Show simple item record

Ясинский, А. С.
Поляков, П. В.
Yan V. Voyshel
Гильманшина, Т. Р.
Sai, Krishna Padamata
2019-07-01T07:30:23Z
2019-07-01T07:30:23Z
2018-01
Ясинский, А. С. Sedimentation behavior of high-temperature concen-trated colloidal suspension based on potassium cryolite [Текст] / А. С. Ясинский, П. В. Поляков, Yan V. Voyshel, Т. Р. Гильманшина, Krishna Padamata Sai // Journal of Dispersion Science and Technology. — 2018.
01932691
https://www.tandfonline.com/eprint/7zWt25FdyDniP9eQuRDF/full
https://elib.sfu-kras.ru/handle/2311/111553
Текст статьи не публикуется в открытом доступе в соответствии с политикой журнала.
The paper describes the sedimentation behavior of concentrated high-temperature oxide-fluoride slurries with alumina particles volume fraction range 0.24 ≤ φ ≤ 0.32 at ∼700 °C. The behavior is of interest due to perspectives of the non-Newtonian fluids usage in the future aluminium reduction technology. To characterize sedimentation behavior several techniques were used: density analysis, X-Ray diffraction, microphotography and electron scanning microscopy. Sample with −63 µm dispersed phase as well as smelter-grade alumina which contains particles in a range of 10–150 µm has been examined. It has been found that particle settling occurs with the initial velocity 0.97·10−5 m·s−1 at φ = 0.24 and gradually reduces reaching zero at φ close to 0.32 which was considered as a maximum packing fraction. MS−1 sedimentation mode has been identified, the type of sedimentation was found to be changed from type 1 to type 3 in the sample with φ = 0.24. The alumina partial density distribution in suspension as a function of time was determined. Alumina average motion velocity during sedimentation was calculated to be 154·10−3 kg·m−2·s−1 at φ = 0.24 in the top layer of the sample within the first 150 s of sedimentation. It had been reducing drastically before it reached zero after 300 s. An alumina flow was higher in the top layers. Some of the rheological properties (such as relaxation time, which increased from 7.2·10−3 to 17.7·10−3 s after the increase of φ from 0.24 to 0.28) has been determined.
Sedimentation behavior of high-temperature concen-trated colloidal suspension based on potassium cryolite
Journal Article
Published Journal Article
53.03.05
2019-07-01T07:30:23Z
10.1080/01932691.2017.1421077
Институт цветных металлов и материаловедения
Кафедра металлургии цветных металлов
Кафедра инженерного бакалавриата CDIO
Journal of Dispersion Science and Technology
Q2
Q3


Files in this item

Thumbnail

This item appears in the following Collection(s)

Show simple item record


DSpace software copyright © 2002-2015  DuraSpace
Theme by 
@mire NV