Scrap submergence system

Patent metadata

Field	Value
Publication number	US-9476644-B2
Application number	US-201214131227-A
Country	US
Kind code	B2
Filing date	Jul 9, 2012
Priority date	Jul 7, 2011
Publication date	Oct 25, 2016
Grant date	Oct 25, 2016

Abstract

In accordance with one aspect of an exemplary embodiment, a furnace including a charge well is provided. The charge well comprises an open top chamber including side and base walls of a heat resistant material. An inlet is provided in a side wall of the chamber for receiving molten metal. A ramp is provided adjacent the side wall and an inner wall forms a central cavity. The ramp is disposed between the inner wall and the side wall. The ramp is generally inclined from an intersection with the base wall to adjacent a top surface of the inner wall. The cavity is in fluid communication with an outlet. A passage in the inner wall provides fluid communication between the inlet and the cavity. The inlet and an outlet each receives a conduit and at least one of the conduits can include an elbow joint.

First claim

The invention claimed is:

1. A furnace including a charge well, said charge well comprising an open top chamber including side and base walls of a heat resistant material, an inlet in a side wall of the chamber for receiving molten metal, and an inclined ramp adjacent said side wall of the chamber, an inner wall forming a central cavity, said ramp disposed between said inner wall and said side wall, said cavity in fluid communication with an outlet, and a passage in said inner wall providing fluid communication between said inlet and said cavity.

2. The furnace of claim 1 further including a conduit providing fluid communication between said charge well and the furnace, the conduit including an elbow joint.

3. The furnace of claim 1 further including an adaptor mating a conduit to said furnace, said adapter including an inlet with an area greater than an outlet.

4. The furnace of claim 1 being capable of reversible operation with fluid flowing selectively from either the inlet to the cutlet within said charge well or from the cutlet to the inlet within said charge well.

5. A charge well comprising an open top chamber including side and base walls of a heat resistant material, an inlet in a side wall of the chamber for receiving molten metal, a ramp adjacent said side wall of the chamber, an inner wall forming a central cavity, said ramp disposed between said inner wall and said side wall, said ramp inclined from an intersection with the base wall to adjacent a top surface of said inner wall, said cavity in fluid communication with an outlet, a passage in said inner wall providing fluid communication between said inlet and said cavity, and a removable insert comprised of a heat resistant material shaped for removable securement within said passage, said removable insert blocking at least a portion of said passage.

6. The charge well of claim 5 wherein said insert includes a top surface forming an at least substantially contiguous rim with a top surface of said inner wall.

7. The charge well of claim 5 wherein said insert is disposed above said base wall.

8. The charge well of claim 5 wherein said inner wall includes one of a key and a keyway and said insert includes the other of the key and the keyway.

9. The charge well of claim 5 wherein said removable insert at least substantially fully blocking said passage.

Assignees

• Howitt Roger
• Grayson Jim
• Bolton Mark
• Bosworth Paul
• Pyrotek Inc

Inventors

• Howitt Roger
• Grayson Jim
• Bolton Mark
• Bosworth Paul

Classifications

• F27B3/04 Primary

  of multiple-hearth type; of multiple-chamber type; Combinations of hearth-type furnaces · CPC title

• F27D27/00

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

• C22B7/003

  only remelting, e.g. of chips, borings, turnings; apparatus used therefor · CPC title

• F27B3/18

  Arrangements of devices for charging · CPC title

• F27B3/045 Primary

  Multiple chambers, e.g. one of which is used for charging · CPC title