Recent Advances in Copper Ore Processing and Extraction
The flotation test results of actual copper sulfide ore showed that pre-magnetized butyl xanthate could increase the copper recovery of copper concentrate by …
(PDF) Flotation of Nickel-Copper Sulphide Ore
The flotation by surface sulphidisation of the oxidized copper-cobalt-bearing ore from Kimpe (1.97% Cu; 0.66% Co) was studied in order to evaluate its behavior by the analysis of its most ...
The role of sulfur in the formation of magmatic–hydrothermal copper …
Essential resources of many rare metals including copper, zinc, molybdenum, silver and gold occur in natural sulfide mineral deposits.Understanding the origin of these metal resources has been limited by a lack of data about the geochemistry of sulfur, the most important and abundant element of ore deposits.We report the first …
Integration assessment of the hybrid sulphur cycle with a …
For example, a composition named as 10% sulphide content indicates that, within the 2% of the total copper-containing ore, the cumulative concentrations of chalcocite, covellite, and chalcopyrite are 10%, while the rest 90% accounts for the …
SULFUR CONTENT OF THE COAL RESOURCES OF THE …
January 1, 1986. The sulfur content of United States coal can be assessed using a variety of approaches. The sulfur content may be expressed in terms of total sulfur in the coal, …
Concentration of high-sulfur copper ore using a three …
The process was tested on Falconbridge nickel ore, assaying 1.92% Ni, and under the best operting conditions, a concentrate was obtained with 13.56% Ni grade …
Concentration of high-sulfur copper ore using a three …
The process was tested on Falconbridge nickel ore, assaying 1.92% Ni, and under the best operting conditions, a concentrate was obtained with 13.56% Ni grade and 74.32% recovery in a single step.
Environmental impact of mining and beneficiation of copper …
7 Citations. Explore all metrics. Abstract. China is a major producer of copper concentrate as its smelting capacity continues to expand dramatically. The present study …
9 Ore Deposits and Economic Minerals – Mineralogy
Ores and ore minerals vary greatly in quality. Ideal ores contain ore minerals. Such ores do not exist, but some come close. Ideal ore minerals contain of the commodity of interest. Native copper, for example, is an ideal copper ore mineral. Ideal ore minerals are, however, uncommon. The most commonly mined ores are not ideal.
Sulfur behavior in chemical-looping combustion using a …
Up to date, no study has been carried out to investigate the effect of sulfur presence in the fuel on the behavior of the copper ore OC. The objective of this work …
The role of sulfur in the formation of magmatic–hydrothermal copper …
Sulfur is arguably the most important chemical element in the formation of ore deposits, because of the chalcophile geochemical nature of most economically important trace metals in the oxide-dominated lithosphere of our planet. Sulfur is a major component in volcanic fluids ( Hedenquist et al., 1993) and magmatic–hydrothermal ores …
Sulphate in freshwater ecosystems: A review of sources, …
Sulphate (SO 4 2-) concentrations in freshwaters have increased globally over the last decades even though a strong reduction in atmospheric sulphur (S) deposition has occurred across large parts of North America and Europe.However, the extent and effects of increased SO 4 2-concentrations in freshwater and terrestrial ecosystems remain poorly …
(PDF) Leaching of Copper Sulphides
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.
Acid leaching of a copper ore by sulphur-oxidizing microorganisms
This study examines the potential for use of biogenic sulphuric acid for leaching of a low-grade Brazilian ore containing 0.64% copper occurring as brochantite, Cu 4 SO 4 (OH) 6, and as malachite, Cu 2 CO 3 (OH) 2. Ore was agglomerated with elemental sulphur and sulphur-oxidizing microorganisms. Copper extraction was more efficient …
Leaching of a pyrite-based ore containing copper using
The fact that the amount of iron dissolved is 5.4% (Fig. 2) indicates that approximately 1.1 g of pyrite reacted during the exothermic reaction (the mass corresponding to the dissolution of copper and other metals is negligible due to the high concentration of iron in the ore). Combining the heat absorbed by the solution and the …
Copper complexation and solubility in high-temperature …
Fig. 1 shows the Cu concentrations in the aqueous fluid from dissolution of sulfur-bearing or sulfur-free assemblages in H 2 O + NaCl (±HCl in low concentration) as determined in situ from confocal synchrotron-radiation X-ray fluorescence (XRF) spectroscopy. Only data at 500 and 600 °C are included, at which temperatures …
Recent Advances in Copper Ore Processing and Extraction
The flotation test results of actual copper sulfide ore showed that pre-magnetized butyl xanthate could increase the copper recovery of copper concentrate by 3.06 percentage points and the sulfur recovery of sulfur concentrate by nearly 3 percentage points, and effectively reduce the mutual content of copper and sulfur …
Copper Mining and Processing: Processing Copper …
This process uses a series of physical steps and high temperatures to extract and purify copper from copper sulfide ores, in …
Chemistry of Copper
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.
