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role of silica in extraction of copper

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 CuFeS2 (s) + 3 O2 (g) → 2 FeO (s) + 2 CuS (l) + 2 SO2 (g) 2) Conversion of iron oxides and sulfides into molten slag: FeO (s) + SiO2 (s) → FeSiO3 (l) 2 FeS (s ...

What is the role of silica in the extraction of copper ...

FeO+{SiO}_{2} {FeSiO}_{3})Thus, the role of silica in the metallurgy of copper is to remove ferrous oxide as ferrous silicate slag. If the sulphide ore of copper contains iron, then silica ( left(SiO2 right)) is added as flux before roasting. | Snapsolve

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Answer (1 of 2): Silica, or silicon dioxide (SiO₂), is used during the extraction of copper from its ores by flash smelting [1] because it forms a low-melting slag [2] that can be easily separated as a glass-like semi-solid material to get rid of unwanted metal oxides. Copper ores are mostly mad...

State the role of silica in the metallurgy of copper.

Feb 07, 2019 · The role of silica in the metallurgy of copper is to remove the iron oxide obtained during the process of roasting as 'slag'. 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).

What is the role of silica in extraction of Cu from copper ...

What is the role of silica in extraction of Cu from copper pyrite ore? Answer: Silica (SiO2) is used in the processes of smelting of copper pyrite (CuFeS2) ore and in conversion of produced copper matte (refined copper sulfide) into a crude metal as a flux (purifying agent). It reacts with solid impurities, such as iron oxide, and forms a ...

What is the role of silica in the extraction of copper ...

In the extraction of copper, silica is used for removing impurity, it acts as a flux and combines with the impurities such as FeO resulting in the formation of slag.(

role of silica in extraction of copper

What is the role of cryolite in the metallurgy of aluminium? Adsorption of the commercial copper extraction reagent LIX860 was studied using silica and phlogopite mica as model adsorbents and isooctane and isooctane/toluene mixture as model diluents to investigate the reasons which may contribute to the accumulation of solid fine particles at the interface between the aqueous and organic ...

Describe the role of the following in the process ...

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

State the role of silica in the metallurgy of copper ...

Dec 21, 2017 · The role of silica in the metallurgy of copper is to remove the iron oxide obtained during the process of roasting as ‘slag’. 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).

Roles of Residual Silanol in Solid Phase Extraction of ...

Roles of Residual Silanol in Solid Phase Extraction of Copper to Octadecylsilyl Silica in the Presence of Acetylacetone Shizuka NASU, Satoshi OHMURO, Takashi Y ASUI, and Akio Y UCHI† Graduate School of Engineering, Nagoya Institute of Technology, Gokiso, Showa, Nagoya 466–8555, Japan

Explain the role of each of the following.(i) NaCN in the ...

II) The role of silica(S i O 2 ) in the extraction of copper is to remove the FeO obtained in roasting. So, silica is added before roasting as flux to remove iron impurity. So, FeO reacts with silica leading to form ferrous silicate as slag.

Explain the role of each of the following: (i) NaCN in the ...

(ii) Copper matte contains Cu 2 S and FeS. In the blast furnace, copper matte is added with powdered coke and silica. The oxidation of ore takes place in this process. As a result, cuprous oxide and ferrous oxide are produced. The role of silica in this process is to remove the iron oxide obtained as ‘slag’.

Samacheer Kalvi 12th Chemistry Solutions Chapter 1 ...

Jan 20, 2020 · The role of silica in the extraction of copper is to remove the iron oxide obtained during the process of roasting as slag. If the sulphide ore of copper contains iron, the silica (SiO 2) is added as flux before roasting. Then, FeO combines with silica to form iron silicate, FeSiO 3 (Slag). 2.

NCERT Solutions for Class 12 Chemistry Chapter 6 - General ...

Q9. State the role of silica in the metallurgy of copper. Solution: Copper pyrites are converted to a mixture of Cu 2 O and FeO during roasting. Acidic silica is added during smelting to separate the FeO from the mixture. SiO 2 and FeO forms FeSiO 3 (slag) which floats on the molten matter. FeO + SiO 2 ⇒ FeSiO 3 (slag) Q10.

What is the role of silica in the metallurgy of copper ...

Mar 06, 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).

Important Questions for CBSE Class 12 Chemistry - General ...

Question 54. Explain the role of each of the following in the extraction of metals from their ores: (i) CO in the extraction of nickel. (ii) Zinc in the extraction of silver. (iii) Silica in the extraction of copper. Answer: (i) Impure nickel reacts with CO to form tetracarbonyl nickel

Silicon - Wikipedia

Silicon is a chemical element with the symbol Si and atomic number 14. It is a hard, brittle crystalline solid with a blue-grey metallic lustre, and is a tetravalent metalloid and semiconductor.It is a member of group 14 in the periodic table: carbon is above it; and germanium, tin, lead, and flerovium are below it. It is relatively unreactive. Because of its high chemical affinity for oxygen ...

Silica Membrane - Explore the Science & Experts | ideXlab

The Silica Membrane used was prepared via a chemical vapor deposition method, using DMDPS as a precursor, and Pt/Al2O3 catalysts were employed and loaded inside the tubular Membrane. During the 1054 h of continuous operation, an equilibrium shift was stably demonstrated, because of the stable extraction of the produced H2 from the reaction side ...

