Heap Leaching Tests On Gaspe Copper Oxide Ore

(PDF) In Situ and Heap-Leaching Mining

HEAP LEACHING TESTS ON GASPE COPPER OXIDE ORE. March 1973 . P.H. Jennings; P. Tarassoff; R.E. Ford; Copper oxide ore may be leached at all sizes from run …

Copper Oxide Ore Heap Leaching Testwork and Scale-Up

Copper Oxide Ore Heap Leaching Testwork & Scale-Up 8 . Sample Pages. Notes: 1. This is intended to gain early information about the quality of potential process water, and to provide the opportunity to include leach tests with process water if appropriate (such as when sea water or saline ground water is likely to be used). The water quality may vary due to seasonal and other effects, and ...

Heap Leaching Oxide and Sulfide Copper Ores

0.3% Cu for copper oxide ore) or strong leach solution (pH of copper sulfide ore leach solution is 1.1 and pH of copper sulfide ore leach solution is 2). Column leaching results also show that about 80 to 90% of copper was recovered from the copper sulfide ore in a very short leaching time irrespective of crushing technique. As expected, copper

Investigation of Affecting Parameters on Heap Leaching ...

Keywords: Copper Oxide Heap Leaching, Bottle Rolling Test, Column Tests, Copper and Iron Recoveries, Acid Sulfuric Consumption 1. Introduction Sarcheshmeh copper complex is located in 160 kilometers south-west of Kerman and 50 kilometers south of Rafsanjan and the central area of the Zagros Mountains [1]. Copper production at this complex is done by pyro-metallurgy and hydrometallurgy …

Copper Oxide Ore Heap Leaching Testwork and Scale-Up

Copper Oxide Ore Heap Leaching Testwork & Scale-Up 8 . Sample Pages. Notes: 1. This is intended to gain early information about the quality of potential process water, and to provide the opportunity to include leach tests with process water if appropriate (such as when sea water or saline ground water is likely to be used). The water quality may vary due to seasonal and other effects, and ...

PRETREATMENT OF COPPER ORE PRIOR TO HEAP LEACHING

0.3% Cu for copper oxide ore) or strong leach solution (pH of copper sulfide ore leach solution is 1.1 and pH of copper sulfide ore leach solution is 2). Column leaching results also show that about 80 to 90% of copper was recovered from the copper sulfide ore in a very short leaching time irrespective of crushing technique. As expected, copper

Leaching of copper oxide ore by

leaching processes, in particular by leaching oxide copper ores with sulphuric acid and subsequent downstream processing of the leachate through solvent extraction followed by the electrowinning of copper (SX-EW). At present, heap leaching is a well-known industrial process for the treatment of minerals with oxidized species and secondary sulphides from base metals, usually supported by ...

Heap Leaching - an overview | ScienceDirect Topics

Heap leaching was initially applied to acid leaching of copper oxide ores and later extended to secondary sulfides and mixed oxide-sulfide copper ores. By introducing bacterial activity and forced aeration to the heaps, an oxidative environment suitable for sulfide oxidation can be achieved. Application of bioheap leaching to chalcopyrite ores is complex and generally encounters poor leaching ...

Advances in high-temperature heap leaching of refractory ...

The heap leaching of copper ores is an example of such a trend, where heap leaching was initially applied only to the acid leaching of oxide ores. The most important factors to be considered in oxide heap leaching are the copper dissolution, acid consumption, and gangue chemistry. The rate at which acid can be supplied to the heap is constrained by the increase in undesirable gangue reactions ...

A BACTERIAL HEAP LEACHING APPROACH FOR THE TREATMENT …

production), followed by oxide heap leaching (13%), secondary copper sulphide heap leaching (5%), and other hydrometallurgical routes such as concentrate pressure leaching and bacterial leaching. There are currently no heap leach operations processing primary (chalcopyrite) copper sulphides. 80% of world copper resources consists of low grade chalcopyrite, where the grade is too low to ...

(PDF) THE ART OF HEAP LEACHING | Lee JOHN - …

Leaching of high grade copper oxide ore is a first order lixivant controlled in so much as the lixivant supply to the mineral surface is constrained by lixivant concentration and percolation rate. However in low grade copper and oxide gold heap leaching the reaction is more diffusion controlled as the lixivant is mostly present in excess ...

Particle size distribution for copper heap leaching ...

