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Acid leaching of oxide–sulfide copper ore prior the ...

453 Acid leaching of oxide–sulfide copper ore prior the flotation – A way for an increased metal recovery Miroslav D. Sokić1, Vladan D. Milošević1, Velizar D. Stanković2, Vladislav Lj.Matković1, Branislav R. Marković1 1Institute for Technology of Nuclear and Other Mineral Raw Materials, Belgrade, Serbia 2University of Belgrade, Technical Faculty, Bor, Serbia

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Agitated Copper Leaching & Cementation Process

Copper Agitated Leaching and cementation process of copper problem: The treatment of copper ores, both oxides and sulfides by means of flotation, hydrometallurgy or other processes has been well established for many years. Flotation has been applied generally to the treatment of sulfide ores, both in small and large scale operations.

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US10563287B2 - Leaching copper-containing ores - Google ...

copper ore leaching Prior art date Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.) Active Application number US16/230,150 Other versions US20190127822A1 (en Inventor Ralph Peter Hackl Paul ...

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(PDF) A STUDY OF LEACHING OF COPPER OXIDE ORE BY SULPHURIC ...

Mexican copper ore is a mixed ore containing mainly copper oxide and some copper sulfide that responds well to flotation. The joint techniques of flotation and leaching were studied.

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A-Z of Copper Ore Leaching - ALTA Metallurgical Services

nickel laterites, copper ore leaching, uranium ore processing, copper SX-EW, heap leaching and solvent extraction. ALTA conferences. are a world-class annual metallurgical conference and a leading platform for innovation. It comprises five international conferences, panel …

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US6569391B1 - Heap leaching copper ore using sodium ...

The heap leaching of copper bearing ores is improved by using sodium nitrate as an oxidizing chemical reactive in a sulphuric acid leaching solution. In particular, the ore is crushed to <6 mm and stored in heaps less than twelve meters high. The heaps are irrigated with a dilute solution consisting essentially of sulphuric acid and sodium nitrate to produce a leach product.

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Use of Bioreactors in the Leaching of an Oxidized Copper Ore

Copper recoveries using two methodologies of acid leaching of a low-grade ore are reported in this work. The ore, abounding in oxidized species, was from Barda González reservoir in Neuquén province, Argentina. In the first methodology, cells of

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Innovations: Introduction to Copper: Mining & Extraction

The techniques for extraction of copper from oxidized ores are quite different from those employed for the sulfide ores. The oxidized ores, consisting of the silicates, carbonates and sulfates, are treated by several methods, all involving some form of leaching of the crushed ore with sulfuric acid to produce impure solutions of copper sulfate.

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Copper Leaching Method

Extraction of copper from suitable ore by leaching methods is generally assumed to cost less than the combined expense of concentration, smelting, and refining, and experimental data tend to confirm this opinion. At the Butte-Duluth plant, which is handling in excess of 100 tons of oxidized ore daily, the copper is said to cost $0.085 per pound.

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Investigation into the heap leaching of copper ore from ...

Abstract Heap leaching of malachite–atacamite ores with high silica gangue using sulphuric acid is reported. The base metals were present in the ores in copper rich nodules with a network of fine strings rich in cobalt and manganese along the quartz grain boundaries. It was observed that leaching of copper was quicker and the corresponding recovery of copper was consistently higher when the ...

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Copper recovery using leach/solvent extraction ...

leaching of high-grade copper oxide ore followed by EW of copper from the leach solution, produced low quality copper cathode at relatively high cost. In 1968 the tonnage of high-grade oxide ores was decreasing and vat leaching was on the decline. The second process, heap and dump leaching of low-

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Copper extraction - Wikipedia

Sulfide ores. Secondary sulfides – those formed by supergene secondary enrichment – are resistant to sulfuric leaching.These ores are a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals, dominantly chalcocite but other minerals such as digenite can be important in some deposits.. Supergene ores rich in sulfides may be concentrated using ...

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Ammonia Leaching: A New Approach of Copper Industry in ...

Copper leaching from ore using ammonia should be followed by selective extraction of copper using the extraction agent in the solvent extraction process. LIX63 was the first extraction agent used in this field. The low extraction capacity of this extractor for copper transfer from the acidic solution led to studying its extraction capability ...

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TENORM: Copper Mining and Production Wastes | US EPA

There are two main leaching methods: heap leaching and in-situ leaching. Heap leaching is the most common method used in the U.S. When processing copper through heap leaching, vast quantities of ore and overburden overburdenSoil and rocks that have been moved out of the way to get to ore are called "overburden." In areas where there are high ...

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LEACHING OF LOW-GRADE COPPER ORES: A CASE STUDY …

The changes in copper content in the ore with the time of exploitation at the RTB mines [9] Oxide copper ore, mixed oxide-sulphide ores and low-grade copper sulphide ore, which, for economic reasons, cannot be enriched by flotation, may be processed by leaching methods. Agents for leaching copper

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Recovery of Copper by Solution Mining Methods

leaching of copper-bearing ores in the U.S The dissolved copper recovered by this operation was derived from the natural oxidation and leaching of sulfide mineralization in a major porphyry copper deposit located in the headwaters of Bingham Creek. This is the present site of the large-scale, open pit operation at Bingham Canyon, which

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Leaching of Primary Copper Sulfide Ore in Chloride-Ferrous ...

Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The study focused on whether this chemical leaching system could be applied at an industrial scale. Leaching tests were conducted in columns loaded with approximately 50 kg of agglomerated ore; the ...

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Bio-processing of a saline, calcareous copper sulfide ore ...

Leaching kupferschiefer with water removed most of the halite from the ore, and incorporating this stage (Phase 0) ahead of an acid-leaching stage (Phase I, which removed most of the residual chloride) was effective in desalinating the ore sufficiently ahead of the critical indirect bioleaching Phase II. Indirect bioleaching of the ore would ...

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Acid Leaching - Copper Ore Treatment Method

This study is limited in general to percolation leaching as it is the most widely used method to give proper contact of solvent with the ore to effect extraction of the copper. One of the important factors in percolation leaching is the size reduction necessary for copper …

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Copper Mining and Extraction: Oxide Ores

1. Crushed ore is carefully dumped into a leakproof lined valley created in an open pit mine. Crushed ore in the leach pad. The pregnant leach pond is in the distance. The crushed ore rests on a leak-proof membrane to protect the underlying ground and prevent the acid and copper …

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Copper Mining and Processing: Processing Copper Ores ...

Gold-copper ores: gold-copper oxides. The gold extraction from leaching gold-copper oxides ore, containing 12.9 ppm gold and 0.04% copper, has been studied. The copper in such ore is present at nuisance levels, meaning that copper presence adds additional cost for treatment without bringing any additional revenue.

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(PDF) Dissolution Kinetics of Malachite in Ammonia ...

The leaching of oxide copper ore containing malachite, which is the unique copper mineral in the ore, by aqueous ammonia solution has been studied. The effect of leaching time, ammonium hydroxide ...

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Leaching kinetics and predictive models for elements ...

The copper oxide ore sample used for the experiments was obtained from the Katanga province, D.R. Congo. Commercial grade reagent, 98% H 2 SO 4 was used for the leaching tests. The sample was subjected to particle size distribution analysis which indicated that the ore sample had a P80 particle diameter of 62.23 µm.

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Chapter 6 Copper Production Technology

Copper ores 0.2-6.0 Copper ore, other minerals, waste rock0.2-6.0 (gangue) Copper minerals,b iron and other metallic0.5-6.0 pyrites, byproducts, andgangue Solution of copper and leaching agent20-50 (water orHAO.) Copper, iron (0.2-2.00/0), trace amounts of85-90 silica and aluminum oxides, and oxygen Organic solvent and pregnantIeachate; 25-35

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(PDF) LEACHING OF A ROASTED COPPER SULFIDE ORE | …

LEACHING OF A ROASTED COPPER SULFIDE ORE Rosselle Kim P. Castillano, Wilfredo T. Gatdula Jr., Gin Derick L. Magno, Jhunalyn H. Parantar METE 157N: HYDROMETALLURGY LABORTORY ABSTRACT Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition.

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

Gold-copper ores: gold-copper oxides. The gold extraction from leaching gold-copper oxides ore, containing 12.9 ppm gold and 0.04% copper, has been studied. The copper in such ore is present at nuisance levels, meaning that copper presence adds additional cost for treatment without bringing any additional revenue.

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(PDF) Cyanide Leaching of Copper-Gold-Silver Ores

Arcadis from gold, copper, and gold-copper ores leaching projects. The Case S tudy was defined, and the flow di agram and process design cri teria were selected for each process.

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Microbial leaching - Online Biology Notes

Uranium leaching: Although less uranium than copper is obtained by microbial leaching, the uranium process is more significant economically. Because a thousand tons of uranium ore must be handled to obtain one ton of uranium, in-situ microbial leaching is gaining greater acceptance, since it eliminates the expense of moving such vast amounts of ...

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US5223024A - Hydrometallurgical copper extraction process ...

A process for the extraction of copper from a copper ore or concentrate comprises first subjecting the ore or concentrate to agitation leaching at an elevated temperature and pressure in the presence of oxygen and water to obtain a resulting acidic leach liquor which contains dissolved copper. The acidity of the resulting acidic leach liquor is then reduced by affecting percolation leaching of ...

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Acid leaching of a copper ore by sulphur-oxidizing ...

A maximum of 88% copper extraction was obtained after 9 weeks of leaching when 13.3 kg S o was added/t ore. This approach to leaching of copper ores that contain appreciable acid-soluble copper may be applicable where transportation of sulphuric acid is hazardous or expensive and a local supply of elemental sulphur is available.

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Copper Ore Hydrometallurgy and Pressure Leaching-Copper-

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).

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(PDF) Acid leaching of a copper ore by sulphur-oxidizing ...

This study examines the potential for use of biogenic sulphuric acid for leaching of a low-grade Brazilian ore containing 0.64% copper occurring as brochantite, Cu 4 SO 4 (OH) 6, and as malachite, Cu 2 CO 3 (OH) 2. Ore was agglomerated with

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