Experiment and Simulation on Coarse Slime Recovery by Water Medium Fluidized Separator

Abstract:

A laboratory water medium fluidized separator (WMFS), which is 0.06 m in diameter and 1.5 m high, was designed based on fluidization technique and the principle of hindered settling in hydrodynamics. Then the separation principle of WMFS and the construction of the separation system were introduced. The coarse slime as feed is fluidized by upstream, and is separated according to the different settling velocities (terminal velocities) of the coarse slime in WMFS. The water flow pattern in WMFS was simulated by using CFD software, and the data were analyzed in theory. Finally, the experiment results show that the fluidization technology can be efficiently used in beneficiating coarse slime of -1mm+0.25mm with an Ep value of 0.074.

• Periodical: Advanced Materials Research (Volumes 383-390)
• Pages: 6490-6495
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.383-390.6490
• Online since: November 2011
• Authors: Zhi Hai Tan, Ya Qun He, Yi Bo Lv, De Qiang Peng, Ren Chao Wu, Guo Ping Zhou, Wei Ning Xie
• Keywords: Coarse Slime, Ep Value, Simulated, Water Medium Fluidized Separator

References

[1] Wills, B.A., Mineral Processing Technology, 7th edn., Elsevier Science & Technology Books, 2006, pp.8-11.

[2] Wang Jianjun, Jiao Hongguang, Chen Lunjian, Development and application of teetered bed coal separation technology, coal preparation technology, June 2007, pp.70-72. (In China).

[3] Liu Kuijing, Development and application of the liquid - solid fluidized bed separation fine coal, China Coal, vol. 34, Sep. 2008, pp.83-84 ( In China).

[4] Steiner, H.J., A contribution to the theory of jigging, part-I; similarity criteria of the motion of jig layers, Minerals Engineering, vol. 9, June 1996, pp.675-686.

DOI: 10.1016/0892-6875(96)00055-6

[5] Epstein Norman, Teetering, Powder Technol. vol. 151, Mar. 2004, pp.2-14.

[6] Mishra, B.K., Mehrotra, S.P., A jig model based on the discrete element method and its experimental validation, International Journal of Mineral Processing, vol. 63, Dec. 2001, pp.177-189.

DOI: 10.1016/s0301-7516(01)00053-9

[7] Galvin, K.P., Pratten, S.J., Lambert, N., Callen, A.M., Lui, J., Influence of a jigging action on the gravity separation achieved in a teetered bed separator, Minerals Engineering, vol. 15, Dec. 2002, pp.1199-1202.

DOI: 10.1016/s0892-6875(02)00211-x

[8] Asif, M, The complete segregation model for liquid fluidized bed: formulation and related issues, Powder Technology. vol. 140, Feb. 2004, pp.21-29.

DOI: 10.1016/j.powtec.2003.11.011

[9] Rasul, M G, Rudolph, V and Carsky, M, Segregation in binary and ternary liquid fluidized beds, Powder Technology. vol. 126, July 2002, pp.116-128.

DOI: 10.1016/s0032-5910(02)00049-9

[10] Das, S. P. Mehrotra, A comparehensive analysis of separation in floatex density separator, The XXIV International Mineral Processing Congress (Beijing, China), Sep. 2008, pp.754-763.

[11] Yang, J., Renken, A., A generalized correlation for equilibrium of forces in liquid–solid fluidized beds, Chemical Engineering Journal, vol. 92, 15 Apr. 2003, pp.7-14.

DOI: 10.1016/s1385-8947(02)00084-0

[12] Richardson, J.F., Zaki, W.N., Sedimentation and fluidization (Part I). Trans. Inst, Chemical Engineering Journal, Vol. 32, 1954, pp.35-52.

[13] Rasul, M.G., Rudolph, V., Wang, F.Y., Particles separation using fluidization techniques, International Journal of Mineral Processing, vol. 60, Dec. 2000, pp.163-179.

DOI: 10.1016/s0301-7516(00)00016-8

[14] Mukherjee, A.K., et al., Application of liquid/solid fluidization technique in beneficiation of fines, International Journal of Mineral Processing, vol. 92, July 2009, pp.67-73.

DOI: 10.1016/j.minpro.2009.02.011