Aluminum oxide screening device and system

Abstract

The invention belongs to the technical field of screening equipment, and provides an aluminum oxide screening device and system.The aluminum oxide screening device comprises a wind tunnel chute, a sorting machine, an integrated grinding machine and a controller, an aluminum bin communicated with the wind tunnel chute is arranged above the wind tunnel chute, and a level gage is arranged in the wind tunnel chute; a discharge port of the wind tunnel chute is communicated with an inlet of the sorting machine, a weighing sensor is arranged in an output port of the sorting machine, a discharge port of the sorting machine is communicated with an inlet of the integrated grinding machine, and an aluminum oxide outlet of the integrated grinding machine is communicated with the inlet of the sorting machine; the wind tunnel chute, the level gage, the sorting machine, the weighing sensor and the integrated grinding machine are all in communication connection with the controller. The screened aluminum oxide is detected in real time through the weighing sensor, the number of the aluminum oxide discharged each time is accurately metered, and the screening effect can be quantified and traced.

Description

Technical Field

[0001] This invention belongs to the field of screening equipment technology, and specifically relates to an alumina screening device and system. Background Technology

[0002] Fresh alumina is the main raw material for electrolytic production, and its purity directly affects the operating efficiency of the electrolytic cell and the quality of aluminum ingots. Existing screening processes generally rely on manual operation or basic automation, which has the following drawbacks; 1. The sand removal effect cannot be quantified: The existing system cannot accurately know how much sand is removed each time, making it difficult to assess screening efficiency and the actual loss of raw materials. This results in a crude sand removal strategy, which can easily lead to raw material waste or system blockage. 2. Limited data acquisition and transmission: Production process data is transmitted via wired means, which involves complex wiring, poor flexibility, and is difficult to adapt to scenarios such as large factory areas and mobile equipment, thus limiting the real-time performance of data and the scalability of the system. 3. Delayed equipment maintenance: The use of regular maintenance methods makes it impossible to provide early warnings of malfunctions, resulting in frequent unplanned shutdowns.

[0003] Currently, although there are some automation transformation cases, most are limited to single equipment or partial control, and have failed to achieve intelligent decision-making, accurate metering and wireless data-driven operation throughout the entire process.

[0004] Therefore, a comprehensive solution integrating advanced sensing technology, wireless communication, and data intelligence is needed. Summary of the Invention

[0005] To address the aforementioned problems, this invention proposes an alumina screening device, comprising a wind tunnel chute, a separator, an integrated grinder, and a controller. An aluminum hopper, connected to the wind tunnel chute, is located above the wind tunnel chute, and a level gauge is installed within the wind tunnel chute. The outlet of the wind tunnel chute is connected to the inlet of the separator, a weighing sensor is installed at the output port of the separator, the discharge port of the separator is connected to the inlet of the integrated grinder, and the alumina outlet of the integrated grinder is connected to the inlet of the separator. The wind tunnel chute, level gauge, sorter, weighing sensor, and integrated grinding machine are all connected to the controller.

[0006] Furthermore, an air pipe is provided on the upper surface of the wind tunnel chute, the air pipe is located on the side of the aluminum hopper, and the air pipe is connected to the wind tunnel chute.

[0007] Furthermore, the wind tunnel chute and the sorting machine are connected by at least one pipe, and a valve is installed on the pipe, which is communicatively connected to the controller.

[0008] Furthermore, a first electric actuator is provided in the feeding port of the sorting machine, and the first electric actuator is communicatively connected to the controller.

[0009] Furthermore, a second electric actuator is provided in the alumina outlet of the integrated grinding machine, and the second electric actuator is electrically connected to the controller.

[0010] Furthermore, the alumina screening device also includes a weighing instrument, wherein the weighing sensor is communicatively connected to the weighing instrument, and the weighing instrument is communicatively connected to the controller.

[0011] Furthermore, a third electric actuator is installed in the waste discharge port of the integrated grinding machine.

[0012] Furthermore, the controller includes a 5G IoT gateway, a SCADA monitoring system, and a cloud platform server, and the controller, 5G IoT gateway, SCADA monitoring system, and cloud platform server are all communicatively connected.

