Chemical Composition Data of the Main Stages of Copper …
The chemical composition of Chilean copper sulfide ores in terms of Cu and Fe concentrations are shown in Table 3A, whereas Table 3B shows a more detailed chemical composition of copper sulfide ores from northern Chile. Note that the copper concentration varies between approximately 0.7 and 2.1 wt% depending on the region.
CuS EMPIRICAL Lab ABjb S20.docx
The metal, copper, and the non-metal, sulfur (in the vapor state), will be chemically combined to form a compound, copper sulfide, which will have completely different properties than the copper or the sulfur. Synthesis reaction: metal + nonmetal -> compound copper + sulfur vapor? copper sulfide By using a predetermined amount of copper and …
Copper Sulfide
Copper sulfide ore, which accounts for 80% of the copper resource, is the major source for the metallic copper [1]. The major copper sulfide ores contain chalcopyrite (CuFeS 2 ), bornite (Cu 5 FeS 4 ), covellite (CuS), and chalcocite (Cu 2 S).
Study on improvement of copper sulfide acid soil properties and
The content of heavy metals in acidic soil of copper sulfide mine far exceeds the prescribed limit of heavy metals in the soil of the specific region (as shown in Table 3). The contents of Pb, Cu ...
Synthesis of ternary copper antimony sulfide via solventless
Copper antimony sulfide (CuSbS 2) 10, copper antimony selenide sulfide (CuSbSe x S 2−x) 11 and copper germanium selenide (Cu 2 GeSe 3) 12 have recently been investigated as both nanoflakes and ...
Converting copper sulfide to copper with surface sulfur for
The as-prepared CuS NAs were then transformed into Cu-S NSs via an electrochemical reduction in 1.0 M KOH with a scan rate of 5 mV s −1 (Fig. 2a).The linear sweep voltammetry (LSV) curves showed ...
Treatment of simulation of copper-containing pit wastewater with
A low-cost, long-term and maintenance-free method was put forward to treat simulation of copper-containing pit wastewater which has caused a widespread environmental problem in Yunnan Province, China. The objective of this work was to investigate the treatment of low concentrations of Cu2+ in the mine pit water with sulfate …
An Improved Process for Precipitating Cyanide Ions from the …
The objective of this study is to obtain fundamental information on the mechanism of sulfide precipitation for the removal of copper, zinc, iron and lead hydroxides from barren cyanide solutions. This process involves the use of sodium sulfide (Na 2 S) and sulfuric acid (H 2 SO 4). A better quality Doré will be yielded when all these ions are ...
Minerals | Free Full-Text | Parametric Optimization in …
The dominant challenge of current copper beneficiation plants is the low recoverability of oxide copper-bearing minerals associated with sulfide type ones. Furthermore, applying commonly used …
Progress in bioleaching: part B: applications of microbial
The objective is to adapt the organisms to the harsh environmental conditions (anion and cation concentrations, temperature, agitation and aeration forces, and solid concentration) of the commercial-scale reactor environment. ... Secondary copper sulfide heap leaching is generally considered a successful application of bioleaching, as copper ...
Copper Mineral Leaching Mathematical Models—A Review
In addition to copper oxides, it is applied to a wide range of minerals, including copper sulfide minerals such as chalcocite [12,13,14,15], covellite [16,17,18,19,20] or chalcopyrite [21,22,23]. Likewise, leaching can be applied to non-metallic minerals such as saltpeter [24,25] or to the recovery of soils [26,27,28]. Leaching is typically ...
Chemistry of Copper
The copper ores are mostly found in the north of India. The extraction of copper also involves many steps. The ore used for extraction is copper pyrites, which is crushed, concentrated and then heated in the presence of air. During heating the moisture gets expelled and the copper pyrites gets converted to ferrous sulfide and cuprous …
Copper sulfide nanostructures: synthesis and biological …
Synthetic methods for the production of copper sulfide nanoparticles. This review article includes a study of a wide range of nanostructures, including 3D nanomaterials, 2D …
Copper(II) sulfide | CuS | CID 14831
. Description. Covellite is a mineral with formula of Cu 1+ S or CuS. The IMA symbol is Cv. RRUFF Project. Copper (II) sulfide is a chemical compound of copper and sulfur. It occurs in nature as the mineral covellite. Copper is a chemical element with the symbol Cu and atomic number 29.
