Using more efficient collector to improve the recovery efficiency of fine copper oxide has become imperative as the shortage of copper mineral resources. In this study, the new collector 3hydroxy butyrate-carboxy methyl cellulose xanthate (HCMCX) was synthesized by carboxy methyl cellulose, 3-hydroxy butyrate and carbon disulfide, all of which as raw …
The method used to extract copper from its ores depends on the nature of the ore. Sulfide ores such as chalcopyrite ( CuFeS2 C u F e S 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.
V. A. Taranov. 579 Accesses. 2 Citations. Explore all metrics. Abstract. An analysis of flowsheets for processing sulfide and oxide copper ores, reagent modes, …
The mixed oxide-sulfide copper‑nickel ore used in this study was provided by Jinchuan Group Ltd. (JNMC), China. The ore powders obtained by grinding the crushed ore in a ball mill at 100 r/min for 15 min were sieved into six narrow size ranges: 75–80 μm, 80–96 μm, 96–109 μm, 109–120 μm, 120–150 μm and 150–180 μm, and the main …
A required amount of 75 g/L. sulphuric acid solution was used and 5 g of the ground copper oxide ore with a solid to liquid. ratio of 13%. Leaching parameters such as leaching time from 0.25 – 4 ...
Many of our largest copper deposits contain both sulfide and oxidized copper minerals. The large porphyry mines, with a total copper content of from 1.3 to 2.0 per cent., send to their mills ore with an oxide content of from 0.2 to 0.4 per cent. While the recoveries of the sulfide minerals are considered satisfactory, using modern flotation ...
Grind establishment tests were performed on all three bulk composite ores, sulphide, oxide and blended ore (70% sulphides and 30% oxide). For each ore composite, three 1000 g samples (<2 mm) were ground as a function of time in a sealed stainless steel laboratory rod mill containing stainless steel rods.The rod mill was built by ESSA …
The copper oxide ore of the Yangla Mine in Yunnan, China, with 1.02% copper was subjected to flotation with a mixture of potassium amyl xanthate (PAX) and hydroxamate AM28 as the collector. A rougher concentrate was reported with a 3.19% Cu grade and 38.4% recovery . Another flotation study was carried out on copper oxide ore …
Copper Oxide Ore. Copper also occurs to a lesser extent in oxidized minerals (carbonates, oxides, hydroxy-silicates, sulfates). Copper metal is usually produced from these minerals by leaching, solvent extraction, and electrowinning. These processes are also used to treat chalcocite (Cu2S).
The main raw material is copper sulfide ore, and high-grade copper oxide ore can also be smelted in the pyrometallurgical process. The mining grade of copper sulfide is 0.3–2%, and the average mining grade is approximately 0.81%. The mined ore is crushed and pulverized. Then flotation will separate the copper sulfide concentrate.
The most common cobalt oxide is heterogenite, a hydrated metal oxide with a variable copper and cobalt composition. Heterogenite, which contains cobalt in both Co 2+ and Co 3+ oxidation states, accounts for the majority of the cobalt in the weathered SSH Cu-Co deposits ( Decrée et al., 2015, Vanbrabant et al., 2013 ).
Copper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using sodium sulfide …
In this investigation, a laboratory-scale study to extract copper (Cu) from its oxide ore (0.425–11.2 mm particle size) was conducted using varied sulfuric acid (H2SO4) concentrations (0.05–0.5 M) as a lixiviant. Through a physicochemical and mineralogical analysis of real field ore samples from the Almalyk mine heap site (Tashkent, …
The copper contents in the solutions was from 22 to 26 grs/l. The iron contents in ferrous ions fluctuated between 2 and 5 grs/l, the highest figures corresponding to the starting solution. Washing of the Solutions. The solutions from the leaching process contain more or less Fe2O3 or Al2O3 which depends on the characteristics of the ore …
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 …
The elemental analysis by XRF showed that the copper oxide ore is composed mainly of 10.07% Cu, 0.71% Co, 4.12% Fe, 24.29% Si, 5.20% Mg, 2.50% Al, 1.00% Ca and 0.48% Mn. Results of dissolution ...
The symbol and name for copper are from the Latin cuprum, which literally means "from the island of Cyprus", an early source of copper ore. Before 1982 U.S. pennies were pure copper. Now they are mostly zinc with a thin shell of copper. Most copper that is mined today is refined and drawn into wire for use in the electrical industries.
AbstractCopper oxide ore has a complex composition, and a low recovery rate is often achieved via the traditional sorting method. A new combined process of flotation–high-gradient magnetic separation–leaching is proposed here to recover copper minerals. The test results showed that the flotation process was successful when using …
The choice of copper-ore processing technology depends on its composition, i.e., the sulfide, oxide, carbonate, and copper silicate content. Leaders in copper ore processing include Chile, Peru, the United States, Australia, China, Russia, Mexico, Kazakhstan, Zambia, and Congo. Chile accounted for almost a third of global copper produc-tion in ...
and copper recovery, ore agglomeration was proposed and gradually became utilized in the leaching of laterite-nickel and copper oxide minerals [ 16 – 19 ]. In this process, the qual-
Copper oxide mixed ore (Type 2) – in contrast to Type 1, this ore type contains cuprite, malachite and . azurite as the main copper oxide minerals. Predominantly contains carbonaceous gangue ...
The production of copper metal from oxide ores accounts for nearly 30% of total annual copper produced worldwide. Copper oxide ore deposits represent an attractive exploration target because even low-grade (less than 0.2 wt-% Cu, or less than 2000 ppm) prospects have the potential to produce low-cost copper in an environmentally friendly fashion.
Copper oxides are more abundant near the surface, but are considered low-grade ore, with a lower concentration of copper. …
Copper oxide ore: Copper oxide ore is mainly composed of copper oxide (CuO) and cuprous oxide (Cu2O). This type of ore is of low grade and often coexists with other minerals, making it difficult ...
Copper (Cu) ore is a naturally occurring mineral deposit that contains copper in varying concentrations. It is an important industrial metal that has been used by human civilizations for thousands of years due to its excellent electrical and thermal conductivity, high ductility, and resistance to corrosion. ... Oxide Copper Deposits: …
High-grade copper sulfide ore is mainly processed by pyrometallurgy, while low-grade copper oxide ore is primarily processed by hydrometallurgy. The demand for low-grade …
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Flotation of Gold Ores. Srdjan M. Bulatovic, in Handbook of Flotation Reagents: Chemistry, Theory and Practice, 2010 17.8 Flotation of Oxide Copper–Gold Ores. Oxide copper–gold ores are usually accompanied by iron hydroxide slimes and various clay minerals. There are several deposits of this ore type around the world, some of which are located in Australia …
The copper oxide ore reacts, forming a diluted copper sulfate solution (EPA, 1990). The copper-rich solution is filtered and purified using secondary solvent extraction to isolate the copper sulfate from other dissolved metals in the …
For each flotation test, one kg of the crushed ore has been subjected to wet grinding in ball mill for obtaining granulometry of d 80 of 74 μm and flotation pulp with specific gravity of 1200 g/L. The ore has been initially subjected to talc pre-flotation during 3 min followed by copper–cobalt bulk rougher for 30 min.The talc pre-flotation has been …
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