Aluminum oxide abrasive purifying device
The alumina abrasive purification device, which combines electromagnetic and ultrasonic vibration with centrifugal and cyclone separation, solves the problem that traditional devices cannot remove multiple impurities at the same time, achieving efficient purification and energy saving.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-27
- Publication Date
- 2026-04-10
AI Technical Summary
Traditional alumina purification equipment is unable to effectively remove multiple impurities simultaneously, resulting in low purification efficiency and high costs.
An electromagnetic generator is used in conjunction with an ultrasonic vibration pool to remove impurities using an alternating magnetic field and ultrasonic waves. Combined with centrifugal and cyclone separation mechanisms, the separation of ferromagnetic, light, and heavy metal impurities is achieved. The separation process is optimized by using an adjustable pore size filter and a waste heat recovery component.
It improves the purification efficiency and purity of alumina, reduces energy consumption and production costs, extends equipment lifespan, and adapts to the separation needs of impurities with different particle sizes.
Smart Images
Figure CN224100929U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to the technical field of alumina purification, in particular to an alumina abrasive purification device. BACKGROUND
[0002] Alumina is one of the most important raw materials in the aluminum industry, widely used in metallurgy, ceramics, chemical industry, electronics and other fields. With the rapid development of aluminum industry, the demand for alumina is increasing, and the quality and purity of alumina directly affect the efficiency and cost of subsequent processing. Especially in the field of fine chemicals, electronic materials and other high-end applications, the purity of alumina is more stringent
[0003] However, in the actual production process, the raw material alumina often contains various impurities, such as iron, silicate dust and light and heavy metal impurities. The existence of these impurities seriously affects the purity and application performance of alumina. The traditional purification device can only carry out single physical or chemical purification treatment on alumina, which is difficult to effectively remove multiple impurities at the same time, resulting in low purification efficiency and high purification cost.
[0004] Based on this, the utility model designs a kind of alumina abrasive purification device to solve the above problems. INVENTION CONTENTS
[0005] The utility model aims at providing a kind of alumina abrasive purification device to solve the problems raised in the above background.
[0006] In order to solve the above technical problems, the utility model provides the following technical scheme: a kind of alumina abrasive purification device, comprising:
[0007] feed inlet, which is communicated with the pretreatment bin;
[0008] The pretreatment bin is internally provided with an electromagnetic generating part and an ultrasonic vibration pool from top to bottom, the electromagnetic generating part is used for magnetizing and gathering the iron-containing impurities in the raw material, and the ultrasonic vibration pool is used for stripping the surface attachments of particles;
[0009] The centrifugal sorting mechanism is connected with the pretreatment bin through a screw conveyor at the feeding end, and comprises an inner layer centrifugal cavity and an outer layer cyclone cavity arranged coaxially, the inner layer centrifugal cavity is provided with an adjustable aperture screen on the side wall, which is used for sorting high-purity alumina and light impurities;
[0010] The cyclone sorting mechanism is communicated with the outer layer cyclone cavity through a flow guide pipe, and is provided with a heavy metal impurity collection bin at the bottom and a discharge port at the top.
[0011] The high-purity alumina collection bin is connected with the discharge port at the bottom of the inner layer centrifugal cavity and the discharge port at the top of the cyclone sorting mechanism respectively, and is used for collecting the final purification product.
[0012] Preferably, the electromagnetic generating part is an alternating magnetic field generator with a magnetic field strength ranging from 0.5 to 1.2 T for magnetizing the ferrous impurities to form magnetic agglomerates; and the ultrasonic vibration tank has an operating frequency of 20-40 kHz for stripping silicate dust on the surface of the alumina particles through cavitation effect.
[0013] Preferably, an annular airflow channel is formed between the inner centrifugal cavity and the outer cyclone cavity, and an adjustable guide plate with adjustable inclination angle is arranged in the airflow channel; the inclination angle of the guide plate is adjustable in a range of 15°-60° for controlling the tangential velocity of the airflow to adapt to the separation requirements of impurities with different particle sizes.
[0014] Preferably, the adjustable aperture filter screen is composed of an array of piezoelectric ceramic sheets, and the aperture of the filter screen is dynamically adjustable in a range of 50-200 μm by applying voltage to realize high-throughput sorting of coarse particles and high-precision interception of fine particles.
