Refractory batch and use thereof

US10093581B2 · kind B2 · utility

Assignee

• Refratechnik Holding GmbH · DE

Inventors

• Helge Jansen · Friedland, DE
• Volker Stein · Newmarket, CA
• Thomas Schemmel · Meerbusch, DE

Key dates

• Filing date: Apr 30, 2014
• Grant date: Oct 9, 2018
• Expiry date: Apr 30, 2034

Classification

• Technology area (CPC H): Electricity
• CPC primary: H05K3/4053
• WIPO field: Materials, metallurgy
• WIPO sector: Chemistry

Abstract

A batch made of refractory mineral materials for lining of assemblies used for nonferrous metal melts, contains over 90% by weight of a mixture of the following constituents:—from 3 to 74% by weight of at least one coarse-grain raw olivine material with at least 70% by weight forsterite content and having grain sizes of 50% by weight over 0.1 mm—from 25 to 49% by weight of at least one ground magnesia with grain sizes of 50% by weight≤1 mm—from 0.9 to 14% by weight of at least one ground silicon carbide (SiC) with grain sizes of 50% by weight≤1 mm—from 0.1 to 10% by weight of at least one fine-particle dry pulverulent silica with particle sizes≤500 μm—from 0 to 4% by weight of at least one antioxidant known per se for refractory products—from 0 to 4% by weight of at least one additional granulated refractory raw material known per se, more particularly having grain sizes of 50% by weight, in particular of 80% by weight, preferably of 100% by weight over 0.1 mm—from 0 to 2% by weight of at least one additive known per se for the production of refractory products from batches—from 0 to 4% by weight of at least one additional substance known per se made of ground refractory materials …