Cast Furnace

The furnace body of Cast furnace is mounted in a tilting device driven by a hydraulic system. The tilting axis should be located at the end point of the furnace mouth/spout to prevent the melt from sloshing during pouring.

The design of the furnace cover of Cast furnace should be combined with the fume extraction device. For fume extraction, two different exhaust systems are discussed:

Suction ring: a steel ring with slot-like openings is arranged around the furnace cover. This is particularly effective when the cover is closed. The refractory cover is hydraulically driven during folding or lifting/swiveling movements.

Suction hood: this has become a universal solution, in which the furnace cover is integrated into a foldable hood. The hood can be hydraulically tilted forward and backward without disrupting the connection to the exhaust duct in the tilting axis. This allows fumes to be extracted during all furnace operations, i.e. during charging, melting and superheating, slag removal and tapping.

Taking a coreless induction furnace of Cast furnace as an example, the overall structure of the furnace body within the tilting frame is described, and the furnace cover and fume extraction device are presented. The figure shows an open-cage steel structure enclosing the coil and surrounded by magnetic yokes, which is easy to maintain, together with an advanced tilting bearing and an exhaust line connected to the furnace cover. This combined design ensures good fume extraction even in different positions with the hood.

As a special design solution, the hot furnace body can be replaced quickly after the last heat of molten steel has been poured. By removing the tilting bearing, the connections of the tilting cylinders and disconnecting the cooling water connections, the furnace body can be replaced in approximately two hours; the removed hot furnace body is cooled by a separate cooling system.

A 3D view of the furnace body of Cast furnace removed from the tilting device on the crane ropes; the arrangement of the water tank/reservoir on the furnace platform for intermediate cooling of the furnace coil.

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