A fine-grained hydrous metal ore anti-clogging storage system

Abstract

This invention discloses a clog-preventing storage system for fine-grained hydrous metal ore, comprising: a feeding section, including a feeding belt, a feeding belt, and a discharger; a storage section, located below the feeding section, including a hopper and a weighing sensor; and a discharge section, located below the storage section, including a vibrating hopper, a disc feeder, a discharge belt, and a belt scale. The clog-preventing storage system for fine-grained hydrous metal ore utilizes the periodic mechanical vibration of a vibrating motor to strike the sidewalls of the vibrating hopper, thus preventing clogs. The weighing sensor detects the overall weight of the hopper, and the belt scale detects the weight of the fine-grained hydrous metal ore on the discharge belt to determine if a clog has occurred. When a clog occurs, the vibrating motor on the vibrating hopper is continuously activated to help clear the blockage.

Description

Technical Field

[0001] This invention relates to the field of material storage and transportation technology in metallurgical mines and beneficiation plants, and particularly to a clog-proof storage system for fine-grained hydrous metal ores. Background Technology

[0002] In mineral processing plants, excessive crushing and minimal grinding are the most effective methods to reduce energy consumption and lower production costs. With advancements in mineral processing technology and equipment, crushing particle size has been significantly reduced. For example, high-pressure roller mills combined with micro-powder screens have reduced crushed ore particle size from the traditional 12mm to 1-3mm. Simultaneously, some processes require even finer materials. For instance, the suspension magnetized roasting process requires over 50% of the material in the feed silo to be between 0 and 0.074mm, with a moisture content of around 10%. This places extremely high demands on the entire storage system. Traditional storage systems can no longer meet these process requirements, leading to problems such as poor material flow, ore blockages, and severe production disruptions. Furthermore, due to the fineness and high powder content of the materials, level gauges cannot be used within the silo, hindering intelligent silo control. Summary of the Invention

[0003] The present invention aims to solve at least one of the technical problems existing in the prior art or related art.

[0004] In view of this, the present invention provides a clog-resistant storage system for fine-grained hydrous metal ores, comprising:

[0005] The fabric feeding section includes a feed belt, a fabric feeding belt, and a discharger. The feed belt is located above the fabric feeding belt. The feed belt transports the fine-grained hydrous metal ore to the fabric feeding belt through a transfer funnel. The fabric feeding belt is connected to the discharger.

[0006] The storage section is located below the fabric section. The storage section includes a hopper and a weighing sensor. The unloader is correspondingly arranged above the hopper. The fine-grained water-containing metal ore is conveyed to the hopper through the unloader and the head funnel of the fabric conveyor belt. The weighing sensor is located on the hopper and is used to detect the overall weight of the hopper.

[0007] The discharge section is located below the storage section. The discharge section includes a vibrating funnel, a disc feeder, a discharge belt, and a belt scale. The upper part of the vibrating funnel is connected to the lower part of the silo body, and the lower part of the vibrating funnel is connected to the disc feeder. The disc feeder is connected to the discharge belt, and the belt scale is installed on the discharge belt.

[0008] Furthermore, the fine-grained hydrous metal ore has a particle size of less than 3 mm and a moisture content of 0-20%, especially referring to fine-grained hydrous metal ore with a particle size of 0-0.074 mm or more and a moisture content of 5-15%.

[0009] Furthermore, the feed conveyor belt is 2-4m higher than the fabric conveyor belt.

[0010] Furthermore, the storage section includes several bins, with the bins at the ends located below the head funnel of the fabric tape. Except for the bins at the ends, each bin is equipped with two unloaders above it, and each bin at the ends is equipped with one unloader.

[0011] Furthermore, the silo body includes an upper vertical section and a lower inclined section. The diameter of the vertical section is not less than 8000 mm, the angle between the inclined section and the horizontal direction is not less than 70°, and the diameter of the bottom discharge port of the inclined section is not less than 2500 mm.

[0012] Furthermore, the inner lining of the hopper is a nylon liner with a thickness of 10–30 mm.