[0015] Preferably, the waste heat recovery assembly comprises a spiral heat exchange pipe, one end of the spiral heat exchange pipe is connected to an exhaust port of the cyclone sorting mechanism, and the other end of the spiral heat exchange pipe extends to the periphery of the pretreatment bin to form a preheating interlayer for conducting the waste heat of the high-temperature exhaust gas to the pretreatment bin to preheat the raw material.
[0016] Preferably, the surface of the spiral heat exchange pipe is coated with a corrosion-resistant ceramic coating to resist the erosion of acidic components in the exhaust gas.
[0017] Compared with the prior art, the present application has the following beneficial effects:
[0018] Firstly, the present application realizes effective magnetization and aggregation of ferromagnetic impurities in the raw material and stripping of the attachments on the surface of the particles by the cooperation of the electromagnetic generating part and the ultrasonic vibration tank, thereby improving the pretreatment effect of the raw material.
[0019] Secondly, the present application dynamically adjusts the adjustable aperture filter screen to adapt to the separation requirements of impurities with different particle sizes, thereby improving the flexibility and accuracy of the sorting. BRIEF DESCRIPTION OF DRAWINGS
[0020] Figure 1 Fig. 1 is a schematic diagram of the overall structure of the present application;
[0021] Figure 2 It is the main view cross section structure schematic diagram of the utility model;
[0022] Figure 3 It is the internal structure schematic diagram of the pre-treatment bin in the utility model;
[0023] Figure 4 It is the structure schematic diagram of the centrifugal sorting mechanism in the utility model;
[0024] Figure 5 It is the structure schematic diagram of the utility model Figure 2 It is the enlarged structure schematic diagram of A in the utility model;
[0025] Figure 6 It is the enlarged structure schematic diagram of B in the utility model Figure 2
[0026] Wherein: 1, feed inlet; 2, pre-treatment bin; 21, electromagnetic generating part; 22, ultrasonic vibration pool; 3, centrifugal sorting mechanism; 31, inner layer centrifugal cavity; 311, adjustable aperture filter screen; 32, outer layer cyclone cavity; 33, flow guide pipe; 34, annular airflow channel; 341, flow guide plate; 4, spiral conveyor; 5, cyclone sorting mechanism; 51, heavy metal impurity collection bin; 52, discharge port; 6, high-purity alumina collection bin; 7, waste heat recovery assembly; 71, spiral heat exchange pipe; 72, preheating interlayer. DETAILED DESCRIPTION
[0027] The technical solutions in the embodiments of the utility model will be clearly and completely described below with reference to the drawings in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, rather than all the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by those skilled in the art without creative labor fall within the protection scope of the utility model.
[0028] Please refer to Figure 1 - Figure 4 The utility model embodiment provides a kind of alumina abrasive purification device, comprising:
[0029] Feed inlet 1, with pre-treatment bin 2 communication;
[0030] Pre-treatment bin 2, its inside is sequentially provided with electromagnetic generating part 21 and ultrasonic vibration pool 22 from top to bottom, electromagnetic generating part 21 is used to magnetize aggregation in raw material with iron impurities, ultrasonic vibration pool 22 is used to strip particle surface attachment;
[0031] A centrifugal sorting mechanism 3 is connected with the pretreatment bin 2 through a screw conveyor 4 at its feeding end, and comprises an inner centrifugal cavity 31 and an outer cyclone cavity 32 arranged coaxially, and the inner centrifugal cavity 31 is provided with an adjustable aperture filter screen 311 on its side wall for sorting high-purity alumina and light impurities;
[0032] A cyclone sorting mechanism 5 is communicated with the outer cyclone cavity 32 through a flow guide pipe 33, and is provided with a heavy metal impurity collecting bin 51 at its bottom and a discharge port 52 at its top;
[0033] A high-purity alumina collecting bin 6 is connected with the inner centrifugal cavity 31 and the cyclone sorting mechanism 5 at their bottom discharge ports and top discharge ports 52 respectively, and is used for collecting the final purified product.
