Process for forming a vitreous layer on a refractory surface

Details Process for forming a vitreous layer on a refractory surface Process for forming a vitreous layer on a refractory surface

C - Chemistry, Metallurgy

23

C

C23C 4/10 (2006.01) C03B 5/42 (2006.01) C04B 41/50 (2006.01) C04B 41/86 (2006.01) C10B 29/02 (2006.01) C10B 43/14 (2006.01) F27D 1/16 (2006.01)

Patent

CA 2410249

The present invention relates to a process for forming a vitreous layer on a refractory surface, in which a vitrifying agent is projected by means of an apparatus against the said surface with an oxygen- containing carrier gas and simultaneously with a combustible gas, the latter generating a combustion flame, characterized in that the vitrifying agent comprises particles of cullet and in that the flame generated provides, at least partially, the heat needed to form the vitreous layer on the surface. The vitreous layer thus formed makes it possible to prevent the build-up, on the refractory walls of high-temperature ovens, of dust or by-products coming from the raw materials and/or their reaction products.

La présente invention concerne un procédé de formation d'une couche vitreuse sur une surface réfractaire, dans lequel l'agent de vitrification est pulvérisé au moyen d'un appareil contre ladite surface avec un gaz vecteur oxygéné et simultanément avec un gaz combustible, ce dernier générant une flamme de combustion. Le procédé est caractérisé en ce que l'agent de vitrification comporte des particules de grésils et la flamme générée fournit, au moins en partie, la chaleur nécessaire à la formation de la couche vitreuse sur la surface. La couche vitreuse ainsi formée permet d'empêcher l'accumulation, sur les parois réfractaires de fours à convection, de poussière ou de sous-produits en provenance de matières premières et/ou de produits de réaction.

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