Au Extraction from Mineral Rocks with Aeration-Cyanidation Hydrometallurgy and Comparative Study of Its Effectiveness in Various Methods and Solvents

Dhita Ariyanti, Muhammad Syaifuddin


Indonesia is a country with abundant mining potential, one of it is gold (Au) which has a high economic value. Separation of gold metal from mineral rock consists of several methods, such as extraction, hydrometallurgy, and membrane emulsifier technology. These three methods produce different effectiveness of percentage recovery (%recovery), depend on the optimum conditions of each method and type of solvent. This study aims to separate the gold metal from mineral rocks through the hydrometallurgical method with an aeration-cyanidation solvent combination. Hidrometallurgy method is liquid extraction from ores. The test used is a qualitative test of SnCl2 solution and characterization test with XRF. The results showed that the percentage of recovery (%recovery) of Au with aeration and cyanidation process for 24 hours was 92.8%. Aeration and cyanidation better than emulsifier membrane method and hydrometallurgy with sodium bisulphite, hydrogen peroxide, Cyanex 272 and NH4Cl 0.9 M.


separation; hydrometallurgy; cianidation; %recovery

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D. Iswanto, “Statistik Pertambangan Nonminyak dan Gas Bumi Mining Statistics of Non-Petroleum and Natural Gas 2011-2015”, Jakarta: Badan Pusat Statistika/ BPS-Statistics Indonesia, 2015

S. Boudesocque, A. Mohamadou, A. Conreux, B. Marin, and L. Dupont, “The recovery and selective extraction of gold and platinum by novel ionic liquids (Accepted Manuscript)”, Separation and Purification Technology, pp. 1-38, 2018.

M. Masilela and S. Ndlovu, “Extraction of Ag and Au from Chloride Electronic Waste Leach Solutions Using Ionic Liquids (Accepted Manuscript)”, Journal of Environmental Chemical Engineering, pp. 1-21, 2018.

W. D. Xing, M. S. Lee, and G. Senanayake, “Recovery of metals from chloride leach solutions of anode slimes by solvent extraction. Part I: Recovery of gold with Cyanex 272”, Hydrometallurgy, vol. 180, pp. 58-64, 2018.

A. Cieszynska and D. Wieczorek, “Extraction and separation of palladium(II), platinum(IV), gold(III) and rhodium(III) using piperidine-based extractants (Accepted Manuscript)”, Hydrometallurgy, pp. 1-36, 2018.

F. Rofika and T. A. Rachmanto, “Proses Hidrometalurgi Menggunakan Pelarut Aqua Regia Pada Recovery Logam Emas (Au) Limbah Elektronik PCB HP”, Jurnal ENVIROTEK, vol. 9, no. 1, pp. 1-6, 2017.

M. Alimano and R. Rinjani, “Penelitian Awal Ekstraksi Emas Dan Logam Lainnya Dari Tanaman Akar Wangi (Vetiveria Zizanioides) Menggunakan Metode Klorinasi Basah”, Jurnal Teknologi Mineral dan Batubara, vol. 13, no. 1, pp. 45-51, 2017.

D. M. Susiyadi, I. W. Dasna, and E. Budiasih, “Pemisahan Dan Karakterisasi Emas Dari Batuan Alam dengan Metode Natrium Bisulfit” Jurnal Universitas Negeri Malang, pp. 1-11, 2013.

I. Santoso, and Tatian, “Ekstraksi Emas dari Limbah Papan Sirkuit Telepon Genggam Menggunakan Teknik Membran Cair Emulsi”, Valensi, vol. 3, no. 2, pp. 45-50, 2013.

G. Deschenes and G. Wallingford, “Effect of Oxigen and Lead Nitrate on The Cyanidation of Sulphide Gold Ore”, Mineral Engineering, vol. 8, no. 8, pp. 923-931, 1995.

R. Perky, R. E. Browner, R. Dunnei, and N. Stoitis, “Low pH Cyanidation of Gold”, Mineral Engineering, vol. 12, no. 12, pp. 1431-1440, 1999.

E. A. Oraby, J. J. Eksteen, and B. C. Tanda, “Gold and copper leaching from gold-copper ores and concentrates using a synergistic lixiviant mixture of glycine and cyanide”, Hidrometallurgy, vol. 169, pp. 339-345, 2017.

T. O. Nunan, I. L. Viana, G. C. Peixoto, H. Ernesto, D. M. Verster, J. H. Pereira, J. M. Bonfatti, and L. A. C. Teixeira, “Improvements in gold ore cyanidation by pre-oxidation with hydrogen peroxide”, Mineral Engineering, vol. 108, pp. 67-70, 2017.