copper heap leaching design

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-...

Automating and Optimizing Copper Heap Leaching Processes

Nov 09 2018 0183 32 Alena opens describing the heap leaching process for copper Copper ore is excavated from the ground crushed and then spread in uniform layers on a pad A slow trickle of sulfuric acid is distributed over the pile where it percolates to the bottom and a collection point The acid leaches out the copper along with other minerals which can be...

Escondida Copper Mine

Ausenco developed the Escondida Bio-leach Sulfide Project EBP heap leach pad that included innovative design of material handling and an air-injection system to promote bio-leaching It is the largest single use sulfide leach pad in the world with over 9 Mm2 of pad...

A Brief Note on the Heap Leaching Technologies for the

platinum group metals 17 heap leaching with mathematical modeling for the extraction of copper was developed 18 In this paper the authors reported the heap leaching plan and design for copper leaching by the mathematical model named MINLP and BARON-GAMS solver They studied di erent...

Optimal design and planning of heap leaching process

Feb 01 2014 0183 32 Although the process of heap leaching is an established technology for treating minerals such as copper gold silver uranium and saltpeter as well as remediating soil no studies to date have investigated process optimization This work presents a methodology for the design and planning of heap leaching systems to optimize the process...

In situ recovery of copper sulfide ores Alternative

Sep 01 2020 0183 32 Dissolution of sulfide ores requires oxidative leaching conditions then ISR can be conducted by applying bacterial leaching a technology which is established in the copper industry for the treatment of copper sulfide ores in heaps and dumps Ghorbani et al 2016 Petersen 2016 Therefore the choice of the permeability stimulation approach which defines the leaching...

Innovations in Copper Mining Extraction Producing

An example of this is Codelco-Chile s operation Radomiro Tomic located near Calama Chile While a conventional oxide mineral leaching operation this is the largest heap leaching operation in the world Radomiro Tomic was built in 1998 at a cost of US 641 million for a design plant capacity of 150 000 metric tons of copper per year...

Development metallurgy guidelines for copper heap leach

Nov 01 2016 0183 32 This paper outlines a comprehensive cost-effective testing program for the acid-ferric sulfate heap leaching of oxide supergene and primary copper or It is based on extensive experience in copper heap leaching and uses the many technological advances in the field developed over the past several decad The approach described requires firstly a detailed resource evaluation then a...

Improvements in Copper heap leaching by use of wetting

Heap leaching belongs to the group of percolation leaching processes and operates over ground The procedure is illustrated in Figure 1The oxide copper ore is piled up on leach pads which have a slight slope of approx 3 176 and a rubber lining which seals the ground under the heap...

Copper SX/EW Basic Principles and Detailed Plant Design

1 It was based on heap leaching of oxide ore 2 The SX mix boxes were all located at the same end of the settlers 3 Pump-mix impellers were not used and Inter-stage transfer was by pumping 4 Copper was deposited on copper staring sheets in EW Copper SX/EW Basic Principles Detailed Plant Design 14 RANCHERS BLUEBIRD ARIZONA 1965...

PROFESSIONAL PAPERS kcareno

Precious Metal Heap Leach Design Practice Daniel W Kappes Mineral Processing Plant Design Practice and Control Volume 1 Published 2002 by SME 1606 Chloride Leaching for Silver Copper Lead and Antimony - Industrial Experience in the 600 Tonne/Day Itos Bolivia Plant...

HEAP LEACH PAD DESIGN AND CONSTRUCTION PRACTICES

An early geomembrane lined copper heap leach operation in Arizona is shown on Photo 1 This article presents a general discussion of current leach pad design and construction practices based on lessons learned over the past 30 years by engineers contractors and mine operators in the mining industry HEAP CONSTRUCTION The construction of heap...

17th Design Considerations of Heap Leaching at

design considerations of the steepest heap leaching at Sarcheshmeh Open Pit Copper Mine 1 INTRODUCTION The second site of Sarcheshmeh heap leaching area extends over 300 000 m on a steep valley which is situated on the western side of the mine The leaching process has literally made many mines by taking low grade geological resources and...

Optimization of parameters affecting recovery of copper

heap leaching and reservoir engineering aspects studied are summarized in Tables 3 and 4 Table 2 Names of world s major mines producing copper through mass bioleaching 12 Heap bioleaching of copper ores historical and current Cu production t/year Region/mine Operation reserves t Ore processed t/day 14-15 103 Oxides/chalcocite...

HEAP LEACHING Experience

heap leach pad design H eap leaching has been applied to a number of different ores containing metals including gold silver copper nickel zinc and uranium The ore can be processed as coarse rock normally referred to as a dump leach or as a crushed ore in a heap leach The reagents used and the chemistry of leaching are metal...

