Siemens Aktiengesellschaft

Refratechnik Holding Gmbh

Evonik Degussa Gmbh

Refractory Intellectual Property Gmbh & Co. Kg

Rutgers Chemicals Ag

Technische Universität Bergakademie Freiberg—institut Für Keremik, Glas-Und Baustofftechnik

Technische Universitat Bergakademie Freiberg

Christos Georgios Aneziris

Holger Grote

Nora Gerlach

Helge Jansen

Claus Krusch

Uwe Klippel

Christoph Tontrup

Petra Stein

Friederike Lange

Dirk Schnitzler

Winfried Boenigk

Dmitry Borzov

Constantin Jahn

Joachim Ulbricht

Jens Stiegert

Christoph Jacob

Antoine Ducastel

Erwan Gueguen

Harm Speicher

Stefan Schafföner

Christiane Biermann

Patrick Gehre

Steffen Dudczig

Jana Hubálková

Christian Weigelt

A synthesis method for producing a refractory oxide-ceramic material of CaZrO, in particular in the form of a refractory granular material that is preferably mechanically comminuted, in particular crushed and/or ground, as well as to a batch and a coarse ceramic, shaped or unshaped, refractory product containing at least one pre-synthesized refractory calcium zirconate-containing granular material.

Synthesis method for producing a calcium zirconate-containing material and batch and coarse ceramic refractory product having a pre-synthesized calcium zirconate-containing granular material

The present invention relates to a compound for making high-temperature-resistant or refractory molded bodies, made up of a mixture of:

Refractory molded body, compounds, binders, and method for producing same

A molded, fireproof product, which contains graphite, in particular natural graphite, and is based on fireproof granular materials. The granular-material grains of the product are consolidated to form a molded body by means of a binder known per se and/or ceramic bonding. The product has a homogeneous mixture of at least two graphite types, which each have a different coefficient of thermal expansion. One graphite type is predominant by amount and the other graphite type acts as an auxiliary graphite type. The invention further relates to a method for producing a product and to the use of the product.

Fireproof product containing graphite, method for producing said product, and use of said product

A pressure casting slip for producing a refractory ceramic for use as a heat shield, e.g. in the hot gas path of gas turbine units, includes a particulate mixture of at least two materials having different coefficients of thermal expansion and also organic and/or inorganic binders and floating agents. The particulate mixture has a multimodal particle size distribution divided into 10-20 percent by weight of coarse particles in the size range 1-5 mm in diameter, 10-20 percent by weight of medium particles in the size range 0.5-1 mm in diameter and 60-80 percent by weight of fine particles in the size range up to 0.5 mm in diameter which together make up 100 percent by weight of the particle mixture.

Pressure casting slip and refractory ceramic produced therefrom for gas turbine units

A material composition for producing a fireproof material having a fine-grain fraction with grain sizes of less than 100 &#x3bc;m and a coarse-grain fraction with grain sizes of more than 100 &#x3bc;m is provided. The fine-grain fraction includes aluminum oxide having a weight proportion of at least 90% by wt. in relation to the total weight of the fine-grain fraction, zirconium oxide having a weight proportion of up to 5% by wt. in relation to the total weight of the fine-grain fraction, a stabilizer for the zirconium oxide as well as titanium oxide powder having a weight proportion of up to 5% by wt. in relation to the total weight of the fine-grain fractional. The coarse-grain fraction represents a weight fraction of more than 30% by wt. of the material composition.

Material composition for producing a fireproof material and the use thereof, and fireproof molded body and method for the production thereof

A method for producing a refractory molded boy using a material composition having a fine-grain fraction with grain sizes of less than 100 &#x3bc;m and a coarse-grain fraction with grain sizes of more than 100 &#x3bc;m. The method includes the steps of adding a dispersing agent and/or a liquefier to the material composition unless the material compositing already includes the dispersing agent and/or liquefier, forming the material composition into a molded body, and sintering the molded body at a temperature above 1300 degrees Celsius.

Mix which comprises a) one or more very finely divided silicon dioxide powders having an average particle diameter of from 2 to 100 nm and a BET surface area of at least 30 m/g, b) one or more particulate components selected from the group consisting of oxides, carbides and nitrides, in each case having an average particle diameter of from &#x3e;0.5 &#x3bc;m to 30 mm, c) one or more synthetic resins as binders and d) one or more metallic antioxidants having an average particle diameter of from &#x3e;0.5 to 250 &#x3bc;m. Process for producing a shaped body, in which to the mix is introduced into a mould, pressed if appropriate and heated to a temperature at which the synthetic resin crosslinks thermally. Shaped body which can be obtained therefrom. Process for producing a refractory shaped body, in which the shaped body is carbonized. Refractory shaped body which can be obtained therefrom.

Mix and refractory product having a high hydration resistance produced therefrom

The invention relates to a method for manufacturing carbon-bonded refractory products from refractory granulations and organic binder agents, wherein a powdery, graphitable coal-tar pitch with a benzo[a]pyrene content less than 500 mg/kg and a coking value of at least about 80% by weight according to DIN 51905 and a graphitable binder agent liquid at room temperature, with a coking value of at least about 15% by weight and a benzo[a]pyrene content less than 500 ppm according to DIN 51905, are used as organic binder agent, mixed with the remaining constituents, transferred to a mould body, then heat treated at a temperature of 150 to about 400&#xb0; C.

Manufacture of environmentally friendly carbon-bonded refractory product in the cold mixing process

Growing community of inventors

Freiberg, Germany

Christos Georgios Aneziris