Full
Outline
In order to explore the effect mechanism of magnetization treatment on the reverse flotation behavior of hematite in dodecylamine-cassava starch system, water, starch, dodecylamine and pulp were magnetized respectively, and the mechanism of magnetization treatment in reverse flotation of hematite was analyzed by detecting the changes of reagent adsorption capacity, contact angle and Zeta potential under different magnetization methods. The results show that under the conditions of pH=9, starch dosage of 800 g/t, dodecylamine concentration of 20 mg/L and flotation machine speed of 2 100 r/min, the flotation recovery rate of hematite can be increased by 2.78, 4.16 and 3.84 percentage points respectively by magnetized water, magnetized starch and magnetized pulp. Magnetized water, magnetized starch and magnetized pulp can increase the capacity of starch adsorbed on the surface of hematite particles and reduce the contact angle of the solution on its surface. At the same time, magnetized water and magnetized starch also make the Zeta potential of hematite particles shift positively, while magnetized dodecylamine makes the Zeta potential shift negatively. Magnetized water and magnetized starch promote the adsorption of starch on the surface of hematite. Magnetized dodecylamine inhibits the adsorption of starch on the surface of hematite. Magnetized pulp promotes the hydrolysis of hematite surface, so that more starch can be adsorbed on the surface of hematite particles, thus improving the recovery rate of hematite.
65
34
| 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
