TrEating ACID coNsuMpTioN OF COPPEr ore

TrEating ACID coNsuMpTioN OF COPPEr ore

Acid Leaching - Copper Ore Treatment Method

2017-5-23 · The flowsheet discussed in this study is for treatment of 100 tons per day oxide-sulfide copper ore by the leaching process using sulfuric acid-ferric

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Understanding Acid Consumption and Its Relationship

2016-8-11 · information on acid consumption of various gangue minerals as well as data for copper recovery from an associated copper ore. INTRODUCTION Acid consumption during copper leaching of oxide ores is a very important issue. Acid consumption can determine whether or not a project is economically and technically feasible. The cost of supplying

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(PDF) An Overview of Treatment of Copper-gold Ores

2022-1-2 · In the pre-treatment tests, acid leaching with/without the addition of hydrogen peroxide (4.5-45 kg H2O2 per tonne ore) was carried out to eliminate

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(PDF) Investigation of Affecting Parameters on Heap ...

2017-8-24 · Leaching of copper from a Jordanian copper ore has been studied using a stirred batch reactor with hydrochloric acid as the main lixiviant, under

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Acid curing and agglomeration for heap leaching ...

2017-1-1 · Acid curing and agglomeration are generally used prior to heap leaching of copper oxide and secondary sulfide ores to improve the copper extraction process. Agglomeration is used to bind fine particles to coarse ones to increases the permeability of an ore heap while acid curing inhibits the dissolution of some silicates and accelerates copper ...

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

2015-11-26 · 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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LEACHING OF LOW-GRADE COPPER ORES: A CASE

2017-6-9 · 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 can be acid, base, or salt solutions. Of all of these agents, sulphuric acid has been given the

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Effect of multistage solution–mineral contact in in-situ ...

2020-12-1 · The maximum acid consumption between stages 1 and 3 was 57 kg acid/tonne ore when sulfuric acid was used, 49 kg acid/tonne ore for the MSA systems, and 36 kg acid/tonne ore for the HCl solutions. The acid consumptions in the ferric-sulfate systems exceeded those for copper-oxide heap leaching with sulfuric acid of 18–47 kg/tonne (Azmayandeh ...

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Energy Efficiency & Copper Hydrometallurgy

2020-8-20 · energy consumption for copper extraction processes from ore in the ground to final salable cathode product (i.e. mining through electrorefining or electrowinning) to; - compare process routes, - identify and prioritize opportunities for energy reduction, and - support the Global Mining Initiative, ICMM and sustainable development initiatives

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copper extraction and purification - chemguide

2015-7-26 · Extracting copper from other ores. Copper can be extracted from non-sulphide ores by a different process involving three separate stages: Reaction of the ore (over quite a long time and on a huge scale) with a dilute acid such as

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Acid curing and agglomeration for heap leaching ...

2017-1-1 · Acid curing and agglomeration are generally used prior to heap leaching of copper oxide and secondary sulfide ores to improve the copper extraction process. Agglomeration is used to bind fine particles to coarse ones to increases the permeability of an ore heap while acid curing inhibits the dissolution of some silicates and accelerates copper ...

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

2015-11-26 · 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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Effect of multistage solution–mineral contact in in-situ ...

2020-12-1 · The maximum acid consumption between stages 1 and 3 was 57 kg acid/tonne ore when sulfuric acid was used, 49 kg acid/tonne ore for the MSA systems, and 36 kg acid/tonne ore for the HCl solutions. The acid consumptions in the ferric-sulfate systems exceeded those for copper-oxide heap leaching with sulfuric acid of 18–47 kg/tonne (Azmayandeh ...

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Energy Efficiency & Copper Hydrometallurgy

2020-8-20 · energy consumption for copper extraction processes from ore in the ground to final salable cathode product (i.e. mining through electrorefining or electrowinning) to; - compare process routes, - identify and prioritize opportunities for energy reduction, and - support the Global Mining Initiative, ICMM and sustainable development initiatives

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USGS Mineral Resources Program Copper—A Metal for

2009-6-10 · Copper consumption changes from 1980 through 2008 for India, the United States, China, and the rest of the world. The qualities of copper that have made it the material of choice for a variety of domestic, industrial, and high-technology applications have resulted in a steady rise in global copper consumption. USGS studies of copper

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Chapter 7 Energy Use in the Copper Industry

1996-11-20 · duction of cathode copper. Assuming an ore grade of 0.55 percent and a recovery rate of87.5 6.4 percent copper in the concentrate, concentrat-ing 1 ton of copper ore requires over 200 billion Btu, or approximately 42 million Btu/ton of cath-ode copper.10 Grinding accountsfor roughly 6 0 percent of the total energy consumed in proc-

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Copper SX-EW – What are the options? - MINING.COM

2017-2-28 · The attractions of copper SX/EW are now well known – it is highly selective, can treat a wide range of copper concentrations, produces high purity cathode at site, is suitable for both large and ...