[0013] An alumina screening system, comprising, The equipment layer includes a wind tunnel chute, a separator, and an integrated grinding machine connected in sequence; the wind tunnel chute and the separator screen alumina, and the integrated grinding machine grinds large alumina particles; The data acquisition layer includes a level gauge that acquires the height of alumina in the wind tunnel chute, and a weighing sensor that acquires the weight of the pure alumina. The control system layer includes a controller, which is communicatively connected to the wind tunnel chute, separator, integrated grinder, level gauge and weighing sensor; The cloud platform application layer includes a SCADA monitoring system, which stores screening and sorting strategy optimization models, material balance analysis systems, and equipment predictive maintenance models.

[0014] Furthermore, the controller is communicatively connected to the SCADA monitoring system.

[0015] Beneficial effects: 1. The alumina screening device of the present invention includes a wind tunnel chute, a separator, and an integrated grinder. An aluminum silo is provided above the wind tunnel chute and connected to it. A level gauge is installed in the wind tunnel chute. The outlet of the wind tunnel chute is connected to the inlet of the separator. A weighing sensor is installed in the outlet of the separator. The discharge port of the separator is connected to the inlet of the integrated grinder. The alumina outlet of the integrated grinder is connected to the inlet of the separator. Alumina minerals are screened through the wind tunnel chute and the separator. Large particles of alumina are ground by the integrated grinder and then screened again by the separator. The weighing sensor detects the screened alumina in real time and accurately measures the amount of alumina discharged each time, making the screening effect quantifiable and traceable.

[0016] 2. The controller of the alumina screening device of the present invention includes a 5G IoT gateway, a SCADA monitoring system, and a cloud platform server. The controller, 5G IoT gateway, SCADA monitoring system, and cloud platform server are all communicatively connected. Human-machine interaction is realized through the SCADA monitoring system, and communication connection is realized through the 5G IoT gateway; this reduces the wiring layout and improves the application scenarios.

[0017] 3. The alumina screening system of the present invention includes a predictive maintenance model. The predictive maintenance model analyzes characteristic parameters such as valve action time, current and vibration curves of the sorting machine, and generates early warning work orders before equipment performance deteriorates by trend judgment and threshold comparison. The early warning work orders are automatically pushed to the mobile terminals of maintenance personnel, changing "passive inspection" to "proactive maintenance".

[0018] Other features and advantages of the invention will be set forth in the following description, and will be apparent in part from the description, or may be learned by practicing the invention. The objects and other advantages of the invention can be realized and obtained by means of the structures pointed out in the description and the drawings. Attached Figure Description

[0019] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0020] Figure 1 A schematic diagram of an alumina screening device in an embodiment of the present invention is shown.

[0021] Figure 2 A schematic diagram of the alumina screening system in an embodiment of the present invention is shown.

[0022] In the diagram, 1. Wind tunnel chute; 101. Discharge outlet; 2. Level gauge; 3. First sand removal valve; 4. Second sand removal valve; 5. Third sand removal valve; 6. Separator; 601. Output port; 602. Feed port; 7. Controller; 8. Weighing sensor; 9. Weighing instrument; 10. 5G IoT gateway; 11. SCADA monitoring system; 12. Cloud platform server; 13. Integrated grinding mill; 131. Waste discharge outlet; 132. Alumina outlet; 14. Air pipe; 15. Aluminum silo; 16. First electric actuator; 17. Second electric actuator; 18. Third electric actuator. Detailed Implementation

[0023] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. 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.

[0024] Example 1 refer to Figure 1 An alumina screening device includes a wind tunnel sluice 1, a separator 6, and an integrated grinder 13. An aluminum silo 15, connected to the wind tunnel sluice 1, is located above the wind tunnel sluice 1 and is used to store unscreened alumina. A level gauge 2 is installed in the wind tunnel sluice 1. The outlet 101 of the wind tunnel sluice 1 is connected to the inlet 603 of the separator 6. Specifically, there are three outlets 101 and inlets 603. A weighing sensor 8 is installed in the output port 601 of the separator 6. The discharge port 602 of the separator 6 is connected to the inlet of the integrated grinder 13. The alumina outlet 132 of the integrated grinder 13 is connected to the inlet 603 of the separator 6. The alumina minerals are screened through the wind tunnel sluice 1 and the separator 6. Large alumina particles are ground by the integrated grinder 13 and then screened again by the separator 6.

[0025] The alumina screening device also includes a controller 7, and the wind tunnel chute 1, level gauge 2, separator 6, weighing sensor 8, and integrated grinding machine 13 are all communicatively connected to the controller 7. Specifically, the level gauge 2 and weighing sensor 8 send the detected data to the controller 7, and the controller 7 controls the operation of the wind tunnel chute 1, separator 6, and integrated grinding machine 13, thereby realizing the alumina screening operation.

