oxide type cooper ore acid leaching

oxide type cooper ore acid leaching

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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Oxide Copper Leach Modeling - 911 Metallurgist

May 28, 2017  The acid leaching of copper oxide ores generates a vertical acid concentration gradient in the ore heap, which is not generally observed in sulfide deposits. Shafer et al have verified Roman’s model and were able to predict the leaching behavior for a relatively large scale column test on coarse ore.

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Leaching of Oxide Copper Ores by Addition of Weak Acid ...

May 11, 2020  XRD pattern of leaching residues (a) with weak acid and (b) without weak acid, and of (c) copper ore. SEM-BSE image for leaching residues (×1000)

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Oxide Sulfide Copper Ores Leaching

Apr 26, 2018  Dissolution by the standard analytical take-up (hydrochloric and nitric acid). The Chemistry of Leaching Copper Ores. A mineralogical examination of the 3 ore types revealed a copper mineralogy which can be divided into 3 separate mineral groups: 1. the oxide copper minerals chrysocolla and malachite, 2. chalcocite and 3. chalcopyrite.

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Copper Oxide Ore Leaching Ability and Cementation Behavior ...

Sulfuric Acid (H 2 SO 4) is the most common chemical reagent that is used for the leaching of oxide minerals including copper ones [5]. Among the most important factors of leaching are reagent type, temperature, time and pulp density [12] [13]. The principle of cementation is based on electrochemical differences between ions capacity.

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(PDF) Acid leaching of oxide-sulfide copper ore prior the ...

The first stage is the dissolution of free copper oxide and copper oxide wrapped by hematite-limonite ore. At this stage, the leaching efficiency is very fast (leaching efficiency is larger than 60%).

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LEACHING OF LOW-GRADE COPPER ORES: A CASE STUDY

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 can be acid, base, or salt solutions. Of all of these agents, sulphuric acid has been given the

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Copper Ore Types: Sulfides vs. Oxides An Investor's ...

Nov 09, 2020  As with oxide ores, SX-EW tech is used to recover copper from a pregnant leach solution. Secondary sulfides, which are formed by supergene secondary enrichment, are resistant to sulfuric leaching ...

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Enhanced extraction of copper from cupriferous biotite by ...

Mar 01, 2020  To treat this kind of copper oxide ore, thermal treatment and acid leaching is commonly utilized by many local plants, but the copper leaching efficiency is not high, resulting in the loss of copper resource. To solve the problem, enhanced acid leaching by

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(PDF) Extraction of Copper and Cobalt from Oxidized Ore ...

Inorganic acids such as sulphuric acid have found use together with certain reducing agents in leaching of copper-cobalt oxide ores. These reagents are not ideal due to the adverse effect the ...

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JP2014501849A - Copper oxide leaching method replacing ...

A copper oxide ore leaching method that does not utilize sulfuric acid, which comprises an aqueous solution of tricarboxylic acid mixed in water (the acidity in the mixture varies between pH 1.0 and 5.0). A step of impregnating the copper ore with an organic non-polluting leachate, a step of obtaining copper citrate, and optionally washing the impregnated copper ore again with an organic non ...

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A comprehensive study of the leaching behavior and ...

dissolution of copper oxide ore. Figure 3. E ect of sulphuric acid concentration on the dissolution of copper oxide ore. ratio of 10 mL/g is found to be optimal for leaching of copper using H2SO4. This can be explained in a way that the leaching agent is in excess of the calculated amount for the extraction of copper. After 75 min of

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Copper Leaching Method

Apr 19, 2019  A siliceous oxidized copper ore carrying from 1.5 to 2.0 per cent, metal may be profitably leached under favorable conditions; there are no other metallurgical means known for commercially handling ore of that character and grade. Copper Leaching Practices. For centuries small amounts of copper have been recovered from acid mine-drainage waters.

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Leaching of copper oxide with different acid solutions ...

Oct 15, 2009  Leaching processes of metallic copper or ores containing copper in the divalent state have been the subject of many research works in recent years , , , , . However, no study was found concerning the dissolution kinetics of CuO/Al 2 O 3 catalyst in inorganic or organic acid solutions.

