A hierarchical intelligent recognition device for microwave-induced mineral phase characteristics of ores

Abstract

The present invention provides a hierarchical intelligent recognition device for microwave-induced ore phase characteristics, which includes a raw ore classification system, a belt conveyor system, a solid-state microwave induction module, an infrared imaging system, a high-definition camera system, and a computer processing system. The computer processing system is connected to the raw ore classification system, the solid-state microwave induction module, the infrared imaging system, the high-definition camera system, and the belt conveyor system, and can control and adjust the solid-state microwave generating power, calculate the solid-state microwave absorption energy and loss, process the infrared real-time image, adjust the belt conveyor speed, view and analyze the real-time high-definition image. The computer processing system is built-in with an intelligent recognition algorithm, which can obtain the differences between ore particles and waste rock particles in terms of average gray level, variance, second-order moment energy, contrast, entropy value, and autocorrelation feature parameters through infrared images, and on this basis, identify ores and waste rocks.

Description

Technical Field

[0001] The present invention relates to the technical field of ore pre-selection and waste rejection during the mining process, and particularly relates to a hierarchical microwave-induced intelligent recognition device for ore phase characteristics. Background Art

[0002] During the mining process, pre-selecting and rejecting waste from the caved ore by removing worthless waste rocks from the ore is of great benefit to reducing the mining cost. In the prior art, there are pre-selection and waste rejection methods such as manual picking, color sorting, image recognition, X-ray fluorescence, laser, and X-ray transmission, but they all have certain defects. The manual picking method has low efficiency, occupies a large amount of labor, and has a high picking cost. XRF estimates the grade of the entire ore by measuring the chemical composition on the surface of the ore, with low accuracy; lasers and near-infrared can only perform shallow surface detection and are suitable for single-particle sorting, and the penetration ability of X-ray transmission technology is limited. These technologies cannot simultaneously meet the characteristics of simplicity, accuracy, large quantity, rapidity, high efficiency, and low cost required for ore pre-concentration.

[0003] Solid-state microwaves have the property of selective heating and strong penetration ability. The sensitivity of minerals to microwaves is closely related to the type of material, dielectric properties, waveguide shape, antenna distance, medium size, medium shape, etc. Different ore components, grades, and sizes have different dynamic response characteristics to solid-state microwaves. Therefore, by measuring the response characteristics of ores in a solid-state microwave field, different minerals can be distinguished to achieve ore pre-selection and waste rejection. Summary of the Invention

[0004] The purpose of the present invention is to provide a hierarchical microwave-induced intelligent recognition device for ore phase characteristics to overcome the influence of ore size on the intelligent recognition technology of solid-state microwave-induced ores, provide a reliable and accurate ore-waste separation test method, and achieve ore pre-selection and waste rejection.

[0005] To solve the above problems, the present invention provides a hierarchical microwave-induced intelligent recognition device for ore phase characteristics, and the technical solution adopted is as follows:

[0006] A hierarchical microwave-induced intelligent recognition device for ore phase characteristics includes a raw ore grading system, a belt conveyor system, a solid-state microwave induction module, an infrared imaging system, a high-definition camera system, and a computer processing system;

[0007] The raw ore grading system is arranged above the belt conveyor system and is used for grading the raw ore. The graded ores respectively fall into the corresponding conveying areas provided on the belt conveyor system, and a solid-state microwave induction module is provided for each conveying area;

[0008] The computer processing system is signal-connected to the raw ore grading system, the belt conveyor system, the solid-state microwave induction module, the infrared imaging system, and the high-definition camera system, and the computer processing system is configured to:

[0009] Based on a preset solid-state microwave radiation time, control the running speed of the belt conveyor system;

[0010] Control the solid-state microwave generation power of each solid-state microwave induction module, and calculate the corresponding solid-state microwave absorption energy and loss energy;

[0011] Based on the solid-state microwave absorption energy, identify ores and waste rocks according to the differences in the dynamic response data of the raw ore under solid-state microwave irradiation collected by the infrared imaging system. The dynamic response data under solid-state microwave irradiation includes one or a combination of average gray level, variance, second-order moment energy, contrast, entropy value, and autocorrelation characteristic parameters;

[0012] Obtain the image data of the raw ore collected by the high-definition camera system when it is transported on the conveyor belt to monitor the abnormal conditions of the raw ore after microwave irradiation.

