JMMCE  Vol.10 No.1 , January 2011
Recovery of Chromite Values from Plant Tailings by Gravity Concentration
ABSTRACT
Large tonnages of chromite tailing were discarded during processing of chromite ore in the conventional circuit. A typical chromite plant tailing was treated in wilfley table for the recovery of chromite values. Optimisation study was carried out for the process parameters of wilfley table using empirical models, developed from the experimental data. It was found that grade and recovery (% Cr2O3) in the concentrate fraction majorly depended on the variation of deck tilt angle. To achieve high grade (>45%) with acceptable recovery (>40%), set of optimisation condition of parameters have derived which resulted large quantity of wash water (>5lpm of flow rate) is necessary. Validation of the empirical models were done with set of tests which resulted good agreement with the predict values (R2 is 0.96 and 0.99 for the grade and recovery respectively).

Cite this paper
S. Tripathy, Y. Ramamurthy and V. Singh, "Recovery of Chromite Values from Plant Tailings by Gravity Concentration," Journal of Minerals and Materials Characterization and Engineering, Vol. 10 No. 1, 2011, pp. 13-25. doi: 10.4236/jmmce.2011.101002.
References
[1]   Demi G., Koci B, and Boci. S; Gravity concentration of poor chromium ores in Albania, XXIII International Mineral Processing Congress, Istanbul, Turkey, pp 310-312, 2006.

[2]   Meloy, T. P, Williams, M. C; Bevilacqua, P. ; Ferrara, G.; Shaking Tables - Effects Of Riffles; Minerals And Metallurgical Processing (Part A), SME Transactions Volume 296, pp. 1870-1877,1994.

[3]   Sivamohan R and Forssberg E, Principles of tabling, International Journal of Mineral Processing, 15 (1985), pp. 281—295.

[4]   Falconer, A.; Gravity separation: Old technique/new methods, Physical Separation in Science and Engineering, 2003, Vol. 12, No. 1, pp. 31–48.

[5]   Burt, R., 1984. Gravity Concentration Technology. Elsevier Science.

[6]   Carvalho M.T, Agante E., F. Dura, Recovery of PET from packaging plastics mixtures by wet shaking table, Waste Management 27 (2007) 1747–1754.

[7]   Selim A.Q, El-Midany A.A., Abdel-Fattah A.S, Ibrahim, S.S; Rationalization of the upgrading circuit of celestite for advanced applications; Powder Technology 198 (2010) ;pp.233–239.

[8]   Hosseini M.R, Bahrami A, Pazouki M; Influence of shaking table parameters on manganese grade and recovery; XXIV International Mineral Processing Congress (IMPC), 2008; Beijing, China, pp. 783-790.

[9]   Guney A., Onal G., and Atmaca T, New aspect of chromite gravity tailings re-processing; Minerals Engineering, Vol 14. No I I. pp 1527 -1530, 2001.

[10]   Cicek, T. C. and Cocen, I.; Applicability of Mozley multigravity separator (MGS) to fine chromite tailings of Turkish chromite concentrating plants, Minerals Engineering 15, pp 91–93 (2002).

[11]   Ozkan S.G. and Ipekoglu B; Concentration Studies on Chromite Tailings by Multi Gravity Separator, 17th International Mining Congress and Exhibition of Turkey- IMCET2001,pp 765-768, 2001.

[12]   Cicek, T, Cocen, I and Samanli; (1998), Gravimetric concentration of fine chromite tailings. Innovation in mineral and coal processing, pp 731-736, Atak, Onal and Celik (eds), Balkema, Rotterdam, The Netherlands.

[13]   Belardi. G, Sheau. N, Plescia. P, and Vegilo. F, Recent developments in gravity treatment of chromite fines, Minerals and Metallurgical Processing, Aug. 1995, pp. 161-165.

[14]   Sonmez, E and Turgut, B. 1998. Enrichment of low-grade Karaburhan chromite ores by gravitational methods, Innovation in mineral and coal processing, pp 723-726, Atak, Onal and Celik (eds), Balkema, Rotterdam, The Netherlands.

 
 
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