what is the role of limestone in a process of extraction of iron
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what is the role of limestone in a process of extraction of iron

What is the role of limestone during the extraction of ...

During the extraction of iron from haematite ore, limestone acts as a flux. Limestone decomposes froming CaO which reacts with silica forming slag. C aC O3.

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What is the role of limestone in the extraction of iron ...

What is the role of limestone in the extraction of iron from its oxides? Medium. Answer. It provides the flux C a O which removes the impurity S i O 2 ...

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what is the role of limestone in extraction of iron??

Iron is extracted from its ore, haematite, in a blast furnace. The ore is fed into the top of the furnace along with coke and limestone. ... The limestone decomposes in the hot furnace, forming calcium oxide.

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What is the role of Limestone in the extraction of iron ...

What is the role of Limestone in the extraction of iron from its oxide Fe 2 O 3? Advertisement Remove all ads. Solution Show Solution. In the extraction of iron, a basic flux limestone is used. Limestone decomposes to form CaO which reacts with silica gangue present in the iron ore is acidic in nature to form calcium silicate (slag).

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What is the role of Limestone in the extraction of Iron ...

Aug 13, 2020  In the extraction of iron, a basic flux limestone is used. Limestone decomposes to form CaO which reacts with silica gangue present in the iron

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What is the role of Limestone in the extraction of iron ...

What is the role of Limestone in the extraction of iron from its oxide Fe 2 O 3? Advertisement Remove all ads. Solution Show Solution. In the extraction of iron, a basic flux limestone is used. Limestone decomposes to form CaO which reacts with silica gangue present in the iron ore is acidic in nature to form calcium silicate (slag).

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What is the role of limestone in the extraction of iron ...

Apr 19, 2019  The main role of limestone in extraction of iron is to decomposes in hot furnace and form the calcium oxide. Iron is extracted from its ore, haematite, in a blast furnace. ... The limestone decomposes in the hot furnace, forming calcium oxide.

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What is the role of limestone during the extraction of ...

Solution: During the extraction of iron from haematite ore, limestone acts as a flux. Limestone decomposes froming CaO which reacts with silica forming slag. Limestone decomposes froming CaO which reacts with silica forming slag.

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What is the function of limestone in that extraction of ...

Mostly quoted from Wikipedia Iron ore often has silicon dioxide (sand) impurity which must be removed during the process. To do this limestone is added. The limestone (chemically, calcium carbonate) decomposes in the heat of the furnace to calcium...

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Why is limestone used in the extraction of iron?

23.6k+. 2:15. During metallurgy of iron its, ore coke and limestone are added to the blast furnace. (a) What is the role of limestone? (b) Identify the reducing agent in the extraction of iron during the above process. (c) Identifly slag formed during the above process. (d) What are the different gases liberated in this ...

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The function of limestone in the extraction of iron in the ...

The function of limestone in the extraction of iron in the blast furnace is Options. A) removal of the earthly impurities. B) decomposition of the iron ore. C) conversion of iron (lll) to iron (ll) compounds. D) generation of heat for the process. E) conversion of coke to carbon(ll)oxide

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what is the role of limestone in extraction of iron??

Bhagya B Patil को what is the role of limestone in extraction of iron?? के लिए एक जवाब की आवश्यकता है! अपनी क्वेरी का उत्तर देने के लिए Youth4work पर जाएं!

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ii) what is the role of cryolite in the extraction of ...

(i) Mond’s Process use in the refining of nickel (ii)The melting point of alumina is very high. It is dissolved in cryolite which lowers the melting point and brings conductivity / acts as a solvent. (iii)Limestone is decomposed to CaO ,which removes silica impurity of the ore as slag.

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GCSE CHEMISTRY - Extraction of Iron in the Blast Furnace ...

Extraction of Metals. Extraction of Iron.. Chemistry of the blast furnace ().. Limestone is calcium carbonate (CaCO 3) and it is added to the blast furnace to remove the impurities in the iron ore. Calcium carbonate is decomposed by heat in the furnace to give calcium oxide and carbon dioxide. This is called thermal decomposition (see examples of other carbonates). ...

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What is the role of Coke in the extraction of iron from ...

Actually the basic need of coke is to reduce the Iron oxide to Iron. However Coke is also used to make Carbon dioxide which can trap heat. Carbon dioxide is a greenhouse gas and so it is better at trapping and retaining the heat required for melti...

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iii What is the role of coke in the extraction of iron ...

1 (ii) In the extraction of copper, silica (SiO 2) acts as ‘flux’. It reacts with FeO and removes it as slag (FeSiO 3). FeO + SiO 2 ® FeSiO 3 (Flux) Slag 1 (iii) Wrought iron is the purest form of iron. 1 Q. 17. Write the chemical reactions involved in the process of extraction of Gold. Explain the role of dilute NaCN and Zn in the process.

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Extraction of Iron from its oxide Definition, Examples ...

Smelting method used in the extraction of iron - definition. Smelting is the process in which ore is mixed with purifying or heat generating substance like limestone and coke, they are heated at high temperature in an enclosed furnace. The charge consists of roasted ore, coke and limestone in the approximate ratio of 12:5:3.