Recovery of Cobalt and Copper From Complex Sulfide …
objective of developing an alternative process for recovering cobalt and copper from complex sulfide concentrates. Processes currently used de pend largely upon precipitation techniques to remove impurities and re cover cobalt from sulfate liquors prepared by oxidative pressure leaching of the sulfide concentrates. The Bureau …
Synthesis of copper sulphide and copper nanoparticles with
The variation of size was observed with variation in w for copper sulphide and copper. Product specifications were analyzed using transmission electron microscope imaging, ... giving precise control over the product size was to be used to prepare the nanomaterial to fulfill the abovementioned objective. The synthesis of nanoparticles till …
17.4: Solubility of Salts
Solubility and Common ion Effect. In section 17.1.3 solubility was introduced as an example of the common ion effect, and this problem was explained using ICE table and Le Chatelier's Principle.. What is the solubility of Calcium phosphate in a 0.100M sodium phosphate solution? This is the same problem as above except that there is a common …
Geometallurgical Modeling of the Escondida Deposit
Minera Escondida, located in the Antofagasta Region of northern Chile, is the world's largest producer of copper as concentrate and SX-EW cathode. Projects to increase mill and flotation capacity began soon after start-up in 1990 to off-set decreasing copper grade. Subsequent projects had the objective to increase copper production through …
Leaching of Primary Copper Sulfide Ore in Chloride …
Copper extraction from primary copper sulfide ore from a typical porphyry copper deposit from Antofagasta, Chile, was investigated after leaching with a chloride-ferrous media at two temperatures. The …
Sulphidisation of oxides and oxidised sulphides and
Copper sulphide minerals, hosted by the primary and secondary enrichment hydrothermal zones, yield the most copper production in the world. Chalcopyrite, a p-type semiconductor with a band energy gap of about 0.6 eV [ 40 ], is a primary copper sulphide and the most common naturally occurring mineral of the ternary Cu-Fe-S system and the …
Converting copper sulfide to copper with surface sulfur for
Here, authors synthesize sulfur-containing copper nanowire sponges for selective electrocatalytic alkyne semi-hydrogenation using water as the hydrogen source.
Phase Selectivity of Copper Sulfide: Synthesis and Application
Copper sulfides, Cu x S y ( x / y = 1–2), are of great interest for solar cells, gas sensors, biosensors, fluorescent immunosensors, photothermal therapy, …
A Direct Process for Wire Production from Sulfide Concentrates
The project objective is to evaluate, construct, and demonstrate the performance of a novel molten sulfide electrolysis (MSE) process to directly convert copper sulfide concentrate to copper wire using only electricity. The proposed innovation uses a direct MSE process to make liquid copper of high purity and is coupled with a novel
Morphology and Dimension Variations of Copper Sulfide for High
Among metal sulfides, copper sulfides (Cu x S, 1 ≤ x ≤ 2) have attracted considerable attention due to their low cost and high theoretical specific capacity (337–560 mAh g –1). …
Comprehensive Electrochemical-Chemical Study of Copper …
One of the main objectives of this research was to determine the optimum conditions for copper removal from molybdenite concentrates without creating a passive layer that prevents copper dissolution. ... Mineralogical studies indicated that the presence of copper sulfide minerals such as chalcopyrite in molybdenum concentrate as …
The recovery of oxide copper minerals from a complex copper …
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 maximum copper recoveries and grades. The major focus of the study was on the use of two different methods of sulphidisation, viz. slug addition and controlled potential ...
Sulfidation of copper oxide nanoparticles and properties of …
The objectives of this study were to (1) provide mechanistic insights about the transformation of CuO in the presence of sulfide in aqueous solution; and (2) determine the properties and solubility of the resulting sulfidized nanoparticles. ... The XRD patterns for copper sulfide model compounds (CuS and Cu 2 S) and the sulfidized samples were ...
Froth Flotation Principles
Sulphide ores; Metallic oxides; Non-sulphide or non-metallic ores, and in addition, progress is being made with; Industrial applications. The following resume gives a brief insight into the wide field of application under the five general headings just outlined. Flotation of Free Metal Ores
Morphology and Dimension Variations of Copper Sulfide for High
Desired phases of copper sulfide can be prepared at higher temperatures via using MOF of Cu-BTC {[Cu 3 (C 9 H 3 O 6) 2 (H 2 O) 3]} n (HKUST-1) and sulfur placed in a quartz box. Moreover, the electrochemical properties of the composite prepared by this method were found to be excellent, where the specific capacity reached 220 mAh g –1 even ...
Copper Sulfide
Electronic properties of sulfide minerals and floatability. Jianhua Chen, ... Ye Chen, in Electronic Structure and Surfaces of Sulfide Minerals, 2020. 2.1.1 Crystal structure of copper sulfides. Copper sulfide ore, which accounts for 80% of the copper resource, is the major source for the metallic copper [1].The major copper sulfide ores contain …