Civil Engineering - Building Materials - Discussion

32. 

Calcination of iron ores is done

[A]. to remove moisture
[B]. to remove carbonic acid
[C]. by roasting in heaps
[D]. after dressing
[E]. all the above.

Answer: Option E

Explanation:

No answer description available for this question.

Adeel said: (Aug 31, 2020)  
Calcination --> heated strongly in the absence of air in order to drive out the impurities such as sulphur, arsenic, carbon dioxide and moisture.

Masum said: (Oct 24, 2020)  
Anyone explain about roasting in heaps.

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