Open AccessThe Efficiency of Amalgamation and Cyanidation for the Extraction of Placer Gold Deposits of Indus River Basin along Gilgit to Thalachi (Gilgit-Baltistan)
Author(s) -
M. S. Alam,
Javed Akhter Qureshi,
Garee Khan,
Manzoor Ali,
Irfan Ali,
Naeem Abbas
Publication year - 2019
Publication title -
international journal of economic and environment geology
Language(s) - English
Resource type - Journals
ISSN - 2223-957X
DOI - 10.46660/ijeeg.vol10.iss2.2019.274
Subject(s) - gold cyanidation , placer mining , gold mining , geology , gold extraction , mining engineering , extraction (chemistry) , bottle , environmental science , metallurgy , geochemistry , archaeology , cyanide , chemistry , materials science , geography , chromatography
Separation of gold from placers are not given importance in Pakistan, but in the economy of Gilgit-Baltistan,it plays a vital role. The study mainly focused on shaking table technique for the extraction of gold from placer depositsalong Gilgit river between Gilgit and Thalachi, near Gilgit and Astore river junction. For the separation of gold, fromthe concentration of shaking table the Hg; mercury amalgamation has been used for it. In the result of theamalgamation process recovered gold was 27.12%. The cyanidation process was used to separate from remains ofmercury amalgamation, tailing and middling of shaking table. The graphical results of gold extraction with bottle rollcyanidation and agitation method were compared. The results of gold separation using bottle roll cyanidation andagitation methods were about 87.5% and 29.8% respectively. It is clear from the results, the bottle roll cyanidation is abetter technique for the separation of fine gold from placers along with downstream waterway areas, where placerdeposits occur.