Full
Outline
To improve the inhibition performance of causticized starch and the recovery rate of iron concentrate in the process of reverse flotation desilication of iron ore, the Box-Behnken design of response surface methodology was adopted to systematically investigate the effects of three factors of causticizing time, causticizing temperature and causticizing ratio, as well as their interaction on the recovery rate of iron concentrate. The results show that causticizing temperature exerts the most significant impact on the recovery rate, with the order of significance of influence being: causticizing temperature >causticizing time >causticizing ratio. Among them, the interaction between causticizing temperature and causticizing ratio also has a significant effect. The optimal preparation conditions obtained through optimization are as follows: causticizing temperature of 95 ℃, causticizing time of 80 min, and causticizing ratio of 0.07. Under these conditions, the recovery rate of iron concentrate reaches 63.65%, which is 1.3% higher than that under the initial conditions. Infrared spectroscopy analysis results show that after optimization of preparation conditions, the intensity of O—H, C＝O, C—OH and C—O—C characteristic peaks of causticized starch is significantly enhanced, indicating that the intramolecular hydrogen bond network is more stable, the structure is more orderly, and the inhibition performance is significantly improved. The research results verify the effectiveness and reliability of the response surface methodology in the optimization of flotation reagents, and provide a theoretical basis and technical support for the industrial application of causticized starch.
28
9
| 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