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The leaching and adsorption behaviour of gold ores

2021-12-22 · from the dissociation of the complex is used to leach gold from the ore. The stepwise dissociation of cyanide from copper-cyanide complexes can also be used to leach gold from a variety of oxide and sulphide ores. The copper cyanide's fourth ligand readily dissociates at low cyanide concentrations for use in gold leaching.

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Transparency on greenhouse gas emissions from mining

2020-2-3 · For copper mining, fuel consumption increased by 130% and electricity consumption increased by 32% per unit of mined copper in Chile from 2001 to

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Pollution From Mining - TheWorldCounts

1993-4-10 · Fuelled by rainfall, there is a non-stop flow of water contaminated with acid and heavy metals from the mine. And no solution in sight to stop the pollution. A common problem. Acid that drains from mines is a very common problem in mining. It is also one of mining's most severe and important environmental challenges.

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Minerals | Free Full-Text | Acid-Gangue Interactions in ...

2018-1-29 · Heap leaching accounts for a fifth of global copper production, sourced primarily from porphyry ores, yet metal recoveries are often not optimal. Gangue, and its interaction with acid, plays an important role in such processes. Thus, a

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Management of Copper Heap Leach Projects: A Geologist’s ...

These approaches affect copper leach kinetics, overall copper recovery, acid consumption, and capital and operating costs. A successful copper heap leach evaluation program requires a systematic approach, beginning with geologic mapping, then drilling and hydraulic and metallurgical testing, and concluding with financial analysis, engineering ...

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VERVIEW OF CYANIDE TREATMENT METHODS

2020-8-17 · 8.0 to 9.0 in one ore more agitated tanks, and lime is added to neutralize the acid (H+) formed in the reaction to maintain the pH in this range. Lime usage is generally on the order of about 3.0 to 5.0 grams per gram of CN-oxidized. As indicated, copper (Cu+2) is required as a catalyst, which is usually added as a solution of copper

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Techniques for Collectors : Cleaning native copper

2006-2-17 · Also had both results from the same mine. I use sulfamic acid exclusively for any acid cleaning. Natural and just washed and scrubbed or pressure wash is my preferred cleaning method. Unfortunately it seems that the majority of the specimens I collect have some kind of nasty coating that usually has some calcite next to the copper. Acid works fine.

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Energy Efficiency & Copper Hydrometallurgy

2020-8-20 · energy consumption for copper extraction processes from ore in the ground to final salable cathode product (i.e. mining through electrorefining or electrowinning) to; - compare process routes, - identify and prioritize opportunities for energy reduction, and - support the Global Mining Initiative, ICMM and sustainable development initiatives

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Heap Leaching - an overview | ScienceDirect Topics

Mark E. Schlesinger, ... William G. Davenport, in Extractive Metallurgy of Copper (Fifth Edition), 2011 15.4.2.6 Irrigation of Heap. In industrial heap leaching, the lixiviant used is the copper-depleted raffinate returning from SX (Fig. 15.2).This has a typical composition of 0.4 g/L Cu and ~5–10 g/L H 2 SO 4.Further sulfuric acid may be added to the raffinate before it is recycled to

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Leaching - an overview | ScienceDirect Topics

Acid consumption is controlled by the gangue minerals in the host rock of the ore and is an important economic consideration. Upon reaching the bottom of the heap, the copper laden solution exits and is collected in piping and eventually ponds for pumping to SX.

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The leaching and adsorption behaviour of gold ores

2021-12-22 · from the dissociation of the complex is used to leach gold from the ore. The stepwise dissociation of cyanide from copper-cyanide complexes can also be used to leach gold from a variety of oxide and sulphide ores. The copper cyanide's fourth ligand readily dissociates at low cyanide concentrations for use in gold leaching.

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HEAP LEACH – SX/EW Percolating liquids

2016-11-14 · copper. Leachable copper is the true head grade for heap leaching, and the orebody should be modelled accordingly n Select the appropriate leachable copper assay procedure. Better to start correctly than be faced later with a major re-assaying effort n For oxide ore, use a hot sulphuric acid soluble procedure. The cold acid soluble

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Estimates of Electricity Requirements for the Recovery of ...

2011-9-27 · study contain estimates of electricity consumption for the mining and processing of ores, concentrates, intermediate products, and industrial and refined metallic commodities on a kilowatt-hour (kWh) per unit basis, primarily the metric ton (ton) or troy ounce.

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