Molten metal scrap submergence apparatus

Patent metadata

Field	Value
Publication number	US-9920992-B2
Application number	US-201314394961-A
Country	US
Kind code	B2
Filing date	Apr 16, 2013
Priority date	Apr 16, 2012
Publication date	Mar 20, 2018
Grant date	Mar 20, 2018

Abstract

A metal scrap submergence device comprising an open top chamber including walls of a heat resistant material, an inlet positioned in a side wall of the chamber, an outlet positioned in the base of said chamber, and a ramp adjacent said side wall of the chamber. The side wall further includes a feature affecting molten metal flow. The feature can include, for example, a baffle, a vane, a passage, a diverging or converging shape and combinations thereof. Similarly, the molten metal flow can be affected by slanting the ramp inwardly or outwardly.

First claim

The invention claimed is:

1. A metal scrap submergence device comprising an open top chamber including walls of a heat resistant material, an inlet positioned in a side wall of the chamber, an outlet positioned in the base wall of said chamber, and a ramp adjacent said side wall of the chamber, said ramp comprising a sloped surface extending from said base to said side wall forming a ledge extending from the side wall having a first end engaging the base and a second end terminating above the base, the ledge extending through at least 180° of chamber circumference, the side wall further including a feature disposed adjacent the ramp for influencing molten metal flow, said feature selected from a baffle, a vane, a diverging or converging side wall shape, and combinations thereof.

2. The device of claim 1 wherein said feature comprises at least one baffle extending toward a center of said chamber from said side wall.

3. The device of claim 2 wherein said baffle is spaced above said ramp.

4. The device of claim 2 wherein said baffle extends continuously around the side wall.

5. The device of claim 2 comprising a plurality of baffles spaced apart on said side wall.

6. The device of claim 5 wherein at least two of said baffles are located at different heights within said chamber.

7. The device of claim 2 wherein said baffle comprises an inclined surface facing the base of said chamber.

8. A metal scrap submergence device comprising an open top chamber including walls of a heat resistant material, an inlet positioned in a side wall of the chamber, an outlet positioned in the base or side wall of said chamber, and a ramp adjacent said side wall of the chamber comprising a sloped surface extending from said base to said side wall forming a ledge extending from said side wall, the side wall further including a a feature for influencing molten metal flow, said feature comprising passage in fluid communication with a dross well, said passage disposed above the inlet and the ramp.

9. The device of claim 1 wherein said ramp comprises a sloped surface extending from said base to said side wall.

10. The device of claim 1 wherein said ledge extends from between 180° and 270° of the chamber circumference.

11. The device of claim 10 wherein said ramp has an inclined slope of between about 5 and 15° between said first and said second end.

12. The device of claim 1 wherein at least generally upward facing surface of the ledge extending from said side wall is one of inwardly or outwardly inclined.

13. The device of claim 1 wherein said feature comprises at least a portion of the side wall being one of inwardly or outwardly inclined adjacent said ramp.

14. A metal scrap submergence device comprising an open top chamber including walls of a heat resistant material, an inlet positioned in a side wall of the chamber, an outlet positioned in a base wall of said chamber, a ramp comprising a 5° to 15° sloped surface extending from said base to said side wall forming a ledge extending from said side wall, the ledge extending through at least 180° of chamber circumference, said ledge includes an at least generally upward facing surface, said surface being either inwardly or outwardly slanted, said device further including a feature for influencing molten metal flow, said feature comprising at least one of a baffle, a vane, and a diverging or converging side wall shape.

15. The device of claim 14 wherein said ledge includes a first edge engaging said side wall and a second edge engaging an inner wall defining said outlet.

16. The device of claim 8 wherein said passage has a diameter less than a diameter of said outlet.

Assignees

• Pyrotek Inc

Inventors

• Henderson Richard S
• Tetkoskie Jason
• Vild Chris T

Classifications

• C22B21/0092

  Remelting scrap, skimmings or any secondary source aluminium · CPC title

• F27B3/18

  Arrangements of devices for charging · CPC title

• F27B3/16 Primary

  Walls; Roofs · CPC title

• F27B3/19

  Arrangements of devices for discharging · CPC title

• F27D27/00

  Stirring devices for molten material (charging or discharging liquid or molten material F27D3/14) · CPC title