extraction of copper using silica

Enrichment of trace amounts of copper(II) ions in water

Aug 06, 2008· Quantification of ultratrace amounts of copper by using offline solid phase extractionflame atomic absorption spectrometric determination through the octadecyl silicabonded phase membrane (OSPM) C18 disks impregnated with 2,2'[ethane1,2diylbis(thio)]dianiline. Mohammadhosseini M, Soliemani E

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The addition of silica during the extraction of copper

The addition of silica during the extraction of copper from its sulphide ore (1) converts copper sulphide into copper silicate (2) converts iron oxide into iron silicate (3) reduces copper sulphide into metallic copper (4) reduces the melting point of the reaction mixture

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Solid phase extraction of copper(II) ions using C18silica

These ligands are used as modifier of octadecyl silica membrane disks for separation and preconcentration of trace amou Solid phase extraction of copper(II) ions using C18silica disks modified by oxime ligands J Hazard Mater. 2010 Jul 15;179(13) 28994.

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What is the role of silica in the extraction of copper

Ores of copper contain iron oxide as an impurity. Silica reacts with iron oxide and forms iron silicate, which is removed as slag. In the smelting process such chemical reactions are taking place 1) Oxidizing of the copper pyrite 2 CuFeS 2 (s) + 3 O 2 (g) 2 FeO (s) + 2 CuS (l) + 2 SO 2 (g) 2) Conversion of iron oxides and sulfides into molten slag

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Solid Phase Extraction of Ultra Traces Copper (II) using

A simple, reliable and rapid method for preconcentration and determination of copper using octadecyl silica membrane disk modified by a recently synthesized Schiff base (N,Nbis(2hydroxy4 methoxybenzaldehyde)2,6diaminopyridine) and flame atomic absorption spectrometry is presented.

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Solid phase extraction of copper(II) ions using C18silica

Jul 15, 2010· In this study we report a rapid, selective, highly sensitive and efficient method for the extraction and preconcentration of trace amounts of copper(II) ions from aqueous media using octadecyl silica membrane disks modified with two synthesized oximes called 5tertbutyl2hydroxybenzaldehyde oxime (L 1) and 3,5 ditertbutyl2hydroxybenzaldehyde oxime (L 2) and its

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The Removal of Copper Ions from Aqueous Solutions Using

(1999). The Removal of Copper Ions from Aqueous Solutions Using Silica Supports Immobilized with 2Hydroxy5nonylacetophenoneoxime. Separation Science and Technology Vol. 34,

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EXTRACTION OF COPPER

EXTRACTION OF COPPER FROM SULPHIDE ORE Large amount of copper are obtained from copper pyrite (CuFeS2) by smelting. Ores containing 4% or more copper are treated by smelting process. Very poor ores The roasted ore is mixed with coke and silica (sand) SiO 2 and is introduced in to a

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(PDF) Extraction of copper ions using silica gel with

Extraction of copper ions using silica gel with chemically modified surface.pdf. Available via license CC BYNCND 3.0. Content may be subject to copyright. Chemical P ap ers 62 (3) 255259 (2008)

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Extraction of copper by smelting uses silica as an

Extraction of copper by smelting uses silica as an additive to remove >. 12th. > Chemistry. > General Principles and Processes of Isolation of Elements. > Thermodynamic Principles of Metallurgy. > Extraction of copper by sme...

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Solid phase extraction of copper(II) ions using C18silica

Jul 15, 2010· Solid phase extraction of copper(II) ions using C18silica disks modified by oxime ligands. Dindar MH(1), Fathi SA, Yaftian MR, Noushiranzadeh N. Author information (1)Phase Equilibria Research Laboratory, Department of Chemistry, Faculty of Science, Zanjan University, P.O. Box 45195313, Zanjan, Iran.

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Solid phase extraction of copper(II) ions using C18silica

5Tertbutyl2hydroxybenzaldehyde oxime (L1) and 3,5 ditertbutyl2hydroxybenzaldehyde oxime (L2) are synthesized and characterized by conventional spectroscopic methods. These ligands are used as modifier of octadecyl silica membrane disks for separation and preconcentration of trace amounts of copper(II) ions, followed by sulfuric or nitric acid elution and flame atomic absorption...

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Solid Phase Extraction of Copper(II) by Modi ed

of water samples using atomic absorption spectrophotometry was investigated. Copper(II) ions from water samples were preconcentrated by solid phase extraction using octadecyl silica membrane disks modi ed with3f2[2(2hydroxyimino1methylpropylideneamino)ethylamino]ethyliminogbutan2one oxime, (H 2mdo). The experimental conditions

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copper extraction process from copper ore

Copper Smelting means that the concentrated ore is heated strongly with silicon dioxide (silica), calcium carbonate (CaCO 3) and air in a furnace. The major steps in the extraction of copper are Copper in Chalcopyrite is reduced to copper sulphide. Just like in Blast Furnaces, calcium carbonate

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Extracting copper from copper(II) carbonate Experiment

Malachite is a copper ore consisting mainly of basic copper(II) carbonate, CuCO3.Cu(OH)2. In this experiment, students learn how to produce copper from copper(II) carbonate by heating it to produce copper(II) oxide, which is then reduced to the metal using carbon as a reducing agent.

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Extraction of copper ions using silica gel with chemically

May 03, 2008· Up to10%cash back· Solid phase extraction of copper (II) by modified octadecyl silica membrane disks with 3 {2 [2 (2hydroxyimino1methylpropylideneamino)ethylamino]ethylimino}butan2one oxime. Turkish Journal of Chemistry, 27, 649656. CAS Google Scholar.

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Solid phase extraction and determination of ultra trace

Jun 01, 2001· A simple and selective method for rapid extraction and determination of trace amounts of copper(II) ions using octadecylbonded silica membrane disks modified with 11hydroxynaphthacene5,12quinone and flame atomic absorption spectrometry is presented.

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Silica is added to roasted copper ore during extraction in

Silica is added during smelting in order to remove iron oxides from copper sulphide and oxides. During roasting the iron sulfides react with oxygen (in air or oxygen enriched air) to produce iron oxides (mainly as F e O, but with some magnetite (F e 3 O 4 )) and sulfur dioxide.

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Extraction of copper from complex carbonaceous sulfide ore

Under optimized highpressure leaching conditions, a high copper extraction of over 97% was achieved with a copper concentration of 2.43 g/L in the PLS. (vi) Over 99.9% copper was precipitated from the PLS using NaSH sulfidization, at a Cu NaSH molar ratio of

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What is the role of silica in the extraction of copper

May 11, 2013· The role of silica in the metallurgy of copper is to remove the iron oxide obtained during the process of roasting. If the sulphide ore of copper contains iron, then silica (SiO 2) is added as flux before roasting. Then, FeO combines with silica to form iron silicate, FeSiO 3 (slag).

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