Disclosed herein is a method for concentrating gold contained in a leach residue obtained in a copper hydrometallurgical process for recovering copper from a copper sulfide mineral to efficiently separate and recover gold from the leach residue. According to the method, a goldbearing copper sulfide mineral is subjected to pressure leaching with sulfuric acid at a temperature higher than 102 ...
• Smelting of copper bearing gravity gold concentrates. Process challenges with conventional processes (2) ... Economically recoverable levels of copper (sulfide ores) –Heap Bioleach of low grade base metal sulfide deposits: ... Results–GoldCopper Concentrate (Cyanide Only) Au, .
Method bacterial oxidation of goldbearing sulfide concentrates in the floor of the treatment of gold,, After reduction of copper concentration less than 100 mg/l there are reduced content of oxidant and acid in leaching solution, thiocarbamide is introduced in it, noble metals are leached, and mainly it is gold.
· High concentration of silver, copper, and cobalt is observed in samples of chalcopyriterich quartz vein samples compared to galenarich quartz vein and sulfidebearing altered rock samples. Lead, zinc, nickel, chromium, and cadmium have low concentrations in all of the bulk samples.
· To be common, sulfide minerals in nature, pyrite and arsenopyrite, are often associated with other metal sulfide ore. At the same time, they are also the carrier minerals of some rare metals such as gold, silver, and platinum group metals [1–3].Pyrite and arsenopyrite are the desired minerals for goldbearing sulfide ore flotation.
Bas et al.  investigated the effect of an ammonia pretreatment before leaching copper sulﬁdebearing gold ore to increase gold extraction at low cyanide concentrations. Gold extraction increased from % (leaching without pretreatment) to % with pretreatment.
Disclosed herein is a method for concentrating gold contained in a leach residue obtained in a copper hydrometallurgical process for recovering copper from a copper sulfide mineral to efficiently separate and recover gold from the leach residue: a goldbearing copper sulfide mineral is subjected to pressure leaching with sulfuric acid at a temperature higher than 102° C. and 112° C. or lower ...
· Flowsheet for treatment of Copper Sulfide ores rich inminerals such as chalcopyrite with gold and silver as well as arsenopyrite. The above flowsheet is designed for the treatment by flotation of copper as chalcopyrite with gold and silver values. The ore, ranging from 6065% silica, with pyrite, arsenopyrite, and calcite with 3 to 4% copper.
Gold is leached at potentials >600 mV vs. Ag/AgCl and recovered from the solution by precipitating it on activated carbon or copper concentrate (Hyvärinen et al. 2004, Haavanlammi et al., 2007b ...
Copper concentrate is the first commercial product of the copper production line and is composed of approximately equal parts of copper, iron and sulfide. Concentrates are the raw material for all copper smelters, which by processing it obtain an impure form of metallic copper, anode or blister copper, which is later used to produce high purity refined copper.
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