[0034] In actual application, the raw material enters the pretreatment bin 2 from the feeding port 1, the electromagnetic generating element 21 generates an alternating magnetic field to magnetize and aggregate the iron-containing impurities, the magnetized raw material falls into the ultrasonic vibration tank 22, the high-frequency vibration peels off the surface-attached impurities, the peeled raw material enters the inner centrifugal cavity 31 through the screw conveyor 4, the high-speed centrifugal force makes the high-density alumina particles fall into the high-purity alumina collecting bin 6 through the adjustable aperture filter screen 311, the light impurities enter the outer cyclone cavity 32 along with the centrifugal airflow, the airflow in the outer cyclone cavity 32 forms a vortex, the heavy metal impurities are settled in the heavy metal impurity collecting bin 51 due to the density difference, and the remaining high-purity alumina enters the high-purity alumina collecting bin 6 from the top.
[0035] The embodiment replaces the traditional pickling through the synergistic effect of electromagnetism, ultrasonic, centrifugation and cyclone, reduces pollution, can simultaneously remove magnetic impurities, light impurities and heavy metal impurities, and improves the purification efficiency and purity.
[0036] In one case of the embodiment, the specific structural form of the electromagnetic generating element 21 can be the form of a horseshoe magnet matched with an electromagnetic coil, or an electromagnet directly generates a magnetic field, as long as it can effectively magnetize and aggregate the iron-containing impurities in the raw material, and the embodiment does not make redundant limitations here, and the position and number of the electromagnetic generating element 21 can be flexibly adjusted according to actual needs to ensure that the iron-containing impurities in the raw material are fully magnetized and aggregated.
[0037] Please refer to Figure 3 As a preferred embodiment of the utility model, the electromagnetic generating element 21 is an alternating magnetic field generator, the magnetic field strength range is 0.5-1.2T, and it is used for magnetizing the iron-containing impurities to form a magnetic aggregate; the working frequency of the ultrasonic vibration tank 22 is 20-40kHz, and the silicate dust on the surface of the alumina particles is peeled off through the cavitation effect.
[0038] In actual application, the raw materials are in an alternating magnetic field, and the magnetization of the iron-containing impurities forms a magnetic agglomeration, which is convenient for subsequent separation.
[0039] Please refer to Figure 5 As another preferred embodiment of the utility model, the annular airflow channel 34 is formed between the inner centrifugal cavity 31 and the outer cyclone cavity 32, and the airflow channel 34 is provided with a guide plate 341 with an adjustable inclination angle; the inclination angle of the guide plate 341 is adjusted in the range of 15°-60°, which is used for controlling the tangential velocity of airflow to adapt to the separation requirements of impurities with different particle sizes.
[0040] In actual application, the tangential velocity of airflow is changed by adjusting the angle of the guide plate 341, when the angle is in the range of 15°-30°, the low-speed airflow separates the micron-level light impurities, and when the angle is in the range of 45°-60°, the high-speed airflow separates the sub-micron-level superfine dust, so that the cyclone separation efficiency is improved by dynamically adapting to raw materials with different particle sizes.
[0041] Please refer to Figure 4 As another preferred embodiment of the utility model, the adjustable aperture filter screen 311 is composed of a piezoelectric ceramic sheet array, the aperture of the filter screen is dynamically adjusted in the range of 50-200 μm by applying a voltage, and high-throughput sorting of coarse particles and high-precision interception of fine particles are realized.
[0042] In actual application, the piezoelectric ceramic sheet in the adjustable aperture filter screen 311 is deformed after applying a voltage, so that the aperture of the filter screen is dynamically adjusted, the throughput is improved when processing coarse particle raw materials with a large aperture, and fine impurities are intercepted in the fine processing stage with a small aperture, avoiding frequent replacement of traditional filter screens.
[0043] Please refer to Figure 6 As another preferred embodiment of the utility model, the waste heat recovery assembly 7 is further included, the waste heat recovery assembly 7 comprises a spiral heat exchange pipe 71, one end of the spiral heat exchange pipe 71 is connected to the exhaust port of the cyclone sorting mechanism 5, the other end of the spiral heat exchange pipe 71 extends to the periphery of the pretreatment bin 2 to form a preheating interlayer 72, and the preheating interlayer 72 is used for conducting the waste heat of high-temperature exhaust gas to the pretreatment bin 2 to preheat the raw materials.
[0044] In actual application, the high-temperature exhaust gas discharged from the cyclone sorting mechanism 5 is introduced into the interlayer 72 in the periphery of the pretreatment bin 2, so that the raw materials are preheated, the energy consumption of ultrasonic purification is reduced, the temperature of the exhaust gas is reduced, and the burden of subsequent exhaust gas treatment is reduced.
