Energy feature of a multi-flow column flotation process
Gan Cheng 1  
,   Yuexian Yu 2,   Liqiang Ma 2,   Wencheng Xia 3,   Hongxiang Xu 2
More details
Hide details
College of Chemistry and Chemical, Henan Polytechnic University
School of Chemical and Environmental Engineering, China University of Mining and Technology
School of Chemical Engineering and Technology, China University of Mining and Technology
Gan Cheng   

Henan Polytechnic University, 2001 Century Avenue, 454003 Jiaozuo, China
Publication date: 2017-05-24
Physicochem. Probl. Miner. Process. 2017;53(2):1264–1284
A cyclonic-static micro-bubble flotation column (FCSMC) has been widely used in mineral separation. FCSMC includes countercurrent, cyclone and jet flow mineralization zones in a single column. In this study, the energy feature of the three different zones was compared. The turbulent flow was evaluated in terms of the turbulent kinetic energy (k) and the turbulent dissipation rate (ε). An appropriate computing model was determined by comparing the flow field value measured by PIV with the results of the Fluent numerical simulation. Jet flow separation exhibited the maximum k and ε values among the three columns, whereas counter-current separation displayed the minimum values. The high circulating volumetric flowrate means great energy input and turbulent intensity. The higher turbulent dissipation rate, the smaller the bubble is. The better performance of the FCSMC was mainly attributed to the multiple mineralization steps. The floatability of mineral particles gradually decreases with an increase in flotation time, the mineralization energy gradually increased to overcome the decrease in mineral floatability. By contrast, the countercurrent was beneficial for recovering the coarse particles, and the jet flow was beneficial for recovering the fine particles.
CHENG G., LIU J.T., 2015. Development of Column Flotation Technology. J. Chem. Pharm. Res., 7(2):540-549.
CHENG G., LIU J.T., MA L.Q., CAO Y.J., LI J.H., HUANG G., 2014. Study on Energy Consumption in Fine Coal Flotation. Int. J. Coal Prep. Util., 34(1): 38-48.
CHENG G., SHI C.L., LIU J.T., YAN X.K., 2016. Bubble-Distribution Measurement in a Flotation Column. Int. J. Coal Prep. Util., 36(5): 241-250.
DRINKWATER D., NAPIER-MUNN T., BALLANTYNE G., 2012. Energy reduction through eco-efficient comminution strategies. 26th International Mineral Processing Congress. New Delhi: 1223-1229..
GORAIN B.K., 2012. Developing solutions to complex flotation problems. 26th International Mineral Processing Congress. New Delhi: 1657-1675.
GUPTA V.K., 2013. Validation of an energy–size relationship obtained from a similarity solution to the batch grinding equation. Powder Technol., 249: 396-402.
HARBORT G., CLARKE D., 2017. Fluctuations in the popularity and usage of flotation columns -An overview. Miner. Eng., 100: 17-30.
HINZE J.O., 1975. Turbulence. McGraw-Hill, New York.
HLAWITSCHKA M.W., BART H.J., 2012. Determination of local velocity, energy dissipation and phase fraction with LIF and PIV-measurement in a Kühni miniplant extraction column. Chem. Eng. Sci., 69(1): 138-145.
HUANG G., 2013. Interfacial Effects of Flotation Conditioning and Process Intensification. China University of Mining and Technology, China.
JEANNE M., REUSS M., 1999. A critical assessment on the use of k–ε turbulence models for simulation of the turbulent liquid flow induced by a Rushton-turbine in baffled stirred-tank reactors. Chem. Eng. Sci., 54: 3921-3941.
JIANG H.J., CAO S.G., ZHANG Y., WANG C.. 2016. Analytical solutions of hard roof’s bending moment, deflection and energy under the front abutment pressure before periodic weighting. International Journal of Mining Science and Technology 26(1): 175-181.
KOH P.T.L., SCHWARZ M.P., ZHU Y., BOURKE P., PEAKER R., FRANZIDIS J.P., 2003. Development of CFD models of mineral flotation cells. Third International Conference on CFD in the Minerals and Process Industries. Melbourne: 171-175.