[0013] Further, the raw ore grading system includes a driving motor, a raw ore bin, a transmission shaft, a spiral sieve barrel, a spiral roller, a grading screen, a grading aggregate bin, and a powder bin. The driving motor controls the spiral roller through the transmission shaft, and the transmission shaft is fixedly connected to the spiral roller. The spiral roller is located inside the spiral sieve barrel. The raw ore bin is open-connected to the spiral sieve barrel, and the ore in the raw ore bin enters the spiral sieve barrel under the action of its own weight. The lower part of the spiral sieve barrel is provided with the detachable grading screen with several grades, and the powder bin and the grading ore bin are correspondingly arranged below. The driving motor is signal-connected to the computer processing system.

[0014] Further, the transmission shaft passes through the spiral sieve barrel and is connected to it through a moving ring plate.

[0015] Further, the belt conveyor system includes a conveyor belt, belt driving wheels, and at least one ore partition. The belt driving wheels are located at both ends of the conveyor belt, the conveyor belt rotates around the driving wheels, and at least one ore partition is arranged above the conveyor belt.

[0016] Further, the conveyor belt and the ore partition are both made of microwave inert materials and do not absorb microwave energy.

[0017] Further, anti-slip patterns are distributed on the upper surface of the conveyor belt to prevent the ore from sliding.

[0018] Further, a plurality of ore partitions are provided, and the distance between two adjacent ore partitions is adjustable.

[0019] Furthermore, the solid-state microwave induction module includes a solid-state microwave generator, a solid-state microwave absorber, and a solid-state microwave power monitor;

[0020] The solid-state microwave generator is used to generate solid-state microwave signals, and the generated solid-state microwave power and coverage range are adjustable and controllable;

[0021] The solid-state microwave absorber is used to recover and detect the energy not absorbed by the raw ore and is located below the conveyor belt;

[0022] The solid-state microwave power monitor is used to monitor the microwave power of the solid-state microwave generator in real time.

[0023] The beneficial effects of the present invention are as follows: A hierarchical microwave-induced ore phase characteristic intelligent recognition device according to an embodiment of the present invention has a small footprint and can complete tests indoors. It can filter fine ore, overcome the uneven wave absorption energy caused by the ore size, and the inaccurate recognition of ore waste. It can also set multi-level microwave induction for each graded ore, accurately control the microwave power of each graded ore, and realize simultaneous online testing of raw ores of multiple sizes. Description of the Drawings

[0024] In order to more clearly illustrate the specific embodiments of the present invention or the technical solutions in the prior art, the following will briefly introduce the drawings required for the description of the specific embodiments or the prior art. In all the drawings, similar elements or parts are generally denoted by similar reference numerals. In the drawings, the elements or parts are not necessarily drawn to scale.

[0025] Figure 1 Shows a front view of a hierarchical microwave-induced ore phase characteristic intelligent recognition device according to an embodiment of the present invention.

[0026] Figure 2 Shows a top view of a hierarchical microwave-induced ore phase characteristic intelligent recognition device according to an embodiment of the present invention.

[0027] In the figure, 1 - drive motor; 2 - transmission shaft; 3 - raw ore bin; 4 - spiral sieve barrel; 5 - spiral roller; 6 - grading screen; 7 - grading aggregate bin; 8 - solid-state microwave induction module; 9 - infrared imaging system; 10 - high-definition camera system; 11 - computer processing system; 12 - computer desk; 13 - ore partition; 14 - belt drive wheel; 15 - conveyor belt; 16 - fine ore bin; 17 - graded ore; 18 - graded waste rock. Detailed Embodiments

[0028] The following specific examples illustrate the embodiments of the present invention. Those skilled in the art can easily understand the other advantages and effects of the present invention from the content disclosed in this specification. The present invention can also be implemented or applied through other different specific embodiments. Various details in this specification can also be modified or changed based on different viewpoints and applications without departing from the spirit of the present invention. It should be noted that, without conflict, the following embodiments and the features in the embodiments can be combined with each other.