[0026] In this invention, an air pipe 14 is provided on the upper surface of the wind tunnel chute 1. The air pipe 14 is located on the side of the aluminum silo 15 and is connected to the wind tunnel chute 1. Compressed air enters through the air pipe 14, thereby facilitating the preliminary screening of alumina minerals by the wind tunnel chute 1.

[0027] In the above embodiments, another optional implementation is that the wind tunnel chute 1 and the separator 6 are connected by at least one pipe, and a valve is installed on the pipe, which is communicatively connected to the controller 7. Specifically, the wind tunnel chute 1 and the separator 6 are connected by three pipes, and a first sand removal valve 3, a second sand removal valve 4, and a third sand removal valve 5 are respectively installed on the three pipes.

[0028] Furthermore, a first electric actuator 16 is provided in the feed inlet 602 of the sorting machine 6, and the first electric actuator 16 is communicatively connected to the controller 7. By providing the first electric actuator 16, the first electric actuator 16 can push large alumina particles and impurities into the integrated grinding mill 13.

[0029] In this invention, a second electric actuator 17 is provided in the alumina outlet 132 of the integrated grinding mill 13, and the second electric actuator 17 is electrically connected to the controller 7. By providing the second electric actuator 17, the second electric actuator 17 can push the ground alumina into the sorting machine 6.

[0030] refer to Figure 1 The alumina screening device also includes a weighing instrument 9, a weighing sensor 8 that is communicatively connected to the weighing instrument 9, and a weighing instrument 9 that is communicatively connected to the controller 7. Data detected by the weighing sensor 8 is transmitted to the weighing instrument 9 and then to the controller 7, thus achieving wireless data transmission.

[0031] In this invention, the controller 7 includes a 5G IoT gateway 10, a SCADA monitoring system 11 (Supervisory Control and Data Acquisition), and a cloud platform server 12. The controller 7, 5G IoT gateway 10, SCADA monitoring system 11, and cloud platform server 12 are all communicatively connected. Human-machine interaction is achieved through the SCADA monitoring system 11, communication connectivity is achieved through the 5G IoT gateway 10, and cloud platform backup is achieved through the cloud platform server 12.

[0032] In one alternative embodiment described above, a third electric actuator 18 is provided in the waste discharge port 131 of the integrated grinding mill 13. Impurities are discharged via the third electric actuator 18.

[0033] Example 2 refer to Figure 1Fresh alumina in aluminum bin 15 leaks evenly onto the wind tunnel chute 1 at a certain speed. Simultaneously, an air pipe 14 is installed on the wind tunnel chute 1. The airflow through the air pipe 14 performs preliminary screening of the fresh alumina flowing from aluminum bin 15. When the amount of relatively pure alumina screened out reaches a certain level (when the controller 7 detects that the signal from the level gauge 2 has reached a preset height, for example, 90%), the discharge procedure is immediately and automatically initiated. Firstly, the controller 7 is electrically connected to the first desanding valve 3, the second desanding valve 4, and the third desanding valve 5. The controller 7 controls the first desanding valve 3 to open. After a period of time, For 10-50 seconds, controller 7 controls the first sand removal valve 3 to close; then controller 7 controls the second sand removal valve 4 to open. After a certain period of time, controller 7 controls the second sand removal valve 4 to close; then controller 7 controls the third sand removal valve 5 to open. After a certain time, controller 7 controls the third sand removal valve 5 to close; then the first sand removal valve 3, the second sand removal valve 4, and the third sand removal valve 5 are repeatedly opened; by repeatedly opening the first sand removal valve 3, the second sand removal valve 4, and the third sand removal valve 5 in sequence, the stability and efficiency of the sand discharge process are ensured, and the automatic sequential control and safety interlock of the screening valve group are realized; through the above-mentioned automatic discharge program, the alumina after preliminary screening is evenly discharged to the separator 6, and the alumina is subjected to secondary screening by the separator 6.

[0034] Furthermore, the sorting machine 6 generates a precisely controllable airflow field according to preset parameters, separating most of the qualified alumina sand particles from the raw material; and discharges them through the output port 601. A weighing sensor 8 is installed on the wall of the output port 601 to measure the weight of the qualified alumina sand particles and transmit the weight signal to the controller 7; through the integrated weighing system, the amount of alumina discharged each time is accurately measured, making the screening effect quantifiable and traceable.

