallel to the central axis of the roller (6), and the ventilation holes (7) between adjacent rows are staggered.

5. The ultra-thick material layer spreading equipment according to claim 1, characterized in that, The conveyor (1) has two units.

6. The ultra-thick material layer spreading equipment according to claim 1, characterized in that, The multi-roller fabric feeder (2) has six rollers (6) arranged in sequence.

Images