Products List

Main conrainer

ammonia leaching of copper ore

Treatment of A Copper Rich Gold Ore by Cyanide

2017 8 25 · Abstract: The treatment of a copper sulphide bearing gold ore by direct cyanide leaching, ammonia pretreatment and ammoniacal cyanide leaching was investigated Dissolution behaviour of gold and copper in these leaching systems was demonstrated

more+

AMMONIUM THIOSULFATE LEACHING OF AN OXIDE

2015 8 11 · oxide gold copper ore rich in cyanide soluble copper was investigated The main objective was to establish the efiect of the relative concentrations of the maio reagents ammonia, Cu 2\ oxygen, and thiosulfate on gold

more+

Eliminating Copper from Gold Ore

2018 10 4 · Copper minerals, even though minor components of precious metal ores, dissolve in these cyanide leaching solutions, consume cyanide, cause fouling of mill solutions, and thus interfere with the precipitation and recovery of gold 2,3,4 Here is a summary of laboratory investigations on the use of cyanide solutions as extractants for copper from

more+

Ammoniacal thiosulphate leaching of gold ore

2016 6 2 · Ammoniacal thiosulphate leaching of gold ore R K Rath, N Hiroyoshi, M Tsunekawa*, T Hirajima concentration and that ratio varies from ore to ore Copper ions act as an oxidant and the gold dissolution Ammonia is a precondition for Au leaching in comparison to thiosulphate alone It is known that gold dissolves slowly

more+

Using Nickel as a Catalyst in Ammonium Thiosulfate

2004 2 18 · For extracting gold from the copper bearing sulfide ore, a higher ammonia and thiosulfate concentrations were required with 0 0001mol/dm3 of Ni2 ammonia, copper and thiosulfate on both gold extraction and Using Nickel as a Catalyst in Ammonium Thiosulfate Leaching for Gold Extraction 517

more+

leaching flow sheet iron ores annapurnaenterprise in

AMMONIA LEACHING IN THE COPPER Get More Info Acid leaching of oxidesulfide copper ore prior Acid leaching of oxidesulfide copper ore prior the flotation the flow sheet for processing of the mixed ores attracts considerable scientific and engineering

more+

Leaching Coarse Native Copper Ore With Dilute

2016 6 7 · Copper was recovered from the leach liquor by solvent extraction and electrolysis of the strip solution Cyclic testing of the leach solvent extraction electrolytic procedure is in progress on a 6 ton charge of minus 12 inch conglomerate type ore assaying 2 2 percent copper

more+

INVESTIGATION OF THE USE OF AMMONIUM ACETATE

2017 2 3 · THE LEACHING OF MALACHITE ORE Solutions containing ammonia allow for selective leaching of copper from a copper ore In this study, the leaching and kinetics of malachite ore were examined using ammonium acetate solutions as an alternative lixiviant The

more+

Ammonia Leaching as a Pre Treatment for the Processing

2015 10 7 · Both column leaching of whole ore and batch stirred tank reactor leaching of milled ore were investigated as pre treatment methods for varying length of process times, and the material was subsequently tested for its flotation behaviour

more+

LEACHING OF MALACHITE ORE IN AMMONIUM

2014 1 11 · Abstract Malachite ore is one of the most important of oxidized copper ores Copper production can be performed by using this ore In this work, the leaching kinetics of malachite in ammonium sulfate solutions was investigated, and metallic copper was recovered by a cementation method from the resulting actual leach solution

more+

A New Heterotrophic Strain for Bioleaching of Low Grade

2016 2 6 · A New Heterotrophic Strain for Bioleaching of Low Grade Complex Copper Ore Kaijian Hu 1,2, Aixiang Wu 1,2,*, Hongjiang Wang 1,2 and Shaoyong Wang 1,2 1 School of Civil and Environmental Engineering, Ammonia has been extensively used as an effective lixiviant in copper leaching Ammonia

more+

The Leaching of Copper Oxide Ore in Ammonium

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

more+

LEACHING OF MALACHITE ORE IN AMMONIUM SULFATE

2015 5 12 · leaching experiments, the effects of reaction temperature, particle size, and stirring speed on copper leaching from malachite ore were studied In the cementation experiments, metallic zinc was used as the reductant

more+

COPPER(II) EXTRACTION FROM AMMONIA LEACH

2013 9 7 · Ammonia leaching of sulfide copper concentrates generate buffer type liquors (pH ranges from 9 to 10), because of the excess of ammonia and significant amount of ammonia sulfate as a leaching

more+

Leaching of Malachite Ore in NH3 Saturated Water

2017 3 14 · In this study, the leaching kinetics of malachite , an oxidized copper ore, was investigated in water saturated with ammonia gas In the experiments, the ammonia concentration of the solution, the particle size of the ore, the temperature, the stirring speed, and the solid to liquid ratio were chosen as parameters

