The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Aug. 10, 2010
Filed:
Jan. 11, 2005
Christos Aneziris, Freiberg, DE;
Winfried Lothar Boenigk, Lüdinghausen, DE;
Dmitry Borzov, Freiberg, DE;
Christoph Jacob, Essen, DE;
Jens Stiegert, Dortmund, DE;
Dirk Schnitzler, Herne, DE;
Joachim Ulbricht, Freiberg, DE;
Christos Aneziris, Freiberg, DE;
Winfried Lothar Boenigk, Lüdinghausen, DE;
Dmitry Borzov, Freiberg, DE;
Christoph Jacob, Essen, DE;
Jens Stiegert, Dortmund, DE;
Dirk Schnitzler, Herne, DE;
Joachim Ulbricht, Freiberg, DE;
Rütgers Chemicals AG, Castrop-Rauxel, DE;
Abstract
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° C.