In order to build a heap for copper recovery, the mined ore is crushed to an appropriate particle size so that the valuable mineral grains are exposed and can be extracted. Then, the crushed ore is mixed with sulfuric acid solution in an agglomerating device at an optimum moisture content to consolidate the fines with the coarser material and to precondition the ore for bacterial development ...

Gaspé Copper mine (Gaspé mine; Copper Mountain mine ...

Jennings, P.H., Tarassoff, P., Ford, R.E. (1973) Heap leaching tests on Gaspe Copper oxide ore. Transactions, Society of Mining Engineers, AIME, 254, 80-88. Other Regions, Features and Areas containing this locality. North America Plate Tectonic Plate. This page contains all mineral locality references listed on mindat.org. This does not claim to be a complete list. If you know of more ...

Technical Overview August 2019 - Metaleach

Typically for copper only oxide ores, ... Leaching tests indicated sulphuric acid consumptions ranging from 300 to >1,000kg acid per tonne for a number of samples from León. A composite ore sample ground to <75 microns leached 86.2% of the total copper, whilst consuming 1,150kg acid per tonne of ore. The same sample was leached in ammoniacal solution giving 81.2% Cu recovery in 72 h, 94% of ...

Copper Heap Leaching & SX-EW Slideshow - MineralsEd

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 ...

Investigation of Affecting Parameters on Heap Leaching ...

04/02/2017· Heap leaching method is known as cheap method for copper extraction. Presence of clay and acid consumer waste minerals are the most critical issues because they may bring out the process from economic mode. For reduce acid consumption and increasing copper extraction in heap leaching method, about 3 tons sample was taken randomly from different low grade zones.

(PDF) THE ART OF HEAP LEACHING | Lee JOHN - …

Leaching of high grade copper oxide ore is a first order lixivant controlled in so much as the lixivant supply to the mineral surface is constrained by lixivant concentration and percolation rate. However in low grade copper and oxide gold heap leaching the reaction is more diffusion controlled as the lixivant is mostly present in excess ...

Testing protocol for evaluating amenability of ores to ...

The test results can be used in the early stages of the project to develop an initial understanding of the benefits of utilizing HPGR in the comminution circuits for heap leaching. Gold oxide, copper sulfide and copper/gold sulfide samples were used in this research. Laboratory tests including PSD analysis, scanning electron microscope (SEM), slake durability, Helium (He) pycnometry, nitrogen ...

The progression of metallurgical testwork during heap ...

This has resulted in renewed interest in heap leaching of uranium ores, and in the development of processes for the bacterial heap leaching of low-grade chalcopyrite ores and the acid heap leaching of nickel laterites. A complete programme of heap leach testwork typically involves a sequence of bottle roll tests and column tests, followed by piloting on test heaps. The initial testwork is ...

Particle size distribution for copper heap leaching ...

In order to build a heap for copper recovery, the mined ore is crushed to an appropriate particle size so that the valuable mineral grains are exposed and can be extracted. Then, the crushed ore is mixed with sulfuric acid solution in an agglomerating device at an optimum moisture content to consolidate the fines with the coarser material and to precondition the ore for bacterial development ...

Electrokinetic Applications in Hydrometallurgical Copper ...

enhances the percolation of leach solution through a heap of ore. The electrolysis phenomena, ... This was done through a series of column leach tests. For each test, a PVC column is packed with copper oxide compost, and then saturated with sodium chloride solution. An electric potential ranging from 0 – 80 V was subsequently applied across the column for either 2 or 4 days. After the pre ...

Technical Overview August 2019 - Metaleach

Typically for copper only oxide ores, ... Leaching tests indicated sulphuric acid consumptions ranging from 300 to >1,000kg acid per tonne for a number of samples from León. A composite ore sample ground to <75 microns leached 86.2% of the total copper, whilst consuming 1,150kg acid per tonne of ore. The same sample was leached in ammoniacal solution giving 81.2% Cu recovery in 72 h, 94% of ...

Influence Factors of Permeability during Heap Leaching …

In order to explore the influence factors of permeability during heap leaching of Yangla copper ore in China, falling head permeability test was applied to draw a comparison between the permeability of various samples, and then permeability evolutionary law of the sample ore from leaching heap was analyzed under different ore size or compaction ...

Heap leaching: Could it be an alternative to conventional ...

12/12/2019· Ultimate recovery of the target mineral can range from 30% of contained run-of-mine dump leaching sulphide copper ores to over 90% for the ores that are easiest to leach, some oxide gold ores.

Location

CONTACT INFO