Extraction of Sn Flashcards by Shreeya Gupta | Brainscape

Q

concentration method (Sn)

A

levigation

2. magnetic separation

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Q

magnetic seperation used for (Sn)

A

to remove tungestates of Fe and Mn

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Q

Oxidation method (Sn)

A

roasting

As impurities

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Q

reduction (Sn)

A

pyrometallurgy

Smelting in blast furnace / reverberatory furnace

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Q

charge (Sn)

A

ore + coke + limestone/flourspar (CaF2)

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Q

SnO2 + C =

A

Sn + CO

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Q

refining (Sn)

A

electrolytic refining
liquefaction/sweating
poling

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Q

electrolyte (Sn)

A

SnSO4 + H2SO4 + hydrosilicic acid (H2SiF6)

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Q

sweating is used for

A

low MP metals

Pb and Sn

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Q

reduction in poling is done by

A

hydrocarbons present in pols of wood

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