The results of pilot-plant tested ammoniacal-cyanidation of gold recovery from copper gold-bearing ore are presented in this paper. This ore is from a deposit of Russian Federation with gold and copper grade 9.5g/t and 0.4 per cent, respectively._x000D_
Copper is largely present as malachite and azurite. The presence of chalcopyrite and bornite is also observed._x000D_
In order to recover gold, gravity is recommended. Two options of ammoniacal-cyanidation using leaching of gravity tails, CIP and filtration, were tested. It was found that ammoniacal-cyanidation using filtration of leaching tailings and recycled solutions is the most optimal option. The proposed flow sheet provides for 89.7 per cent gold recovery from gravity tailings at the consumption of NaCN 0.9 kg/t and (NH4)2CO3 7.5-9 kg/t. Compared to conventional cyanidation, this technology decreases the consumption of sodium cyanide from 4 up to 0.9 kg/t at the same gold recovery._x000D_
It can be recommended for the treatment of copper gold-bearing ores with the similar composition._x000D_
CITATION:Khmelnitskaya, O, Voiloshnikov, G and Lodeischikov, V, 2010. Pilot-plant testing of ammoniacal-cyanidation for gold recovery from copper gold-bearing ore, in Proceedings XXV International Mineral Processing Congress (IMPC) 2010, pp 345-350 (The Australasian Institute of Mining and Metallurgy: Melbourne).