Why is zinc not extracted from zinc oxide through reduction using CO?
Zinc is not extracted from zinc oxide through reduction using coke because high temperature 1100-1200°C a temperature above the boiling point of zinc, is required.
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12.
Out of C and CO, which is a better reducing agent for ZnO?
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13.
What is the role of graphite rod in the electrometallurgy of aluminium?
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14.
Predict conditions under which Al might be expected to reduce MgO.
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15.
Define the term gangue or matrix.
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16.
Define the term flux.
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17.
Deine the term slag.
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18.
Why magnesium oxide is used for the lining in steel making furnance?
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19.
Which process is generally used for the benefication of sulphide ores?
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One Word Answers
20.
An iron ore has impurities which are attracted by magnet. Suggest process for its benefication.