Method for the production of mineral wool, especially for use in basic milieu

US4153439A · kind A · utility

Assignee

• LIMITED LIABILITY COMPANY “ROCKWOOL” · SE

Inventors

• Relja Tomic · Skövde, SE
• Ulf Aberg · Skövde, SE
• Elis R. Karlsson · Skövde, SE

Key dates

• Filing date: Jun 7, 1977
• Grant date: May 8, 1979
• Expiry date: Jun 7, 1997

Classification

• Technology area (CPC C): Chemistry; Metallurgy
• CPC primary: C03C13/001
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A method of producing alkali-resistant mineral wool. The starting material is melted and formed into fibers and the fibers are cooled and collected. The raw material has the following composition: ______________________________________ SiO.sub.2 40-60 wt. % Al.sub.2 O.sub.3 1-15 wt. % CaO 1-6 wt. % MgO 30-45 wt. % Iron oxides 1-8 wt. % Alkali oxides maximum 2 wt. % Other oxides maximum 2 wt. %. ______________________________________ The raw material preferably includes olivine.