C - Chemistry – Metallurgy – 04 – B
Patent
C - Chemistry, Metallurgy
04
B
C04B 35/48 (2006.01) C03B 5/43 (2006.01) F27D 1/00 (2006.01)
Patent
CA 2725452
The present invention relates to a sintered product produced from a starting charge containing 75 to 99% of zircon, in wt% on the basis of the oxides, and having the following average chemical composition by weight, in wt% on the basis of the oxides: 60% < ZrO2 < 72.8%; 27% < SiO2 < 36%; 0.1% < B2O3 + GeO2 + P2O5 + Sb2O3 + Nb2O5 + Ta2O5 + V2O5; 0.1% < ZnO + PbO + CdO; B2O3 + GeO2 + P2O5 + Sb2O3 + Nb2O5 + Ta2O5 + V2O5 + ZnO + PbO + CdO < 5%; 0% < Al2O3 + TiO2 + MgO + Fe2O3 + NiO + MnO2 + CoO + CuO < 5%; and other oxides: < 1.5%, for a total of 100%. Use in particular in a glass furnace.
La présente invention concerne un produit fritte élaboré à partir d'une charge de départ contenant 75 à 99% de zircon, en pourcentage massique sur la base des oxydes, et présentant la composition chimique pondérale moyenne, en pourcentages massiques sur la base des oxydes, suivante : 60% < ZrO2 < 72,8%, 27% < SiO2 < 36%, 0,1 % < B2O3 + GeO2 + P2O5 + Sb2O3 + Nb2O5 + Ta2O5 + V2O5, 0,1 % < ZnO + PbO + CdO, B2O3 + GeO2 + P2O5 + Sb2O3 + Nb2O5 + Ta2O5 + V2O5+ ZnO + PbO + CdO < 5% 0% < AI2O3 + TiO2 + MgO + Fe2O3 + NiO + MnO2 + CoO + CuO < 5%, Autres oxydes : < 1,5%, pour un total de 100%. Utilisation notamment dans un four de verrerie.
Citti Olivier
Fourcade Julien
Robic
Saint-Gobain Centre de Recherches Et D'etudes Europeen
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