Optimization of Alkaline Sulfide Leaching of Gold-Antimony Concentrates

Abstract:

This article covers a hydrometallurgical method for processing of a gold-antimony flotation concentrate in alkaline sulfide solutions. Thermodynamic analysis of the reaction stibnite with sulfide sodium and sodium hydroxide was performed. The chemical and phase compositions of the investigated material, mainly represented by compounds of antimony, silicon, calcium, sulfur and iron are studied. Phase composition: quartz, stibnite, quicklime, pyrite, dolomite and arsenopyrite. The dependences of the influence of sulfide sodium and sodium hydroxide concentration, and the liquid to solid ratio on antimony extraction into solution were determined by methods of mathematical experiment planning. The calculated values ​​of the determination coefficients testify to the adequacy of the chosen two-level model. The optimum parameters of the process were obtained: L/S ratio = 4,5; the nitric acid sulfide sodium concentration was 61.09 g/L; sodium hydroxide concentration was 16.47 g/

• Periodical: Materials Science Forum (Volume 989)
• Pages: 525-531
• DOI: https://doi.org/10.4028/www.scientific.net/MSF.989.525
• Online since: May 2020
• Authors: R.E. Rusalev*, Denis A. Rogozhnikov, A.A. Koblik
• Keywords: Alkaline Leaching, Antimonite, Experiment Planning, Gold Bearing Concentrates, Mathematical Model, Sodium Sulfide

References

[1] Ponomareva E.I., Solovieva V.D., Bobrova V.V., Arsenic in the lead-zinc industry. Alma-Ata: Science KazSSR, (1975).

[2] Ognev M.S., Search for an effective method for dearsenizing raw materials and semi-finished pyrometallurgy products of non-ferrous metals. Science Week SPBPU. (2018) 45-49.

[3] Melnikov S.M., Antimony. Moscow: Metallurgy, (1977).

[4] Solozhenkin P.M., To the problem of leaching of antimony sulfide minerals with metal halides. Seminar, 18 (2007) 280-286.

[5] Davidenko P.S., The kinetics of the interaction of antimony sulfide with a solution of nitric acid. UNIVERSITY JOURNAL. NON-FERROUS METALLURGY, 1 (2006) 24-27.

[6] Sminčáková E., Raschman P. Leaching of Stibnite by Mixed Na2S and NaOH Solutions. ACTA TECHNICA CORVINIENSIS–Bulletin of Engineering, 5 (2012) P. 35-37.

DOI: 10.1016/j.hydromet.2011.11.017

[7] Sminčáková E. Leaching of Natural Stibnite Using Na2S and NaOH Solutions. International Journal of Energy Engineering, 1(2) (2011) 85-89.

DOI: 10.5963/ijee0102006

[8] Karelin V.A., Strashko A.N., Skorik L.F., Hydroelectrometallurgy Antimony, (2013).

[9] Samuel A. Awe, Åke Sandström Electrowinning of antimony from model sulphide alkaline solutions. Hydrometallurgy, 137 (2013) 60-67.

DOI: 10.1016/j.hydromet.2013.04.006

[10] Zakharov B.A., Meretukov M.A., GOLD: refractory ores. Moscow: Publishing hous «Ore&Metals», (2013).

[11] Kotlyar Yu.A., Meretukov M.A., Strizhko L.S., Metallurgy of precious metals. Moscow: MISIS, (2005).

[12] Nemodruk A.A., Analytical chemistry of antimony. Moscow: Science, (1978).

[13] Vasiliev V.P., Analytical chemistry. Titrimetric and gravimetric analysis methods. Moscow: Drofa, (2007).

[14] Khalafyan AA, Statistica 6. Mathematical statistics with elements of probability theory. Moscow: Binom, (2010).

[15] Rusalev R.E., Grokhovskii S.V., Rogozhnikov D.A., Naboichenko S.S. Investigation and Development of the Technology of Processing Gold-Antimony Flotation Concentrates. Journal of Siberian Federal University, Chemistry 1 (2018) 110-121.

[16] Sudakov D.V., Chelnokov S.Yu., Rusalev R.E., Elshin A.N., Technology and Equipment for Hydrometallurgical Oxidation of Refractory Gold-Bearing Concentrates (ES-Process) Tsvetnye Metally, 3 (2017) 40-44.

DOI: 10.17580/tsm.2017.03.06

[17] Rogozhnikov D.A., Mamyachenkov S.V., Anisimova O.S. Nitric acid leaching of copper-zinc sulfide middlings. Metallurgist, 60 (2016) 229-233.

DOI: 10.1007/s11015-016-0278-7