[0045] Please refer to Figure 6 As another preferred embodiment of the utility model, the surface of the spiral heat exchange pipe 71 is coated with a corrosion-resistant ceramic coating to resist the erosion of acidic components in the exhaust gas.
[0046] In actual application, the spiral heat exchange pipe 71 can not only effectively conduct heat, but also effectively resist the acidic components in the exhaust gas through the corrosion-resistant ceramic coating on the surface, thereby prolonging the service life of the spiral heat exchange pipe 71 and reducing the downtime maintenance and replacement costs caused by corrosion.
[0047] Although the embodiments of the utility model have been shown and described, it can be understood by those skilled in the art that various changes, modifications, replacements and variations can be made to these embodiments without departing from the principles and spirits of the utility model, and the scope of the utility model is defined by the appended claims and their equivalents.
Claims
1. An apparatus for purifying an alumina abrasive, characterized by, The utility model relates to a high-purity alumina production device, comprising: a feed inlet (1) in communication with a pretreatment bin (2); the pretreatment bin (2) has an electromagnetic generating part (21) and an ultrasonic vibration pool (22) arranged in sequence from top to bottom inside, the electromagnetic generating part (21) is used for magnetizing and gathering iron-containing impurities in raw materials, and the ultrasonic vibration pool (22) is used for stripping surface attachments of particles; a centrifugal sorting mechanism (3) is connected with the pretreatment bin (2) through a screw conveyor (4) at a feed end, the centrifugal sorting mechanism (3) comprises an inner layer centrifugal cavity (31) and an outer layer cyclone cavity (32) arranged coaxially, the inner layer centrifugal cavity (31) is provided with an adjustable aperture screen (311) on a side wall, and is used for sorting high-purity alumina and light impurities; a cyclone sorting mechanism (5) is in communication with the outer layer cyclone cavity (32) through a flow guide pipe (33), is provided with a heavy metal impurity collecting bin (51) at a bottom, and is provided with a discharge outlet (52) at a top; a high-purity alumina collecting bin (6) is connected with a bottom discharge outlet of the inner layer centrifugal cavity (31) and a top discharge outlet (52) of the cyclone sorting mechanism (5) respectively, and is used for collecting a final purification product.
2. An apparatus for purifying alumina abrasives according to claim 1, characterized by: The electromagnetic generating part (21) is an alternating magnetic field generator, the magnetic field strength ranges from 0.5 to 1.2 T, is used for magnetizing iron-containing impurities to form magnetic agglomerates, the ultrasonic vibration pool (22) has a working frequency of 20-40 kHz, and silicate dust on the surface of alumina particles is stripped through a cavitation effect.
3. An apparatus for purifying alumina abrasives according to claim 1, characterized by: The inner layer centrifugal cavity (31) and the outer layer cyclone cavity (32) form a ring-shaped airflow channel (34), the airflow channel (34) is provided with a flow guide plate (341) with an adjustable inclination angle, the inclination angle of the flow guide plate (341) is adjusted in a range of 15°-60°, and is used for controlling airflow tangential velocity to adapt to the separation requirements of impurities with different particle sizes.
4. The apparatus for purifying alumina abrasive grains according to claim 1, wherein: The adjustable aperture screen (311) is composed of a piezoelectric ceramic sheet array, the aperture of the screen is dynamically adjusted in a range of 50-200 mu m by applying voltage, rough particle high-flux sorting and fine particle high-precision interception are realized.
5. The apparatus for purifying alumina abrasive grains according to claim 1, wherein: Further comprising a waste heat recovery assembly (7), the waste heat recovery assembly (7) comprises a spiral heat exchange pipe (71), one end of the spiral heat exchange pipe (71) is connected with an exhaust port of the cyclone sorting mechanism (5), the other end of the spiral heat exchange pipe (71) extends to the periphery of the pretreatment bin (2) to form a preheating interlayer (72), and is used for conducting high-temperature waste gas waste heat to the pretreatment bin (2) to preheat raw materials.
6. An apparatus for purifying alumina abrasives according to claim 5, characterized by: The surface of the spiral heat exchange pipe (71) is coated with a corrosion-resistant ceramic coating to resist the erosion of acidic components in waste gas.