THE EFFECT OF GRAIN SIZE AND CYANIDE CONCENTRATION ON AGITATION LEACHING ON THE PERCENT RECOVERY OF GOLD SLUICE BOX TAILINGS AREA OF BATU SOPANG EAST KALIMANTAN

Wahyuningsih, Tri and Probowati, Dyah and Amalia, Yasmina and Mulyadi, Ari and Prathama, Chandra Yoga (2024) THE EFFECT OF GRAIN SIZE AND CYANIDE CONCENTRATION ON AGITATION LEACHING ON THE PERCENT RECOVERY OF GOLD SLUICE BOX TAILINGS AREA OF BATU SOPANG EAST KALIMANTAN. In: International Conference on Advanced Research in Engineering and Technology, 2022, -.

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Abstract

Tailing sluice box still contains 4.96 gpt of gold. Samples were taken for XRD
and SEM-EDX testing.The XRD test results show that quartz is the dominant mineral,
followed by clay and feldspar. Quartz mineral content is 46.87%, clay mineral content is
17.76% and feldspar mineral content is 27.80%. The clay mineral content which tends to
be high affects the leaching process which makes the reaction take longer. The results of
the diagnostic leach test using HCl solution and cyanide solution resulted in 39% Au gain.
The results of the HCl pretreatment on the tailings grain size -150, -200, and -270 mesh
got Au gain percentage of 23.6%, 29.6%, 44%. Tailings leaching with variations in cyanide
concentrations of 500 ppm, 750 ppm and 1000 ppm resulted in gold recovery of 0.8%,
5.8%, and 7.8%. The highest gold gain was at -270mesh size and 1000ppm cyanide
concentration with 72 hours leaching time.

Item Type:	Conference or Workshop Item (Speech)
Subjects:	T Technology > TN Mining engineering. Metallurgy
Divisions:	Faculty of Engineering, Science and Mathematics > School of Engineering Sciences
Depositing User:	S.T, MT YASMINA AMALIA
Date Deposited:	07 Jun 2024 02:14
Last Modified:	07 Jun 2024 02:47
URI:	http://eprints.upnyk.ac.id/id/eprint/39649

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