[0035] Large particles of material that have settled after being screened by the separator 6 and still contain recyclable alumina are fed into the integrated grinder 13 through the feed port 602 of the separator 6 for crushing and dissociation. A first electric actuator 16 is installed in the feed port 602 to push the large particles. In the integrated grinder 13, the large particles are precisely sorted and circulated for grinding. The large alumina particles are ground, while harder materials such as iron and copper are discharged through the waste discharge port 131. A third electric actuator 18 is installed in the waste discharge port to discharge harder or other impurities. This is to maximize the recovery of useful raw materials and finally discharge the remaining worthless impurities. The ground alumina is then fed back into the separator 6 through the second electric actuator 17 for further screening.

[0036] Furthermore, the pure alumina sand finally separated from the sorter 6 is discharged through the output port 601. A weighing sensor 8 is installed in the output port 601 for real-time accurate measurement. The weighing sensor 8 is electrically connected to the weighing instrument 9, transmitting the weighing data to the weighing instrument 9 in real time. At the same time, the weighing instrument 9 sends stable weight data to the cloud platform server 12 through the 5G IoT gateway 10, and binds and stores it with information such as the time of the screening event and the valve action sequence. By utilizing 5G IoT technology, low-latency and highly reliable wireless transmission of production data is achieved, improving the system deployment flexibility and scalability.

[0037] Managers can monitor the overall production dynamics in real time through the SCADA monitoring system 11 and remotely fine-tune sorting parameters. The cloud platform server 12 drives iterative updates of the screening and sorting strategy optimization model based on current and historical data, and analyzes status trends through the equipment predictive maintenance model, generating early warning work orders before anomalies occur and proactively pushing them to the maintenance terminal. The screening and sorting strategy optimization model adaptively adjusts control parameters based on accumulated screening effects and sorting purity data, thereby achieving system self-learning and continuous optimization. A sand removal strategy optimization model based on real-time data (including screening volume) is constructed to improve screening efficiency and raw material utilization; a predictive maintenance mechanism is established to reduce unplanned downtime; and comprehensive digital, transparent, and precise management of the production process is achieved. The screening process is unmanned, intelligent, and quantifiable.

[0038] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

[0039] Example 3 refer to Figure 2 This invention constructs an alumina screening system, which consists of four core layers: equipment layer, control and acquisition layer, network transmission layer, and cloud platform application layer.

[0040] The device layer specifically includes: Sensing unit: Level gauge 2, accurately detects the material accumulation height at the bottom of the wind tunnel chute 1, and provides a trigger signal for automatic sand discharge; Weighing sensor 8 collects the weight of pure alumina.

[0041] The execution unit includes a wind tunnel chute 1, a separator 6, and an integrated grinder 13 connected in sequence. The wind tunnel chute 1 and the separator 6 screen alumina, while the integrated grinder 13 grinds large alumina particles. The separator 6 achieves precise separation of alumina and sand particles based on the difference in material density and particle size through controllable airflow.

[0042] The control and acquisition layer specifically includes: Controller 7: Employs a high-performance PLC with built-in optimized sand removal control logic to achieve: Sequential start-stop control: Coordinated timing control of the screening valve group (first sand removal valve 3, second sand removal valve 4 and third sand removal valve 5) and the separator 6.

[0043] Safety interlock protection: Establish interlocking logic between equipment to prevent misoperation.

[0044] Fault diagnosis: Real-time monitoring of the status of actuators (aluminum bin 15, wind tunnel chute 1, level gauge 2, first sand removal valve 3, second sand removal valve 4, third sand removal valve 5, integrated grinding machine 13, first electric actuator 16, second electric actuator 17, third electric actuator 18 and weighing sensor 8) and sorter 6 to achieve local fault alarm.

[0045] Weighing acquisition unit: It consists of a high-precision weighing sensor 8 and a weighing instrument 9. The weighing sensor 8 is installed at the sand outlet of the sorting machine 6 to accurately measure the net weight of each sand discharge event and to complete the preliminary data processing.

[0046] The network transmission layer specifically includes the 5G IoT gateway 10, which serves as the core network device and possesses multi-protocol conversion capabilities. It collects process status data from the PLC (such as valve status, material level, and operating parameters of the sorter 6) and weight data from the weighing instrument 9, and transmits this data encrypted to the cloud platform via the 5G network in a high-bandwidth, low-latency, and highly reliable manner. This overcomes the limitations of wired deployments and greatly enhances the system's flexibility and scalability.

