Crucible Furnace

A crucible furnace is used where the requirement of metals is not continuous.  It is used, when molten metal may be required intermittently. 

The crucible is a container made of graphite and clay.  It can withstand very high temperatures.  Crucible furnaces are used to melt non-ferrous metals which have relatively lower melting points.  These furnaces are powered by gas, electricity or coke.

Crucible furnaces are classified into

Tilting furnaces where the crucible is tilted and the molten metal spills out.
Ladle furnaces where the molten metal is removed by means of a ladle.
Bale out furnacez where the crucible is lifted and the molten metal is poured into the mould.