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

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 t...

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Bibliographische Detailangaben
Hauptverfasser: Aneziris, Christos, Boenigk, Winfried Lothar, Borzov, Dmitry, Jacob, Christoph, Stiegert, Jens, Schnitzler, Dirk, Ulbricht, Joachim
Format: Patent
Sprache:eng
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Beschreibung
Zusammenfassung: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.