Pemurnian Batuan Emas Ramah Lingkungan Menggunakan Teknik Sink and Flotation dengan Media Tribromometana

Setyoningrum, Tutik Muji and Murni, Sri Wahyu and Haryono, Gogot and Maslakhah, Rizki and Murti, Riris Indra (2020) Pemurnian Batuan Emas Ramah Lingkungan Menggunakan Teknik Sink and Flotation dengan Media Tribromometana. In: Prosiding Seminar Nasional Teknik Kimia “Kejuangan” Pengembangan Teknologi Kimia untuk Pengolahan Sumber Daya Alam Indonesia, 14-15 juli 2020, UPN "Veteran" Yogyakarta.

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Abstract

Separation of gold from its ore by sink and float method with tribromomethane as a medium is considered
economical and environmentally friendly due to the absence of Mercury used in the process. The sink and float
technique is based on the specific gravity difference among each constituents. The ore was initially cleaned,
washed, crushed and then sieved to obtain various powder sizes, equivalent to 20, 50, and 80 mesh size. The
characterization was performed by means of XRD and XRF analysis to determine the initial gold content.
Afterward, the ore were processed by using 300 ml tribromomethane, so that two phases, namely the sinking
and floating phase, will be formed. Each phase was then undergone weighing, drying and purifying or
destructuring by using aqua regia. The results show that the optimum yield of 5.87403% with a gold content
(Au) of 0.25976%, was obtained in the sinking phase for 80 mesh size with 3 M tribromomethane concentration
and in the floating phase having 0.000001756% with gold content of 0 .0000001568%.
Keywords: sink and float, tribromomethane, aqua-regia

Item Type:	Conference or Workshop Item (Paper)
Uncontrolled Keywords:	sink and float, tribromomethane, aqua-regia
Subjects:	T Technology > TP Chemical technology
Depositing User:	Dra., M.T SRI WAHYU MURNI
Date Deposited:	18 Oct 2022 08:12
Last Modified:	18 Oct 2022 08:12
URI:	http://eprints.upnyk.ac.id/id/eprint/31394

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