Batch for production of a refractory product, a process for the production of a refractory product, a refractory product as well as the use of a refractory product

Patent metadata

Field	Value
Publication number	US-2018282224-A1
Application number	US-201515543178-A
Country	US
Kind code	A1
Filing date	Nov 25, 2015
Priority date	Feb 9, 2015
Publication date	Oct 4, 2018
Grant date	—

Abstract

The invention concerns a batch for the production of a refractory product, a process for the production of a refractory product, a refractory product as well as the use of a refractory product.

First claim

1 . A batch for the production of a refractory product, comprising the following components:
1.1 a base component based on alumina; 1.2 at least one of the following silicate components: at least one silicate component based on aluminium silicate or at least one silicate component based on zirconium silicate; 1.3 a carbon component.

2 . The batch as claimed in claim 1 , with a base component in the form of calcined silica.

3 . The batch as claimed in one of the preceding claims, with at least one of the following silicate components: kaolin, metakaolin, fireclay, pyrophyllite, calcined bauxite, mullite or zircon.

4 . The batch as claimed in at least one of the preceding claims, with a carbon component in the form of graphite.

5 . A process for the production of a refractory product, comprising the following steps:
5.1 providing a batch in accordance with at least one of the preceding claims; 5.2 melting the batch; 5.3 cooling the melt.

6 . A refractory product produced by a process as claimed in claim 5 .

7 . A refractory product comprising the following phases in the following proportions:
7.1 corundum: 64% to 99.5% by weight; and 7.2 total weight of SiC, Al 4 O 4 C, SiAlON, SiCAlON, Al oxynitride: 0.5% to 36% by weight.

8 . The refractory product as claimed in at least one of claim 6 or 7 , with a proportion of carbon in the product of less than 2.4% by weight.

9 . The refractory product as claimed in at least one of claims 6 to 8 , in the form of a solidified melt.

10 . Use of a refractory product as claimed in at least one of claims 6 to 9 , as a raw material for the production of a refractory product.

Assignees

• Refractory Intellectual Property Gmbh & Co Kg

Inventors

• Djuricic Boro
• Freiberger Norbert
• Muhlhausser Jurgen
• Bauer Christoph

Classifications

• C04B2235/3463

  Alumino-silicates other than clay, e.g. mullite · CPC title

• C04B2235/3248

  Zirconates or hafnates, e.g. zircon · CPC title

• C04B2235/3217

  Aluminum oxide or oxide forming salts thereof, e.g. bauxite, alpha-alumina · CPC title

• C04B2235/349

  Clays, e.g. bentonites, smectites such as montmorillonite, vermiculites or kaolines, e.g. illite, talc or sepiolite · CPC title

• C04B35/109 Primary

  containing zirconium oxide or zircon (ZrSiO4) · CPC title