Development and optimization of mixed sulphide/oxide ...
copper oxide minerals, to form a sulphide layer on the surface of the mineral particles (Zhou Development and optimization of mixed sulphide/oxide copper ore treatment at Kansanshi by F.X. Paquot* and C. Ngulube* The Kansanshi Mine (First Quantum Minerals Ltd) treats a mixed sulphide/oxide copper-gold vein deposit. Until June 2009, the sulphide and
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Shallow, visible copper oxide & sulphide intercepts up to ...
Castillo Copper Limited ("CCZ") is pleased to announce incremental shallow, visible copper oxide (malachite) and sulphide (chalcocite) mineralisation was recorded in six drill-holes, with cumulative intercepts up to 12m at the Big One Deposit (Figure 1) within the core Mt Oxide Project (Appendix A).
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The Smelting of Sulfide Ores of Copper in Preconquest Peru
With a simple sulfide ore like chalcocite, once the sulfur has been burned off as sulfur dioxide (SO2) and the copper sulfide thus converted to copper oxide, the oxide can be reduced with charcoal, described above (Thompson 1958: 4). How the Indians happened on the roasting of sulfide ores may never be known. Obviously
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Acid Leachability Copper Species - 911 Metallurgist
the copper oxide mineralization. We, herein, propose a sequential copper analysis method which, when used on geological or assay samples on a systematic basis, is able to evaluate various copper deposits, including secondary sulfide deposits, and determine their amenability to leaching as well as their mineralogical zonation and
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Dissolution kinetics and solubilities of copper sulfides ...
2. Materials and methods2.1. Mineral samples. Dissolution kinetic experiments were performed either using sulfide concentrates or tailings samples. The tailings samples were taken from different depths (1.0, 1.5, 2.0, 2.95, 4.0, 5.0, 7.0, and 9.0 m) of an oxidation profile of the Piuquenes tailings impoundment, La Andina porphyry copper deposit, Chile (Dold and Fontboté, 2001).
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Copper Oxide Ore Leaching Ability and Cementation Behavior ...
One of the Iranian copper deposits that is located east of Iran and also known as a primeval one in that area is Mesgaran Field. Old mining works have been clearly seen in the area. Iran is located on global copper belt and as a result it has numerous potential areas as copper deposits. The purpose of this study is identifying possible potentialities of copper mining in less developed regions ...
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Copper Ore Types: Sulfides versus Oxides | Nasdaq
Copper oxide ores. Copper oxide ores are not as attractive of an exploration target as the copper sulfide ore types due to their lower grade, however low-grade copper oxide deposits …
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Copper Ore Types: Sulfides vs. Oxides | An Investor's ...
There are two main types of copper ore of interest: copper oxide ores and copper sulfide ores. Both ore types can be economically mined, but they are processed in different ways. Copper sulfide ...
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CHEMISTKY OF DEPOSITION OF NATIVE COPPEE J FEOM …
Ferric oxide, copper sulphide, and acid 29 ... Comparison of the theories_____ 42 Experiments _____ 42 ... that might intervene between the magmas and the final ore deposits. Perhaps the most significant point to decide first is whether water was present, or, if it is impossible to be sure on this point, it …
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Why oxide form of ore is preferred over sulphide in ...
The reduction of metal from oxide is a bit easy because Delta g in most of the cases are negative and it produces less pollutant also but when we talk about sulphide ores this produce harmful sulphur gas SO2 during the process of metallurgy and it is also tough to to get metal from it in comparison to that of oxide.
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Flotation of mixed copper oxide and sulphide minerals with ...
At a blend of 70% sulphide ore and 30% oxide ore, the rougher scavenger copper recovery was as high as 95.5%. The copper recovery from the blended ore using a mixture of collectors was shown
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Co-simulating Total and Soluble Copper Grades in an Oxide ...
In porphyry copper deposits, the copper ore often is composed of two main parts including oxide and sulfide ores. The oxide rock type consists a fraction of total copper which would be recovered ...
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Copper Mining and Extraction: Oxide Ores
Copper Mining and Extraction: Oxide Ores. Copper is refined from ores in the ground, either through underground or open-pit mines. 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 ...
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[PDF] Iron oxide copper-gold deposits: geology, space-time ...
Many diverse ore systems are classified together as iron oxide copper-gold (lOCG) deposits based on an empirical definition arising primarily from geochemical features that do not specify tectonic setting, geologic environment, or sources of ore-forming fluid, metals, or other ore components. Such deposits have (1) Cu, with or without Au, as economic metals; (2) hydrothermal ore styles and ...
