Full
Outline
To enhance the separation efficiency and accuracy of medium and low-grade uranium ores, we developed a gamma array beneficiation detection system based on 64 NaI detectors and established a reliable consistency correction method. This system adopts an 8-column × 8-row array layout, integrating a digital single-channel pulse amplitude analyzer, an FPGA data processing module and an STM32 control module, which can achieve synchronous acquisition and real-time processing of gamma-ray signals from uranium ore conveyed by belts. To address the problem of count rate deviation caused by multi-detector process differences, a mathematical model for count rate consistency analysis was constructed, and one-way analysis of variance was used for consistency evaluation. The test results show that before calibration, the F value among the detector groups reached 3 654.41, and the P value was 0, significantly deviating from the consistency standard. Then, the t-test method was adopted to locate the abnormal detectors. After calibrating the abnormal detectors, the F value dropped to 0.64, P=0.98>0.05, and there was no significant difference in the counting rates of each detector. This system effectively enhances the accuracy and stability of signal acquisition, providing efficient technical support for the pre-beneficiation of low-grade uranium ore before grinding. It has significant engineering value for expanding the utilization boundaries of mineral resources and reducing subsequent processing costs.
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| 科 Family | 属数 Number of genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) | 属 Genus | 种数 Number of species | 占总种数比例 Percentage of total species (%) |
|---|---|---|---|---|---|---|
| 鹅膏菌科Amanitaceae | 2 | 11 | 5.26 | 鹅膏菌属 Amanita | 10 | 4.78 |
| 小菇科 Mycenaceae | 2 | 12 | 5.74 | 丝盖伞属 Inocybe | 5 | 2.39 |
| 多孔菌科 Polyporaceae | 8 | 14 | 6.70 | 蜡蘑属 Laccaria | 5 | 2.39 |
| 红菇科 Russulaceae | 3 | 23 | 11.00 | 小皮伞属 Marasmius | 6 | 2.87 |
| 小菇属 Mycena | 11 | 5.26 | ||||
| 光柄菇属 Pluteus | 5 | 2.39 | ||||
| 红菇属 Russula | 17 | 8.13 | ||||
| 栓菌属 Trametes | 5 | 2.39 |
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