摘要:
The present invention relates to a regenerator including a packed bed of energy storage elements made of a material having the following chemical analysis: 25% 80%, and other compounds: complement to 100%.
摘要:
The invention relates to a melted and cast refractory product for glass furnaces, comprising, in weight percentages based on the oxides and relating to a total of 100% of the oxides: ZrO 2 + HfO 2 : balance, where HfO 2 ≤ 5%; SiO 2 : between 1.5% and 7.5%; Al 2 O 3 : between 1.0% and 3.0%; CaO + SrO : between 1.2% and 3.0%; Y 2 O 3 : between 1.5% and 3.0%; Na 2 O + K 2 O : 2 O 3 : 2 O 5 : 2 O 3 + TiO 2 : 2 , HfO 2 , SiO 2 , AI 2 O 3 , Na 2 O, K 2 O, B 2 O 3 , CaO, SrO, Y 2 O 3 , P 2 O 5 , Fe 2 O 3 and TiO 2 :
摘要:
A filter for the filtration of a fluid such as a liquid, comprising or composed of a support element (1) made of a porous ceramic material, said element exhibiting a tubular or parallelepipedal shape delimited by an external surface (2) and comprising, in its internal portion (3), a set of adjacent channels (4) with axes parallel to one another and separated from one another by walls (8) of said porous inorganic material, in which at least a portion of said channels (4) and/or at least a portion of said external surface are covered with a porous separating membrane layer (5), said filter being characterized in that: - said separating membrane layer is made of a material essentially composed of silicon carbide (SiC), - the content by weight of elemental nitrogen of the layer constituting the porous separating membrane layer is between 0.1% and 2%.