[0029] In the description of the present invention, unless otherwise specified, the meaning of "a plurality of" is two or more; the orientation or positional relationships indicated by terms such as "upper", "lower", "left", "right", "inner", "outer", "front end", "rear end", "head", "tail", etc. are based on the orientation or positional relationships shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention. In addition, terms such as "first", "second", "third", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0030] In the description of the present invention, it should be noted that, unless otherwise clearly specified and defined, the terms "connected" and "coupled" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be directly connected or indirectly connected through an intermediate medium. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0031] The following further describes in detail the specific embodiments of the present invention with reference to the drawings and embodiments.

[0032] The embodiment of the present invention provides a hierarchical intelligent recognition device for microwave-induced ore phase characteristics. As Figure 1 and Figure 2 shown, the hierarchical intelligent recognition device for microwave-induced ore phase characteristics includes a raw ore grading system, a belt conveyor system, a solid-state microwave induction module 8, an infrared imaging system 9, a high-definition camera system 10, and a computer processing system 11.

[0033] The original ore grading system includes a driving motor 1, an original ore bin 3, a transmission shaft 2, a spiral sieve barrel 4, a spiral roller 5, a grading screen 6, and a grading aggregate bin 7. The driving motor 1 controls the spiral roller 5 through the transmission shaft 2, and the transmission shaft 2 is fixedly connected to the spiral roller 5. The spiral roller 5 is located inside the spiral sieve barrel 4. The inner diameter of the spiral sieve barrel 4 is about 10 mm larger than the diameter of the spiral roller 5. The transmission shaft 2 passes through the spiral sieve barrel 4 and is connected to it through a moving ring plate. There is an original ore bin 3 between the driving motor 1 and the grading screen 6. The original ore bin 3 is open-connected to the spiral sieve barrel 4, and the ore in the original ore bin 3 enters the spiral sieve barrel 4 under the action of its own weight. The lower part of the spiral sieve barrel 4 is equipped with a detachable grading screen 6, and there is a fine ore bin 16 and a grading aggregate bin 7 below. The original ore grading system is inclined upward by about 15°. The driving motor 1 can be automatically controlled by a computer processing system 11, and the grading screen 6 refers to grading screens under various grading standards.

[0034] In specific implementation, the ore enters the spiral sieve barrel 4 through the original ore bin 3. The driving motor 1 drives the spiral roller 5 to rotate through the transmission shaft 2, providing forward driving force for the ore, and cooperating with the grading screen 6 to screen the ore during the process, obtaining ore raw materials with different particle sizes, which respectively enter into each grading aggregate bin 7, and the fine ore will enter into the fine ore bin 16. Each grading aggregate bin 7 corresponds to an area in the belt conveyor system, so as to intelligently identify the graded ores 17 with different particle sizes through a solid-state microwave induction module, an infrared imaging system, and a computer processing system, and identify the graded ores and waste stones 18 among them.

[0035] It should be noted that each grading aggregate bin 7 corresponds to a grading screen 6 respectively, and the specific number of grading aggregate bins 7 can be reasonably determined according to actual different situations, and this embodiment does not limit it here.

[0036] Exemplarily, this embodiment mainly identifies the original ore in each grading aggregate bin 7, and does not identify the fine ore bin 16, that is, the fine ore in the fine ore bin 16 does not flow out to the belt conveyor system. The grading aggregate bins 7 are preferably set to five, respectively corresponding to collecting original ores with different particle sizes.

[0037] The belt conveyor system includes a conveyor belt 15, a belt driving wheel 14, and an ore partition 13. The belt driving wheel 14 is located at both ends of the conveyor belt 15, and the conveyor belt 15 rotates around the belt driving wheel 14. The ore partition 13 is located above the conveyor belt 15 to divide the conveyor belt 15 into multiple areas to receive the graded ores from different grading aggregate bins 7, and the distance between the partitions can be intelligently adjusted.

