Refractory product, batch for producing the product, method for producing the product, and use of the product

Patent metadata

Field	Value
Publication number	US-10035732-B2
Application number	US-201515513969-A
Country	US
Kind code	B2
Filing date	Sep 8, 2015
Priority date	Dec 2, 2014
Publication date	Jul 31, 2018
Grant date	Jul 31, 2018

Abstract

The invention relates to a refractory product, a batch for producing the product, a method for producing the product, and a use of the refractory product.

First claim

The invention claimed is:

1. A refractory product based on Al 2 O 3 , comprising at least one MAX phase, and containing at least one of the following phases: metallic aluminum, metallic silicon, metallic titanium, metallic iron, or at least one alloy from at least two of these metals.

2. The product according to claim 1 , having a proportion of MAX phases of at least 0.5 mass %.

3. The product according to claim 1 , having a proportion of Al 2 O 3 of at least 50 mass %.

4. The product according to claim 1 , containing at least one of the following phases: at least one carbide, at least one oxycarbide, at least one oxycarbonitride, or at least one SiCAlON.

5. The product according to claim 1 , in which the structure is formed from a matrix of Al 2 O 3 , into which at least one MAX phase is incorporated.

6. A batch for producing a refractory product based on Al 2 O 3 comprising at least one MAX phase, wherein the batch has the following features:
the batch comprises one or more components comprising aluminum, carbon, silicon or titanium;
the proportions of aluminum, carbon, silicon and titanium in the batch, which are introduced into the batch by the components, lies in the following ranges, in each case in relation to the total mass of the batch:
aluminum, calculated as Al 2 O 3 : 10 to 97 mass %;
carbon: 1 to 30 mass %;
silicon, calculated as SiO 2 : 1 to 20 mass %;
titanium, calculated as TiO 2 : 1 to 50 mass %;
the batch having an aluminum-comprising component in the form of at least one of the following components: sintered corundum, fused corundum, calcined alumina, tabular alumina, or bauxite;
the batch having a carbon-comprising component in the form of at least one of the following components: graphite, anthracite, petroleum coke, or carbon black;
the batch having a silicon-comprising component in the form of at least one of the following components: kaolin, fireclay, at least one refractory clay, at least one raw material comprising mullite, quartzite, quartz sand, or zirconium;
the batch having a titanium-comprising component in the form of rutile.

7. A method for producing a refractory product, the refractory product based on Al 2 O 3 , the refractory product comprising at least one MAX phase, the method comprising the following steps:
providing a batch for producing the refractory product, wherein the batch has the following features:
the batch comprises one or more components comprising aluminum, carbon, silicon or titanium;
the proportions of aluminum, carbon, silicon and titanium in the batch, which are introduced into the batch by the components, lies in the following ranges, in each case in relation to the total mass of the batch:
aluminum, calculated as Al 2 O 3 : 10 to 97 mass %;
carbon: 1 to 30 mass %;
silicon, calculated as SiO 2 : 1 to 20 mass %; and
titanium, calculated as TiO 2 : 1 to 50 mass %;

the batch having an aluminum-comprising component in the form of at least one of the following components: sintered corundum, fused corundum, calcined alumina, tabular alumina, or bauxite;
the batch having a carbon-comprising component in the form of at least one of the following components: graphite, anthracite, petroleum coke, or carbon black;
the batch having a silicon-comprising component in the form of at least one of the following components: kaolin, fireclay, at least one refractory clay, at least one raw material comprising mullite, quartzite, quartz sand, or zirconium;
the batch having a titanium-comprising component in the form of rutile;
applying heat to the batch; and
cooling the batch applied to heat.

Assignees

• Refractory Intellectual Property Gmbh & Co Kg
• Refractory Intellectual Gmbh & Co Kg

Inventors

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

Classifications

• C04B38/0058

  open porosity · CPC title

• C04B35/10 Primary

  based on aluminium oxide · CPC title

• C04B35/103

  containing non-oxide refractory materials, e.g. carbon (C04B35/106 takes precedence) · CPC title

• C04B35/107

  Refractories by fusion casting · CPC title

• C04B35/043 Primary

  Refractories from grain sized mixtures · CPC title