Carbon-bonded MgO refractories Flashcards

1
Q

What is pitch?

A

~ generated from coal tar or petroleum residue

~ mixed with dead burned MgO and heated to 100C to soften pitch

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2
Q

How are carbon bonded refractories made?

A

~ bricks are pressed and then heated to 400C to PYROLYZE the pitch (volatize and leave a graphite residue)

~ pyrolized bricks are assembled into a furnace structure and fired in-situ

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3
Q

What is pitch used for?

A

~ a BINDER for a mix of graphite flakes and dead burned MgO

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