Device for extraction by pouring with a regulatable flow rate of

Details Device for extraction by pouring with a regulatable flow rate of Device for extraction by pouring with a regulatable flow rate of

1994-04-19

1996-10-22

Czaja, Donald E.

Glass manufacturing

Molten glass dispensing means

Discharge orifice below melt level

65347, 65356, 6537412, 222592, 222600, C03B 526

Patent

active

055672183

ABSTRACT:
Device for the extraction by pouring at a regulatable flow rate a molten material in a cold structure melter. The melter has at least one part of a floor around a pouring orifice cooled by a flow of water and a heat source able to melt the material to be melted. An orifice is provided in the floor of the melter, whose diameter D is equal to or larger than the thickness H of the wall forming the melter. A metal sleeve is provided, whose base has a shoulder which can be adapted to the side walls of the orifice. The sleeve has a central passage forming the pouring tube for the molten material and a clearence is provided between the side walls of the orifice and the base of the sleeve in order to receive an insulating material between the sleeve and the cold floor of the melter. A device is provided beneath the floor of the melter having a cooled, sliding blade, equipped with an actuator controlling its movement in translation along the orifice, thus determining its more or less large opening or closing state.

REFERENCES:
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patent: 2186718 (1940-01-01), Ferguson
patent: 3580714 (1971-05-01), Lucek
patent: 3580976 (1971-05-01), de Bussy
patent: 3912488 (1975-10-01), Sanford et al.
patent: 4017294 (1977-04-01), Sanford et al.
patent: 4351664 (1982-09-01), Bansal
92-227719 Abstract, Derwent for French Patent 2,668,726 (Boen et al), Oct. 1993.
"Glass-Melter Materials: Technical Options for the French Vitrification Process and Operations Experience Authors", By R. Bonniaud (CEA IRDI Marcoule), R. Demay (CEA, IRDI, Fontenay-aux-Roses), R. Richter (SGN, St. Quentin en Evelines), and L. Rozand (COGEMA, St. Quentin en Yvelines)--Vienna Conference of IAEA, Sep. 1986.

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