Abstract: A sintered product having: the following chemical analysis, as percentage by mass based on the oxides: Al2O3: remainder to 100%, 0.26%?Na2O?4%, 0%?oxides other than Al2O3 and Na2O?6%, provided that SiO2?2%, the following crystalline phases, as percentages by mass based on the total amount of crystalline phases: 5%?beta-alumina?37%, less than 6% of crystalline phases other than beta-alumina and alpha-alumina, remainder to 100%: alpha-alumina.

Abstract: A sintered concrete having the following mean chemical composition, as mass percentages on the basis of the oxides and for a total of 100%; ZrO2: 55 to 70%, SiO2: 25 to 40%, P2O5: 0.2 to 9.0%, Al2O3: 0.5 to 7.0%, CaO: >0.2%, CaO+MgO+B2O3+Fe2O3: 0.2 to 10.0%, MgO+B2O3+Fe2O3; ?7.5%, B2O3+MgO: ?4.5%, ZrO2+SiO2+P2O5+Al2O3+CaO+MgO+B2O3+Fe2O3: ?95.0%, and containing more than 70% of zircon, as a mass percentage on the basis of the mass of the crystalline phases.

Abstract: The present invention relates to a sintered concrete having the following mean chemical composition, as mass percentages on the basis of the oxides and for a total of 100%: ZrO2: 55 to 70%, SiO2: 25 to 40%, P2O5: 0.2 to 9.0%, Al2O3: 0.5 to 7.0%, CaO: >0.2%, CaO+MgO+B2O3+Fe2O3: 0.2 to 10.0%, MgO+B2O3+Fe2O3: ?7.5%, B2O3+MgO: ?4.5%, ZrO2+SiO2+P2O5+Al2O3+CaO+MgO+B2O3+Fe2O3: ?95.0%, and containing more than 70% of zircon, as a mass percentage on the basis of the mass of the crystalline phases.

Abstract: An unshaped product including a particulate mixture containing: a coarse fraction, representing >50%<91% of particulate mixture, in mass percentage, and containing particles size ?50 ?m, “coarse particles”, and matrix fraction, forming remainder up to 100% of particulate mixture, and containing particles sizes <50 ?m, product having chemical analysis, in mass percentage based on oxides of product, such: ?45%<Al2O3, ?7.5%<SiO2<35%, ?0%?ZrO2<33%, providing 10%<SiO2+ZrO2<54%, ?0.15%<B2O3<8%, other oxides: <6%, Al2O3 forming remainder up to 100%, coarse fraction including more than 15% coarse particles having size >1 mm, in mass percentage based on particulate mixture, matrix fraction having a chemical analysis, in mass percentage based on oxides of matrix fraction, such: Al2O3+SiO2+ZrO2>86%, providing 35%<Al2O3.

Abstract: Feeder channel for molten glass including an infrastructure including a block self-cast and sintered in situ. Furthermore, a method for manufacturing a block of such an infrastructure and a supply channel for a glassmaking furnace are claimed.

Abstract: An unshaped product including a particulate mixture containing: a coarse fraction, representing >50%<91% of particulate mixture, in mass percentage, and containing particles size ?50 ?m, “coarse particles”, and matrix fraction, forming remainder up to 100% of particulate mixture, and containing particles sizes <50 ?m, product having chemical analysis, in mass percentage based on oxides of product, such: ?45%<Al2O3, ?7.5%<SiO2<35%, ?0%?ZrO2<33%, providing 10%<SiO2+ZrO2<54%, ?0.15%<B2O3<8%, other oxides: <6%, Al2O3 forming remainder up to 100%, coarse fraction including more than 15% coarse particles having size >1 mm, in mass percentage based on particulate mixture, matrix fraction having a chemical analysis, in mass percentage based on oxides of matrix fraction, such: Al2O3+SiO2+ZrO2>86%, providing 35%<Al2O3.

Abstract: Feeder channel for molten glass including an infrastructure including a block self-cast and sintered in situ. Furthermore, a method for manufacturing a block of such an infrastructure and a supply channel for a glassmaking furnace are claimed.

Abstract: The invention concerns a sintered refractory product having the following average chemical composition, in weight percentages based on oxides: 20%<Al2O3<90%; 6%=SiO2<30%; 3%<ZrO2<50%; 0%=Cr2O3<50%. The inventive product is characterized in that it comprises 17 to 85 wt. % of mullite-zirconium grains.

Abstract: The invention concerns a sintered refractory product having the following average chemical composition, in weight percentages based on oxides: 20%<Al2O3<90%; 6%=SiO2<30%; 3%<ZrO2<50%; 0%=Cr2O3<50%. The inventive product is characterized in that it comprises 17 to 85 wt. % of mullite-zirconium grains.