KOLMOGOROV, A.N., 1941. The local structure of turbulence in incompressible viscous fluid for very large Reynolds numbers. Proc. USSR Acad. of Sci., 30: 299-303.
KONG L.T., 2011. Study and Measure on Cyclonic Flow Field of Floatation Column by the PIV. China University of Mining and Technology, China.
LELINSKI D., GOVENDER D., DABROWSKI B., TRACZYK F., MULLIGAN M., 2011. Effective use of energy in the flotation Process. 6th Southern African Base Metals Conference. Phalaborwa: 137-148.
LI G.S., CAO Y.J., LIU J.T., WANG D.P., 2012. Cyclonic flotation column of siliceous phosphate ore. Int. J. Miner. Process., 110-111: 6-11.
PUHALES F. S., DEMARCO G., MARTINS L.G.N., ACEVEDO O.C., DEGRAZIA G. A., WELTER G. S., COSTA F. D., FISCH G. F., AVELARD A.C., 2015. Estimates of turbulent kinetic energy dissipation rate for a stratified flow in a wind tunnel. Physica A 431: 175-187.
QIN Z. H., LI X., SUN H., ZHAO C. C., RONG L. M., 2016. Caking property and active components of coal based on group component separation. International Journal of Mining Science and Technology 26: 571-575.
RAGAB S.A., FAYED H., 2012. Collision frequency of particles and bubbles suspended in homogeneous isotropic turbulence. 50th AIAA Aerospace Sciences Meeting Including the New Horizons Forum and Aerospace Exposition. Nashville: 1-12.
RINNE A., PELTOLA A., 2008. On lifetime costs of flotation operations. Miner. Eng., 21(12-14): 846-850.
SHEN Z.C., 2005. Research of 160 m3 flotation machine flotation dynamics. Nonferrous Met. (Miner. Process. Sect.), 27(5): 33-35.
SU X. B., SI Q., WANG Q., 2016. The XRD response during the coalification process. Journal of Henan Polytechnic University (Natural Science), 35: 487-492..
TABOSA E., RUNGE K., HOLTHAM P.N., 2012. Development and application of a technique for evaluating turbulence in a flotation cell. 26th International Mineral Processing Congress. New Delhi: 5377-5390.
TROMANS D., 2008. Mineral comminution: Energy efficiency considerations. Miner. Eng., 21(8): 613-620.
WANG F.J., 2004. Computational fluid dynamics analysis-Principles and Applications of CFD software. Tsinghua University Press, China.
WANG L.J., WANG Y.H., YAN X.K., WANG A., CAO Y.J., 2017. A numerical study on efficient recovery of fine-grained minerals with vortex generators in pipe flow unit of a cyclonic-static micro bubble flotation column. Chem. Eng. Sci., 158: 304-313.
WEI L.B., LI D.H., CHEN Z.G., SUN M.Y., ZHU X.S., 2017. Numerical simulation of force and separation on particles in pulsing airflow. Journal of China University of Mining & Technology 46(1): 162-168+176.
YANG L.J., SHI S.X., CHEN D., DONG G.G., ZHANG Y.J., LAI M.H., 2009. Research of 200 m3 flotation machine flotation dynamics. Nonferrous Met. (Miner. Process. Sect.), 31(2): 29-31.
YIANATOS J.B., 1989. Column Flotation Modelling and Technology. International Colloquium- Developments in Froth Flotation. Cape Town: 1-30.
ZHANG H.J., LIU J.T., WANG Y.T., CAO Y.J., MA Z.L., LI X.B., 2013. Cyclonic-static micro-bubble flotation column. Miner. Eng. 45: 1-3.
ZHAO D. F., GUO Y. H., BAI W. B., ZHANG J. X., LI M., GUO, X. Y., 2016. The characteristics and influencing factors of nanopores in shale gas reservoir of Wufeng and Longmaxi formation in southeast Chongqing. Journal of Henan Polytechnic University (Natural Science), 35: 497-506.