Treating metals and/or metallic compounds

US4708190A · kind A · utility

Assignee

• Arthur Pfeiffer Vakummtechnik Wetzlar GmbH · US

Inventors

• Robert Hack · Biebertal, DE
• Helmut Strzala · Solms, DE

Key dates

• Filing date: Jul 18, 1986
• Grant date: Nov 24, 1987
• Expiry date: Jul 18, 2006

Classification

• Technology area (CPC Y): Emerging Cross-Sectional Technologies
• CPC primary: Y02P10/20
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

Metals and/or metallic compounds are condensed from a vapor in a reaction vessel into a condenser, the condensate initially solidifying to block an outlet at the bottom of condenser; subsequent operation of heating stages from the top to the bottom of the condenser to melt the solidified condensate ensures that, as the outlet becomes unblocked, the whole melt flows into a mould.