[0013] Furthermore, the storage section also includes an air-assisted flow device disposed in the inclined section of the silo body. The air-assisted flow device uses compressed gas as the working medium and includes multiple sets of flow-assisted nozzles arranged in a ring in the inclined section of the silo body.

[0014] Furthermore, it also includes a maintenance hoist, which is installed in the material feeding section and the material discharging section, and is used for the maintenance of the anti-blockage storage system.

[0015] Furthermore, the disc feeder adopts frequency conversion speed regulation, and the rotation direction of the disc feeder is adjustable.

[0016] Furthermore, it also includes a control unit, which is connected to the unloader, the weighing sensor, the airflow aid, the vibrating hopper, the disc feeder, and the belt scale respectively; the control unit controls the weight of the hopper through the unloader and the weighing sensor; the control unit determines whether there is material blockage based on the data from the belt scale and the weighing sensor; when there is material blockage, the control unit starts the vibration motor of the airflow aid and the vibrating hopper to increase the operating frequency of the disc feeder.

[0017] Compared with the prior art, the present invention has at least the following beneficial effects:

[0018] The anti-clogging storage system for fine-grained hydrous metal ore provided by this invention uses a vibrating motor to periodically vibrate and strike the side wall of the vibrating funnel, thereby preventing clogging. The overall weight of the storage unit is detected by a weighing sensor, and the weight of the fine-grained hydrous metal ore on the discharge conveyor belt is detected by a belt scale to determine whether clogging has occurred. When clogging occurs, the vibrating motor on the vibrating funnel is continuously turned on to help clear the blockage. Attached Figure Description

[0019] Various other advantages and benefits will become apparent to those skilled in the art upon reading the following detailed description of preferred embodiments. The accompanying drawings are for illustrative purposes only and are not intended to limit the scope of this application. Furthermore, the same reference numerals denote the same parts throughout the drawings. In the drawings:

[0020] Figure 1 This is a front view of a micro-particle hydrous metal ore anti-clogging storage system provided in an embodiment of this application.

[0021] Figure 2 This is a top view of the discharge section of a micro-particle hydrous metal ore anti-clogging storage system provided in an embodiment of this application.

[0022] The correspondence between the reference numerals and the component names is as follows:

[0023] 1. Feeding belt; 2. Closing belt; 3. Unloader; 4. Bin; 5. Weighing sensor; 6. Airflow aid; 7. Vibrating funnel; 8. Disc feeder; 9. Discharge belt; 10. Maintenance hoist; 11. Belt scale; 12. Vibrating motor. Detailed Implementation

[0024] To better understand the above technical solutions, the technical solutions of the embodiments of this application will be described in detail below with reference to the accompanying drawings and specific embodiments. It should be understood that the embodiments of this application and the specific features in the embodiments are detailed descriptions of the technical solutions of the embodiments of this application, rather than limitations on the technical solutions of this application. In the absence of conflict, the embodiments of this application and the technical features in the embodiments can be combined with each other.

[0025] See Figure 1 and Figure 2 This invention provides a clog-resistant storage system for fine-grained hydrous metal ores, comprising:

[0026] The feeding section includes a feed belt 1, a feeding belt 2, and a discharger 3. The feed belt 1 is located above the feeding belt 2. The feed belt 1 transports fine-grained water-bearing metal ore to the feeding belt 2 through a transfer funnel. The feeding belt 2 is connected to the discharger 3.

[0027] The storage section is located below the fabric section. The storage section includes a bin 4 and a weighing sensor 5. A discharger 3 is installed above the bin 4. Fine-grained water-containing metal ore is conveyed to the bin 4 through the discharger 3 and the head funnel of the fabric belt 2. The weighing sensor 5 is located on the bin 4 and is used to detect the overall weight of the bin 4.

[0028] The discharge section is located below the storage section. The discharge section includes a vibrating funnel 7, a disc feeder 8, a discharge conveyor belt 9, and a belt scale 11. The upper part of the vibrating funnel 7 is connected to the lower part of the silo body 4. The lower part of the vibrating funnel 7 is connected to the disc feeder 8. The disc feeder 8 is connected to the discharge conveyor belt 9. The discharge conveyor belt 9 is equipped with a belt scale 11.

