Keywords
Biomodulation
Flotation
Sulfides Biomodulación
Flotación
Sulfuros
Flotation
Sulfides Biomodulación
Flotación
Sulfuros
How to Cite
Mejía Restrepo, E., Osorno Bedoya, L., Ospina Correa, J. D., & Márquez Godoy, M. A. (2011). Differential flotation of sulfides in Hallimond cells mediated by Acidithiobacillus ferrooxidans. Informador Tecnico, 75. https://doi.org/10.23850/22565035.16
Abstract
This work studied the effect of oxidant preconditioning with Acidithiobacillus ferrooxidans preceded by a differential flotation process in Hallimond cell for pyrite-galena, pyrite-chalcopyrite, and pyrite-sphalerite mixtures with particlesizes at -200, according to the Tyler sieve series and different time periods. Said treatment reduced the buoyancy of galena and chalcopyrite and increased buoyancy of pyrite in the respective mixtures. For the pyrite-sphalerite mixture,sphalerite buoyancy was generated and pyrite buoyancy was decreased. The results indicate that the mineral-bacteria interaction generated changes on the surface of minerals, which have different physical and chemical characteristicsfrom the original sulfide, permitting sulfide separation via flotation.References
Amini, E., Oliazadeh, M., Kolahdoozan M. Kinetic comparison of biological and conventional flotation of coal. Minerals Engineering, V. 22. N. 4. (March, 2009); p. 344-347.
https://doi.org/10.1016/j.mineng.2008.09.008
Bhatti, T.M., Bigham, J.M., Vuorinen, A., Tuovinen, O.H. Biological leaching of sulfides with emphasis on pyrrhotite and pyrite. In: Proceedings of International Symposium on Biotechnology for Sustainable Development, Kauser A, Malik, Anwar Nasim & Ahmad M. Khalid, NIBGE, Faisalabad, Pakistan. (1993); p. 299-308.
Boulton, A., Fornasiero, D., Ralston, J. Effect of iron content in sphalerite on flotation. Minerals Engineering V.18. N. 11. (September, 2005); p.1120–1122.
https://doi.org/10.1016/j.mineng.2005.03.008
CASAS, A.E. Mineralogia dos processos de oxidacao sobre pressao e bacteriana do minerio de ouro da mina Sao Bento, MG. 2007. Tese de doutorado. Universidad de Brasilia. Tese de doutorado. Pontifícia Universidade Católica do Rio de Janeiro.
CASTRO, S., GARCÍA, J.A. Flotación Fundamentos y aplicaciones. 2003. Universidad de Concepción. Departamento de ingeniería Metalurgia. DIMET.
Chandraprabha, M.N., Natarajan, K.A., Modak, J.M. Selective separation of pyrite andchalcopyrite by biomodulation. Colloids nad Surfaces B: Biointerfaces. V. 37. (2004); p.93-100.
https://doi.org/10.1016/j.colsurfb.2004.06.011
Chandraprabha, M.N., Natarajan, K.A., Somasundaran, P. Selective separation of pyrite from chalcopyrite and arsenopyrite by biomodulation using Acidithiobacillus ferrooxidans. Int. J. Miner. Process. V. 75. (2005); p.113-122.
https://doi.org/10.1016/j.minpro.2004.08.014
Da Silva, G. Kinetics and mechanism of the bacterial and ferric sulphate oxidation of galena. Hydrometallurgy. V. 75. N. 1-4. (November, 2004); p. 99-110.
https://doi.org/10.1016/j.hydromet.2004.07.001
Hosseini, T.R., Kolahdoozan, M., Tabatabaei, Y.S.M., Oliazadeh, M., Noaparast, M., Eslami, A., Manafi, Z., Alfantazi, A. Bioflotation of sarcheshmeh copper ore using Thiobacillus ferrooxidans bacteria. Minerals engineering. V. 18. (March, 2005); p.371-374.
https://doi.org/10.1016/j.mineng.2004.06.005
Jones, F.J.; Lecount, S.; Smart, R.; White, T.J. Compositional and structural alteration of pyrrhotite surfaces in solution: XPS and XRD studies. Applied Surface Science. V. 55. (1992); p. 65-85.
https://doi.org/10.1016/0169-4332(92)90382-8
Kolahdoozan, M., Tabatabaei Yazdi, S.M., Yen, W.T., Hosseini Tabatabaei, R., Shahverdi, A.R., Oliazadeh, M., Noaparast, M., Eslami, A., Manafi Z. Bioflotation of the low grade Sarcheshmeh copper sulfide. Trans. Indian Inst. Met. V. 57. N. 5. (2004); p. 485-490.
Langwaldt, J., Kalapudas, R. Bio-beneficiation of multimetal black shale ore by flotation. Physico. Problems of Mineral Processing (Fizykochemiczne Problemy Mineralurgii). V. 41. (2007); p.291-299.
MÁRQUEZ, M.A., ARROYAVE, D.M., BEDOYA, A., CAICEDO, G., MEJÍA, E., MORÁN, M., OSPINA, J.D. Ponencia: La biotecnología: diversas aplicaciones como una opción más limpia para la minería.IV Simposio sobre Bio-fábricas. Universidad Nacional de Colombia sede Medellín. Duración: 4 al 6 de agosto de 2009.
Pearse, M.J. An overview of the use of chemical reagents in mineral processing. Minerals Engineering. V. 18. N. 2. (February, 2005); p. 139–149.
https://doi.org/10.1016/j.mineng.2004.09.015
Rehwald, G. The application of ore-microscopy in beneficiation of ores of the precious metals and the nonferrous metals. In: Hugo Freund Ed., Applied ore microscopy, theory and technique, New York. (1996); p. 439-537.
Santhiya, D., Subramanian, S., Natarajan, K.A. Surface chemical studies on galena and sphalerite in the presence of Thiobacillus thiooxidans with reference to mineral beneficiation. Minerals Engineering. V. 13. N. 7. (July, 2000); p. 747-763.
https://doi.org/10.1016/S0892-6875(00)00059-5
Subramanian, S., Santhiya, D., Natarajan, K. A. Surface modification studies on sulphide minerals using bioreagents. International Journal of Mineral Processing. V. 72. N. 1-4., 2003. p. 175-188.
https://doi.org/10.1016/S0301-7516(03)00097-8
Vilinska, A., Hanumantha Rao, K. Leptospirillum ferrooxidans-sulfide mineral interactions with reference to bioflotation and bioflocculation. Trans. Nonferrous Met. Soc. China. V. 18. N. 6. (December, 2008); p. 1403-1409.
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