The purest form of iron is prepared by o...

The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnance. Which iron ore is used to line the furnance? Explain by giving reaction.

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The correct Answer is:

Haematite
`Fe_(2)O_(3) +3C rarr 2Fe +3CO`

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The purest form of iron is prepared by oxidising impurities from cast iron in a reverberatory furnace. Which iron ore is used to line the furnace? Explain by giving reaction.

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 ?

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 :

Which furnace is used for the extraction of iron from haematite ?

Account for the following facts: (a) The reduction of a metal oxide is easier if the metal formed is in the liquid state at the temperature of reduction. (b) Limestone is used in the manufacture of pig iron from haematite. (c) Pine oil is used in the froth flotation process used to concentrate sulphide ores.

Which of the following is the most impure form of iron ?

(ix) Slag coming out at the bottom of a blast furance during extraction of iron form its ore is used in making.

Explain the following (a) CO_(2) is a better reducing agent below 710 K whereas CO is a better reducing agent above 710 K . (b) Generally sulphide ores are converted into oxides before reduction. ( c) Silica is added to the sulphide ore of copper in the reverberatory furnance. (d) Carbon and hydrogen are not used as reducing agents at high temperature. (e) Vapour phase refining method is used for the purification of Ti

Wrought iron is the purest form of iron. Write a reation used for the preparation of wrought iron from cast iron. How can the impurities of sulphur, silicon and phosphorus be removed from cast iron?

ALLEN-METALLURGY-EXERCISE -04

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