chloride leaching copper
Chloride to sulfate mass ratio Practical studies in
The effect of the chloride to sulfate mass ratio (CSMR) on lead leaching from 5050 leadtin solder galvanically coupled to copper in stagnant conditions was examined using bench scale testing and data from water utilities.
Effect of Chloride Ions on Leaching Rate of Chalcopyrite
Hiroyoshi and co workers reported that the leaching rate of chalcopyrite could be accelerated by the addition of silver ions. the high leaching rate zone becomes broader and the critical potential (Ec) increases as the chloride concentration increases. cuprous ion species such as
Copper leaching from chalcopyrite concentrate in Cu(II)/Fe
This study was conducted to develop a novel process for copper recovery from chalcopyrite by chloride leaching, simultaneous cuprous oxidation and cupric solvent extraction to transfer copper to a conventional sulfate electrowinning circuit, and hematite precipitation to reject iron.
Ferric Chloride Leaching 911metallurgist
The copper concentration of corroding grade lead must be less than 15 ppm therefore, the copper in the lead chloride should not be more than 20 ppm (Fleck, 1983). As shown in Figure 6, the copper in the leaching solution must be maintained below 20 g/L to meet the
Copper chloride leaching from chalcopyrite and bornite
This study was conducted as part of the development of a novel process for copper recovery from copper sulfide concentrates by chloride leaching, simultaneous cuprous oxidation and cupric solvent extraction to transfer copper to a conventional sulfate electrowinning circuit, and hematite precipitation to reject iron.
Lead Leaching And Faucet Corrosion In PVC Home Plumbing
Plumbing systems with polyvinyl chloride plastic pipes could be more susceptible than copper pipes to leaching of lead and copper into drinking water, researchers report.
(PDF) Leaching of chalcopyrite in cupric chloride solution
The reasons for using of chlorine ions can be listed as follows to provide high redox potential, catalytic effect and, to generate soluble copper compounds.
Copper leaching from chalcopyrite concentrates SpringerLink
Abstract. Chalcopyrite (CuFeS 2) is one of the most abundant copper bearing minerals, which accounts for approximately 70 percent of the worlds known copper reserves.For more than 30 years, a significant number of processes have been developed to leach copper from chalcopyrite concentrates.
The Leaching of Copper Oxide Ore in Ammonium Chloride Solution
In this study, the leaching effect of copper oxide ore was investigated using ammonium chloride solution as leaching agent. The effects of temperature, concentration of ammonium chloride, average particle size and stirring speed on the leaching of copper oxide ore were investigated.
NICKEL MATTE CHLORIDE LEACHING outotec
This latest solution, the Outotec Nickel Matte Chloride Leaching Process, is suitable for nickel rening and is a highly exible, calcium chloride based processing route Copper is puried from the process solution by solvent extraction, using conventional hydroxyoxime based copper
ammonia ammonium chloride leach copper minerals
Nov 06, 20120183;32;leaching of copper from tailings using ammonia/ammonium chloride . Leaching of copper from tailings using ammonia/ammonium chloride for leaching of different copper minerals. 13,14 The The Ammonia Leach for Copper
CHLORIDE HYPOCHLORITE OXIDATION AND LEACHING OF
Chloridehypochlorite oxidation and leaching of refractory sulfide gold concentrate 63 Fig. 1. The Pourbaix diagram of FeS at [Fe] = 10 4 M, [S] = 10 M and 25 C (the chlorine species regions are also marked) (Marsden and House, 2005) Fig. 2.
The leaching of chalcopyrite with ferric chloride
The Leaching of Chalcopyrite with Ferric Chloride TETSUJI HIRATO, MAKOTO KINOSHITA, YASUHIRO AWAKURA, and HIROSHI MAJIMA A comparative study of electrochemical leaching and chemical leaching of chalcopyrite was done to
Cu Leaching Using Regenerated Ferric Sulphate
LEACHING OF SECONDARY COPPER MINERALS USING . REGENERATED FERRIC SULPHATE. C.J. FERRON SGS. ABSTRACT . Secondary copper minerals such as chalcocite (Cu. 2. chloride, has been shown to significantly improve the kinetics of the chalcocite dissolution, increasing the rate .
