Extraction of Fe Flashcards by Shreeya Gupta

Q

concentration method (Fe)

A

gravity seperation

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Q

oxidation (Fe)

A

both calcination and roasting

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Q

reduction (Fe)

A

pyromettalurgy

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Q

700K (blast furnace - Fe)

A

zone of reduction

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Q

charge (blast furnace - Fe)

A

ore + coke + limestone (flux)

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Q

1100K (blast furnace - Fe)

A

zone of slag formation

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Q

slag =

A

flux + gangue

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Q

flux (blast furnace - Fe)

A

CaO

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Q

1500K (blast furnace - Fe)

A

zone of combustion

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Q

1800K (blast furnace - Fe)

A

zone of fusion

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Q

molten iron (blast furnace - Fe)

A

pig iron (4% carbon)

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Q

cast iron (Fe)

A

3% carbon

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Q

wrought iron (Fe)

A

0.2% carbon

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Q

purest form of iron (Fe)

A

wrought iron

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Q

slag (blast furnace Fe)

A

CaSiO3
Ca3(PO4)2 [ thomas slag ]
used as fertilizers

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Q

reverberatory furnace (Fe)

A

cast iron > wrought iron

Q

main reducing agent - reverberatory furnace (Fe)

A

CO

Q

spiegeleisen

A

alloy of Fe & Mn

steel making

Q

nitriding of steel

A

hardening by N2

Q

tempering of steel

A

heat > slow cool

improve mechanical strength

Q

pickling of steel

A

washing by acid

remove oxide layer

Q

reverberatory furnace (Fe) structure

A

concave part