Crust breaker and ore dispenser

A crust breaker and ore feeder device for electrolytic aluminum smelting employs an in-line three-position pneumatic cylinder capable of moving the plunger shaft to a fully raised position, to a fully lowered position, and to an intermediate, partly lowered position. The full stroke is used for a co...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser:	MASSARO PETER C, CARNO MICHAEL F
Format:	Patent
Sprache:	eng
Schlagworte:	CHEMISTRY FERROUS OR NON-FERROUS ALLOYS METALLURGY METALLURGY OF IRON PRETREATMENT OF RAW MATERIALS PROCESSING OF PIG-IRON, e.g. REFINING, MANUFACTURE OFWROUGHT-IRON OR STEEL PRODUCTION AND REFINING OF METALS TREATMENT IN MOLTEN STATE OF FERROUS ALLOYS TREATMENT OF ALLOYS OR NON-FERROUS METALS
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Beschreibung
Zusammenfassung:	A crust breaker and ore feeder device for electrolytic aluminum smelting employs an in-line three-position pneumatic cylinder capable of moving the plunger shaft to a fully raised position, to a fully lowered position, and to an intermediate, partly lowered position. The full stroke is used for a conventional combined ore dispensing and a crust breaking operation; a partial stroke between the fully raised position and the intermediate position permits ore dispensing without a crust breaking; and a partial stroke between the intermediate position and the fully lowered position permits crust breaking operation without ore feeding. The cylinder can take form of a tandem cylinder having upper and lower axially aligned cylinder portions, with rods not connected to one another.