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Grains of resistor which are divided from a melt is solidified and fractionated, and which are formed of fused magnesia as a main component MgO powder, and process for production of a resistor castable refractory.
Grains of resistor which are divided from a melt is solidified and fractionated, and which are formed of fused magnesia as a main component MgO powder, and process for production of a resistor castable refractory.