Shear-Dependent Yield Stress of Iron Ore Fine Tailings in Two-Step Flocculation Process
المؤلفون المشاركون
Wu, Aixiang
Yang, Ying
Wang, Hongjiang
Klein, Bern
المصدر
Advances in Materials Science and Engineering
العدد
المجلد 2020، العدد 2020 (31 ديسمبر/كانون الأول 2020)، ص ص. 1-12، 12ص.
الناشر
Hindawi Publishing Corporation
تاريخ النشر
2020-11-18
دولة النشر
مصر
عدد الصفحات
12
الملخص EN
Both shear and flocculation have a significant influence on the rheological behavior of tailings, especially the yield stress.
In the two-step flocculation process, the above two kinds of actions exist at the same time, and they influence each other.
In order to explore the change rule of the yield stress and its internal causes, a two-step flocculation process of the iron ore fine tailings with different shear conditions in the four different phases was designed.
In the primary flocculation phase, tailing particles combined with the primary flocculant and formed a primary floc network structure.
In the primary broken phase, shear destroyed the primary floc network structure and decreased the average floc size, so the shear-dependent yield stress, the floc strength factor, and the fractal dimension decreased.
In the secondary flocculation phase, broken floc combined with the secondary flocculant and produced a more compact floc network structure which had a better shear resistance.
Therefore, in the secondary broken phase, with the increase of shear, the decrease of yield stress, the floc strength factor, and fractal dimension were less obvious than that in the primary broken phase.
In both two broken phases, the yield stress of the secondary flocculating slurry was always higher than that of the primary flocculating slurry, but with the increase of shear, the difference became smaller.
The floc strength and fractal dimension also showed the same rule.
The internal reasons for the stronger shear resistance of the secondary flocculating slurry were the increase of the number of binding sites, the electric neutralization between the two flocculants, and the steric hindrance effect of the flocculants.
نمط استشهاد جمعية علماء النفس الأمريكية (APA)
Yang, Ying& Wang, Hongjiang& Klein, Bern& Wu, Aixiang. 2020. Shear-Dependent Yield Stress of Iron Ore Fine Tailings in Two-Step Flocculation Process. Advances in Materials Science and Engineering،Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1128863
نمط استشهاد الجمعية الأمريكية للغات الحديثة (MLA)
Yang, Ying…[et al.]. Shear-Dependent Yield Stress of Iron Ore Fine Tailings in Two-Step Flocculation Process. Advances in Materials Science and Engineering No. 2020 (2020), pp.1-12.
https://search.emarefa.net/detail/BIM-1128863
نمط استشهاد الجمعية الطبية الأمريكية (AMA)
Yang, Ying& Wang, Hongjiang& Klein, Bern& Wu, Aixiang. Shear-Dependent Yield Stress of Iron Ore Fine Tailings in Two-Step Flocculation Process. Advances in Materials Science and Engineering. 2020. Vol. 2020, no. 2020, pp.1-12.
https://search.emarefa.net/detail/BIM-1128863
نوع البيانات
مقالات
لغة النص
الإنجليزية
الملاحظات
Includes bibliographical references
رقم السجل
BIM-1128863
قاعدة معامل التأثير والاستشهادات المرجعية العربي "ارسيف Arcif"
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