Iron removing device for alumina micropowder
Patent Information
- Application Number
- CN202522477068.5
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-11-21
- Publication Date
- 2026-10-20
- Estimated Expiration
- 2035-11-21
AI Technical Summary
[0004]然而，由于研磨后的氧化铝微粉粒度极小，在直接排入气动式除铁器内部时，极易出现积聚现象，无法均匀分散并落在除铁器的磁棒上
[0017]与现有技术相比，本实用新型的有益效果是：本实用新型中接料斗配备振动器且可相对气动除铁器本体上下移动并配合内部导流筛网，能将研磨后粒度极小的氧化铝微粉充分打散，避免直接排放时出现的积聚现象，确保微粉均匀分散；分散后的氧化铝微粉可均匀落在气动除铁器本体内的磁棒上，大幅增加微粉与磁棒的接触面积和接触均匀性，让含铁杂质被充分吸附去除，提升除铁彻底性，满足高精度应用场景对微粉纯度的要求。
Smart Images
Figure CN224865586U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of iron removal technology of alumina micro powder, and in particular to an iron removal device for alumina micro powder. Background Technology
[0002] Alumina micro powder has a wide range of applications in electronics, ceramics, metallurgy and other fields. The content of iron impurities in it directly affects the product performance and application effect. The presence of iron impurities will reduce the purity, wear resistance and insulation of key indicators of alumina micro powder. Therefore, iron removal treatment must be carried out on alumina micro powder.
[0003] Currently, the industry typically installs magnetic separators at the finished product discharge port of alumina micro-powder grinding equipment (including continuous mills or intermittent mills) to remove iron from the ground micro-powder. Among them, pneumatic iron separators, as commonly used dry magnetic separators, are widely used in this iron removal scenario. The specific process is as follows: after the ground alumina micro-powder is discharged from the mill discharge port, it undergoes iron removal treatment by a pneumatic iron separator installed at the discharge port.
[0004] However, due to the extremely small particle size of the ground alumina powder, it is prone to agglomeration when directly discharged into the pneumatic iron separator, failing to disperse evenly and settle onto the magnetic rods. This problem results in insufficient contact between the magnetic rods and the alumina powder, with some iron-containing impurities failing to be effectively adsorbed and removed, ultimately affecting the overall iron removal effect and making it difficult to meet the stringent purity requirements of high-precision alumina powder applications.
[0005] Therefore, there is an urgent need for an alumina powder iron removal device that can disperse the ground alumina powder, make it fall evenly into the pneumatic iron separator, and make it evenly contact the magnetic rod, so as to ensure the iron removal effect. Utility Model Content
[0006] The purpose of this invention is to provide an alumina micro powder iron removal device that can break up the ground alumina micro powder and make it fall evenly into the pneumatic iron remover to make it evenly contact the magnetic rod to ensure the iron removal effect.
[0007] The present invention adopts the following technical solution: A device for removing iron from alumina micro powder includes a pneumatic iron separator body. A receiving hopper is provided at the inlet at the top of the pneumatic iron separator body. A vibrator is provided on the receiving hopper. When the vibrator is working, the receiving hopper can move up and down relative to the pneumatic iron separator body. A buffer member connected to the receiving hopper is provided on the pneumatic iron separator body. A guide screen is provided inside the receiving hopper.
[0008] Preferably, a lower guide hose is provided between the receiving hopper and the inlet of the pneumatic iron remover body, and an upper guide hose is provided at the top of the receiving hopper.
[0009] Preferably, the buffer includes a guide rod disposed on the top of the pneumatic iron remover body, and a guide sleeve is disposed on the top of the receiving hopper, with the guide rod movably passing through the guide sleeve.
[0010] Preferably, at least one set of the guide rod and the guide sleeve is provided.
[0011] Preferably, a buffer spring is sleeved on the outside of the guide rod, the top of the buffer spring is fixedly connected to the guide sleeve, and the bottom is fixedly connected to the top of the pneumatic iron remover body.
[0012] Preferably, the flow guiding screen is a conical structure with the tip pointing upwards.
[0013] Preferably, the receiving hopper is provided with a blower pipe that is connected to an air source, and the outlet end of the blower pipe is located inside the receiving hopper.
[0014] Preferably, a guide ring is provided at the top of the receiving hopper, and a guide cavity is formed inside the guide ring. The guide cavity is connected to the air source, and multiple blowing air pipes are arranged at intervals along the inner circle of the guide ring. All of the multiple blowing air pipes are connected to the guide cavity.
[0015] Preferably, the outlet of the blowing air pipe is flush with the inner wall of the receiving hopper.
[0016] Preferably, the outlet of the blowing air pipe is inclined toward the middle of the receiving hopper.
