Method and apparatus for melting metal
AssigneeNorth American Manufacturing Company
InventorsThomas F. Robertson, John N. Newby
Life of this patent
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Abstract
An apparatus for melting a metal load includes a furnace having a melting chamber with a hearth and a molten metal outlet. The apparatus further includes non-regenerative burners that are operative to fire into the melting chamber, and regenerative burners that also are operative to fire into the melting chamber. The method includes the steps of firing non-regenerative burners into the chamber to provide heat for melting the load, and also firing regenerative burners into the chamber to provide heat for melting the load.
Claims13
A method of melting a metal load in a furnace having a melting chamber with a hearth and a molten metal outlet, said method comprising the steps of:
- firing non-regenerative burners into the melting chamber to provide heat for melting the load;
- and
- also firing regenerative burners into the melting chamber to provide heat for melting the load.
A method of melting a metal load in a furnace having a melting chamber with a hearth and a molten metal outlet, said method comprising the steps of:
- firing non-regenerative burners and regenerative burners into the melting chamber to provide heat for melting the load, with the burners being fired in differing modes including a) a direct firing mode in which regenerative burners are fired without exhaust cycles while non-regenerative burners also are being fired, and b) a hybrid mode in which at least two regenerative burners are fired with alternating exhaust cycles while a non-regenerative burner also is being fired.
A method of melting a metal load in a furnace having a melting chamber with a hearth and a molten metal outlet, said method comprising the steps of:
- firing non-regenerative burners into the melting chamber to provide heat for melting the load;
- and
- also firing regenerative burners into the melting chamber to provide heat for melting the load;
- wherein the burners are fired in differing modes including a first mode in which only non-regenerative burners are fired, a second mode in which non-regenerative burners and regenerative burners are fired simultaneously, and a third mode in which only regenerative burners are fired.
Dependencies are inferred from the claim text.