leaching of gold from copper rich ores

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leaching of gold from copper rich ores

Industrial Application of Ammonia Assisted Cyanide ...

metal ores (<1% copper, <1g/ton gold, < 0.5% nickel) previously considered uneconomical, became feasible with introduction of heap leaching technologies (Marsden, 2009). In consideration of ore types, a generalized diagram showing the applicable ore beneficiation

(PDF) Treatment of a Copper-Rich Gold Ore by Ammonia ...

ore body at Gedabek is a complex copper-gold porphyry deposit. Ore from the Gedabek mine, which initially was mainly oxidic in nature, was treated by cyanide heap leaching to produce a pregnant leach liquor, from which gold was extracted by fixed-bed resin ion exchange. Resin ion exchange was used at

In Situ Leaching Of Copper Ores

the best leaching efficiency for copper, in their feasibility of copper leaching from an industrial sludge using ammonia solution. This present work will develop the effect of nitric acid/ammonia ratio on the leaching of rich - cobalt copper oxidised ore. It will also evaluate the effect of key parameters

leaching of gold from copper rich ores

4 Silver-rich ores Gold commonly occurs as electrum, although kustelite may be present in some ores. Native silver may be present. Rochester, Candelaria and Tombstone (USA), La Coipa (Chile) 5 Copper sulfide ores Gold occurs as coarse liberated particles and fine particles locked in pyrite and copper …

Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore

BacTech Enviromet Corp., in conjunction with Mintek, 14 has developed proprietary technologies for the high temperature leaching of copper concentrates. Working in conjunction with Industrias Penoles SA de CV, one of Mexico's largest and most diverse mining companies, they operated a 2.2-metric tons per day (mt/d) stirred-tank copper-concentrate bioleach demonstration plant in Monterrey ...

Gold and copper leaching from gold-copper ores and ...

Heap leaching is an industrial mining process used to extract precious metals, copper, uranium, and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials. Similar to in situ mining, heap leach mining differs in that it places ore on a liner, then adds the chemicals via drip systems to the ...

leaching of gold from copper rich ores

Copper processing is a complicated process that begins with mining of the ore (less than 1% copper) and ends with sheets of 99.99% pure copper called cathodes, which will ultimately be made into products for everyday use.The most common types of ore, copper oxide and copper sulfide, undergo two different processes, hydrometallurgy and pyrometallurgy, respectively, due to the different ...

AMMONIACAL THIOSULPHATE LEACHING OF A COPPER …

the effect of copper on leaching of gold ore. the leaching and adsorption behaviour of gold ores kevin lee rees 44 the effect of copper cyanide on gold leaching from oxide and sulphide ores 110 01/09/; Factors affecting the leaching process of gold ore 21 Effect of Ore Property This is because the reactionics of oxygen is detrimental to the.

Establishing thE ProcEss MinEralogy of gold orEs

Copper minerals present difficulties during the cyanide leaching of gold ores leading to excessively high consumption of cyanide (and oxygen) coupled with low extraction of gold. Copper cyanide species, if present at high levels, adversely affects

A Brief Note on the Heap Leaching Technologies for the ...

When reviewing Methods of Eliminating Copper from Gold Ores we see that several methods have been suggested to eliminate copper from ores prior to cyanidation. Preliminary extraction of the copper with sulphuric or sulphurous acids may be applicable to ores containing oxidized copper minerals such as malachite, azurite and chrysocolla but these acids have but little effect on sulphide copper ...

Towards industrial implementation of glycine-based leach ...

In this current study, the extraction of gold from a high grade copper-rich gold ore by copper-assisted ammoniacal thiosulphate leaching was studied by adopting Taguchi L 9, (3 3) experimental ...

HEAP LEACHING TECHNIQUE in MINING

Jun 24, 2020· The oxidation of sulfide-based ores is industrially relevant as it facilitates the extraction of valuable metals and eliminates undesired elements from an ore. Even though oxidation can be done thermally (pyrometallurgy), solution-based (hydrometallurgical) methods are currently sought as they represent a more sustainable option. Here, the leaching of a sulfide ore (32% Fe, 2% Cu) is ...

