Uranium ore grade sorting device

Abstract

The uranium ore grade sorting device comprises driving rollers, a conveying belt, an array detection system, an air compressor and an adjustable air injection valve, the conveying belt is supported by the two driving rollers, the adjustable air injection valve is arranged at the discharging end of the conveying belt and connected with the air compressor, and the array detection system is arranged at the bottom of the conveying belt; the array detection system consists of a plurality of detectors arranged in an array, a digital pulse multichannel spectrum analyzer and a high-voltage supply module; the device can solve the problem that the influence of counting rate change of uranium ore samples on prediction accuracy caused by grade classification is large, decomposition of gamma radiation fields generated by a plurality of uranium ore samples is realized, the uranium ore samples can be quantified and classified quickly and effectively, the influence of synchronous measurement of a plurality of ore samples on classification is overcome, and the quality of the uranium ore samples is improved. The classification speed is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of uranium ore element separation, in particular to a device for separating uranium ore grades. Background Technique

[0002] Uranium ore resources are characterized by uneven mineralization, a majority of medium and low-grade ores, and a high content of waste rock. The rising dilution rate of mined ore and the decline of the original ore grade are the main problems faced in uranium mining. Using pre-separation technology to process the original ore can simplify the subsequent hydrometallurgical process to achieve the purpose of reducing costs and making full use of resources. Ore separation technology uses the differences in physical characteristics such as optical properties, electrical properties, magnetic properties, radioactivity, and radiation characteristics between ore and waste rock in the original ore to achieve separation.

[0003] The existing uranium ore separation methods are mostly radioactive separation. However, traditional radioactive separation is aimed at single massive uranium ores, and by increasing the system's radiation shielding ability and the spacing between the ores to be separated, the mutual influence between different ores when measuring the gamma ray intensity is avoided. This method has the disadvantages of complex operation, slow separation speed, and small processing capacity. Summary of the Invention

[0004] In view of the deficiencies of the prior art, the utility model provides a device for separating uranium ore grades, aiming to solve the problems mentioned in the background technique.

[0005] To achieve the above purpose, the utility model provides the following technical solution: A device for separating uranium ore grades includes a driving roller, a conveyor belt, an array detection system, an air compressor, and an adjustable jet valve. The conveyor belt is supported by two driving rollers. An adjustable jet valve is arranged at the discharging end of the conveyor belt. The adjustable jet valve is connected to the air compressor. An array detection system is arranged at the bottom of the conveyor belt.

[0006] Further, it also includes a computer, which is connected to the array detection system, the air compressor, and the adjustable jet valve.

[0007] Further, the array detection system consists of a plurality of detectors arranged in an array, a digital pulse multi-channel spectrum analyzer, and a high-voltage supply module.

[0008] Further, the array detection system uses an energy spectrum counting rate in the range of [0.4 MeV, 2.5 MeV].

[0009] Further, a uranium ore receiving bucket (11) and a waste rock receiving bucket for receiving materials are arranged at the falling position of the uranium ore at the discharging end of the conveyor belt.

[0010] Further, it also includes a dust collector and a dust removal pipe. The dust removal pipe is connected to the dust collector, and the dust removal end of the dust removal pipe is arranged at the top of the conveyor belt.

[0011] Further, it further includes a screening machine, and the screening machine is arranged at the feeding end of the conveyor belt.

[0012] Compared with the existing technology, the utility model has the following beneficial effects:

[0013] (1) The utility model can solve the problem that the change of the counting rate of uranium ore samples has a great influence on the prediction accuracy caused by grade classification, realize the decomposition of the γ radiation field generated by multiple uranium ore samples, and can quickly and effectively quantify and classify uranium ore samples, overcome the influence on classification during synchronous measurement of multiple ore samples, and improve the classification speed.

[0014] (2) The utility model adopts an array detection system composed of multiple detectors arranged in an array, a digital pulse multi-channel spectrum analyzer and a high-voltage supply module. Compared with the structure of a single detector + lead shield used in traditional radioactive ore dressing equipment, it is not necessary to increase the spacing of the ores to reduce the mutual influence. The measurement method changes from one detector for one ore to multiple detectors for multiple ores, improving the sorting efficiency of uranium ore. Description of the Drawings

[0015] Figure 1 It is a schematic diagram of the overall structure of the utility model.

[0016] Figure 2 It is a schematic diagram of the installation position of the adjustable jet valve of the utility model.

[0017] Figure 3 It is a schematic diagram of the side structure of the utility model.

