Full
Outline
In order to explore the effect of particle-particle interaction on slurry rheology under different electrolyte solutions, quartz and calcite were used as research objects. The effects of Ca2+/Mg2+ concentration on the apparent viscosity and yield stress of single quartz/calcite slurry and mixed slurry were studied by rotational rheometer. Combined with Zeta potential, DLVO theory calculation and suspension turbidity test, the surface electrical properties, particle interaction and coagulation behavior of mineral particles under different Ca2+/Mg2+ concentrations were revealed, and the theoretical relationship between particle microscopic action and slurry rheology was established. The results show that the increase of Ca2+/Mg2+ concentration can reduce the thickness of the electric double layer on the particle surface, enhance the attraction between the particles, promote the in-phase condensation of the particles, and result in the increase of the apparent viscosity and yield stress of the single quartz and calcite slurry, and reduce the turbidity of suspension. The increase of Ca2+/Mg2+ concentration can weaken the attraction between quartz and calcite, weaken the heterogeneous condensation between them, lead to the decrease of apparent viscosity and yield stress of mixed slurry, and increase the turbidity of suspension. The yield stress of quartz + calcite mixed slurry has a logarithmic relationship with the Debye length of the solution, and has a positive correlation with the square of the surface potential difference between the two different particles.
78
30
| 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 |
关闭全屏
No. 86 Xueyuan South Road, Haidian District, Beijing
010-62662699(Operation and Technical Support)
qkjq@cast.org.cn
Copyright © 2025 China Association for Science and Technology. All rights reserved. For all open access content, the relevant licensing terms apply.
Sponsored by the Office of the Leading Group for Cybersecurity and Informatization of CAST, and supported by Science and Technology Review Publishing House
