Apparatus for purifying metal

Details Apparatus for purifying metal Apparatus for purifying metal

1996-08-02

1998-04-07

Kastler, Scott

Metallurgical apparatus

Means for melting or vaporizing metal or treating liquefied...

Means to melt and separate metal from mass of diverse...

266200, C22B 704

Patent

active

057360960

ABSTRACT:
A metal purifying apparatus comprises a closed melting furnace equipped with a heater, molten metal holding crucible disposed within the furnace, a vertical hollow rotary shaft penetrating through a top wall of the furnace, a packing sealing off a clearance in the shaft penetrating portion of the top wall around the shaft, rotary drive means for rotatingly driving the shaft, a hollow rotary cooling body fixedly provided at a lower end of the shaft and having an interior space communicating with an interior space of the shaft, and a cooling fluid supply source for supplying a cooling fluid to the interior of the cooling body. The rotary shaft has disposed therein a cooling fluid discharge pipe with a lower end positioned below the top wall of the furnace. An outer periphery of the discahrge pipe and an inner periphery of the shaft are spaced apart from each other and define a space portion providing a cooling fluid supply channel for passing therethrough the cooling fluid to be supplied from the source to the interior space of the cooling body. The discharge pipe has an interior providing a cooling fluid discharge channel for discharging therethrough the cooling fluid supplied to the interior of the cooling body.

REFERENCES:
patent: 3861660 (1975-01-01), Ammann
patent: 4747906 (1988-05-01), Shingu
patent: 4948102 (1990-08-01), Otsuka et al.

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