Recovery of high-grade copper concentrate from sulfur-rich porphyry ore
Using tricarboxystarch as a depressant, a new environmentally friendly closed-circuit beneficiation process for a sulfur-rich copper ore was also designed in this work. The results of batch flotation experiments show that the addition of a low dose of tricarboxystarch under weakly acidic conditions (pH 6) yields a very high grade copper ...
Saturated Dissolved Oxygen Concentration in in situ …
This model showed high accuracy in fitting dissolved oxygen concentrations during different periods of copper sulfide ore bioleaching, indicating that in in situ fragmentation bioleaching, dissolved oxygen concentration and saturation can be predicted by monitoring the temperature, pH, and Fe 2+, Fe 3+, and Cu 2+ …
Behavior of Copper and Sulfur During High-Temperature
An increase in the sulfur consumption leads to a decrease in the concentration of copper in the matte and slag. In the range of sulfur consumption considered, the copper content decreases to less than ~ 0.1% in smelt slag and to ~ 0.2% in converter slag. The concentration of sulfur in the gas is high.
Copper Ore Types: Sulfides vs. Oxides
What are copper sulfide ores? Different methods are used to process copper sulfide ores depending on the concentration of copper within the ore — higher-concentrated ores can be separated via ...
Study of Factors Affecting the Copper Ore Leaching Process
The initial mass of copper m (Cu initial) was calculated from the percentage and mass of the ore loaded in the percolator. The copper mass of each phase was calculated with the use of the standard formula (Formula (2)): m (Cu) = C (Cu)·V. (2) where C (Cu) is the copper concentration and V is the solution volume.
Extraction of copper from complex carbonaceous sulfide ore …
An increase in acid concentration to 1.5 mol/L supported copper dissolution yielding the highest copper concentration in solution of 5.19 g/L and the lowest iron concentration of 2.97 g/L. Thereby, a good selectivity of copper over iron during leaching can be achieved using a high pulp density of 300 g/L.
Quantification of copper, nickel and other elements in copper …
Table 1 shows the concentration of nickel, copper, iron, magnesium, cobalt, and sulfur for each of the 32 samples (the total is not since other major elements such as silicon are not included in the table). The concentrations of the metallic elements were obtained using ICP-90Q while for the sulfur the concentrations were determined …
Copper transport by high temperature, sulfur-rich magmatic vapor
Since porphyry copper deposits are the largest sulfur and copper geochemical anomalies in the continental crust (Gustafson and Hunt, 1975, Clark, 1993), and are associated with subvolcanic felsic intrusions, a genetic relationship between sulfur-rich eruptions and formation of porphyry-type Cu–Au ore deposits has been suggested …
Chemical Composition Data of the Main Stages of Copper
After the flotation stage, the copper concentrate proceeds to a pyrometallurgical route which involves a smelting step, where a molten high-Cu sulfide matte is obtained, followed by a converting step, where iron and sulfur present in the matte are oxidized, producing blister copper, while also generating dust and slag . The blister …
DOI 10.1007/s11015-019-00901-z
case sulfides and oxides in contact with them achieve a similar concentration of non-ferrous metals, wt.%: up to 0.7 Co, 1.5–21.8 Cu, and 1.1–56.6 Zn. Heating a mixture of …
Sulfide Ore
VMS ore-forming fluids are acidic, reduced, 1–3 M chloride solutions in which metals were transported mainly as chloride complexes (Table 3).Before the discovery of black smokers, temperatures of the ore fluids were estimated from rare fluid inclusion data and sulfur isotope fractionation between sulfide mineral pairs. pH values about 1 unit less than …