Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories'

Question

Pyrometric cone equivalent (PCE) value (Segar cone) of 'superduty refractories' is more than 33 which corresponds to a temperature of __________ °C.

Options:

A . 1520

B . 1630

C . 1670

D . 1730

Answer: Option D

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