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Extracting iron Secondary Science 4 All

Jul 21, 2014  Role of limestone (calcium carbonate) in the extraction of iron. Limestone removes impurities present in the iron ore. This is achieved because, at high temperatures, calcium carbonate will undergo thermal decomposition to calcium oxide. The calcium oxide then reacts with the acidic impurities (mainly silica) present in the iron ore to form ...

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extraction of iron Flashcards and Study Sets Quizlet

Browse 146 sets of extraction of iron flashcards. Study sets Diagrams Classes Users. 16 terms. ic3dew. Extraction of iron. hot air, limestone, coke, iron ore. source of oxygen. reacts with impurities and removes them. form of carbon, displaces the iron.

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What is the Role of Limestone in the Extraction of Iron ...

What is the role of limestone in the extraction of iron from its oxides? Advertisement Remove all ads. Solution Show Solution. Limestone decomposes to form CaO which reacts with silicate impurity in the blast furnace to form slag. CaCO 3 → CaO + CO 2. CaO + SiO 2 → CaSiO 3 (slag)

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Extracting iron Secondary Science 4 All

Jul 21, 2014  Role of limestone (calcium carbonate) in the extraction of iron. Limestone removes impurities present in the iron ore. This is achieved because, at high temperatures, calcium carbonate will undergo thermal decomposition to calcium oxide. The calcium oxide then reacts with the acidic impurities (mainly silica) present in the iron ore to form ...

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GCSE CHEMISTRY - Extraction of Iron in the Blast Furnace ...

Extraction of Metals. Extraction of Iron.. Chemistry of the blast furnace ().. Limestone is calcium carbonate (CaCO 3) and it is added to the blast furnace to remove the impurities in the iron ore. Calcium carbonate is decomposed by heat in the furnace to give calcium oxide and carbon dioxide. This is called thermal decomposition (see examples of other carbonates). ...

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Extraction of Iron Metallurgy Blast Furnace and Reactions

The extraction of iron from its ore is a long and subdued process, that helps in separating the useful components from the waste materials such as slag. What happens in the Blast Furnace? The purpose of a Blast Furnace is to reduce the concentrated ore chemically to its liquid metal state.

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(i) Role of limestone in the manufacture of pig iron from ...

Jan 19, 2019  (i) Role of limestone in the manufacture of pig iron from haematite. (ii) Role of Pine oil in the froth floatation process. - 7710904

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What is the purpose of limestone in a blast furnace? - Quora

limestone is used to remove impurities in the furnace and the main impurity of the blast furnace is silica (sand and rock) which is silicon dioxide. silicon dioxide is a solid at furnace temperatures so it reacts with calcium oxide from the decomp...

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Notes On Extraction Of Iron From Its Oxides - CBSE Class ...

The molten iron obtained in this process contains 4% carbon, along with some other impurities like sulphur and phosphorus. It is called pig iron. Pig iron is melted with scrap iron and coke in the presence of hot air to form cast iron, which contains only 3% carbon.

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ii) what is the role of cryolite in the extraction of ...

(i) Mond’s Process use in the refining of nickel (ii)The melting point of alumina is very high. It is dissolved in cryolite which lowers the melting point and brings conductivity / acts as a solvent. (iii)Limestone is decomposed to CaO ,which removes silica impurity of the ore as slag.

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What is the role of Coke in the extraction of iron from ...

Actually the basic need of coke is to reduce the Iron oxide to Iron. However Coke is also used to make Carbon dioxide which can trap heat. Carbon dioxide is a greenhouse gas and so it is better at trapping and retaining the heat required for melti...

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Write the role of CO in the extraction of Iron.

(4) In the blast furnace, Fe is obtained in the form of pig iron (B) Also, consider the following statements for a roasting process during metallurgy of C u F e S 2 (1) As and Sb impurity evolve in the form of their oxides (2) C u F e S 2 will convert into FeS (3) Some amount of S O 2 is also evolved during the process

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Write down the reactions taking place in different zones ...

Dec 21, 2017  During the extraction of iron, the reduction of iron oxides takes place in the blast furnace. In this process, hot air is blown from the bottom of the furnace and coke is burnt to raise the temperature up to 2200 K in the lower portion itself. The temperature is lower in the upper part.

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Extraction of Iron from Haematite Grade 12 Science Notes

Extraction of Iron from Haematite. 1. Concentration: Haematite ore being oxide ore is concentrated by gravity separation process using hydraulic separator. The oxide is being heavier settles to the bottom while lighter impurities come to the surface and is removed. 2.

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Extraction of Iron Class 12, General Principles and ...

May 15, 2020  Contents1 Occurrence and Principle of Extraction of Iron2 Extraction of Iron2.1 1) Concentration2.2 2) Calcination2.3 3) Smelting3 Preparation of Wrought Iron Occurrence and Principle of Extraction of Iron Iron is the second most abundant metal occurring in the earth’s crust.It is a reactive metal and does not occur in the free state. In combined state []

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Chemistry- 3.4: Extraction of Iron from its Ore Questions ...

Classify each of the following statements about iron extraction in a blast furnace as true or false. a) Slag is denser than iron b) iron ore is a rock that contains purely iron oxide c) limestone is a source of calcium carbonate d) Air is pre-heated before being added through the bottom of the furnace

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