Device for extraction by pouring with a regulatable flow...

C - Chemistry – Metallurgy – 03 – B

Patent

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C03B 7/08 (2006.01) B22D 41/24 (2006.01) C03B 5/00 (2006.01) C03B 5/02 (2006.01) C03B 5/26 (2006.01) C03B 5/44 (2006.01) C03B 7/10 (2006.01) C21C 5/46 (2006.01) F27D 3/15 (2006.01)

Patent

CA 2122291

DESCRIPTIVE ABSTRACT Device for the extraction by pouring at a regulatable flow rate a mol- ten material in a cold structure melter, said melter having at least one part of the floor around the pouring orifice cooled by a flow of water and a heat source able to melt the material to be melted, charac- terized in that it comprises: - in the floor of the melter, an orifice whose diameter D is equal to or larger than the thickness H of the wall forming the melter, - a metal sleeve, whose base has a shoulder which can be adapted to the side walls of the orifice, said sleeve having a central passage forming the pouring tube for the molten material, a clearance being provided between the side walls of the orifice and the base of the sleeve in order to receive an insulating material between said sleeve and the cold floor of the melter, - beneath the floor of the melter a device having a cooled, sliding blade, equipped with an actuator controlling its movement in transla- tion along the orifice, thus determining its more or less large opening or closing state. (Fig. 5)

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