Effect of Bias Flow on Flotation Efficiency in a Packed Column

Abstract:

Bias flow is an important parameter in a flotation process of packed column. An experiment related to P₂O₅ recovery of phosphate rock was designed to study the effect of bias flow on the flotation separation efficiency by a direct-reverse flotation circuit of packed flotation column. The results have showed that the recovery of P₂O₅ is high during the combination of the direct-reverse flotation circuit. The grade and yield of P₂O₅ can reach to 32.77% and 82.64% respectively, under the condition of the range of-0.005~0 cms^-1 of bias flow, 0.013~0.020 cms^-1 of the wash water flow rate in the direct flotation column, and the range of 0.006~0.009 cms^-1 of bias flow, 0.027~0.035 cms^-1 of wash water flow rate in the reverse column.

• Periodical: Advanced Materials Research (Volumes 781-784)
• Pages: 2797-2802
• DOI: https://doi.org/10.4028/www.scientific.net/AMR.781-784.2797
• Online since: September 2013
• Authors: Jun Ji, Yi Gang Ding, Lei Liu, Li Wei Wang, Yuan Xin Wu
• Keywords: Bias Flow, Direct-Reverse Flotation, Packed Flotation Column

References

[1] Dai F R. The application prospect of packed flotation column in China. Engineering Design and Research, 1998, (9): 5–9. (In Chinese).

[2] Zhang M, Liu J T. Packing in column flotation and its industrial application. Metal Mine, 2008, (7): 96–99. (In Chinese).

[3] Li Y F, Zhang M, Liu J T. Packing mode and its optimization of flotation column. Journal of China Coal Society, 2008, 33(4): 431–434. (In Chinese).

[4] Dobby G S, Finch J A. Mixing characteristics of industrial flotation columns. Chem. Eng. Sci., 1985, 40(7): 1061–1068.

DOI: 10.1016/0009-2509(85)85063-6

[5] Ralston J, Fornasiero D, Hayes R. Bubble–particle attachment and detachment in flotation. International Journal of Mineral Processing, 1999, 56 (1–4): 133–164.

DOI: 10.1016/s0301-7516(98)00046-5

[6] Yianatos J B, Bergh L G. RTD studies in an industrial flotation column：Use of the radioactive tracer technique. International Journal of Mineral Pressing, 1992, 36: 81-91.

DOI: 10.1016/0301-7516(92)90065-5

[7] Bergh L G, Yianatos J B. Control alternatives for flotation columns. Minerals Engineering, 1993, 6(6): 631-642.

DOI: 10.1016/0892-6875(93)90117-6

[8] Bergh L G, Yianatos J B. Experimental studies on flotation column dynamics. Minerals Engineering, 1994, (7): 345-355.

DOI: 10.1016/0892-6875(94)90075-2

[9] Sun C G, Yin F H, Afacan A, Nandakumar K, Chuang K T. Modelling and simulation of flow maldistribution in random packed columns with gas-liquid countercurrent flow . Chemical Engineering Research and Design, 2000, 78( 3): 378-388.

DOI: 10.1205/026387600527275

[10] Tao D, Luttrell G H, Yoon R H. A parametric study of froth stability and its effect on column flotation of fine particles. International Journal of Mineral Processing, 2000, 59(1): 25-43.

DOI: 10.1016/s0301-7516(99)00033-2

[11] Feng D, Aldrich C. Recovery of chromite fines from wastewater streams by column flotation. Hydrometallurgy, 2004, 72(3-4): 319-325.

DOI: 10.1016/s0304-386x(03)00186-5

[12] Eisele T C, Kawatra S K. Reverse column flotation of iron ore. Minerals &Metallurgical Processing, 2007, 24(2): 61-66.

DOI: 10.1007/bf03403360