more+

OPTIMIZATION OF LEACHING OF COPPER FROM

2017 6 13 · The effects of leaching parameters, such as ammonia concentration, ammonium sulphate concentration, leaching time, and solid to liquid ratio, were investigated on leaching of copper A 2n factorial experimental design method in the dissolution experiments was used

more+

ammonia leaching of copper batteryrickshaw co in

Ammonia Leaching: A New Approach of Copper Ammonia leaching was first used for recovery of non ferrous metals such as copper from oxide ores or ores containing pure copper, but gradually the use of this technology was developed from more traditional elements of copper, nickel and cobalt to the extractive metallurgy of zinc, cadmium, silver and gold

more+

,Ammonia leaching copper,,,,

2018 10 1 · This experiment study the influence of the oxide copper ammonia leaching by microwave radiating,The result show:microwave radiating has obvious catalysis in the oxide

more+

Tiosulphate Leaching Copper Ammonia

Several research groups have studied goldcopper ores but generally find it difficult to control the extent of copper leaching and the degradation of thiosulphate (D Rabai and Epstein50 report that the fast redox reaction between Cu(II) and thiosulphate is followed by slower side reactions which produce Cu2S (Eq insufficient leaching time

more+

Ammonia Leaching Study on Carbonate Oxidised

The effects of oxidized copper ores which came from Yunnan province were carried out by using ammonialeaching methods in the laboratory In order to seek the optimum leaching conditions under normal temperature and pressure,we conducted a series of validation experiments

more+

Selective leaching of a copper ore by an

A new method of copper extraction from its ore is examined in this paper Based on the electrokinetic processes used for soil remediation, the technique envisaged consists in the copper dissolution by ammonia solution using an electric field

more+

US4165264A Ammonia leaching Google Patents

An improved process for obtaining copper from a copper sulfide, in which: the copper sulfide is treated with oxygen and an aqueous leaching solution of ammonium carbonate, to form a leach liquor which contains ammonia complexes of copper sulfate and copper carbonate; the leach liquor is heated to form gaseous ammonia and carbon dioxide; the leach liquor is treated with a strongly alkaline

more+

Selective leaching of a copper ore by an

A new method of copper extraction from its ore is examined in this paper Based on the electrokinetic processes used for soil remediation, the technique envisaged consists in the copper dissolution by ammonia solution using an electric field

more+

Ammoniacal thiosulphate leaching of gold ore

2016 6 2 · Ammoniacal thiosulphate leaching of gold ore R K Rath, N Hiroyoshi, M Tsunekawa*, T Hirajima concentration and that ratio varies from ore to ore Copper ions act as an oxidant and the gold dissolution Ammonia is a precondition for Au leaching in comparison to thiosulphate alone It is known that gold dissolves slowly

more+

Investigation of Leaching Kinetics of Copper from

2012 4 26 · The leaching and kinetics of malachite, which is an oxidized copper ore, in ammonia containing solutions has been investigated by various researchers Oudenne and Olson studied the leaching kinetics of malachite in ammonium carbonate solutions

more+

ammonia leaching of copper ore

Introduction: With Ammonia Or Ammonium Containing Compound Patents and After leaching of the ore with an aqueous ammoniacal thiosulfate solution, the In the method, a copper bearing material, aqueous ammonia, and a sufficientEliminating Copper from Gold Ore 911 MetallurgistMar 19, 2017 When reviewing Methods of Eliminating Copper from Gold Ores we see The copper and ammonia are

more+

Ammonia Leaching Study on Refractory Oxidised

Ammonia leaching research is carried out on a certain oxidised copper ores The effects of oxidized copper ores which came from Yunnan Province were studied in laboratory in order to find out the optimum leaching conditions under normal temperature and pressure

more+

,ammonia leaching solution,,,,

2018 7 31 · Investigations on increasing recovery of gold for a gold ore containing silver,lead and copper by using ammonia cyanide leaching,some methods enhancing leach gold and the

more+

Ammonia/nitric Acid Leaching of Copper Cobalt

2015 3 4 · during the process This is Abstract The alkaline leaching behaviour of rich copper cobalt oxidised ore from Katanga has been investigated Copper was leached in ammonia/nitric acid solution at room temperature

more+

Ammonia Leaching: A New Approach of Copper

2013 12 10 · Ammonia and ammonium salts have been recognized as effective leaching agents in hydrometallurgical processes due to low toxicity and cost, easy recovery and high selective recovery of metals New research findings on considerable advantages of leaching by

more+

Treatment of copper rich gold ore by cyanide

The treatment of a copper sulphide bearing gold ore by direct cyanide leaching, ammonia pretreatment and ammoniacal cyanide leaching was investigated Dissolution behaviour of gold and copper in these leaching systems was demonstrated

more+