[0017] Compared with the prior art, the beneficial effects of this utility model are as follows: The receiving hopper of this utility model is equipped with a vibrator that can move up and down relative to the pneumatic iron separator body and cooperate with the internal guide screen, which can fully disperse the alumina micro powder with extremely small particle size after grinding, avoid the accumulation phenomenon that occurs when directly discharged, and ensure that the micro powder is evenly dispersed; the dispersed alumina micro powder can fall evenly onto the magnetic rod inside the pneumatic iron separator body, greatly increasing the contact area and contact uniformity between the micro powder and the magnetic rod, allowing iron impurities to be fully adsorbed and removed, improving the thoroughness of iron removal, and meeting the requirements of high-precision application scenarios for the purity of micro powder.
[0018] In addition, the buffer component on the pneumatic iron separator body is connected to the receiving hopper, which can effectively buffer the impact force generated when the receiving hopper vibrates, reduce the impact of vibration on the overall structure of the device, extend the service life of the equipment, and ensure the stability of continuous operation. Attached Figure Description
[0019] Figure 1 This is a schematic diagram of the structure of an embodiment of this application; Figure 2 This is a schematic diagram of the structure of the flow guiding screen according to an embodiment of this application; Figure 3 This is a schematic diagram of the flow guide ring in an embodiment of this application. Detailed Implementation
[0020] The present invention will now be described clearly and completely with reference to the accompanying drawings and embodiments: like Figures 1 to 3 As shown, the alumina micro powder iron removal device of this utility model includes a pneumatic iron remover body 1. A receiving hopper 2 is provided at the inlet on the top of the pneumatic iron remover body 1. A vibrator 3 is provided on the receiving hopper 2. When the vibrator 3 is working, the receiving hopper 2 can move up and down relative to the pneumatic iron remover body 1. In conjunction with the guide screen 4 provided inside the receiving hopper 2, it can fully disperse the alumina micro powder with extremely small particle size after grinding, avoid the accumulation phenomenon that occurs when directly discharged, and ensure that the alumina micro powder is evenly dispersed on the magnetic rod. This greatly increases the contact area and contact uniformity between the micro powder and the magnetic rod, allowing iron impurities to be fully adsorbed and removed, improving the thoroughness of iron removal, and meeting the requirements of high-precision application scenarios for the purity of micro powder.
[0021] In this embodiment, a lower guide hose 5 is provided between the receiving hopper 2 and the inlet of the pneumatic iron remover body 1, and an upper guide hose 6 is provided on the top of the receiving hopper 2. The top end of the upper guide hose 6 is connected to the outlet at the bottom of the grinder. Both the upper guide hose 6 and the lower guide hose 5 can be made of compressible or stretchable bamboo-joint hoses to buffer the impact caused by the up-and-down movement of the receiving hopper 2 during the operation of the vibrator 3.
[0022] In addition, the pneumatic iron separator body 1 is equipped with a buffer component connected to the receiving hopper 2 to effectively buffer the impact force generated when the receiving hopper 2 vibrates, reducing the impact of vibration on the overall structure of the device. Specifically, the buffer component includes a guide rod 7 set on the top of the pneumatic iron separator body 1, and a guide sleeve 8 set on the top of the receiving hopper 2. The guide rod 7 is movably inserted into the guide sleeve 8. At least one set of guide rod 7 and guide sleeve 8 is provided, and the two guide rods 7 in this set are symmetrically arranged. Through the setting of the guide rod 7 and guide sleeve 8, the movement of the receiving hopper 2 can be limited to ensure that the receiving hopper 2 only moves up and down in the vertical direction, ensuring that the vertical unobstructed discharge channel is maintained. In this embodiment, a buffer spring 9 is sleeved on the outside of the guide rod 7. The top of the buffer spring 9 is fixedly connected to the guide sleeve 8, and the bottom is fixedly connected to the top of the pneumatic iron remover body 1. The buffer spring 9 can limit the range of vertical movement of the receiving hopper 2. When the receiving hopper 2 tends to move upward, the buffer spring 9 tends to be stretched. At this time, the restoring force of the buffer spring 9 will pull the receiving hopper 2 to reset it. When the receiving hopper 2 tends to move downward, the buffer spring 9 is compressed, and the restoring force of the buffer spring 9 will push the receiving hopper 2 to reset upward.