[0018] In the figure, 1, driving roller; 2, conveyor belt; 3, array detection system; 4, air compressor; 5, dust collector; 6, dust removal pipeline; 7, screening machine; 8, motor; 9, computer; 10, adjustable jet valve; 11, uranium ore receiving bucket; 12, waste rock receiving bucket. Specific Embodiments

[0019] As Figures 1-3As shown in the figure, the present utility model provides a technical solution: a uranium ore grade sorting device, which includes a driving roller 1, a conveyor belt 2, an array detection system 3, an air compressor 4, and an adjustable jet valve 10; the conveyor belt 2 is supported by two driving rollers 1, an adjustable jet valve 10 is arranged at the discharging end of the conveyor belt 2, the adjustable jet valve 10 is connected to the air compressor 4, and an array detection system 3 is arranged at the bottom of the conveyor belt 2; it also includes a computer 9, and the computer 9 is connected to the array detection system 3, the air compressor 4, and the adjustable jet valve 10; the computer 9 calculates the grade of uranium ore according to the γ radiation field intensity of the uranium ore on the conveyor belt 2 detected by the array detection system 3, adjusts the compressed air pressure of the air compressor 4 according to the calculated grade of uranium ore, and controls the adjustable jet valve 10 to spray compressed air, so that the uranium ore meeting the grade requirements falls into the uranium ore receiving bucket 11, and the uranium ore not meeting the grade requirements falls into the waste rock receiving bucket 12; the present utility model can solve the problem that the change in the counting rate of uranium ore samples has a great influence on the prediction accuracy of grade classification, realize the decomposition of the γ radiation field generated by multiple uranium ore samples, can quickly and effectively quantify and classify uranium ore samples, overcome the influence on classification during synchronous measurement of multiple ore samples, and improve the classification speed.

[0020] Among them, the array detection system 3 adopts an energy spectrum counting rate in the range of [0.4 MeV, 2.5 MeV].

[0021] Among them, the array detection system 3 is composed of a plurality of detectors arranged in an array, a digital pulse multi-channel analyzer, and a high-voltage supply module;

[0022] By adopting the array detection system 3 composed of a plurality of detectors arranged in an array, a digital pulse multi-channel analyzer, and a high-voltage supply module, compared with the structure of a single detector + lead shield used in traditional radioactive ore dressing equipment, there is no need to increase the spacing between ores to reduce mutual influence, and the measurement method changes from one detector for one ore to multiple detectors for multiple ores, improving the ore sorting efficiency.

[0023] Among them, the digital pulse multi-channel analyzer includes a preamplifier, a high-speed analog-to-digital converter, and a field programmable gate array (FPGA) connected in sequence;

[0024] In the traditional analog multi-channel spectrometer system, due to the large number of analog devices such as resistors, capacitors, and operational amplifiers in the circuit, it is easily affected by temperature changes, resulting in a large temperature drift, which increases the difficulty of subsequent spectral analysis. The array detection system 3 adopts a digital pulse multi-channel analyzer, which can realize functions such as peak extraction, pile-up pulse identification and separation, and spectral line generation;

[0025] The working principle of the digital pulse multi-channel analyzer is that the nuclear pulse signal is input, and the corresponding energy spectrum is obtained through the preamplifier, high-speed analog-to-digital converter, and field programmable gate array (FPGA).

[0026] Among them, the uranium ore receiving bucket 11 and the waste rock receiving bucket 12 for receiving materials are arranged at the falling position of the uranium ore at the discharging end of the conveyor belt 2.

[0027] Among them, a dust collector 5 and a dust removal pipeline 6 are further included. The dust removal pipeline 6 is connected to the dust collector 5, and the dust removal end of the dust removal pipeline 6 is arranged at the top of the conveyor belt 2; through the dust collector 5 and the dust removal pipeline 6, the uranium ore on the conveyor belt 2 can be dust-removed to improve the quality of the uranium ore.

[0028] Among them, a screening machine 7 is further included. The screening machine 7 is arranged at the feeding end of the conveyor belt 2 and is used for inputting the screened uranium ore into the conveyor belt 2 for grade separation.

[0029] Among them, a motor 8 is further included. The motor 8 is in driving connection with the driving roller 1 and is used for providing power for the driving roller 1.

[0030] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A uranium ore grade sorting device, comprising a driving roller (1), a conveyor belt (2), an array detection system (3), an air compressor (4) and an adjustable jet valve (10), characterized in that: The conveyor belt (2) is supported by two transmission rollers (1). An adjustable jet valve (10) is provided at the discharging end of the conveyor belt (2). The adjustable jet valve (10) is connected to an air compressor (4). An array detection system (3) is provided at the bottom of the conveyor belt (2). The array detection system (3) is composed of a plurality of detectors arranged in an array, a digital pulse multi-channel spectrum analyzer, and a high-voltage supply module.

2. The uranium ore grade sorting device according to claim 1, characterized in that: It further includes a computer (9). The computer (9) is connected to the array detection system (3), the air compressor (4), and the adjustable jet valve (10).

3. The uranium ore grade sorting device according to claim 1, characterized in that: The array detection system (3) uses a spectral counting rate with an energy range of [0.4 MeV, 2.5 MeV].

4. A uranium ore grade sorting device according to claim 1, characterized in that: A uranium ore receiving bucket (11) and a waste rock receiving bucket (12) for receiving materials are arranged at the falling position of the uranium ore at the discharging end of the conveyor belt (2).

5. The uranium ore grade sorting device according to claim 1, characterized in that: It further includes a dust collector (5) and a dust removal pipe (6). The dust removal pipe (6) is connected to the dust collector (5), and the dust removal end of the dust removal pipe (6) is arranged at the top of the conveyor belt (2).

6. The uranium ore grade sorting device according to claim 1, characterized in that: It further includes a screening machine (7). The screening machine (7) is arranged at the feeding end of the conveyor belt (2).

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