| 摘要 |
NEW UNSHAPED REFRACTORY COMPOSITIONS USEFUL AS JOINTING AND MOULDING COMPOSITIONS. Inventors: Jacques GUIGONIS Pierre JEANVOINE SOCIETE EUROPEENNE DES PRODUITS REFRACTAIRES The invention refers to an unshaped refractory composition which comprises by weight : (a) 55 to 99% of particles of a fused cast refractory material which contains a vitreous phase and the composition of which contains, as main constituents, ZrO2, Al203, SiO2, and possibly Cr2O3; (b) 1 to 5% of a hydraulic cement; (c) 1 to 15% of a filler consisting of very fine, substantially spherical particles of a metal oxide; (d) 0 to 25% of fine particles of a size less than 40 microns chosen from particles of ZrO2, Al2O3, Cr2O3, fused cast refractory products comprising by weight 75 - 85% ZrO2; 2 - 8% SiO2, 9 - 17% A12O3, 0.5 - 0.7% of other oxides, and mixtures thereof; and (e) 0.01 to 1% of a surface-active agent, with respect to the total weight of the constituents (a), (b), (c) and (d). Application especially in the construction of hearths of glass furnaces. |
