Pressure Leaching Of Copper

Copper pressure leaching process consists of the following main steps: Concentrate repulping Pressure oxidation of sulfides Hot curing Solid-liquid separation Neutralization Copper solvent extraction Copper electrowinning Water balance management and bleed treatment Services Process Training

2 October 25th, 2004 Presentation Outline Safety share Introduction Global copper reserves/resources Phelps Dodge production & reserves profile Commercial drivers for copper concentrate leaching The copper concentrate market and TC/RCs Phelps Dodge copper pressure leaching developments High temperature Medium temperature Critical success

16-06-2020· The complete copper pressure leaching process concept includes pressure leaching in an autoclave to produce copper-containing pregnant leach solution. Leaching is followed by a neutralization step and then copper solvent extraction and electrowinning. Gold and silver can be recovered by adding a lime boil step before cyanide leaching.

01-11-2007· Recycling of lean electrolyte provided all of the acid required to effectively dissolve copper and convert approximately 65% to 70% of the sulfide sulfur to elemental sulfur, resulting in an acid-autogenous process for pressure leaching.

01-05-2021· Medium-temperature pressure leaching of copper sulphides was investigated. • Copper extraction was over 99% at 165 °C at low final acidity (20–26 g/L). • Sulphate formation (depended on T and acidity) increased copper extraction. • Iron hydrolysis removed iron from the solution to levels acceptable for EW. •

Copper pressure leaching process consists of the following main steps: Concentrate repulping. Pressure oxidation of sulfides. Hot curing. Solid-liquid separation. Neutralization. Copper solvent extraction. Copper electrowinning. Water balance management and bleed treatment.

16-06-2020· Leaching is followed by a neutralization step and then copper solvent extraction and electrowinning. Gold and silver can be recovered by adding a lime boil step before cyanide leaching. The Copper Pressure Oxidation Plant is an Outotec proprietary technology for impure concentrate refining.

01-11-2007· Parts I and II in this series of papers presented the chemistry of medium-temperature pressure leaching of copper sulfide concentrates and reviewed the metallurgical development of a process to effectively recover copper using medium-temperature pressure leaching and direct electrow inning (DEW). Key features of the process were the use of

general flowsheet demonstrating the unit operations of pressure oxidation of copper concentrates is shown below in Figure 3. Figure 3: General flowsheet of copper concentrate pressure oxidisation Conclusions Pressure leaching is not a new technology and indeed conventional with over 100 plants constructed and successfully

Pressure leaching of decopperized copper electrorefining anode slimes in strong acid… 467 leaching was conducted for two hours thereafter the autoclave was cooled down to the room temperature and the leach residue were removed for filtration and washing. Experiments were performed as a full factorial test in order to determine the effect of

Abstract. In 2003, a high-temperature pressure leaching circuit to treat copper sulfide concentrates was commissioned at the copper/molybdenum operation at Bagdad, AZ. In late 2007, a medium,

Copper Ore Hydrometallurgy and Pressure Leaching. Copper hydrometallurgy is a branch of metallurgy method to extract copper directly from those difficult-to-concentrate copper oxide ore. Traditional copper hydrometallurgy process typically consists of atmospheric leaching, solvent extraction (SX) and electro-winning (EW).

01-03-2009· The pressure oxidative leaching of lead-containing copper matte is studied systematically. The effects of leaching time, oxygen partial pressure, leaching temperature, agitation speed, acid addition and initial Cu 2+ concentration on the extraction of copper and iron are investigated. The effect of initial Cu 2+ concentration is insignificant compared to the other

LEACHING COPPER SULFIDES A survey of the literature reveals numerous methods which have been proposed for the leaching of copper sulfides. Few of these have been carried beyond the laboratory stage, and none are used commercially to produce metallic copper. Much work is presently being carried out on hydro-

Complex copper-iron bearing sulphides, particularly chalcopyrite, ground to at least 90 percent minus 325 mesh standard Tyler screen are leached in aqueous sulphuric acid solution containing less acid than that required to combine with the copper content of the sulphides as copper sulphate. Leaching is continued at a temperature within the range of 210* F. to 250* F. under

Copper pressure leaching process consists of the following main steps: Concentrate repulping. Pressure oxidation of sulfides. Hot curing. Solid-liquid separation. Neutralization. Copper solvent extraction. Copper electrowinning. Water balance management and bleed treatment.

Pressure leaching of decopperized copper electrorefining anode slimes in strong acid… 467 leaching was conducted for two hours thereafter the autoclave was cooled down to the room temperature and the leach residue were removed for filtration and washing. Experiments were performed as a full factorial test in order to determine the effect of

Copper Ore Hydrometallurgy and Pressure Leaching. Copper hydrometallurgy is a branch of metallurgy method to extract copper directly from those difficult-to-concentrate copper oxide ore. Traditional copper hydrometallurgy process typically consists of atmospheric leaching, solvent extraction (SX) and electro-winning (EW).

pressure ranges in the present study have been selected as 100 ~ 185 °C and 5 ~ 15 atm of oxygen partial pressure. 3 • 2 Leaching of low-grade MoS2 concentrate in water The effect of the solid : liquid ratio on copper, iron and molybdenum pressure leaching from the low-grade molybden-ite concentrate in water is shown in Fig. 2. The existence,

Copper sulphide Pressure leaching Valorisation ABSTRACT Copper sulphide rich leach residue from nickel refining is a marketable product and may be treated by smelting.

19-05-2016· The topicality is shown to improve the processing technology of complex polymetallic raw material containing a considerable amount of toxic impurities of arsenic and lead. Results on pressure leaching the mattes formed after reduction smelting the dusts of OAO Sredneural’skii Copper Smeltery (SUMZ) by solutions of copper sulfate are discussed.

DOI: 10.1007/BF03403186 Corpus ID: 106226805. Copper concentrate pressure leaching — plant scale-up from continuous laboratory testing @article{Brewer2004CopperCP, title={Copper concentrate pressure leaching — plant scale-up from continuous laboratory testing}, author={R. E. Brewer}, journal={Mining, Metallurgy \& Exploration}, year={2004}, volume={21},

copper sulphide leaching options as alternatives to the more conventional pyrometallurgical processing route of copper sulphides. Three copper sulphide leaching and refining processes are discussed: total pressure oxidation, ferric sulphate leaching and copper chloride leaching. The effect of mineralogy

DIRECT PRESSURE LEACHING OF COPPER-IRON SULPHIDES - SHERRITT GORDON MINES LTD. Title: DIRECT PRESSURE LEACHING OF COPPER-IRON SULPHIDES. United States Patent 3637371. Abstract: Complex copper-iron bearing sulphides, particularly chalcopyrite, ground to at least 90 percent minus 325 mesh standard Tyler screen are

Stiksma, J. et al., Process Development Studies by Dynatec for the Pressure Leaching of HBM&S Copper Sulphide Concentrates, Proceedings of Solid/Liquid Separation, 29 th Annual Hydrometallurgical,