Abstract: A method and apparatus are provided for controlling slag in a trough of a tilting furnace or in a free-standing tilting vessel. On a tilting furnace, the apparatus is mounted on a trough extending from the furnace tap hole and has a reservoir for receiving flow of molten metal and slag from the trough. The reservoir has a slag opening. One of its walls functions as a dam with a bottom opening. A passage extends from the bottom opening along a weir which terminates at an elevation above the bottom opening but below the slag opening. The molten metal flows over the weir and out of the device. The slag is retained in the reservoir and is discharged from the reservoir through the slag opening. In the free-standing tilting vessel, there is a reservoir, slag opening, dam portion, bottom opening, passage and weir, of a substantially similar design as that of the apparatus attached to a trough of a tilting furnace.

Abstract: A method and apparatus are provided for separating molten metal and slag from a rotating furnace. The apparatus includes a vessel having a reservoir which is positioned to receive a free-falling flow of molten metal and slag as it exits a tap hole in the furnace. The reservoir has a predetermined flow path therethrough, a molten metal outlet, a slag opening and a drain hole. The flow path includes a first portion having an open top for receiving the flow of molten metal and slag. The first portion is configured to eliminate turbulence caused by the free-falling flow of molten metal and slag into the reservoir and to permit separation of the molten metal from the slag wherein the slag floats on top of the molten metal. The molten metal is collected from the metal outlet for further processing and the slag is collected for disposal.

Abstract: A method and apparatus are provided for controlling slag in a tilting furnace. The apparatus is mounted on a trough extending from the furnace tap hole and has a reservoir for receiving the flow from the trough. The reservoir has a slag opening and a bottom opening. A passage extends from the bottom opening along a weir which terminates at an elevation above the bottom opening but below the slag opening. The molten metal flows over the weir and out of the device, and the slag is retained in the reservoir and is discharged from the reservoir through the slag opening.

Abstract: Method and apparatus for controlling slag in a tilting furnace is provided. The apparatus comprises a discharge trough, lateral opening, dam, weir, discharge passage, discharge passage gate, and slag gate. The method comprises tilting the furnace to discharge molten metal and slag into the discharge trough, damming and retaining slag in the discharge trough while allowing molten metal to flow through the discharge passage and out of the discharge trough, closing the discharge passage with the discharge passage gate, and opening the slag gate to allow slag to flow out of the discharge trough the lateral opening.

Abstract: A method and apparatus for controlling slag in a tilting furnace are provided. The apparatus comprises a trough having a lateral opening, a discharge outlet, and a passage for defining a non-linear flow path between the lateral opening and the discharge outlet. The method comprises the steps of tilting the furnace to discharge molten metal and slag into the trough, directing the flow of the molten metal through the flow path in the trough, damming and retaining the slag in the trough while permitting the molten metal to flow out of the trough, and discharging the retained slag through the lateral opening in the trough.