Full
Outline
In order to explore methods to accelerate the flocculation settling of fine tailings, ultrasonic technology was introduced during the flocculation settling of tailings. Non-contact sound fields and perturbation actions were applied to the tailings slurry medium to conduct tests on flocculation settling of fine tailings based on ultrasonic guidance. By analyzing the variation of height of solid-liquid of tailings slurry under the action of 28 kHz and 100 W ultrasonic transducers at different settling times, combined with the simulation of the internal flow field of the sand silo, the mechanism of flocculation settling of tailings slurry under ultrasonic guidance was revealed. The results show that compared with natural flocculation settling, ultrasound can significantly increase the settling height of the solid-liquid surface of tailings slurry, and small flocs tend to move upward at the solid-liquid interface and form large flocs in the upper water layer, providing an excessive flocculation environment for flocculation settling of subsequent tailings slurry. Ultrasonic guidance is not only beneficial for the flocculation settling efficiency in current environment, but also has potential advantages for continuous flocculation settling.
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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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