| abstract |
REFRACTORY PRODUCT FUSED AND MOLDED WITH HIGH ZIRCONIA CONTENT, PROCESS OF MANUFACTURING A REFRACTORY PRODUCT, GLASS FUSION OVEN AND ELECTROLYSIS VESSEL. The invention relates to a new cast and molded refractory product with a high zirconia content that has an improved electrical resistivity. This refractory product comprises in mass percentages based on oxides and for a total of more than 98.5%: ZrO ~ 2 ~ + Hf ~ 2 ~ O:> 85%; Si0 ~ 2 ~: 2% to 10%; AI ~ 2 ~ O ~ 3 ~: 1% to 2.4%; B ~ 2 ~ O ~ 3 ~: <1%, e; a dopant chosen from the group formed by V ~ 2 ~ O ~ 5 ~, CrO ~ 3 ~, Nb ~ 2 ~ O ~ 5 ~, MoO ~ 3 ~, Ta ~ 2 ~ O ~ 5 ~, WO ~ 3 ~, and mixtures thereof, in a weighted quantity such that 0.2% <243> 2.43.V ~ 2 ~ O ~ 5 ~ + 8.84.CrO ~ 3 ~ + 1.66.Nb ~ 2 ~ O ~ 5 ~ + 6.14.MoO ~ 3 ~ + Ta ~ 2 ~ O ~ 5 ~ + 3.811.WO ~ 3 ~. |