Benefisiasi Bijih Emas dan Perak Kadar Rendah Menggunakan Palong dan Metode Flotasi

https://doi.org/10.22146/jrekpros.35483

Widi Astuti(1*), Kusno Isnugroho(2), Fika Rofiek Mufakhir(3), Ulin Herlina(4), Isti Nurjanah(5)

(1) Balai Penelitian Teknologi Mineral – LIPI Jl. Ir. Sutami Km. 15 Tanjungbintang, Lampung Selatan, Lampung
(2) Balai Penelitian Teknologi Mineral – LIPI Jl. Ir. Sutami Km. 15 Tanjungbintang, Lampung Selatan, Lampung
(3) Balai Penelitian Teknologi Mineral – LIPI Jl. Ir. Sutami Km. 15 Tanjungbintang, Lampung Selatan, Lampung
(4) Balai Penelitian Teknologi Mineral – LIPI Jl. Ir. Sutami Km. 15 Tanjungbintang, Lampung Selatan, Lampung
(5) Balai Penelitian Teknologi Mineral – LIPI Jl. Ir. Sutami Km. 15 Tanjungbintang, Lampung Selatan, Lampung
(*) Corresponding Author

Abstract


A B S T R A C T

Beneficiation of low-grade gold and silver ores were investigated by gravity concentration flotation methods. The ores were obtained from Way Kanan Region and Mount Burhan in Province of Lampung. In this study, gravity concentration in sluice box and flotation were performed in sequence. Effect of particle size was investigated in gravity concentration by sluice box. Furthermore, effect of various parameters in flotation operation such as concentration of collector, ore particle size, and processing time were studied. Gravity concentration in sluice box indicated that the highest recovery of gold and silver were 76.52% and 94.83%, respectively when using ore particle size of 100+150 mesh. Flotation experiments showed that the maximum recoveries of gold and silver obtained were 98.33% and 86.42%. The conditions to obtain maximum recovery in this study were -100+150 mesh of ores particle size, 25 mL/kg concentration of collector, and 25 minutes of processing time.

Keywords: beneficiation; flotation, gold ore; silver ore; sluice box.


A B S T R A K

Benefisiasi bijih emas dan perak kadar rendah menggunakan konsentrasi gravitasi dengan palong dan menggunakan flotasi telah dilakukan. Bijih emas dan perak yang digunakan berasal dari daerah Way Kanan dan Gunung Burhan di Provinsi Lampung. Pada penelitian ini, konsentrasi gravitasi dengan palong dilakukan terlebih dahulu sebelum dilakukan benefisiasi menggunakan flotasi. Pengaruh ukuran partikel dipelajari pada konsentrasi gravitasi dengan palong. Sedangkan pengaruh beberapa variabel seperti konsentrasikolektor, ukuran partikel, dan waktu flotasi dipelajari dalam proses benefisiasi menggunakan flotasi. Pada konsentrasi gravitasi dengan palong, hasil percobaan menunjukkan bahwa persen recovery emas dan perak tertinggi secara berturut-turut adalah 76,52% dan 94,83% ketika digunakan ukuran partikel -100+150 mesh. Pada proses flotasi, hasil percobaan menunjukkan bahwa persen recoveryemas dan perak maksimum yang diperoleh adalah 98,33% dan 86,42% ketika digunakan ukuran partikel -100+150 mesh, konsentrasi kolektor 25 mL/kg dan waktu flotasi 25 menit.

Kata kunci: benefisiasi; emas; flotasi; palong; perak



Keywords


beneficiation; flotation, gold ore; silver ore; sluice box.

Full Text:

PDF


References

Beattie M.J.V., 2010, Gravity Concentration and Flotation of Spanish Mountain Composites, A Summary Report from Beattie Consulting Ltd, Canada.

Feng, D., Aldrich, C., 1999, Effect of particle size on flotation performance of complex sulphide ores, Minerals Engineering, 7, 721–731.

Ferdana, A.D., Petrus, H.T.B.M,Bendiyasa, I.M., Prijambada, I.D., Hamada, F. and Sachiko, F., 2018, Optimization of gold ore Sumbawa separation using gravity method: Shaking table, AIP Conference Proceedings 1945, 020070; doi: 10.1063/1.5030292.

Fuerstenau, D.W., 1980, Fine particle flotation”, in: P. Somasundaram, (Ed.), Fine Particles Process., pp. 669–705.

Kementerian ESDM, 2017, Laporan Kinerja Kementerian ESDM 2017, Kementerian Energi dan Sumber Daya Mineral, Jakarta.

Markovic, Z. S., and Milosavljevic, S., 2010, Effect of the particle size and mineralogy on flotation recovery at copper ore flotation, Proceeding of the V International Conference in Metallurgy, Refractories and Environment, 223-229.

Marsden, J and House, I, 1999, The Chemistry of Gold Extraction, Ellis Horwood, New York.

Nguyen, A.V., 2003, New method and equations for determining attachment tenacity and particle size limit in flotation, Int. J. Miner. Process., 68, 167–182.

Petrus, H.T.B.M., Hirajima, T., Sasaki, K., Okamoto, H., 2012, Effects of sodium thiosulphate on chalcopyrite and tennantite: An insight for alternative separation technique, Int. J. Miner. Process., 102–103, 116–123

Prasetya, A., Mawadati, A., Putri, A.M.R., and Petrus, H.T.B.M, 2018, Study on Sumbawa gold ore liberation using rod mill: effect of rod-number and rotational speed on particle size distribution, IOP Conf. Series: Mat. Sci. Eng., 285, 012024

Sudarsono, A.S., 2003, Pengantar Pengolahan dan Ekstraksi Bijih Emas, Departemen Teknik Pertambangan, Institut Teknologi Bandung, Bandung

Subrahmanyam, T.V., Forssberg, E., 1988,Froth stability, particle entrainment and drainage in flotation-A review, Int. J. Miner. Process., 23, 33–53.

Wahyudi, T., 2004, Penambangan dan Pengolahan Emas di Indonesia, PuslitbangTeknologi Mineral dan Batubara, Badan Litbang Energi dan Sumber Daya Mineral, Jakarta

Walkin, C. J., 2009, Sluice Boxing 101, http://ezinearticles.com/?Sluice-Boxing-101&id=2598916, diakses pada tanggal 22 Juni 2018.



DOI: https://doi.org/10.22146/jrekpros.35483

Article Metrics

Abstract views : 8320 | views : 20737

Refbacks

  • There are currently no refbacks.


Bookmark and Share


Copyright (c) 2018 The authors

Creative Commons License
This work is licensed under a Creative Commons Attribution-ShareAlike 4.0 International License.