[0029] Specifically, the vibrating funnel 7 is installed at the lower part of the silo body 4, and the vibrating motor 12 is installed on the side wall of the vibrating funnel 7. The vibrating motor 12 is controlled to periodically vibrate to knock on the side wall of the vibrating funnel 7, which plays a role in preventing blockage. The silo body 4 includes several, and each silo body 4 is equipped with a weighing sensor 5 to detect the overall weight of each silo body 4. The discharge conveyor belt 9 includes several, and each discharge conveyor belt 9 is equipped with a belt scale 11 to measure the weight of the material.

[0030] This invention provides a micro-particle hydrous metal ore anti-clogging storage system. The system uses a weighing sensor 5 to detect the overall weight of the silo 4 and a belt scale 11 to detect the weight of the micro-particle hydrous metal ore on the discharge belt 9 to determine whether a blockage has occurred. When the data on the belt scale 11 decreases significantly while the weight on the weighing sensor 5 increases, a blockage has occurred. When a blockage occurs, the vibration motor 12 on the vibrating funnel 7 is continuously turned on to help clear the blockage.

[0031] In some embodiments, the fine-grained hydrous metal ore has a particle size of less than 3 mm and a moisture content of 0–20%, particularly referring to fine-grained hydrous metal ore with a particle size of 0–0.074 mm or more and a moisture content of 5–15%. Such fine-grained hydrous metal ore is prone to problems such as obstruction and blockage during feeding.

[0032] In some embodiments, the feed conveyor belt 1 is 2-4m higher than the cloth conveyor belt 2.

[0033] Specifically, the feeding area of ​​this anti-blocking storage system is 2-4m higher than the material distribution area, that is, the feeding belt 1 is 2-4m higher than the material distribution belt 2, preferably 3m. This setting reduces the investment of the entire workshop.

[0034] In some embodiments, the storage section includes a plurality of bins 4, with the end bins 4 located below the head funnel of the fabric tape 2. Except for the end bins 4, each bin 4 is provided with two unloaders 3 above it, and the end bins 4 are provided with one unloader 3 above it.

[0035] Specifically, the storage section includes several bins 4, each equipped with a weighing sensor 5 to detect the overall weight of each bin 4. The funnel at the head of the conveyor belt 2 directly feeds the fine-grained hydrous metal ore into the bins 4 located at the ends. A discharger 3 is located above the end bin 4, and two dischargers 3 are located above each of the remaining bins. The dischargers 3 can be plow-type dischargers. By setting two dischargers 3 above the bins 4, one active and one standby, the reliability of the anti-clogging storage system is ensured.

[0036] In some embodiments, the silo body 4 includes an upper vertical section and a lower inclined section. The diameter of the vertical section is not less than 8000 mm, the angle of the inclined section is not less than 70°, and the diameter of the bottom discharge port of the inclined section is not less than 2500 mm. The inner lining of the silo body 4 is a nylon liner with a thickness of 10–30 mm.

[0037] Specifically, the silo body 4 consists of a vertical section and an inclined section. The diameter of the vertical section is not less than 8000mm, and the height of the vertical section is adjusted according to the storage requirements. The vertical section is made of 10mm thick steel plate. The angle between the inclined section and the horizontal direction is not less than 70°. The diameter of the discharge port at the bottom of the silo body 4 is not less than 2500mm. The large diameter discharge port facilitates ore discharge and prevents material blockage. The inclined section is made of 12mm steel plate. The entire silo body 4 is lined with a 10-30mm thick nylon liner, preferably a 20mm thick smooth flame-retardant nylon liner, to prevent materials from sticking to the inner wall.

[0038] In some embodiments, the storage section further includes an air-assisted flow device 6 disposed in the inclined section of the silo body 4. The air-assisted flow device 6 uses compressed gas as the working medium and includes multiple sets of flow-assisted nozzles arranged in a ring in the inclined section of the silo body 4.