Treatment of A Copper-Rich Gold Ore by Cyanide Leaching ...

the Refugio mine relative to other gold and copper mines in the region. The Maricunga mine produces 45,000 - 52,000 t/day of gold bearing ores from . the Verde Open pit, with ore gold grades ranging from 0.6 - 1.0 g/t and copper levels of 0.05% - 0.1%. The operations flowsheet is schematically given in Figure 2. Blasted ore is trucked from the

Eliminating Copper from Gold Ore

Keywords Refractory ores, bacterial leaching, effect separation scheme INTRODUCTION In this work the bacterial leaching of an ore rich in copper, gold and silver is studied. Heap Leaching of Gold and Silver Ores - YouTube. Nov 12, 2015· Heap leaching is the process to extract precious metals like gold, silver, copper etc, from their ore by ...

leaching iron gold ore

Copper Ore Carbonate Leaching Process. Amino acids key to new gold leaching process Oct 24, 2014 In normal gold leaching you would leach with cyanide and then absorb the gold cyanide on to a carbonate leach carbon-in-pulp. copper-gold ores, by staging the In normal gold leaching you would leach with cyanide and then absorb the gold cyanide on to a carbonate leach carbon-in-pulp. copper-gold ...

Leaching of a pyrite-based ore containing copper using ...

USA US418324A USA USA US A US A US A US 418324 A US418324 A US 418324A US A US A US A US A US A US A Authority US United States Prior art keywords copper cyanide ore hcn recovery Prior art date Legal status (The legal status is an assumption and is not a legal …

Conference Proceeding: TREATMENT OF A COPPER -RICH GOLD ...

In this study, ammoniacal cyanide leaching of gold for the treatment of a copper-rich refractory gold ore was investigated. Ammonia leaching as a process ahead of cyanidation was also examinedpretreatment . Some additives were testedto reduce the copper interferences. Direct cyanide leaching of gold was carried out for comparison.

AMMONIACAL THIOSULPHATE LEACHING OF A COPPER-RICH …

Heap leaching is a low-cost technology used in industrial mining to recover precious metals such as gold and uranium, along with several other highly sought after metals like copper, from their primary resources (ores and minerals). For many decades, there has been a growing demand for heap leaching due to its environmental benefits. Heap leaching provides mining operators with a benign ...

GLYCINE AS A LIXIVIANT FOR THE LEACHING OF LOW GRADE ...

Copper-gold ores (oxides: Cu-Au ore A, sulfides: Cu-Au B and Cu-Au C) leaching in alkaline glycine solution that, Cu and Aurevealed simultaneously leach from both ore types. However, Cu leaches faster than gold.

Leaching Stubborn Oxidized Gold Ores That Contain Copper ...

(PDF) Treatment of a Copper-Rich Gold Ore by … treatment of a copper- rich gold ore by ammonia assisted cyanide leaching Figure 7. Effect of ammonia pretreatm ent (1 M NH 3 ) and the addition of ammonia (0.5-1 M NH 3 ) on the. Get Price

Conference Proceeding: TREATMENT OF A COPPER -RICH GOLD ...

Therefore, ammoniacal cyanide leaching of a copper sulphide-rich, high grade gold ore was investigated using Box-Behnken experimental design to demonstrate the significance of main and interaction effects of concentrations of NH3, NaCN and Pb(NO3)2 on the extraction of gold and copper, selectivity and cyanide consumption.

leaching iron gold ore

the best leaching efficiency for copper, in their feasibility of copper leaching from an industrial sludge using ammonia solution. This present work will develop the effect of nitric acid/ammonia ratio on the leaching of rich - cobalt copper oxidised ore. It will also evaluate the effect of key parameters

Ammonia/nitric Acid Leaching of Copper- Cobalt Oxidized Ore

Feb 01, 2015· Fig. 1 XRD profile of copper-rich gold ore sample Fig. 2 Sulphides of copper and other metals identified by SEM analysis of flotation concentrate produced from ore for mineralogical analysis 2.2 Leaching tests Leaching tests were conducted in baffled glass reactors (1000 mL in nominal capacity) into which leach solutions (480 mL) and the ore ...

Copper Mining and Processing: Processing of Copper Ores ...

Gold Ore Processing Leaching Polrecreatienl. Other articles where Heap leaching is discussed gold processing Cyanidation extracting gold from lowgrade ores heap leaching is practiced. The huge heaps described above are sprayed with a dilute solution of sodium cyanide and this percolates down through the piled ore dissolving the gold.

The Case for Glycine Heap Leaching

Keywords Refractory ores, bacterial leaching, effect separation scheme INTRODUCTION In this work the bacterial leaching of an ore rich in copper, gold and silver is studied. Heap Leaching of Gold and Silver Ores - YouTube. Nov 12, 2015· Heap leaching is the process to extract precious metals like gold, silver, copper etc, from their ore by ...