The response of Imogbara (Nigeria) gold ore to shaking tabling gravity separation methods was investigated in this research work. Gold concentration in run-off mines is usually as low as 0.005 ppm and must be upgraded in order to reduce the recovery process extraction costs. Gravity separation method (the focus of this work) is one of the readily affordable beneficiation methods. Shaking table is a developed separation equipment of gravity method that has been adopted to increase concentrate based on difference of specific gravity. The output result of the concentration process using shaking table is basically influenced by a number of variables, such as rotational shaking speed, particle size and deck slope. In this research, the range of rotational speed shaking was between 100 rpm and 200 rpm, the particle size was between (−300 μm > X < +75 μm) and (−75 μm) and deck slope was between 10° and 30°. EDXRF was used to measure gold concentration in the concentrate as well as the tailings. The result shows that the optimum condition is obtained at a shaking speed of 100 rpm, with a slope of 10° and particle size less than 75 μm.
References
[1]
Vaughan, J.P. (2004) The Process Mineralogy of Gold: The Classification of Ore Types. JOM, 56, 46-48. https://doi.org/10.1007/s11837-004-0092-8
[2]
Marsden, J.O. and House, C. L. (2006) The Chemistry of Gold Extraction. 2nd Edition, Society of Mining, Metallurgy, and Exploration (SME), Englewood, CO.
Gul, A., Kangal, O., Sirkeci, A.A. and Onal, G. (2012) Beneficiation of the Gold Bearing Ore by Gravity and Flotation. International Journal of Minerals, Metallurgy and Materials, 19, 106-110. https://doi.org/10.1007/s12613-012-0523-4
[5]
Wills, B.A. and Finch, J.A. (2015) Wills’ Mineral Processing Technology, Eighth Edition: An Introduction to the Practical Aspects of Ore Treatment and Mineral Recovery. 8th Edition, Butterworth-Heinemann, Oxford.
[6]
Everett, J., Howard, T. and Beven, B. (2011) Precision Analysis of Iron Ore Sampling, Preparation and Measurement Overcoming Deficiencies in Current Standard ISO 3085. Mining Technology, 120, 65-73. https://doi.org/10.1179/1743286311Y.0000000002
[7]
Wang, X., Qin, W., Jiao, F., Yang, C., Cui, Y., Li, W., Zhang Z. and Song, H. (2019) Mineralogy and Pretreatment of a Refractory Gold Deposit in Zambia. Minerals, 9, Article No. 406. https://doi.org/10.3390/min9070406
[8]
Barnov, N.G., Lavrinenko, A.A. and Lusinyan, O.G. (2018) Effect of a Crushing Technique on Lead—Zinc Ore Processing Performance. Journal of Mining Science, 53, 771-777. https://doi.org/10.1134/S1062739117042765
[9]
Bargawa, W.S. and Hardiyanto, E. (2017) Characterization of the Gold Ore to Acquire an Optimum Degree of Liberation. Journal of Environmental Science and Engineering B, 6, 332-338. https://doi.org/10.17265/2162-5263/2017.06.006
[10]
Egbe, E.A.P., Mudiare, E., Abubakre, O.K. and Ogunbajo, M.I. (2013) Effectiveness of Gravity Separation Methods for the Beneficiation of Baban Tsauni (Nigeria) Lead-Gold Ore. International Journal of Scientific and Research Publications, 3, 1-7.
[11]
Konadu, K.T., Abaka-Wood, G.B. and Ofori Sarpong, G. (2014) Gold Loses Due to Silt Formation in Leaching Tanks. 3rd UMaT Biennial International Mining and Mineral Conference, Tarkwa, 30 July-2 August 2014, 289-293.
[12]
Dieye, M., Thiam, M., Geneyton, A. and Gueye, M. (2021) Monazite Recovery by Magnetic and Gravity Separation of Medium Grade Zircon Concentrate from Senegalese Heavy Mineral Sands Deposit. Journal of Minerals and Materials Characterization and Engineering, 9, 590-608. https://doi.org/10.4236/jmmce.2021.96038
[13]
Osei, R., Abaka Wood, G.B., Ofori Sarpong, G. and Amankwah, R.K. (2016) Siltation of Ore Particles in Leaching Tanks: Causative Factors and Mitigation Measures. Ghana Mining Journal, 16, 51-57. https://doi.org/10.4314/gm.v16i2.7
[14]
Ogundare, O.D., Adeoye, M.O., Adetunji, A.R. and Adewoye, O.O. (2014) Beneficiation and characterization of Gold from Itagunmodi Gold Ore by Cyanidation. Journal of Minerals and Materials Characterization and Engineering, 2, 300-307. https://doi.org/10.4236/jmmce.2014.24035
[15]
Gokelman, M., Birich, A., Stopic, S. and Friedrich B. (2016) A Review on Alternative Gold Recovery Reagents to Cyanide. Journal of Materials Science and Chemical Engineering, 4, 8-17. https://doi.org/10.4236/msce.2016.48002 http://www.scirp.org/journal/msce
[16]
Hirajima, T., Petrus, H.T.B.M., Oosako, Y., Nonaka, M., Sasaki, K. and Ando, T. (2010) Recovery of Cenospheres from Coal Fly Ash Using a Dry Separation Process: Separation Estimation and Potential Application. International Journal of Mineral Processing, 95, 18-24. https://doi.org/10.1016/j.minpro.2010.03.004