[0039] Specifically, an air-assisted flow device 6 is arranged in the lower inclined section of the silo body 4. The air-assisted flow device 6 uses compressed gas as the working medium. By arranging multiple sets of flow-assisted nozzles in a ring shape in the lower inclined section of the silo body 4, the frictional resistance between the fine-particle water-containing metal mineral material and the silo wall is reduced, as is the frictional force between the fine-particle water-containing metal mineral particles.

[0040] In some embodiments, a maintenance hoist 10 is also included, which is located in the material feeding section and the material discharging section and is used for maintenance of the storage system to prevent blockage.

[0041] Specifically, maintenance hoists 10 are installed in the ore feeding area, the material feeding area, and the material discharge area, and maintenance is carried out through the maintenance hoists 10.

[0042] In some embodiments, the disc feeder 8 adopts frequency conversion speed regulation, and the rotation direction of the disc feeder 8 is adjustable.

[0043] Specifically, the lower part of the vibrating funnel 7 is connected to the disc feeder 8, which uses frequency conversion speed regulation. This serves two purposes: first, it controls the flow rate by changing the material quantity through frequency conversion; second, by increasing the rotational speed of the disc feeder 8, it drives the movement of the material below, preventing blockages. Simultaneously, when the disc feeder 8 is configured for variable direction, the clockwise and counterclockwise rotation of the disc is changed by the forward and reverse rotation of the motor, allowing the disc feeder 8 to feed material to the discharge belt 9 in different directions. This enables material exchange between each bin 4, improving utilization.

[0044] In some embodiments, a control unit is also included, which is connected to the unloader 3, the weighing sensor 5, the air-assisted flow device 6, the vibrating funnel 7, the disc feeder 8, and the belt scale 11 respectively. The control unit controls the weight of the bin 4 through the unloader 3 and the weighing sensor 5. The control unit determines whether there is material blockage based on the data from the belt scale 11 and the weighing sensor 5. When there is material blockage, the control unit starts the vibrating motor 12 of the air-assisted flow device 6 and the vibrating funnel 7 to increase the operating frequency of the disc feeder 8.

[0045] During normal production, the fine-grained, hydrated metallic mineral material requiring storage is conveyed to the feeding area of ​​this system by the feeding conveyor belt 1. It is then fed through a transfer funnel onto the distribution conveyor belt 2 and the unloader 3, and finally into the lower bin 4. The entire bin 4 is weighed by a load cell 5, which is interlocked with the unloader 3 to control the weight of the material in each bin. An air-assisted flow device 6 is installed in the inclined section at the bottom of the bin 4, and a vibrating funnel 7 is installed at the bottom of the bin 4. The lower part of the vibrating funnel 7 is connected to a disc feeder 8. Each discharge conveyor belt 9 is equipped with a belt scale 11 for material measurement, and the material quantity is adjusted by the frequency converter speed regulation of the disc feeder 8. When material blockage occurs in the bin, at a certain frequency of the disc feeder 8, the data on the belt scale 11 decreases significantly, while the weight on the load cell 5 increases, indicating a blockage. At this time, the air-assisted flow device 6 is activated, supplying compressed air, and the vibrating motor on the vibrating funnel 7 is working. At the same time, the disc feeder 8 increases its frequency. When all data tend to stabilize, it is determined that the problem is solved, and the storage system gradually returns to the normal production setting value.

[0046] The anti-clogging storage system for fine-grained hydrous metal ore according to this invention has low investment, stable production, good anti-clogging effect on fine-grained hydrous metal ore, high degree of automation, and low maintenance workload.

[0047] In this invention, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance; the term "multiple" refers to two or more unless otherwise explicitly defined. The terms "install," "connect," "link," and "fix" should be interpreted broadly. For example, "connect" can be a fixed connection, a detachable connection, or an integral connection; "link" can be a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0048] In the description of this invention, it should be understood that the terms "upper," "lower," "left," "right," "front," "rear," 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 unit 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.

