Patent ID: 7736586

Claim:
A melting furnace with an agitator comprising: a melting furnace, the melting furnace being arranged to be able to contain a melt; and an agitator that agitates the melt by an electromagnetic force, wherein the agitator includes a first electrode that is provided at an arbitrary position of the melting furnace so as to come in contact with the melt contained in the melting furnace, a second electrode that is provided near a bottom wall of the melting furnace so as to come in contact with the melt, a first magnetic field device that is provided outside the melting furnace so as to face the bottom wall of the melting furnace and makes a north pole face the bottom wall, and a second magnetic field device that is provided outside the melting furnace so as to face the bottom wall of the melting furnace and makes a south pole face the bottom wall, and the first and second magnetic field devices are disposed with a gap in a certain direction, the width of the gap is set so that a first flow of the melt and a second flow of the melt collide with each other at a position that corresponds to the groove-shaped gap between the first and second magnetic devices in order that the aluminum melt flows out by the flow along a longitudinal direction between the first and second magnetic field devices, the first flow of the melt is caused by an electromagnetic force generated by both a current which flows between the first and second electrodes and magnetic force lines from the first magnetic field device, and the second flow of the melt is caused by an electromagnetic force generated by both a current which flows between the first and second electrodes and magnetic force lines into the second magnetic field device.