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JP2014501849A - Copper oxide leaching method replacing ...

A copper oxide ore leaching method that does not utilize sulfuric acid, which comprises an aqueous solution of tricarboxylic acid mixed in water (the acidity in the mixture varies between pH 1.0 and 5.0). A step of impregnating the copper ore with an organic non-polluting leachate, a step of obtaining copper citrate, and optionally washing the impregnated copper ore again with an organic non ...

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Copper Oxide Ore Leaching Ability and Cementation

Copper Oxide Ore Leaching Ability and ... acid concentration, temperature, ... The remaining copper minerals proportion is called oxide types, and is treated by acid and bases reagents in the ...

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Enhancement of copper recovery by acid leaching of high ...

Nov 20, 2018  Sarcheshmeh Copper Mine uses the sulfuric acid solution to extract copper from oxide ores in Iran (Shayestehfar et al., 2008), similarly, malachite-atacamite ore of Disele Copper Mine is rich in high-content of silca gangues and SiO 2, the sulfuric acid solution is used to extract valuable metal and main parameters such as particle size ...

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Agitated Copper Leaching Cementation Process

Apr 14, 2016  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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Copper Ore Types: Sulfides versus Oxides Nasdaq

Apr 23, 2011  There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. ... which also allows for simultaneous leaching with sulfuric acid to produce a copper

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US3403020A - Leaching of copper from ores with cyanide and ...

US3403020A US418324A US41832464A US3403020A US 3403020 A US3403020 A US 3403020A US 418324 A US418324 A US 418324A US 41832464 A US41832464 A US 41832464A US 3403020 A US3403020 A US 3403020A Authority US United States Prior art keywords copper cyanide ore hcn recovery Prior art date 1964-12-14 Legal status (The legal status is an assumption and is not a legal

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Processing of Konkola copper concen- trates and Chingola ...

Leach Plant (TLP) to treat Nchanga oxide copper materials. The main focus of the hydrometallurgical option is to capitalize upon the synergy that exists between the treatment of sulphide copper concentrates (acid producing) and oxide copper ores (acid consuming). The paper discusses the key features of a comprehensive

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A comprehensive study of the leaching behavior and ...

The leaching behavior of an Iranian copper oxide ore in sulphuric acid was investigated in detail to evaluate the influence of various factors, to optimize the dissolution conditions and to determine the kinetics of the leaching. The results indicated that the increase in the leaching time and temperature enhanced the leaching rate of copper.

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A New Collector for Effectively Increasing Recovery in ...

Sep 29, 2019  Abstract: A new method, staged flotation for e ectively increasing the recovery of ultra-fine copper oxide ore with a new type of collector (ZH-1, C3-5 carbon chain xanthate) is proposed for the first time. ... research, we conducted an acid leaching and ammonia leaching experiment on 25 m

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Made By Cooper - bugfasr

After crushing oxide-type copper ores, such as azurite (2CuCO 3 Cu(OH)3), brochantite (CuSO 4), chrysocolla (CuSiO 3 2H 2 O) and cuprite (Cu2O), dilute sulfuric acid is applied to the surface of the material on leaching pads or in leaching tanks. As the acid trickles through the ore, it combines with the copper, producing a weak copper ...

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Leach solutions, copper oxide ore, acid - Substance ...

Leach solutions, copper oxide ore, acid . The pregnant solution obtained when sulfuric acid is applied to copper oxide ores and the copper and other metals taken into solution. Pre-Registration process, Other . Other identifiers . 67711-87-9 . EC Inventory, Pre-Registration process, Other . CAS number. Categories Display.

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(PDF) THE ART OF HEAP LEACHING Lee JOHN - Academia

Dump Leach (DPL) (Run Of Mine ore) 3. Heap Leach (HPL) (Crushed and or Agglomerated ore) 4. Vat Leach (VTL) (Ore or Concentrates) 5. Agglomerated Fines Heap Leach (AFHL) (Ore or Concentrates) The types of percolation leaching commercialised are

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Enhancement of copper recovery by acid leaching of high ...