[0038] The conveyor belt 15 and the ore partition 13 are made of microwave inert materials and do not absorb microwave energy. The upper surface of the conveyor belt 15 is distributed with anti-slip lines to prevent the ore from sliding. The rotation speed of the belt driving wheel 14 can be automatically controlled by the computer processing system.

[0039] The solid-state microwave induction module 8 is connected to the computer processing system 11 and is located above the conveyor belt 15. It includes a solid-state microwave generator, a solid-state microwave absorber, and a solid-state microwave power monitor. The solid-state microwave generator can generate solid-state microwave signals, and the generated solid-state microwave power, coverage range, and distance from the ore are adjustable and controllable. The solid-state microwave absorber recovers the energy not absorbed by the ore and is located below the conveyor belt. The solid-state microwave power monitor can monitor the microwave power of the solid-state microwave generator in real time and is connected to the computer processing system. The waveguide of the solid-state microwave induction module can be arranged in multiple levels along the direction of the conveyor belt to achieve precise control of the microwave power of the classified ore.

[0040] The infrared imaging system 9 is located behind the conveyor belt 15 and can monitor the infrared image of the ore after solid-state microwave irradiation in real time. It is connected to the computer processing system 11 and transmits the infrared image in real time.

[0041] The high-definition camera system 10 is used for safety monitoring to monitor the abnormal conditions of the ore after microwave irradiation. It is located above the conveyor belt and is connected to the computer processing system 11.

[0042] The computer processing system 11 is connected to the raw ore classification system, the solid-state microwave induction module 8, the infrared imaging system 9, the high-definition camera system 10, and the belt conveyor system. It is specifically configured as follows:

[0043] Based on the preset solid-state microwave radiation time, the running speed of the belt conveyor system is controlled by controlling the belt drive wheel 14 to ensure that both the classified ore 17 and the classified waste rock 18 can be heated up at the preset solid-state microwave generating power, which is beneficial for subsequent identification of the ore 2 and the waste rock 3 through the temperature rise rate.

[0044] Control the solid-state microwave generating power of each solid-state microwave induction module 8 and calculate the corresponding solid-state microwave absorption energy.

[0045] Based on the solid-state microwave absorption energy, identify the ore and the waste rock according to the differences in the dynamic response data of the raw ore collected by the infrared imaging system 9 under solid-state microwave irradiation. The dynamic response data under solid-state microwave irradiation includes one or a combination of average gray scale, variance, second-order moment energy, contrast, entropy value, and autocorrelation characteristic parameters.

[0046] It is understandable that the differences in the dynamic response data of the guided raw ore collected by the infrared imaging system 9 under solid-state microwave irradiation will reflect the temperature rise rates of the classified ore 17 and the classified waste rock 18 under known solid-state microwave absorption energy, whereby the classified ore 17 and the classified waste rock 18 can be identified. Only by way of example, one or a combination of the average gray level, variance, second moment energy, contrast, entropy value, and autocorrelation characteristic parameters is compared with the corresponding preset recognition threshold. If the preset recognition threshold is reached, it is determined as ore; otherwise, it is determined as waste rock.

[0047] Obtain the image data of the raw ore collected by the high-definition camera system 10 during transmission on the rotary conveyor belt to monitor the abnormal conditions of the raw ore after microwave irradiation. For example, when it is found that the shape of the raw ore has changed under the action of a certain solid-state microwave generating power, the solid-state microwave generating power can be adjusted to enable the normal operation of the identification of the raw ore.

[0048] It should be noted that the computer processing system 11 described herein is an existing device that can implement the intelligent control process as described above, such as an industrial computer, etc. Figure 1 and Figure 2 The schematic diagram of selecting an industrial computer deployed on a computer desk is shown in [Figure], and the staff can enter the corresponding control parameters based on the computer processing system 6 to achieve the intelligent identification of the classified ore 17 and the classified waste rock 18.

[0049] The above embodiments are only used to illustrate the present invention and are not intended to limit the present invention. Those of ordinary skill in the relevant technical field can also make various changes and modifications without departing from the spirit and scope of the present invention. Therefore, all equivalent technical solutions also belong to the scope of the present invention, and the patent protection scope of the present invention shall be defined by the claims.

