role of sio2 in extraction of copper from copper matte

Describe the role of the following:(i) SiO2 in the ...

(i) In the extraction of copper from copper matte, S i O 2 reacts with iron oxide to form slag of ferrous silicate and is removed. F e O + S i O 2 → F e S i O 3 (ii) In froth floatation process, to separate PbS and ZnS from ores, NaCN is used as depressant.

Describe the role of the following : (i) SiO2 in the ...

Nov 01, 2018 · Describe the role of the following : (i) SiO2 in the extraction of copper from copper matte. (ii) NaCN in froth floatation process.

use of SiO2 in the extraction of copper from copper matte ...

6 years ago. 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 liquid slag with density, smaller than the copper matte.

What is the Role of the Following Compounds- Sio2 in the ...

Role of SiO 2 in the extraction of copper from copper pyrites:. The copper matte containing Cu 2 S and FeS is put in silica lined converter in order to remove impurities as fusible slag. Som silica is also added and hot air blast is blown to convert remaining FeS to FeO, which is removed as slag with silica.

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 the Following Compounds- Sio2 in the ...

Role of SiO 2 in the extraction of copper from copper pyrites:. The copper matte containing Cu 2 S and FeS is put in silica lined converter in order to remove impurities as fusible slag. Som silica is also added and hot air blast is blown to convert remaining FeS to FeO, which is removed as slag with silica.

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.

THE INFLUENCE OF THE SILICATE SLAG COMPOSITION ON

(SiO2, FeO, Fe3O4, CaO, Al2O3) and the content of copper in the matte on resulting copper content in the slag during smelting of the sulfide concentrates in the reverberatory furnace. When comparing results obtained with MLRA model calculations with values measured at industrial level high degree of fitting is obtained (R2 = 0.974).

State the role of silica in the metallurgy of copper.

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).

Describe the role of ) NaCN in the extraction of gold from ...

Click here👆to get an answer to your question ️ Describe the role of ) NaCN in the extraction of gold from gold ore. (ii) Sio, in the extraction of copper from copper matte. (iii) Iodine in the refining of zirconium. Write chemical equations for the involved reactions.

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’.

METALLURGY OF COPPER-EXTRACTION OF COPPER-BLISTER COPPER

Copper metal is extracted from molten matte through bessemerization . The matte is introduced in to Bessemer converter which uphold by tuyers. The air is blown through the molten matte. Blast of air converts Cu2S partly into Cu2O which reacts with remaining Cu2S to give molten copper.

inorganic chemistry - Extraction of copper from ...

Aug 26, 2021 · The oxygen potential generally increases as the copper content of the matte is increased. Thus the loss of copper as oxide increases as the copper content of the matte increases. On the other hand, the solubility of copper sulfide in slag decreases as the copper content of the matte increases beyond about 40%.

NCERT Exemplar Solutions Class 12 NCERT Exemplar Solutions ...

(ii) Copper matte contains Cu2S and ZnS. (iii) The solidified copper obtained from the reverberatory furnace has blistered. appearance due to evolution of SO2. during the extraction. (iv) Zinc can be extracted by self-reduction. Solution: Option (i) and (iii) are the answers. 26. In the extraction of chlorine from brine _____.

12.3 Primary Copper Smelting

Converting the matte yields a high-grade "blister" copper, with 98.5 to 99.5 percent copper. Typically, blister copper is then fire-refined in an anode furnace, cast into "anodes", and sent to an electrolytic refinery for further impurity elimination. Roasting is performed in copper smelters prior to charging reverberatory furnaces. In roasting,

role of silica in extraction of copper

Solution - Describe the Roles of the Following: SiO2 in the Extraction of Copper from Copper Matte - PUC Karnataka Science Class 12 - Chemistry Course PUC Karnataka Science Class 12 Department of Pre-University Education, Karnataka

Copper Mining and Extraction Sulfide Ores

The liquid left is a mixture of copper sulfides and iron sulfides. It is called a matte. Stage 5: Conversion of matte to copper blister The liquid matte is oxidised with air to form blister copper in a converter. Blister copper from the smelter is poured into the anode casting moulds.

Describe the role of (i) NaCN in the extraction of gold ...

Apr 24, 2018 · (i) Role of NaCN in the extraction of gold is to do the leaching of gold ore in the presence of air from which the gold is obtained later by replacement. (ii) SiO 2 is added to copper matte to convert the leftout FeS, FeO into slag.

06: General Principles and Processes of Isolation of ...

(ii) Copper matte contains Cu2S and ZnS. (iii) The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of SO2 during the extraction. (iv) Zinc can be extracted by self-reduction. 26. In the extraction of chlorine from brine _____. ΔGV(i) for the overall reaction is

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.

