초록 ▼

A system for controlling the flow rate of the stream from an electroslag refining apparatus is taught. The system includes the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal

A system for controlling the flow rate of the stream from an electroslag refining apparatus is taught. The system includes the introduction of unrefined metal into an electroslag refining process in which the unrefined metal is first melted at the upper surface of the refining slag. The molten metal is refined as it passes through the molten slag. The refined metal is collected in a cold hearth apparatus having a skull of refined metal formed on the surface of the cold hearth for protecting the cold hearth from the leaching action of the refined molten metal. A cold finger bottom pour spout is formed at the bottom of the cold hearth to permit dispensing of molten refined metal from the cold hearth. The flow rate of molten metal through the cold finger apparatus is controlled by coordinating, among other parameters: the rate of melting of the unrefined metal; the hydrostatic head of molten metal and slag above the bottom pour cold finger orifice; the rate of induction heat supplied to the metal within the cold finger apparatus; the rate of heat removal from the metal within the cold finger apparatus through the cold finger apparatus itself and through adjacent gas cooling means; and by applying electromagnetic force to selectively speed up, slow down and/or interrupt the flow of metal through the cold finger apparatus via an electromagnetic orifice, preferably utilizing a processor, such as a computer.

대표청구항 ▼

[ What is claimed is:] [1.]1. A system for controlling the flow of melt from a cold wall induction guide tube mechanism comprising:a funnel shaped cold wall induction guide tube mechanism including a neck having an exit orifice;a skull of melt operatively formed in the mechanism;a reservoir of melt

[ What is claimed is:] [1.]1. A system for controlling the flow of melt from a cold wall induction guide tube mechanism comprising:a funnel shaped cold wall induction guide tube mechanism including a neck having an exit orifice;a skull of melt operatively formed in the mechanism;a reservoir of melt above the mechanism;a stream of melt exiting the exit orifice of the mechanism;means, operatively positioned relative to the mechanism, for dynamically controlling the temperature of the neck of the mechanism at a plurality of cycles per second to correspondingly vary the size of the skull in the neck of the mechanism, wherein the flow of melt from the exit orifice of the mechanism is selectively increased or decreased thereby controlling the rate of the flow of melt from the mechanism.