PDF Heap Leaching Practice and Fundamentals

Nov 26 2004 0183 32 Leaching copper and precious metals from fragmented ore in heaps mine stripping waste dumps and caved workings is rapidly expanding in...

Copper Heap Leaching SX

Heap leaching SX-EW is a method of extracting pure copper from oxide ore by placing the crushed ore on a pad in a heap and spraying the leaching solution sulphuric acid over the heap The acid trickles through the heap and dissolves the copper mineral into solution The leach solution collects at the bottom of the pad in a collection pond...

Experience Based Approach To Successful Heap Leach Pad

At first glance heap leaching can appear an extremely simple technology however without proper characterisation engineering and design heap leaching faces significant issues that can affect the overall economic viability of the project...

A BACTERIAL HEAP LEACHING APPROACH FOR THE

than heap leaching Mintek is currently developing technology for the heap leaching of primary copper sulphide chalcopyrite The leaching of chalcopyrite requires elevated heap temperatures to obtain economic copper recoveries and the heap leach design therefore focuses on the generation of exothermic heat by utilizing bacterially-assisted...

Dump and Heap Leaching

for successful heap leaching of gold and copper are provided in the chapters on gold silver and copper hydrometallurgy elsewhere in this handbook Other metals of interest in heap or dump leaching include uranium nickel cobalt zinc and recently some rare earth elements Of these uranium heap leaching has had the most attention...

FACT SHEET Robinson Nevada Mining Company

were approved for expansion of the existing Weary Flats D-Pad gold heap leach facility Construction of the copper heap leach facility cannot be initiated until detailed design drawings are submitted to and approved by the Nevada Division of Environmental Protection the Division Approval to construct remaining phases of the Weary Flats D-Pad...

Particle size distribution for copper heap leaching

The particle size distribution PSD for copper heap leaching is an important consideration in the design and operation of any copper heap leaching facility High 173 resolution 3D X-ray microtomography XMT can be used for the direct determination of the percentage of exposed valuable mineral grains in multiphase particles which vary in...

Technical Memorandum

Subject Rosemont Heap Leach Drain Line Design Date May 4 2009 10 Introduction This technical memorandum presents the leach pad drain pipe sizing results for the Phase 1 and Phase 2 Heap Leach Pads at the Rosemont Copper Project The proposed leach pad phases will contain a piping network to accommodate a 100-year 24-hour storm event in...

PDF THE ART OF HEAP LEACHING Lee JOHN

The heap leaching of nickel laterites is problematic in that the GAC is around 500 kg/t and this has also restricted the commercialisation of nickel heap leaching Typical GAC for a copper heap leach is 10 to 40 kg/t H2SO4 acid and GLC for a gold heap leach is 03 to 1 kg/t NaCN...

The progression of metallurgical testwork during heap

THE PROGRESSION OF METALLURGICAL TESTWORK DURING HEAP LEACH DESIGN 31 Introduction Heap leaching is used extensively for the processing of copper and gold or Low capital and operating costs and simple atmospheric leach processes make heap leaching suitable for low-grade ores and small deposits...

Precious Metal Heap Leach Design and Practice

Agricola in his book De Re Metallica publ 1557 illustrates a heap leach with a 40-day leach cycle Figure 1 which could pass in many ways for a modern heap leach The Agricola heap leach recovered aluminum actually alum for use in the cloth dying industry Copper heap and dump leaches in southern Spain were common by about 1700...

A Brief Note on the Heap Leaching Technologies for the

Heap leaching is a low-cost technology used in industrial mining to recover precious metals such as gold and uranium along with several other highly sought after metals like copper from their primary resources ores and minerals For many decades there has been a growing demand for heap leaching due to its environmental benefits Heap leaching provides mining operators with a benign...

Heap leaching

Heap leaching is an industrial mining process used to extract precious metals copper uranium and other compounds from ore using a series of chemical reactions that absorb specific minerals and re-separate them after their division from other earth materials Similar to in situ mining heap leach mining differs in that it places ore on a liner then adds the chemicals via drip systems to the...

A Methodology For Design And Operation Of Heap Leaching

The dissolution of valuable species by heap leaching is strongly dependent on the design and operating variables so the study of the influence of these variables on recovery and their optimization for the best performance are attractive tasks for the development of the mining industry In this work a methodology is developed that enables the...

Agglomeration technique improves heap leaching process

Heap leaching relies on a leaching agent moving through a bed of heaped ore to extract the metallic components Crushed ore is stacked on a leaching pad and irrigated with the leaching agent The leaching agent chemically reacts with the metal in the ore to dissolve the copper into the solution as it percolates through the heap...

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