(DOC) EXTRACTION OF COPPER | Joseph Shayo - Academia.edu

EXTRACTION OF COPPER On industrial scale copper is extracted from its sulphide ore known as copper pyrite (CuFeS2) by smelting method. ... FeO + SiO2 ® FeSiO3 + molten mass BESSEMERIZATION Matte is converted into copper in a special furnace which is known as "Bessemer converter". When air is blown through the matte following reactions take ...

Important Questions for Class 12 Chemistry Chapter 6 ...

Dec 06, 2019 · Describe the role of (i) NaCN in the extraction of gold from gold ore. (it) SiO 2 in the extraction of copper from copper matte. (iii) Iodine in the refining of zirconium. Write chemical equations for the involved reactions. (Delhi 2010) Answer:

6. General Principles and Processes of Isolation of ...

Question:3 Why is the extraction of copper from pyrides more difficult than that ... Question:9 State the role of silica in metallurgy of copper. Answer: During roasting, copper pyrites are converted into a mixture of FeO and Cu ... FeO + SiO2 FeSiO3 (slag) Copper matte is than charged into a silica lined converter. Some silica is also added ...

RECENT ADVANCES IN THE EXTRACTION OF COPPER,

separation of iron and copper and extraction of copper are achieved in the converting step without external heat supply or reducing agent. This feature makes the matte route of extraction of copper economical and universally accepted. The copper produced in the converting stage is called blister copper due to its blistery appearance.

Copper Processing | Smelting | Industrial Processes

Smelting is the process of taking the copper concentrate (CuFeS2) and reacting it with SiO2, and O2 to produce slag (waste), copper matte and sulphur dioxide (gas) Too much silica results in the copper being oxidised Too quickly. The matte copper is further treated in a copper converter. Original Description. Copper Processing.

06: General Principles and Processes of Isolation of ...

(ii) Copper matte contains Cu2S and ZnS. (iii) The solidified copper obtained from reverberatory furnace has blistered appearance due to evolution of SO2 during the extraction. (iv) Zinc can be extracted by self-reduction. 26. In the extraction of chlorine from brine _____. ΔGV(i) for the overall reaction is

NCERT Exemplar Solutions Class 12 NCERT Exemplar Solutions ...

(ii) Copper matte contains Cu2S and ZnS. (iii) The solidified copper obtained from the reverberatory furnace has blistered. appearance due to evolution of SO2. during the extraction. (iv) Zinc can be extracted by self-reduction. Solution: Option (i) and (iii) are the answers. 26. In the extraction of chlorine from brine _____.

Metallurgy of copper - SlideShare

Dec 06, 2017 · FeO + SiO2 FeSiO3 (Slag) Cu2O + FeS Cu2S + FeO • Slag floats over the molten matte of copper. 9. BESSEMERIZATION • Matte contains Cu2S and some unreacted FeO along with silica as impurity. • It is converted into copper in a special furnace which is known as "Bessemer converter".

Copper extraction - Wikipedia

Copper extraction refers to the methods used to obtain copper from its ores.The conversion of copper consists of a series of physical and electrochemical processes. Methods have evolved and vary with country depending on the ore source, local environmental regulations, and other factors.. As in all mining operations, the ore must usually be beneficiated (concentrated).

Physicochemical properties of matte-slag melts taken from ...

The properties of liquid slag and matte were studied in the autogeneous extraction of copper which occurs in the Vanyukov’s furnace, applied in the Balkhash copper-smelting plant (Balkhash Group of Mining and Metallurgical Enterprises, Kazakhstan). The density and surface tension of the melts were measured using the maximum-bubble pressure method, and the viscosity of the melts was measured ...

(PDF) Hydrometallurgical Approach for Leaching of Metals ...

Extraction of Copper and Zinc from Waste Printed Circuit Boards. By Albert Adebayo. Precious Metal recovery from waste printed circuit boards using cyanide and non-cyanide lixiviants A review. By Mehmet Özgün and Chandra Sekhar Gahan. Copper Metallurgical Slags –

{Latest Edition} NCERT Exemplar Class 12 Chemistry Chapter ...

Question 6. In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu 2 O with (a) FeS (b) CO (c) Cu 2 S (d) SO 2 Solution: (c) In the extraction of copper from its sulphide ore, the metal is formed by the reduction of Cu2O with Cu 2 S. This reaction completes with the process of autoreduction.

wat is meant by flux in extraction of copper

Sep 26, 2020 · What is the role of sio2 in the extraction of copper from. 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). The iron sulfide is also converted into molten slag (reaction is shown above). More

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