The significance of flotation froth appearance for machine vision control

International Journal of Mineral Processing

Volumn 48, Issue 3-4, 1996, Pages 135-158

  Moolman, D W ^a   Eksteen, J J ^a   Aldrich, C ^a   Van Deventer, J S J ^a  

^a STELLENBOSCH UNIVERSITY   (South Africa)

Author keywords

Flotation; Image analysis

Indexed keywords

COMPUTER CONTROL; COMPUTER VISION; CONSTRAINT THEORY; CONTROL SYSTEMS; IMAGE ANALYSIS; ROBUSTNESS (CONTROL SYSTEMS);

ROBUST AUTOMATIC CONTROL SYSTEMS;

FROTH FLOTATION;

EID: 0030418631     PISSN: 03017516     EISSN: None     Source Type: Journal    
DOI: 10.1016/S0301-7516(96)00022-1     Document Type: Article

References (55)

1. Ahmed, N. and Jameson, G.S., 1985. The effect of bubble size on the rate of flotation of line particles. Int. J. Miner. Process., 14: 195-215.
2. Aldrich, C., Moolman, D.W., Eksteen, J.J. and Van Deventer, J.S.J., 1995. Characterization of flotation processes with self-organizing neural nets. Chem. Eng. Commun., 139: 25-39.
3. Barker, L.M., 1986. The effect of electrolytes on the flotation of pyrite. M.Sc. Thesis, University of Cape Town.
4. Bartsch, O., 1975. Foaming power and surface tension. Kolloidchem. Beih., 20(1).
5. Bascur, O.A. and Herbst, J.A., 1989. On the development of a model based control strategy for copper ore flotation. In: E. Forssberg (Editor), Developments in Mineral Processing. 6: Flotation of Sulphide Minerals. Elsevier, Amsterdam.
6. Brown, A.C., Thuman, W.C. and McBain, J.W., 1953. The surface viscosity of detergent solutions as a factor in foam stability. J. Colloid Sci., 8: 491-507.
7. Cutting, G.W., 1989. Effect of froth structure and mobility on plant performance. Miner. Process. Extract. Metall. Rev., 5: 169-201.
8. Cutting, G.W., Barber, S.P. and Newton, S., 1986. Effects of froth structure and mobility on the performance and simulation of continuously operated notation cells. Int. J. Miner. Process., 16: 43-61.
9. Dippenaar, A., 1982a. The destabilization of froth by solids. I. The mechanism of film rupture. Int. J. Miner. Process., 9: 1-14.
10. Dippenaar, A., 1982b. The destabilization of froth by solids. II. The rate-determining step. Int. J. Miner. Process., 9: 15-27.
11. Dobby, G.S. and Finch, J. A., 1986. Particle collection in columns - gas rate and bubble size effects. Can. Metallurg. Q., 27(1): 9-13.
12. Dobby, G.S. and Finch, J.A., 1990. Column Flotation. Pergumon Press, New York.
13. Ellis, R.N., Hornsby, D.T., Walker, D. and Clarkson, C., 1993. An assessment of froth behaviour in full scale coarse flotation cells. Coal Prep., 12: 27-39.
14. Engelbrecht, J.A. and Woodhurn, E.T., 1975. The effects of froth height, aeration rate and gas precipitation on flotation. J. S. Afr. Inst. Min. Metall., (Oct.): 125-131.
15. Fuerstenau, D.W., 1980. Fine particle flotation. In: P. Somasundaran (Editor), Fine Particle Processing, Vol. 1, AIME, New York.
16. Fuerstenau, M.C., 1982. Sulphide mineral flotation. In: P.R. King (Editor), Principles of Flotation. S. Afr. Inst. Min. Metall. Monogr. Scr., 3: 159-182.
17. Gaudin, A.M., 1932. Flotation. McGraw Hill, New York.
18. Glembotskii, V.A., 1972. Flotation. Primary Sources, New York.
19. Gupta, D., 1989. Enhanced recovery of the coarse phosphate particles. M.Sc. Thesis, University of Florida, Gainesville, FA.
20. Hanumanth, G.S. and Williams, D.J.A., 1990. An experimental study of the effects of froth height and flotation of China clay. Powder Technol., 60: 131-144.
21. Harris, P.J., 1978. Frothing phenomena and frothers. In: Principles of Flotation. The South African Institute of Mining and Metallurgy, Vacation School, University of the Witwatersrand, Johannesburg.
22. Harris, P.J., 1982. Frothing phenomena and frothers. In: Principles of Flotation, SAIMM, Monograph series No. 3, Ch. 13, pp. 237-251.
23. Hewett, D., Fornasiero, D. and Ralston, J., 1994. Bubble particle attachment efficiency, Miner. Eng., 7(5/6): 657-665.
24. Hulbert, D.G. and Henning, R.G.D., 1993. Flotation plant control. In: SAIMM School: Process Simulation, Control, and Optimisation, The South African Institute of Mining and Metallurgy, Randburg, pp. 1-10.
25. Huls, B.J. and Gomez, C.O., Uribe-Salas, A. and Finch, J.A., 1990. Level detection in flotation columns at Falcon Bridge. In: Control '90: Mineral and Metallurgical Processing, Society for Mining, Metallurgy and Exploration, Littleton, CO.
26. Kitzinger, F., Rosenblum, F. and Spire, P. 1979. Continuous modelling and control of froth level and pulp density. Min. Eng., 31: 390-395.
27. Laplante, A.R., Toguri, J.M. and Smith, H.W., 1983a. The effect of air flow rate on the kinetics of flotation. Part I: The transfer of material from the slurry to the froth. Int. J. Miner. Process.. 11: 203-219.
