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The process of extraction of copper from its ores and preparing copper metal or chemical compounds for use in various goods is known as copper processing. ... particularly iron and sulfur in the case of …Web
The primary sulfide minerals of copper have been difficult to leach for the purpose of direct copper extraction. In particular, chalcopyrite has been observed to undergo a type of "passivation" under a variety of oxidative leaching conditions. ... The Mt. Gordon and Sepon processes were developed to recover copper from ores that were …Web
Production of Ni/Co from sulphide ores has its challenges that are fundamentally related to the mineralogy of this type of ores. 2.1 Mineralogy of Nickel-Copper Sulphide Ores. Studies on the geology and mineralogy of domestic nickel-copper sulphide ore deposits are reported in several sources in detail [16,17,18,19]. Although …Web
Sulfide ores such as chalcopyrite ((CuFeS_2)) are converted to copper by a different method from silicate, carbonate or sulfate ores. Chalcopyrite (also known as copper pyrites) and similar sulfide ores are the commonest ores of copper.Web
Metal ores are generally oxides, sulfides, silicates (Table (PageIndex{1})) or "native" metals (such as native copper) that are not commonly concentrated in the Earth's crust, or "noble" metals (not …Web
Copper can be extracted from non-sulfide 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 dilute sulfuric acid to produce a very dilute copper (II) sulfate solution. Concentration of the copper (II) sulfate solution by solvent extraction.Web
The copper concentrates from sulfide ores are usually produced by flotation and then processed by pyrometallurgical or hydrometallurgical methods to extract the copper [3,9,10]. Froth flotation is widely used to separate sulfide minerals from gangue minerals such as quartz (SiO 2 ), based on the surface properties of minerals.Web
Sulfide ores, which are generally mined from underground and often found in conjunction with copper-bearing ores, contain copper–iron sulfides in association with nickel–iron sulfides. The principal sulfide mineral of nickel is pentlandite [(NiFe) 9 S 8 ].Web
Pyrite is the dominant sulfide in porphyry copper deposits, though it is chalcopyrite that is the most important ore mineral, along with bornite and various binary copper sulfides. ... sphalerite and galena are …Web
Copper sulfide ores are at a disadvantage when it comes to chemical methods of extraction, since the sulfides are barely soluble in acid. To free copper from these ores, refiners need to turn up ...Web
The ores of sulfide copper-nickel, copper-pyrite deposits, and ores of copper sandstones and slates are primarily pro-cessed abroad. The amount of copper in copper sand-stones and slates varies from 1 to 6%, in sulfide cop-per-nickel ores from 1.1 to 4.9%, in copper-pyrite ores from 0.1 to 3%, and in copper-porphyry ores from 0.4 to 1.2%.Web
The flotation concentrate is then dewatered and filtered to produce a filter cake that is sent to a copper smelter. Copper processing - Ores, Refining, Smelting: Principal forms in which copper ores are found include native copper, porphyry copper, massive deposits, and mixed ores. Native copper is simply the metal found unadulterated in nature.Web
Mesophilic bioleaching has been used at an industrial scale for secondary copper sulfide ores, but not for the primary ones like chalcopyrite, given the low copper recovery and slow kinetics (Córdoba et al., 2008). For low-grade primary copper sulfide ores, a few industrial bioleaching applications are in the advanced stages to make the …Web
Copper sulfide ores, on the other hand, are generally processed using pyrometallurgy. This involves the application of heat to extract and purify copper from copper sulfide ores in four basic steps: froth flotation, thickening, smelting, and electrolysis. Froth flotation is the first step, where chemicals are used to separate the copper from ...Web
In general, sulphide copper ores have been beneficiated using flotation in an economic way, and the oxide minerals in the sulphide deposit are ignored because of their lower tenor and complexity in mineralogy . The issue of the continual depletion of copper sulphide deposits shifted the focus of researchers to beneficiate the low-grade …Web
There are two main copper ore types of interest, copper oxide ores and copper sulfide ores. Both ore types can be economically mined, however, the most common source of copper ore is the sulfide ...Web
Copper occurs both in combined state and free state and also in many ores. The important ores of copper are copper pyrites ((CuFeS_2)), cuprite and copper glance. The copper ores are mostly found in the north of India. The extraction of copper also involves many steps.Web
It is a secondary copper mineral that forms through the weathering and alteration of primary copper sulfide minerals. Chalcocite is an important source of copper in some deposits, particularly those with high-grade ores. Covellite: Covellite (CuS) is a copper sulfide mineral that is usually found in the oxidized zones of copper deposits. It …Web
Ores containing as little as 0.4% copper can be mined profitably in open-pit mining, but underground mining is profitable only if an ore contains 0.7%-6% copper. The oxidized ores, such as cuprite and tenorite, can be reduced directly to metallic copper by heating with carbon in a furnace, but the sulfide ores, such as chalcopyrite and ...Web
copper sulfide ore: A copper-containing ore that is typically a mixture of copper carbonate, sulfate, phosphate, and oxide minerals and secondary sulfide minerals. Includes chalcocite and chalcopyrite. Typically processed using pyrometallurgy, although low-grade ores may sometimes use steps from the hydrometallurgy process.Web
The ratio of the copper content of oxide to sulfide ores is about 1:4 in Peru and 1:3 in Chile . Further information on the geology of porphyry copper ore deposits and its implications for metal recovery via biomining can be found elsewhere [36, 179].Web
Pyrite, low-grade sulfide ores, and concentrates are used as sulfidizers. As a rule, sulfidization is combined with reduction [8,9,10,11,12]. The use of copper-poor high-ferrous sulfide materials allows, if the necessary conditions are created, effective cleaning of copper and copper–nickel smelting slags.Web
15.2.2 Leaching of Copper Sulfide Minerals. Copper sulfide minerals require the use of acid and an oxidizing agent to break the mineral lattice and release Cu 2+ into ... Chalcopyrite is another major mineral for nickel sulfide ores that must be considered when choosing extractive processes. Major nickel sulfide deposits are found in Canada ...Web
Jhunalyn Parantar. Sulphide ores of copper are insoluble in dilute sulphuric acid leaching solutions, but a very high extraction can be obtained if the copper ore is in the oxidized condition. The problem is to convert the sulphide into the oxide form. This can be done by giving the sulphide ore an oxidizing-sulphatizing roast.Web
Whilst some copper ores are amenable to hydrometallurgy, chalcopyrite, the main copper mineral, is challenging to process in aqueous solutions due to surface pa Jump to main content . Jump to site search ... Copper is predominantly recovered from sulfide ores by pyrometallurgy – an energy intensive process requiring capture and treatment of ...Web
Our FLOTANOL™ frothers are customized to help you achieve the right froth to maximize recovery of coarse or fine materials, and our FLOTICOR™ additives can handle difficult ores with high viscosity pulps or undesirable contaminants. FLOTICOR™ DP sulfide depressants are efficient NaSH replacements to depress copper in the flotation of ...Web
Copper sulfides (and native copper) are leached by Fe3+, also assisted by direct bacterial action: (15.11a)2FeS2+7O2+2H2O→2Fe2++2SO42−+2H2SO4 (15.11b)O2+4Fe2++4SO42−+2H2SO4→4Fe3++6SO42−+2H2O (15.11c)Cu2S+10Fe3++15SO42−+4H2O→2Cu2++10Fe2++12SO42−+4H2SO4 From: …Web
Copper processing is a complex process that involves many steps as the manufacturer processes the ore from its raw, mined state into a purified form for use in many industries. Copper is typically extracted from oxide and sulfide ores that contain between 0.5 and 2.0% copper.Web
