Full
Outline
In order to achieve efficient and stable continuous preparation of filling slurry, the computational fluid dynamics numerical simulation method was used to compare and analyze the influences of traditional rigid paddle and flexible-guide composite paddles on the flow field structure, velocity distribution and mixing characteristics of multi-state materials during continuous stirring. The action mechanism of the flexible-guide composite paddles on the mixing uniformity, mixing time and energy consumption of the slurry was explored. The technical superiority of the flexible-guide composite paddles in the homogenization stirring of multi-state materials was verified by laboratory tests and industrial applications were carried out. The results show that the flexible-guide composite paddles significantly expand the turbulent kinetic energy distribution range of the slurry through elastic deformation and rigid-flexible coupling, form an axial flow-radial diffusion stirring flow field, and realize the wide-area dispersion of multi-state materials. Compared with the traditional rigid paddles, the particle dispersion efficiency under the flexible-guide composite paddles is increased by 51.8%. Under the equivalent mixing effect, the power of the flexible-guide composite paddles is reduced by 15.3%. Under the equivalent power, the stirring effect of the flexible-guide composite paddles is significantly better than that of the traditional rigid paddles. At present, the flexible-guide composite paddles has been successfully applied to mine production, and the slurry homogenization effect after stirring is excellent. The mass concentration of slurry is stable at 70%, and the fluctuation range is less than 1%. The research can provide a new method for the preparation of fine-grained slurry.
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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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