• Leaching of High Grade Ores and Concentrates • Design Factors –Copper Extraction –S/L Separation and Washing –Acid Balance –Copper SX-EW –Precious Metal Recovery • Other Factors • GALVANOX – New Technology for Copper Leaching • Concluding Remarks 2
Copper SX-EW technology 003 Outotec is the only company to offer a complete solution for the whole copper production chain, from mine to metal. Leaching Electro-winning Tankfarm Solvent Extraction Sulfidic/oxidic copper ore Cathode copper Considerable savings in operating costs When a single technology partner provides a combined
Aug 04, 2016· The ability to use heap leaching, together with solvent extraction and electrowinning (SX/EW) to go from ore to high grade metal at the mine-site, makes it …
2 Recovery of Copper by Solution Mining Methods Solution mining replicates the natural process of oxidation and reduction, described above. Dilute acidic solutions are introduced to the copper-bearing ores, causing dissolution of soluble copper minerals (Table 1) remaining in the leached cap and underlying enrichment blanket.
A. Processing of Oxide Ore. Oxide ores are generally processed using hydrometallurgy. This process uses aqueous (water-based) solutions to extract and purify copper from copper oxide ores at ordinary temperatures, usually in three steps: heap leaching, solvent extraction, and electrowinning.
Leaching & Electro-Winning Method A. Leaching Oxide ore and tailings are leached by a weak acid solution, producing a weak Copper Sulfate solution. B. Electro-Winning (SX/EW) The copper-laden solution is treated and transferred to an electrolytic process tank.
Copper ore leaching sx edmontonpublicschool. More Copper ore leaching sx images . Read more These 10 mines will set the copper price for the. Producing nearly a quarter of global copper, Contact Supplier Electro Copper Refining - Elmhurst College.
the oxide material, and the treatment of the combined leach liquor by SX for the recovery of zinc9. A process for the treatment of Mexican polymetallic (Cu/Zn) and chalcopyrite copper concentrates, developed by BacTech and Mintek, includes bioleaching, copper recovery by SX/EW, and zinc recovery by SX/EW10. Non-sulphide zinc ores
The new "mine-for-leach" process uses bacteria to extract copper from the ore and solvent extraction/electrowinning (SX/EW) to recover copper from the resulting leach liquor. Phelps Dodge has ceased all recovery of copper from sulfide mineral concentrates by means of conventional smelting operations at its Morenci, Arizona operations.
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 ...
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). It can produce either copper cathode or copper sulphate crystal.
SX-EW technology involves leaching (the process of dissolving useful ingredients with a solution) in atmospheric conditions of copper ore heaps by means of diluted sulphuric acid. Folowing leaching, the pregnant leaching solution is transported via a drainage system to the next stage. In an SX-EW reactor, the first process to take place is solvent extraction, which involves setting and ...
Oct 25, 2015· The Bagdad mine is a large copper mine and represents one of the largest copper reserves in the United States and in the world, having estimated reserves of 873.6 million tonnes of ore grading 0.36% copper. Bagdad mine is home to the world’s first commercial-scale concentrate leach processing facility (2003) and one of the longest…
First sulphide ore was intersected in February 2005. Construction of the concentrator commenced in October 2004, with first concentrate being produced in March 2006. The open pit operation exploited oxide, transitional and chalcocite mineral resources from which copper cathode was recovered via a heap leach and SX-EW method.
mineralogical composition of the starting copper ore. All over the world, leaching followed by SX/EW has been is a rapidly developing technology in recent years. The role of SX in copper production is irrefutable. International Copper Study Group estimates that solvent extraction – electrowinning
leaching of oxide copper ores with sulphuric acid and subsequent SX/EW-treatment. Several trials on the use of wetting agents in heap leaching of Chilean oxide copper ores have been successfully conducted at IME, Institute of Process Metallurgy & Metal Recycling at the RWTH Aachen University in cooperation with BASF SE, Ludwigshafen.
The leaching, solvent extraction and electrowinning (LX-SX-EW) process is a widely used method in the production of copper from low-grade oxidized ore. Copper is the most common metal to be processed by LX-SX-EW, but the process can also be used to extract, purify and concentrate other metals, such as nickel, cobalt and zinc.
Heap Leaching Copper Ore with Agglomeration. Crushed copper ore is first typically processed via heap leaching. An effective leaching step is critical to SX-EW, as it sets the stage for how much copper can be recovered. For this reason, the heap leaching step is commonly preceded by agglomeration of the ore in a rotary drum agglomerator.
PDF | In the ten years from 2003 to 2013 global mine production of copper has increased by over 23% to meet demand while the weighted average head grade has dropped from 0.9 to 0.7% Cu. These ...
Mar 06, 2018· Heap leaching is the method most commonly chosen for copper recovery from oxide ores. An acidic solution is used to leach the metal, dissolving the copper into what is referred to as a pregnant leach solution (PLS).This solution is collected and purified by solvent extraction (SX).
Copper recovery by L/SX/EX in 1968 In 1968 there were only two widely practiced copper leaching processes using dilute sulphuric acid. The first process, vat 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-
leach copper from a sulphide ore. The plant flowsheet has been complicated by various phases of expansion, but essentially involves oxygen pressure leaching of the ore in SX raffinate. Pressure leaching is followed by a train of atmospheric leach tanks where ferric ion is consumed and leaches a few additional percent of copper.
Hie guys. I am having problems with the amount of copper associated with our ore. The copper content is not high enough for economic recovery but its high enough to cause problems in our CIP circuit and electrowinning. A typical elution would produce about 4kgs of gold and 5kgs of copper. The coppe
Most of the copper ores mined today are oxide or sulfide ores. Extraction of sulfide ores is covered in more detail in Copper Mining and Extraction: Sulfide Ores (11–14), but is introduced here because an important by-product of this process is used for the extraction of oxide ores. Pyroprocessing Sulfide Ores Provides Acid for Leaching
SX-EW has continued to demonstrate successful use in effectively extracting and recovering copper from low grade and oxide ores. As a result, SX-EW has quickly become a staple in the copper industry; SX-EW is currently responsible for producing around 20% of the world’s copper (see the infographic on copper production). This demonstrated ...
8 October 25th, 2004 Drivers for Concentrate Leaching Cost effective alternative to conventional smelting & refining Capital cost versus greenfield smelter/refinery projects $1,000-2,000 versus $3,000-6,000/annual tonne Ability to utilize existing SX capacity ($300-400/annual mt) Ability to utilize spare EW capacity ($500-600/annual mt) Ability to utilize existing infrastructure
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 ...
For many years as an integrated mine-concentrator-smelter operation, Morenci pioneered the large-scale hydrometallurgical treatment of mined copper ore by dump leaching, solvent extraction (SX) and electrowinning (EW) during 1985, in parallel with conventional treatment.
Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.
Tintaya Project - Peru - BHP Copper - Audit of metallurgical testwork, feasibility study and basic engineering for large scale copper heap leach/SX/EW facility for oxide ore with parallel agitated leaching/CCD for fines (1997-98) Intec Demonstration Plant - NSW - Australia - Intec Copper Ltd - Review of demonstration plant performance (1998)
Solvent Extraction and its Application to Copper, Uranium & Nickel-Cobalt Contents & Abstracts $ 300.00 ex GST Add to cart; Uranium Ore Processing Contents & Abstracts $ 300.00 ex GST Add to cart; Copper SX/EW Basic Principles and Detailed Plant Design Contents & Abstracts $ 300.00 ex GST Add to cart; A-Z of Copper Ore Leaching