[0049] In the description of this specification, the terms "one embodiment," "some embodiments," "specific embodiment," etc., refer to a specific feature, structure, material, or characteristic described in connection with that embodiment or example, which is included in at least one embodiment or example of the present invention. In this specification, the illustrative expressions of the above terms do not necessarily refer to the same embodiment or example. Furthermore, the specific features, structures, materials, or characteristics described may be combined in any suitable manner in one or more embodiments or examples.

[0050] The above are merely preferred embodiments of the present invention and are not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. A clog-resistant storage system for fine-grained hydrous metal ores, characterized in that, include: The fabric section includes a feed belt (1), a fabric belt (2), and a discharger (3). The feed belt (1) is located above the fabric belt (2). The feed belt (1) transports the fine-grained hydrous metal ore to the fabric belt (2) through a transfer funnel. The fabric belt (2) is connected to the discharger (3). The storage section is located below the fabric section. The storage section includes a hopper (4) and a weighing sensor (5). The unloader (3) is correspondingly arranged above the hopper (4). The fine-grained water-containing metal ore is conveyed to the hopper (4) through the unloader (3) and the head funnel of the fabric belt (2). The weighing sensor (5) is located on the hopper (4) and is used to detect the overall weight of the hopper (4). The discharge section is located below the storage section. The discharge section includes a vibrating funnel (7), a disc feeder (8), a discharge conveyor belt (9), and a belt scale (11). The upper part of the vibrating funnel (7) is connected to the lower part of the silo (4), and the lower part of the vibrating funnel (7) is connected to the disc feeder (8). The disc feeder (8) is connected to the discharge conveyor belt (9), and the belt scale (11) is mounted on the discharge conveyor belt (9). The fine-grained hydrous metallic ore has a particle size of 0-0.074 mm accounting for more than 50% and a moisture content of 5-15%. The silo body (4) includes an upper vertical section and a lower inclined section. The diameter of the vertical section is not less than 8000 mm, the angle between the inclined section and the horizontal direction is not less than 70°, and the diameter of the bottom discharge port of the inclined section is not less than 2500 mm. The storage section also includes an air-assisted flow device (6) installed in the inclined section of the silo body (4). The air-assisted flow device (6) uses compressed gas as the working medium. The air-assisted flow device (6) includes multiple sets of flow-assisted nozzles, which are arranged in a ring in the inclined section of the silo body (4). The disc feeder (8) adopts frequency conversion speed regulation, and the rotation direction of the disc feeder (8) is adjustable; The micro-particle water-bearing metal ore anti-clogging storage system also includes a control unit, which is connected to the unloader (3), the weighing sensor (5), the air-assisted flow device (6), the vibrating funnel (7), the disc feeder (8), and the belt scale (11). The control unit controls the weight of the silo (4) through the unloader (3) and the weighing sensor (5). The control unit determines whether there is material blockage based on the data from the belt scale (11) and the weighing sensor (5). When there is material blockage, the control unit starts the vibration motor (12) of the air-assisted flow device (6) and the vibrating funnel (7) to increase the working frequency of the disc feeder (8).

2. The anti-clogging storage system for fine-grained hydrous metal ore according to claim 1, characterized in that, The feed conveyor belt (1) is 2-4m higher than the fabric conveyor belt (2).

3. The anti-clogging storage system for fine-grained hydrous metal ore according to claim 1, characterized in that, The storage section includes several of the bins (4). The bins (4) at the end are located below the head funnel of the fabric tape (2). Except for the bins (4) at the end, two unloaders (3) are provided above each bin (4). One unloader (3) is provided above the bin (4) at the end.

4. The anti-clogging storage system for fine-grained hydrous metal ore according to claim 1, characterized in that, The inner lining of the silo body (4) is a nylon liner with a thickness of 10~30mm.

5. The anti-clogging storage system for fine-grained hydrous metal ore according to claim 1, characterized in that, It also includes a maintenance hoist (10), which is installed in the fabric section and the discharge section and is used for the maintenance of the anti-blockage storage system.

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