Refractory Technology
Chrome magnesite is not used in the

Wear out lining of steel melting furnaces
Aluminium melting furnaces
Inner lining of L.D. converter
All of these

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Refractory Technology
Thermal conductivity of refractory bricks

Is independent of its porosity and is maximum for insulating bricks
Increases with the amount of air entrapped in pores
Increases with decrease in porosity
Decreases with decreases in porosity

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