MOLTEN METAL CIRCULATION DRIVING DEVICE AND MELTING FURNACE HAVING SAME

摘要

A compact and powerful molten metal circulation driving device that stirs non-ferrous molten metal in a main bath, the device being equipped with: a molten metal driving vessel having a driving chamber that is structured in a sealed state and having an opening that communicates with a molten metal storage chamber; a molten metal driving device that is disposed at the upper part of the molten metal driving vessel and that has a permanent magnet device, which can rotate around a vertical axis line in a state so as to vertically penetrate molten metal in the driving chamber with lines of magnetic force, and has a permanent-magnet-device driving device, which rotates the permanent magnet; and a partition plate that is disposed in the driving chamber in an upright position along the direction in which the driving chamber and the molten metal storage chamber communicate, and that divides the opening to the left and right into a first opening that discharges molten metal and a second opening that sucks in molten metal. An outer end part of the partition plate is located in the region of the opening, an inner end part of the partition plate is located inside the driving chamber, and a molten metal revolution gap is formed between the inner end part and an inner surface of the driving chamber that faces the inner end part.