Nov 20, 2018  Sarcheshmeh Copper Mine uses the sulfuric acid solution to extract copper from oxide ores in Iran (Shayestehfar et al., 2008), similarly, malachite-atacamite ore of Disele Copper Mine is rich in high-content of silca gangues and SiO 2, the sulfuric acid solution is used to extract valuable metal and main parameters such as particle size ...

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CN104404250A - Leaching method for recovering copper from ...

The invention belongs to the technical field of mineral metallurgy, and concretely discloses a leaching method for recovering copper from malachite copper oxide ores. The method is characterized in that an organic acid trichloroacetic acid solution is used as a leaching agent to leach copper from the copper oxide ores, the leaching temperature is 20-60DEG C, copper oxide ores with the ...

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Copper Mining and Extraction: Oxide Ores

• Leaching Oxide Ores with Sulfuric Acid • Questions Pyroprocessing Sulfide Ores Provides Acid for Leaching The process used to treat sulfide copper ores begins at the mine site, where the copper-bearing minerals are physically separated from the rest of the rock. The flow diagram below shows how the percentage of copper increases as the ...

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Agglomeration and leaching behaviors of copper oxides with ...

Jul 18, 2021  The chemical binder is one of the critical factors affecting ore agglomeration behavior and leaching efficiency. In this study, we investigated the effect of the type of binder and mass fraction of the H 2 SO 4 solution used on the curing, soaking, and leaching behavior of agglomerations. The results revealed that Portland cement (3CaOSiO 2, 2CaOSiO 2, and 3CaOAl 2 O 3) was the optimal ...

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oxide ore of copper - rcrcconnect

These copper oxide ores are usually leached using sulfuric acid to liberate the copper minerals into a solution of sulfuric acid laden with copper sulfate solution. The copper sulfate solution (called the pregnant leach solution) is then stripped of copper via a

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Supergene Oxidation of Copper Deposits: Zoning and ...

need to have high copper content if leaching and precipitation are efficient. Conversely, the second type requires substantial protolith copper content if the copper oxide zone developed is to be of potential ore grade, and requires also that removal of copper be minimal. Distinction between these protore environments is significant in ...

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Properties of Copper Ores - University of Arizona

feel that there are copper-rich ore bodies present at this new site. There is an abundance of water and sulfuric acid that could be used to dissolve (leach) the copper compounds found in the ore if this is possible. Leaching can be defined as the ability of a solvent (such as water or sulfuric acid) to dissolve precious metals from an ore body.

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US5207996A - Acid leaching of copper ore heap with ...

US5207996A US07/774,201 US77420191A US5207996A US 5207996 A US5207996 A US 5207996A US 77420191 A US77420191 A US 77420191A US 5207996 A US5207996 A US 5207996A Authority US United States Prior art keywords aqueous solution fluoroaliphatic copper leaching Prior art date 1991-10-10 Legal status (The legal status is an assumption and is not a legal conclusion.

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COPPER(II) EXTRACTION FROM AMMONIA LEACH SOLUTION

Keywords: hydrometallurgy, hydroxyoximes, LIX, copper ore, copper concentrate Introduction Ammonia leaching is frequently used in hydrometallurgy for processing of oxide and sulfide ores, concentrates or by-products, particularly those containing significant amounts of carbonate rocks, which during the acidic leaching contribute to increased

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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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Response Surface Methodology for Optimization of Copper ...

method is leaching, which involves a chemical reaction between copper oxide and a leaching medium. Leaching can be divided into two types, namely, acid leaching and ammonia leaching [7,8], named after the leaching agent employed. Acid and ammonia leaching are suitable for treating the

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Types of Copper Deposits in the World An Investor's ...

Sep 08, 2020  4. Types of ore. There are two distinct types of copper deposits: sulfide ore and oxide ore. Currently, the most common source of copper ore is the sulfide ore

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Extraction of Copper from a Refractory Copper Oxide Ore by ...

The study aimed to extract copper from copper oxide ores in which copper minerals had a complex association and dissemination with gangue minerals in the form of fine grain by catalytic oxidation acid leaching. Based on the research on the properties of the material and lots of experiments, the leaching process was performed. The optimum parameters of leaching process were determined as ...

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