Submerged entry nozzle

US8758672B2 · kind B2 · utility

Assignee

• REFRACTORY INTELLECTUAL PROPERTY GMBH & CO. KG

Inventors

• Gerald Nitzl · Bocholt, DE
• John Davies · El Sobrante, US

Key dates

• Filing date: Jan 21, 2009
• Grant date: Jun 24, 2014
• Expiry date: Oct 24, 2029

Classification

• Technology area (CPC B): Performing Operations; Transporting
• CPC primary: B22D11/10
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Nozzle for guiding molten metal, including an inlet at an upstream first end, at least one outlet towards a downstream second end, and an inner surface between the inlet and the outlet defining a bore through the nozzle having a throat region adjacent the inlet. An annular channel is provided in the inner surface of the nozzle, and a fluid supply is arranged to introduce fluid into the bore via the annular channel or downstream thereof. The throat region has a convexly curved surface and the annular channel is located within or adjacent the convexly curved surface of the throat region.