Different Slurry Concentration on Settling Effect of the Iron Tailings

Abstract:

We used the iron tailings with different concentrations of raw slurry and the classifier overflow after desliming for natural sedimentation and adding flocculants flocculating sedimentation test research. The results show that: the settling velocity is slower during the natural sedimentation, The effect that concentration on the settling velocity of material is larger, with the increase of concentration, particle settling velocity drop, When the concentration reached 20%, material group is in a state of suspension, particle is essentially not settlement; Adding polyacrylamide flocculant for the pulp material pretreatment, the settling velocity is obviously improved than natural sedimentation, Supernatant turbidity also decreased significantly, but the pulp concentration still has a great influence on the sedimentation rate, the higher the concentration of the settlement, the slower settling velocity. The test result is according to the theoretical formula of settlement.

• Periodical: Advanced Materials Research (Volumes 634-638)
• Pages: 3325-3330
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.634-638.3325
• Online since: January 2013
• Authors: Zhi Xin Shi, Xing Long Zhou, Wen Bin Luo, Zheng Qiang Liu, Dong Yang Sun, Xiao Ming Zhang
• Keywords: Concentration, Flocculation Sedimentation, Iron Ore Tailings, Natural Sedimentation

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