[0047] The cloud platform application layer specifically includes: SCADA monitoring system: Provides a human-machine interface (HMI) that displays the status of all equipment, process parameters (such as material level, air pressure, and airflow velocity), real-time and historical screening curves, and supports remote manual intervention and parameter adjustment.

[0048] Screening and sorting strategy optimization model: Based on historical and real-time data (such as screening volume trend, material level change rate, and purity of sorted materials), the algorithm model dynamically optimizes the sand discharge trigger threshold, valve action time, and working parameters of the sorter 6 (such as damper opening) to achieve the comprehensive optimization of screening efficiency and energy consumption.

[0049] Material balance analysis system: It correlates the upstream input and screening quantities, automatically calculates the screening rate and raw material loss, and provides accurate data support for production cost accounting and process evaluation.

[0050] Predictive maintenance model for equipment: Analyze characteristic parameters such as valve action time, current and vibration curve of the 6th fan of the sorter, and generate early warning work orders before equipment performance deteriorates through trend analysis and threshold comparison. The work orders are automatically pushed to the mobile terminals of maintenance personnel, transforming "passive inspection" into "proactive maintenance".

[0051] Although the present invention 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 of the technical features; and these modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An alumina screening device, characterized in that, The system includes a wind tunnel chute (1), a separator (6), an integrated grinding mill (13), and a controller (7). An aluminum hopper (15) connected to the wind tunnel chute (1) is provided above the wind tunnel chute (1). A level gauge (2) is provided in the wind tunnel chute (1). The outlet (101) of the wind tunnel chute (1) is connected to the inlet (603) of the separator (6). A weighing sensor (8) is provided in the output port (601) of the separator (6). The discharge port (602) of the separator (6) is connected to the inlet of the integrated grinding mill (13). The alumina outlet (132) of the integrated grinding mill (13) is connected to the inlet (603) of the separator (6). The wind tunnel chute (1), level gauge (2), sorter (6), weighing sensor (8) and integrated grinding machine (13) are all connected to the controller (7).

2. The alumina screening device according to claim 1, characterized in that, An air pipe (14) is provided on the upper surface of the wind tunnel chute (1). The air pipe (14) is located on the side of the aluminum silo (15) and is connected to the wind tunnel chute (1).

3. The alumina screening device according to claim 2, characterized in that, The wind tunnel chute (1) and the sorting machine (6) are connected by at least one pipe, and a valve is installed on the pipe. The valve is connected in communication with the controller (7).

4. The alumina screening device according to claim 3, characterized in that, The sorting machine (6) has a first electric actuator (16) installed in the discharge port (602), and the first electric actuator (16) is connected to the controller (7) in communication.

5. The alumina screening device according to claim 1, characterized in that, The integrated grinding mill (13) has a second electric actuator (17) installed in the alumina outlet (132), and the second electric actuator (17) is electrically connected to the controller (7).

6. The alumina screening device according to claim 1, characterized in that, The alumina screening device also includes a weighing instrument (9), the weighing sensor (8) is connected to the weighing instrument (9) in communication, and the weighing instrument (9) is connected to the controller (7) in communication.

7. The alumina screening device according to claim 1, characterized in that, The integrated grinding mill (13) is equipped with a third electric actuator (18) in the waste discharge port (131).

8. An alumina screening device according to any one of claims 1-7, characterized in that, The controller (7) includes a 5G IoT gateway (10), a SCADA monitoring system (11), and a cloud platform server (12). The controller (7), the 5G IoT gateway (10), the SCADA monitoring system (11), and the cloud platform server (12) are all connected in communication.

9. An alumina screening system, characterized in that, include, The equipment layer includes a wind tunnel chute (1), a sorting machine (6), and an integrated grinding machine (13) connected in sequence; the wind tunnel chute (1) and the sorting machine (6) screen alumina, and the integrated grinding machine (13) grinds large alumina particles; The data acquisition layer includes a level gauge (2) and a weighing sensor (8). The level gauge (2) acquires the height of alumina in the wind tunnel chute (1), and the weighing sensor (8) acquires the weight of pure alumina. The control system layer includes a controller (7), which is communicatively connected to the wind tunnel chute (1), the sorter (6), the integrated grinder (13), the level gauge (2), and the weighing sensor (8); The cloud platform application layer includes a SCADA monitoring system (11), which stores a screening and sorting strategy optimization model, a material balance analysis system, and an equipment predictive maintenance model.

10. An alumina screening system according to claim 9, characterized in that, The controller (7) is connected to the SCADA monitoring system (11) for communication.

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