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The chief ores of iron are haemalite (Fe...

The chief ores of iron are haemalite `(Fe_2O_3)` , magnetite `(Fe_3O_4)` , limonite `(FeO(OH))` and siderite `(FeCO_3)`.In the extraction of iron , oxides ores of iron, after concentration through calcination/roasting in reverberatory furnace are mixed with lime stone and coke and fed into a blast furnace. Here, the oxide is reduced to the metal.
Reducing species in the extractive metallurgy of iron from haematite ore is :

A

CO

B

`CO_2`

C

`Al`

D

CaO

Text Solution

Verified by Experts

The correct Answer is:
A
`3Fe_2O_3+COto2Fe_3O_4+CO_2`
`Fe_3O_4+COto2FeO+CO_2`
`FeO+COtoFe+CO_2`
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The chief ores of iron are haemalite (Fe_2O_3) , magnetite (Fe_3O_4) , limonite (FeO(OH)) and siderite (FeCO_3) .In the extraction of iron , oxides ores of iron, after concentration through calcination/roasting in reverberatory furnace are mixed with lime stone and coke and fed into a blast furnace. Here, the oxide is reduced to the metal. Which of the following is obtained as a slag in the extraction of iron from haematite ore ?

Haematite ore having magnetic property can be separated by magnetic separation In blast furnace, iron oxide is reduced by-

Some of the lower quality ore are mixed with Haematite for Fe extraction like Siderate, Limonite and Magnetic. Roasted ore are mixed with coke and lime stone, finally heated in the blast furnace to get molten Fe. Which of the following reaction is least favoured at the heath?

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