Nozzle carrying refractory element, and wear prevention...

C - Chemistry – Metallurgy – 21 – C

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39/105, 53/93

C21C 5/48 (2006.01) B22D 1/00 (2006.01) C21C 5/35 (2006.01) C22B 9/05 (2006.01)

Patent

CA 1222870

ABREGE DESCRIPTIF Cet élément réfractaire porte-tuyère comprend un assemblage de plusieurs sous-éléments en matériau réfractaire compact séparés par des fentes minces reliées à une source d'agent carboné liquide ou gazeux susceptible d'apporter, par imprégnation des couches supérieures de l'élément réfractaire, du carbone protecteur. L'agent carboné peut être un hydrocarbure et particulière- ment du fuel liquide. Cette disposition permet de freiner l'usure du réfractaire.

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