Claims

1. A hierarchical intelligent recognition device for microwave-induced mineral phase characteristics of ores, characterized in that, It includes a raw ore grading system, a belt conveyor system, a solid-state microwave induction module, an infrared imaging system, a high-definition camera system, and a computer processing system; The raw ore grading system is arranged above the belt conveyor system and is used for grading the raw ore. The graded ores respectively fall into the corresponding conveying areas arranged on the belt conveyor system, and a solid-state microwave induction module is respectively arranged for each conveying area; The solid-state microwave induction module includes a solid-state microwave generator, a solid-state microwave absorber, and a solid-state microwave power monitor; The solid-state microwave generator is used for generating a solid-state microwave signal, and the generated solid-state microwave power and coverage range are adjustable and controllable; The solid-state microwave absorber is used for recovering and detecting the energy not absorbed by the raw ore and is located below the conveyor belt; The solid-state microwave power monitor is used for real-time monitoring of the microwave power of the solid-state microwave generator; The computer processing system is signal-connected to the raw ore grading system, the belt conveyor system, the solid-state microwave induction module, the infrared imaging system, and the high-definition camera system, and the computer processing system is configured to: Based on a preset solid-state microwave radiation time, control the running speed of the belt conveyor system; Control the solid-state microwave generating power of each solid-state microwave induction module, and calculate the corresponding solid-state microwave absorbed energy and loss energy; Based on the solid-state microwave absorbed energy, and according to the differences in the dynamic response data of the raw ore under solid-state microwave irradiation collected by the infrared imaging system, identify ores and waste rocks. The dynamic response data under solid-state microwave irradiation includes one or a combination of average gray level, variance, second-order moment energy, contrast, entropy value, and autocorrelation characteristic parameters; Obtain the image data of the raw ore collected by the high-definition camera system when it is transported on the conveyor belt to monitor the abnormal conditions of the raw ore after microwave irradiation; when it is found that the shape of the raw ore has changed under the action of a certain solid-state microwave generating power, adjust the solid-state microwave generating power to enable the normal operation of the identification of the raw ore; The raw ore grading system is inclined upward. The raw ore grading system includes a driving motor, a raw ore bin, a transmission shaft, a spiral sieve barrel, a spiral roller, a grading screen, a grading aggregate bin, and a powder bin. The driving motor controls the spiral roller through the transmission shaft, and the transmission shaft is fixedly connected to the spiral roller. The spiral roller is located inside the spiral sieve barrel. The raw ore bin is open-connected to the spiral sieve barrel, and the ore in the raw ore bin enters the spiral sieve barrel under its own weight. The lower part of the spiral sieve barrel is equipped with a detachable grading screen with several grades, and the powder bin and the grading aggregate bin are correspondingly arranged below. The driving motor is signal-connected to the computer processing system.

2. The intelligent recognition device for hierarchical microwave-induced ore phase characteristics according to claim 1, characterized in that The transmission shaft passes through the spiral sieve barrel and is connected to it through a moving ring plate.

3. The intelligent recognition device for hierarchical microwave-induced ore phase characteristics according to claim 1, wherein The belt conveyor system includes a conveyor belt, belt driving wheels, and at least one ore partition. The belt driving wheels are located at both ends of the conveyor belt, the conveyor belt rotates around the driving wheels, and at least one ore partition is arranged above the conveyor belt.

4. The intelligent identification device for the phase characteristics of ore by hierarchical microwave induction according to claim 3, characterized in that, The conveyor belt and the ore partition are both made of microwave inert materials and do not absorb microwave energy.

5. The intelligent recognition device for hierarchical microwave-induced ore phase characteristics according to claim 3, characterized in that, The upper surface of the conveyor belt is distributed with anti-slip patterns to prevent the ores from sliding.

6. The hierarchical microwave-induced intelligent identification device for ore phase characteristics according to claim 5, characterized in that, A plurality of the ore partitions are provided, and the distance between every two ore partitions is adjustable.

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