| Issue |
E3S Web Conf.
Volume 192, 2020
VIII International Scientific Conference “Problems of Complex Development of Georesources” (PCDG 2020)
|
|
|---|---|---|
| Article Number | 02007 | |
| Number of page(s) | 6 | |
| Section | Problems of Complex Processing of Mineral Raw Materials and New Technologies of Mineral Processing | |
| DOI | https://doi.org/10.1051/e3sconf/202019202007 | |
| Published online | 30 September 2020 | |
Hydrophobization of the surface of mineral forms during cryogenic treatment of highly clayey sands
Chersky Mining Institute of the North, Siberian Branch, Russian Academy of Sciences, laboratory “Concentration of Mineral Wealth”, 678980, Republic of Sakha (Yakutia), Yakutsk, Lenin str. 43.
* Corresponding author: shirman@inbox.ru
The results of experiments in a laboratory flotation device for assessing the effect of cryogenic treatment on the surface properties of natural highly dispersed mineral mixtures, such are high-clay sands, are presented. Experiments have shown that cryogenic treatment of sands significantly increases their hydrophobic properties, which is confirmed by an increase in the yield of the flotation foam product without using collecting reagents, and there is also an increase in the yield of the foam product depending on the number of freeze-thaw cycles. This phenomenon confirms the effect of increased disintegration of highly clayey sands in an air-water environment after cryogenic treatment. An X-ray phase analysis of samples of foam (hydrophobic) and chamber (hydrophilic) products of flotation studies was carried out on an X-ray diffractometer D8 DISCOVER. Analyzes have shown that the separation products contain the same mineral phases, slightly differing in quantity, judging by the intensity of the peaks.
Key words: highly clayey sands / washing / cryogenic treatment / freezing / hydrophobicity / reagents / foam product
© The Authors, published by EDP Sciences, 2020
This is an Open Access article distributed under the terms of the Creative Commons Attribution License 4.0, which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited.
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