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Geology: What is a Mineral Deposit? — Mining Focus
Heavy sulphide minerals settling to bottom of magma chamber deep in the crust form nickel, copper and platinum group metal deposits. Ancient ocean chemical deposition of minerals on the seafloor. For example iron was deposited in layers on the then sea floor billions of years ago as the oxide …
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A study of the flotation characteristics of a complex ...
treats three distinct ore types; oxide, sulphide and mixed. The objective of this study was to investigate the floatability of a complex Kansanshi mixed copper ore comprising sulphide and oxide minerals with a view to achieving an optimal flotation performance in the treatment of the Kansanshi ore body. This required an in-depth
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CU, AU, AND ZN-PB SKARN DEPOSITS (MODELS 18b,c; Cox …
Ore minerals may be present in massive, stratiform, vein, and (or) disseminated form; grain size is highly variable and ranges from fine to very coarse. Ore may be present in sulfide mineral zones, oxide zones, and in supergene, clay-rich oxidized zones. Sulfide minerals and gold generally are deposited during late, retrograde alteration within
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COPPER OXIDE RESOURCES - Arizona
Copper oxide deposits, and certain sUlfide deposits, are amenable to treatment by heap, leaching and SX-Ew. In this process the ore is mined and placed in heaps and treated with a dilute aqueous solution of SUlfuric acid. The copper minerals are dissolved as a soluble copper sulfate. These solutions are then mixed with an organic
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From Ore to Finished Product - Copper
Copper - From Beginning to End. Copper is a major metal and an essential element used by man. It is found in ore deposits around the world. It is also the oldest metal known to man and was first discovered and used about 10,000 years ago. And as alloyed in bronze (copper-tin alloy) about 3000 BC, was the first engineering material known to man.
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(PDF) Flotation of mixed copper oxide and sulphide ...
Copper sulphide ores Flotation collectors From previous flotation investigations of mixed copper oxide and sulphide minerals using xanthate and Mineral processing hydroxamate collectors it was hard to distinguish the impact of the alkyl hydroxamate collector on sul- Alkyl hydroxamates phide recovery as the sulphide and oxide minerals occurred ...
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differences in processing sulfide and oxide gold ores ...
Apr 21, 2011 · … copper oxide ores and copper sulfide ores. JIM CRAMER'S VIEW OF 2013. Home … Gold Companies … there is an important difference. »More detailed. gold processing: Mining and concentrating — Britannica Online … The nature of the ore deposit determines the mining and mineral processing techniques applied. Oxide ore ...
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Flotation of mixed copper oxide and sulphide minerals with ...
The ore mined is from a primary copper sulphide deposit with separate additional deposits of copper oxides. In conjunction with Ausmelt Chemicals, Minto is currently investigating options to recover copper oxide and sulphide minerals using flotation by blending their primary sulphide ore with oxide ores.
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AN INVESTIGATION OF COPPER RECOVERY FROM A …
Current copper deposits contain significant amounts of secondary non-sulphide minerals and newly discovered deposits are increasingly complex. As a result, research into the improvement of sulphide-oxide copper ores processing through the use of mixed collector systems has surged.
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Types of Copper Deposits in the World | An Investor's ...
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 mineral chalcopyrite, which accounts for …
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The Distributions and Relationships of Grade and Tonnage ...
Deposits in areas that have been tectonically active ____ 2 Comparison of nickel sulfide deposits in small intrusions ... grade of deposits composed primarily of oxide ore were found to follow lognormal distributions; oxide deposits have a median nickel grade of 1.36 percent and a median tonnage of 45xl06 metric tons. These
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mixed copper oxide and sulphide minerals processing
Flotation of mixed copper oxide and sulphide . In the case of the Minto operation the copper oxide and sulphide minerals occur in separate ore deposits and can be treated separately or blended together This investigation has shown that using n octyl hydroxamates (AM28 made by Ausmelt Limited) in conjunction with traditional sulphide collectors can successfully simultaneously recover copper ...
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Copper Exploration - Spectral Evolution
The largest, most valuable and profitable copper mines are historically large scale porphyry deposits. Other types of deposits can include volcanogenic massive sulfide ore deposits (VMS), iron oxide copper gold (IOCG) ore deposits, and copper skarn deposits. NIR spectroscopy is an excellent tool for mineral identification in copper exploration.
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Acid leaching of oxide–sulfide copper ore prior the ...
Oxide–sulfide copper ore was sampled from the ore body Cerovo C1 (south deposit) and used in this study. The chemical composition of the ore sample is pre-sented in Table 1. From Table 1, it can be seen that the high copper concentration is in the sample, as well as the high copper oxide content, while the sulfide copper concentration is lower.
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2.4 Iron oxide copper-gold mineral system | Geoscience ...
Iron oxide copper-gold (IOCG) deposits (Hitzman et al., 1992) are a diverse family of mineral deposits characterised by the following features: (1) Cu with or without Au, as economic metals, (2) hydrothermal ore styles and strong structural controls, (3) abundant magnetite and/or hematite, (4) Fe oxides with Fe/Ti greater than those in most igneous rocks, and (5) no clear spatial associations ...
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Nickel Sulfide Versus Laterite : The Hard Sustainability ...
Nickel is commonly present in two principal ore types – sulfide or laterite ores. Sulfide ores are typically derived from volcanic or hydrothermal processes and usually include copper (Cu) and/or cobalt, and sometimes other precious metals such as gold or platinum and palladium (generally grouped as platinum group metals or PGMs).
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