Civil Engineering - Building Materials - Discussion

43. 

If the iron ore contains clay as an impurity, the flux added during calcination, is

[A]. clay
[B]. lime stone
[C]. argillaceous iron ore
[D]. all the above.

Answer: Option B

Explanation:

No answer description available for this question.

Sumit said: (Aug 10, 2019)  
Why we use lime stone?

Vivek said: (Aug 19, 2019)  
I think that lime will decompose to clay.

Thor said: (Feb 25, 2020)  
I think caco3 calcinate into cao (quick lime) which is unstable. And cao reacts with clay to form slag.

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