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प्रश्न
What are the processes used for the purpose of conversion of concentrated ore into its oxidised form?
लघु उत्तरीय
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उत्तर
The concentrated ore is converted into its oxidised form by the following processes:
- Calcination: The ore is heated in the absence of air. Moisture, volatile impurities and organic matter are removed. Carbonates are converted into oxides.
- Roasting: The ore is heated strongly in the presence of excess air. Sulphide ores are converted into oxides and impurities are removed as gases.
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