Metallurgical apparatus – Means for melting or vaporizing metal or treating liquefied... – With means to discharge molten material
Patent
1990-12-19
1992-09-08
Kastler, S.
Metallurgical apparatus
Means for melting or vaporizing metal or treating liquefied...
With means to discharge molten material
222598, 222599, B22D 4108
Patent
active
051456346
ABSTRACT:
An apparatus for closing and/or regulating the discharge or tapping of molten metal from a metallurgical vessel includes a refractory outer pipe member having therethrough a discharge passage defining outer and inner openings and a refractory inner pipe member positioned within the outer pipe member, the inner pipe member having therethrough a passage defining outer and inner openings. A first of the pipe members is movable with respect to a second of the pipe members between open and closed positions. In the opened position, the discharge passages of the pipe members are aligned to define a molten metal discharge channel for passage therethrough in a flow direction of molten metal from an inlet opening to an outlet opening of the discharge channel. The cross-sectional area of the discharge channel is a minimum at the inlet opening and is increased between the inlet opening and the outlet opening.
REFERENCES:
patent: 2224514 (1940-12-01), Jung
patent: 3511471 (1970-05-01), Rossi
patent: 4840295 (1989-06-01), Hartley
patent: 5025961 (1991-06-01), Hintzen et al.
Didier-Werke AG
Kastler S.
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