Determination of Cadmium in Mineral Water Samples by ...

Oct 07, 2021 · This study presents an analytical strategy named silica nanoparticles (Si-NP) based pipette tip solid phase extraction (PT-SPE) method for the trace level determination of cadmium in mineral water samples. Slotted quartz tube flame atomic absorption spectrophotometry (SQT-FAAS) was used to determine the cadmium analyte. Si-NPs synthesized from rice husk were used to

(ii) What is the role of silica in the extraction of copper

(ii) What is the role of silica in the extraction of copper ? (iii) What type of metals are generally extracted by electrolytic method ? Post Answer. Answers (1) S Sumit (i) forms a volatile complex Nickel tetracarbonyl, leaving behind impurities. The nickel tetracarbonyl complex is heated to a higher temperature, decomposes to give pure metal. ...

Mitigating Effects of Silica in Copper Solvent Extraction

the effects of silica in copper solvent extraction through chemical means. It has no adverse effects on the chemical properties of the extractant system or the downstream electrowinning, but exhibits a remarkable effect in improving the physical properties of the solvent-extraction system.

What is the role of silica in metallurgy of copper?, Chemistry

What is the role of silica in metallurgy of copper?, Chemistry. Assignment Help: during the process of extraction of pure copper from copper pyrite,SiO2 acts as acidic flux which combines with iron oxide (FeO) to form iron silicate (FeSiO3). CuFeS2 + heat ---> Cu2s + FeS + SO2 FeS + O2 ----> Feo FeO + SiO2 ----> FeSiO3.

Tell me role of Silica in Metallurgy of Copper "? - askIITians

Tell me role of Silica in Metallurgy of Copper "? during the process of extraction of pure copper from copper pyrite,SiO2 acts as acidic flux which combines wi

Why copper matte is put in silica lined ... - SaralStudy

Copper matte is put in a silica-lined converter to remove the remaining FeO and FeS present in the matte as slag (FeSiO 3). Also, some silica is added to the silica-lined converter. Then, a hot air blast is blown. As a result, the remaining FeS and FeO are converted to iron silicate (FeSiO 3) and Cu 2 S is converted into metallic copper.

state the role of silica in metallurgy of copper ...

Dec 07, 2010 · The role of silica in the metallurgy of copper is to remove the iron oxide obtained during the process of roasting as ‘slag’. 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).

Extraction Of Copper | Mining, Concentration, Smelting ...

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 is added as a flux to create the slag.

Solved Assignment of Extraction FAQ - Weebly

Copper matte is charged into a silica lined converter in extraction of copper. What is the role of silica lining here? (AI 2010 C) 51. Describe the role of the following : Silica in the extraction of copper from copper pyrites ore. (1/3, Delhi 2008 C) DAV CENTENARY PUBLIC

General Principles and Processes of Isolation of Elements ...

Mar 01, 2021 · (ii) What is the role of silica in the extraction of copper? (iii) Which form of the iron is the purest form of commercial iron? (CBSE Delhi 2015) Answer: (i) Zinc is refined by electrolytic refining: In this method, the impure zinc is made anode, while a plate of pure zinc is made the cathode. These are placed in a suitable electrolytic bath ...

NCERT Solutions for Class 12 Chemistry Chapter 6 - General ...

Q9. State the role of silica in the metallurgy of copper. Solution: Copper pyrites are converted to a mixture of Cu 2 O and FeO during roasting. Acidic silica is added during smelting to separate the FeO from the mixture. SiO 2 and FeO forms FeSiO 3 (slag) which floats on the molten matter. FeO + SiO 2 ⇒ FeSiO 3 (slag) Q10.

Important Questions for Class 12 Chemistry Chapter 6 ...

Dec 06, 2019 · Silica acts as acidic flux in the extraction of copper to remove the iron oxide obtained during the process of roasting. To remove FeO, silica is added during smelting. FeO then combines with SiO 2 to form ferrous silicate (FeSiO 3 ) slag which floats over

NCERT Solutions for Class 12 Chemistry Chapter 6 General ...

On passing a current, pure zinc deposits on the copper strip. Q9. State the role of silica in the metallurgy of copper. Ans: Copper pyrites are converted to a mixture of Cu 2 O and FeO during roasting. Acidic silica is added during smelting to separate the FeO from the mixture. SiO 2 and FeO forms FeSiO 3 (slag) which floats on the molten matter.

inorganic chemistry - Extraction of copper from ...

Aug 26, 2021 · Most of the sulfur in the chalcopyrite turns to sulfur dioxide gas. This is used to make sulfuric acid via the contact process (copper extraction and purification). Overall equations for these series of steps are: (1) 2 C u F e S X 2 + 2 S i O X 2 + 4 O X 2 C u X 2 S + 2 F e S i O X 3 + 3 S O X 2. (2) 2 C u F e S X 2 + 3 O X 2 2 C u S + 2 F e O ...

Roles of Residual Silanol in Solid Phase Extraction of ...

Jan 24, 2020 · Equilibrium analysis on solid phase extraction (SPE) of copper ion with Haa to NEC has indicated the adsorption of 1:1 species by the proton replacement reaction with silanol to give [-SiOCu(aa)] at relatively low Haa concentrations and the adsorption of [Cu(aa)2] to silanol, as well as the distribution of [Cu(aa)2] into the ODS phase.