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AP EAMCET202017 Sep 2020Evening ShiftChemistryGeneral Principles and Processes of Isolation of MetalsActual

Which among the following is used as flux in the extraction of iron from oxide ores?

Options

  1. A( SiO ₂ )
  2. B( CaCO ₃ )
  3. C( CaO )
  4. D( CaSiO ₃ )

Correct answer

B. ( CaCO ₃ )

Step-by-step solution

Lime stone ( ( CaCO ₃ ) ) used in the extraction of Fe from haematite in blast furnace get decomposed to ( CaO ), which removes silicate impurity (gangue) of the ore as molten slag. ( aligned & CaCO ₃ CaO + CO ₂ & CaO + SiO ₂ CaSiO ₃ aligned )

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