Effect of Modified Polyacrylamide on High Intensity Magnetic Separation of Hematite

被引：0
|
作者：
Li W.-B. [1 ,2 ]
Zhou L.-B. [1 ]
Han Y.-X. [1 ]
Xu H.-Q. [1 ]
机构：
[1] School of Resources & Civil Engineering, Northeastern University, Shenyang
[2] State Key Laboratory of Mineral Processing, Beijing
来源：
Dongbei Daxue Xuebao/Journal of Northeastern University | 2019年 / 40卷 / 07期
关键词：
Flocculation; Hematite; High intensity magnetic separation; Polyacrylamide; Quartz;
D O I：
10.12068/j.issn.1005-3026.2019.07.017
中图分类号：
学科分类号：
摘要：
Based on the theory of flocculation-separation process, effects of modified polyacrylamide(HPM)dosage, pulp pH and stirring speed on high intensity magnetic separation of fine hematite ore were investigated by modified polyacrylamide(HPM) selective agglomeration pulp preparation-wet high intensity magnetic separation process. Scanning electron microscopy, EDS spectroscopy, Zeta potential and infrared spectrum measurements were used to study the micro-morphology of aggregates before and after magnetic separation and the change of surface properties of minerals after the action of reagents. The magnetic separation experimental results showed that, compared with the conventional high intensity magnetic separation, using selective agglomeration-high intensity magnetic separation process, the concentrate recovery of the presence of HPM in magnetic separation increases by 5.39% on condition that HPM dosage is 10 g/t, pulp pH value is 10 and stirring speed is 954 r/min. The apparent particle size of mineral particles in raw ore increases significantly after adding HPM and the recovery of fine hematite can be enhanced by high intensity magnetic separation with the presence of HPM. HPM can selectively flocculate hematite, and there are electrostatic adsorption and hydrogen bond adsorption on the surface of hematite, but there is no adsorption on the surface of quartz. © 2019, Editorial Department of Journal of Northeastern University. All right reserved.
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页码：1002 / 1008
页数：6
相关论文
共 10 条
  • [1] Niu F.-S., Zhang J.-X., Bai L.-M., Et al., Research status and progress on flocculation separation technology of ultrafine iron mineral, Metal Mine, 12, pp. 85-89, (2014)
  • [2] Ahmad H., Behzad V.H., Sabri K., Effect of bubble size and velocity on collision efficiency in chalcopyrite flotation, Colloids and Surfaces A: Physicochemical and Engineering Aspects, 498, 5, pp. 258-267, (2016)
  • [3] Zhang J.-X., Niu F.-S., Chen M., Study on size characteristics and behaviors and mechanism of dispersion of fine oolitic hematite and quartz particle, China Mining Magazine, 23, 5, pp. 120-125, (2015)
  • [4] Li W.B., Zhou L.B., Han Y.X., Et al., Effect of carboxymethyl starch on fine-grained hematite recovery by high-intensity magnetic separation: experimental investigation and theoretical analysis, Powder Technology, 343, 2, pp. 270-278, (2019)
  • [5] Schubert H., On the optimization of hydrodynamics in fine particle flotation, Mineral Engineering, 21, 12-14, pp. 930-936, (2008)
  • [6] Yin W.Z., Yang X., Zhou D., Et al., Shear hydrophobic flocculation and flotation of ultrafine Anshan hematite using sodium oleate, Transtactions of Nonferrous Metals Society of China, 21, 3, pp. 652-664, (2011)
  • [7] Weir S., Moody G.M., The importance of flocculant choice with consideration to mixing energy to achieve efficient solid/liquid separation, Mineral Engineering, 16, 2, pp. 109-113, (2003)
  • [8] Grabsch A.F., Fawell P.D., The impact of achieving a higher aggregate density on polymer-bridging flocculation, International Journal of Mineral Processing, 124, 12, pp. 83-94, (2013)
  • [9] Bhagyalaxmi K., Hrushikesh S., Swagat S., Investigations on different starches as depressants for iron ore flotation, Mineral Engineering, 49, 8, pp. 1-6, (2013)
  • [10] Yan H.J., Zhang B.S., In vitro cytotoxicity of monodispersed hematite nanoparticles on Hek 293 cells, Materials Letters, 65, 5, pp. 815-817, (2011)
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