[0023] Furthermore, the guide screen 4 has an upward-pointing conical structure. This upward-pointing conical structure allows the falling alumina powder to first contact the tip and then naturally diffuse outwards along the inclined surface. Combined with the vibration of the receiving hopper 2, this quickly breaks up the powder agglomeration and prevents localized accumulation. The conical inclined surface provides a stable path for the powder to fall, allowing the dispersed powder to be evenly distributed along the inclined surface and fall into the pneumatic iron separator body 1, ensuring a more balanced overall falling trajectory and more comprehensive contact with the magnetic rod. In addition, the conical structure has no horizontal obstruction, making it less likely for powder to remain on the screen surface during vibration. At the same time, the inclined surface design subjectes the powder to both gravity and vibration, reducing the risk of screen clogging and ensuring smooth continuous operation.
[0024] Furthermore, the receiving hopper 2 is equipped with a blowing air pipe 10 connected to the air source, with the outlet end of the blowing air pipe 10 located inside the receiving hopper 2. By periodically opening the blowing air pipe 10, the blowing airflow can blow off the fine powder adhering to the guide screen 4, preventing the fine powder from adhering to the guide screen 4 and clogging the mesh, thus affecting the subsequent screening efficiency. Specifically, a guide ring 11 is provided at the top of the receiving hopper 2, and a guide cavity is formed inside the guide ring 11. The guide cavity is connected to the air source, and multiple blowing air pipes 10 are arranged at intervals along the inner circle of the guide ring 11, with each of the multiple blowing air pipes 10 connected to the guide cavity. The arrangement of multiple blowing air pipes 10 facilitates uniform blowing of the guide screen 4, ensuring a cleaning effect. Preferably, the outlet of the blowing air pipe 10 is flush with the inner wall of the receiving hopper 2 to avoid affecting normal material discharge. In addition, the outlet of the blowing pipe 10 is inclined toward the middle of the receiving hopper 2 so that the airflow is blown toward the lower part of the receiving hopper 2, blowing the fine powder into the gas separator body below.
[0025] In use, the upper guide hose 6 is connected to the outlet of the grinder, and the lower alumina powder outlet is connected to the receiving port of the subsequent processing step. During operation, the vibrator 3 is turned on, and the alumina powder falling into the receiving hopper 2 is evenly distributed onto the magnetic rod below after passing through the guide screen 4. Iron impurities are adsorbed onto the magnetic rod, and the powder falls vertically and is discharged from the bottom outlet. Finally, the magnetic rod is moved to discharge the adsorbed iron impurities from the iron discharge port on one side.
[0026] Finally, it should be noted that the above description is merely a preferred embodiment of this utility model and is not intended to limit the utility model. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the protection scope of this utility model.
Claims
1. An iron removal device for alumina micro powder, comprising a pneumatic iron separator body, characterized in that: A receiving hopper is provided at the feed inlet at the top of the pneumatic iron separator body. A vibrator is provided on the receiving hopper. When the vibrator is working, the receiving hopper can move up and down relative to the pneumatic iron separator body. A buffer is provided on the pneumatic iron separator body and connected to the receiving hopper. A guide screen is provided inside the receiving hopper.
2. The alumina micro powder iron removal device according to claim 1, characterized in that: A lower guide hose is provided between the receiving hopper and the inlet of the pneumatic iron remover body, and an upper guide hose is provided at the top of the receiving hopper.
3. The alumina micro powder iron removal device according to claim 2, characterized in that: The buffer component includes a guide rod disposed on the top of the pneumatic iron remover body, and a guide sleeve disposed on the top of the receiving hopper, with the guide rod movably passing through the guide sleeve.
4. The alumina micro powder iron removal device according to claim 3, characterized in that: At least one set of the guide rod and the guide sleeve is provided.
5. The alumina micro powder iron removal device according to claim 4, characterized in that: A buffer spring is fitted around the guide rod. The top of the buffer spring is fixedly connected to the guide sleeve, and the bottom is fixedly connected to the top of the pneumatic iron remover body.
6. The alumina micro powder iron removal device according to claim 1, characterized in that: The flow guiding screen is a conical structure with the tip pointing upwards.
7. The alumina micro powder iron removal device according to claim 1, characterized in that: The receiving hopper is equipped with a blower pipe that is connected to an air source, and the outlet end of the blower pipe is located inside the receiving hopper.
8. The alumina micro powder iron removal device according to claim 7, characterized in that: The top of the receiving hopper is provided with a guide ring, and a guide cavity is formed inside the guide ring. The guide cavity is connected to the air source. Multiple blowing air pipes are arranged at intervals along the inner circle of the guide ring, and all of the multiple blowing air pipes are connected to the guide cavity.
9. The alumina micro powder iron removal device according to claim 8, characterized in that: The outlet of the blower pipe is flush with the inner wall of the receiving hopper.
10. The alumina micro powder iron removal device according to claim 9, characterized in that: The outlet of the blowpipe is inclined toward the middle of the receiving hopper.