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Refractory Technology

Refractory Technology
Which furnace consumes maximum refractory annually in an integrated steel plant?

L.D. converter
Blastfurnace
Soaking pit
Coke ovens

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Refractory Technology
Vacuum steel degassing units are lined with

Silica bricks
Graphite blocks
High alumina bricks
Low duty firebricks

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Refractory Technology
High porosity refractory bricks have

Poor resistance to the peneration of molten slag, metal & flue gases
Poor heat conductivity & low strength
All of these
Better thermal spalling resistance

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Refractory Technology
Chrome magnesite bricks are

Having higher RUL than silica bricks
Acidic in nature
Neutral in nature
Made by mixing 30% chromite and 70% periclase

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Refractory Technology
Carborundum used for making crucibles for melting non-ferrous metals is chemically

Zirconium sulphate
Silicon carbide
Silicon nitride
Crystalline magnesia

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Refractory Technology
Mixing of ground refractory material and water is done in a __________ mill.

Tube
Ball
Rod
Pug

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