Use of a heat insulating molded body for isolation of molten metal against the atmosphere or against a metallurgical vessel

US11150022B2 · kind B2 · utility

Assignee

• Refratechnik Holding GmbH · DE

Inventors

• Helge Jansen · Friedland, DE
• Thomas Schemmel · Meerbusch, DE
• Petra Stein · Göttingen, DE
• Michael Schölwer · Velbert, DE

Key dates

• Filing date: Jun 27, 2017
• Grant date: Oct 19, 2021
• Expiry date: Jul 13, 2037

Classification

• Technology area (CPC F): Mechanical Engineering; Lighting; Heating
• CPC primary: F27B2014/104
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

An unfired, refractory molded body (1), includes a binding agent matrix (2) containing at least one set, permanent binding material and aggregate grains (3) with and/or of biogenic silicic acid, preferably with and/or of rice husk ash, which grains are incorporated into the binding agent matrix (2), for thermal isolation of a molten metal, especially of molten steel, and/or of a metal ingot solidifying from the molten metal, and also the use of the molded body (1) for thermal isolation of a refractory lining, in particular in a multiple-layer brick wall or in a heat-treatment furnace, or as a corrosion barrier, e.g. against alkali attack, or as a fire protection lining or as filter material for hot gases.