28. Laplante, A.R., Toguri, J.M. and Smith, H.W., 1983b. The effect of air flow rate on the kinetics of flotation. Part II: The transfer of material from the froth over the cell lip. Int. J. Miner. Process., 11: 221-234.
29. Leju, J., 1982. Surface Chemistry of Froth Flotation. Plenum Press, New York.
30. Lynch, A.J. et al., 1974. The behaviour of minerals in sulphide flotation processes, with reference to simulation and control. J. S. Afr. Inst. Min. Metall., 74: 349-361.
31. Lynch, A..J., Johnson, N.W., Manlapig, E.V. and Thorne, C.G., 1981. Mineral and Coal Flotation Circuits, Developments in Mineral Processing. 3. Elsevier, Amsterdam.
32. McKee, D.J., 1991. Automatic flotation control - a review of 20 years of effort. Miner. Eng., 4(7-11): 653-666.
33. McKee, D.J., 1992. Case studies in flotation control. In: P. Mavros and K.A. Mats (Editors), Innovations in Flotation Technology, Kluwer Academic Publishers, Kalithea (Greece).
34. Mehrotra, S.P. and Kapur, P.C., 1974. The effects of aeration rate, particle size and pulp density on the flotation rate distributions. Powder Technol., 9: 213-219.
35. Moolman, D.W., Aldrich, C. and Van Deventer, J.S.J., 1995a. The monitoring of froth surfaces on industrial flotation plants using connectionist image processing techniques. Miner. Eng., 8(1-2): 23-30.
36. Moolman, D.W., Aldrich, C., Van Deventer, J.S.J. and Stange, W.W., 1995b. The automatic classification of froth structures in flotation plants. Int. J. Miner. Process., 43: 193-208.
37. Moolman, D.W., Aldrich, C., Van Deventer, J.S.J. and Bradshaw, D.B., 1995c. The interpretation of flotation froth surfaces by using digital image analysis and neural networks. Chem. Eng. Sci., 50(22): 3501-3513.
38. Moudgil, B.M., 1993. Correlation between froth viscosity and notation efficiency. Miner. Metallurg. Process., 10(2): 100-101.
39. O'Connor, C.T. and Dunne, R.C., 1994. The flotation of gold-bearing ores - a review. Miner. Eng., 7(7): 839-849.
40. O'Connor, C.T., Dunne, R.C. and Botelho de Sousa, A.M.R., 1985. The effect of temperature on the flotation of pyrite from two different ores. In: Proceedings of the XVth International Mineral Processing Congress, Cannes, pp. 211-221.
41. O'Connor, C.T., Botha, C., Walls, M.J. and Dunne, R.C., 1988a. The role of copper sulphate in pyrite flotation. Miner. Eng., 1(3): 203-212.
42. O'Connor, C.T., Botelho de Sousa, A.M.R. and Dunne, K.C., 1988b. The effect of the temperature on the flotation of pyrite from ores of varying particle-size distributions and mineral composition. In: Proceedings of the XVI International Mineral Processing Congress, pp. 1243-1254.
43. O'Connor, C.T., Randall, E.W. and Goodall, C.M., 1990. Measurement of the effects of physical and chemical variables on bubble size. Int. J. Miner. Process., 28: 139-149.
44. Pryor, E.J., 1965. Mineral Processing. Elsevier, Amsterdam, 3rd ed., pp. 501-503.
45. Reay, D. and Ratcliff, G.A., 1973. Removal of fine particles from water by dispersed air flotation: Effects of bubble size and particle size on collection efficiency Can. J. Chem. Eng., 51: 178.
46. Subrahmanyam, T.V. and Forssberg, E., 1988. Frother performance in flotation of copper and lead-zinc ores. Trans. Inst. Min. Metall., 97(Sept.): c134-c142.
47. Sutherland, K.L., 1948. Kinetics of the flotation process. J. Phys. Chem., 52: 394-404.
48. Sutherland, D., Gottlieb, P. and Jackson, R. 1991. Application of automated quantitative mineralogy in mineral processing. Miner. Eng., 4(7): 753-762.
49. Symonds, P.J. and De Jager, G., 1992. A technique for automatically segmenting images of the surface froth structures that are prevalent in flotation cells. In: Proceedings of the 1992 South African Symposium on Communications and Signal Processing. University of Cape Town, Rondebosch, pp. 111-115.
50. Warren, L.J., 1984. Ultrafine particles in flotation. In: M.H. Jones and J.T. Woodcock (Editors), Principles of Mineral Flotation. The Wark Symposium, Symp. Series No. 40. Aust. Inst. Min. Metall., p. 185.
51. White, M.E., 1973. Drainage models for mineral components in flotation froth, B.Sc. Hon. Thesis, Unversity of Queensland.
52. Win, U.N. and Yan, D.S., 1992. Factors affecting the recovery and grade of complex lead zinc ores by flotation. Annu. Rep. W.A. School Mines: 17-24.
53. Woodburn, ET., Stockton, J.B. and Robbins D.J., 1989. Vision-based characterization of three-phase froths. In: International Colloquium - Developments in Froth Flotation, South African Institute of Mining and Metallurgy, Gordon's Bay, Vol. 1, pp. 1-30.
54. Woodburn, E.T., Austin, L.G. and Stockton, J.B., 1994. A froth based flotation kinetic model. Trans. IChemE, 72(A)(March): 211-226.
55. Yoon, R.H. and Luttrell, G.H., 1989. The effect of bubble size on fine particle flotation. Miner. Process. Extract. Metall. Rev., 5: 101-122.