CAUSES OF COPPER CORROSION IN PLUMBING
A Review of Current Knowledge CAUSES OF COPPER CORROSION IN PLUMBING SYSTEMS FR/R0007 Third Edition September 2017 Second Edition September 2010
Copper(II) chloride is the chemical compound with the chemical formula CuCl 2. This is a light brown solid, which slowly absorbs moisture to form a blue green dihydrate. The copper(II) chlorides are some of the most common copper(II) compounds, after copper sulfate.
Recent Developments in Copper Hydrometallurgy
2 169;2006 Phelps Dodge Corporation Outline Safety Historical context Solution extraction and electrowinning Atmospheric leaching ySecondary sulfides yPrimary sulfides
copper processing Definition, History, Facts
Copper processing, the extraction of copper from its ores and the preparation of copper metal or chemical compounds for use in various products. In its pure form or as an alloy, copper (Cu) is one of the most important metals in society.
Leaching of Primary Copper Sulfide Ore in Chloride Ferrous
Abstract Copper extraction from primary copper sulde ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride
Heap Leach Mining's breakthrough technology
Copper Heap Leaching (Solvent Extraction Electrowinning SX EW) In 2014, more than 50 major HL SX EW operations worldwide recovered approx. 3 million tonnes of copper, which represents roughly
Bioleaching vs. Chloride Leaching Real Advantages and
Therefore, several technologies have been developed in order to achieve an efficient copper extraction from copper sulfides. Among these developments, the hydrometallurgical options of bioleaching as well as chemical chloride leaching are prevailing for secondary copper sulfides due to their good results at lab, pilot and industrial scale.
FERRIC CHLORIDE OF THE DELTA SULFIDE
proposed flowsheet, the ores are mated by single and two stage ferric chloride leaching to dissolve zinc, lead, copper and silver. The leach residue is eeated for gold recovery while the leach liquor will be directed to lead, copper, silver and zinc recovery steps.
Big Guns in Copper Conc Leaching Race
Finally, the processes using some form of halide leaching include Intec Process Involves a chloride/bromide solution leach at 85C and atmospheric pressure. Impurities are precipitated with lime. Silver is precipitated with mercury, and then produced as a chloride for further processing. High purity copper is electrowon in a special cell.
Permeation Leaching US EPA
Permeation Leaching Increased VOC content of distributed water2 Increased lead and copper levels1 Vinyl Chloride formation2 Increased asbestos levels1 Aesthetic issues (taste, odor, film formation) Increased organic contaminants from PE pipe2 Increased metals levels from cement pipe or linings2
Redox potential dependence of chalcopyrite
leaching in chloride acid solutions (Yoo et al., 2010). Therefore, redox controlled leaching using chloride acid is an attractive alternative as a high rate chalcopyrite
Chloride as an Alternative to Cyanide sgs
(~5 10 g/L) of sodium chloride to the autoclave. the copper leaching conditions, cyanide consumption can be prohibitively high unless soluble copper ions are very efficiently washed from the solids and other cyanide consuming species (such as elemental sulphur) are efficiently
Corrosion and Leaching of Copper Tubing Exposed to
The leaching of lead and copper from plumbing materials is a source of metals in drinking water and is a public health concern. This work investigated the influence of free chlorine (HOCl/OCl ) on the level of copper in water in contact with the solid metal, and proposed an oxidation dissolution
CA2651516C Chloride heap leaching Google Patents
A heap leaching method to recover copper from a primary copper sulphide mineral wherein the mineral is leached in an acidic chloride or mixed chloride/sulphate solution in the presence of oxygen with the surface potential of the mineral below 600 mV (vs. SHE) to cause dissolution of the copper sulphide.
Heap leaching is an industrial mining process to extract precious metals, copper, uranium, and other compounds from ore via a series of chemical reactions that absorb specific minerals and then re separates them after their division from other earth materials.
Leaching of Copper Sulphides SAIMM
copper chloride leaching are carried out at atmospheric pressure while total pressure oxidation takes place at elevated pressures. Hydrometallurgical processing routes may be sought for a number of reasons as alternatives to more conventional pyrometallurgical processing (Dreisinger, 2006). In general, the selection of a