초록 ▼

The invention relates to an inorganic support obtained by sintering and intended to constitute a support for a filter membrane, the support comprising: an inorganic feedstock having a grain size greater than 20 .mu.m and constituted by a metal compound containing only one metal selected from the fol

The invention relates to an inorganic support obtained by sintering and intended to constitute a support for a filter membrane, the support comprising: an inorganic feedstock having a grain size greater than 20 .mu.m and constituted by a metal compound containing only one metal selected from the following metals: aluminum, silicon, and titanium; and an inorganic binder that reacts with the feedstock under the heat treatment conditions of the support in the range 1200.degree. C. to 1500.degree. C., so as to obtain a support having porosity greater than 25% and mechanical strength defined by ultimate bending stress for plane supports greater than 15 MPa, and by ultimate tensile stress for tubular supports greater than 5 MPa, without including a compound liable to create microcracks in the support.

대표청구항 ▼

[ We claim:] [1.] A sintered inorganic support made by sintering a body formed from inorganic feedstock and inorganic binder at a temperature in the range of 1200.degree. C. to 1500.degree. C. wherein said inorganic feedstock is a metal compound containing a single metal selected from the group cons

[ We claim:] [1.] A sintered inorganic support made by sintering a body formed from inorganic feedstock and inorganic binder at a temperature in the range of 1200.degree. C. to 1500.degree. C. wherein said inorganic feedstock is a metal compound containing a single metal selected from the group consisting of aluminum, silicon and titanium and said inorganic feedstock has a grain size greater than 20 microns;said inorganic binder is selected from the group consisting of clay and titanate having the formula TiMO wherein M is a metal and said inorganic binder is present in an amount which is less than 70% relative to the amount of inorganic feedstock;whereby compounds which can cause the formation of microcracks therein are essentially absent from said support and said sintered inorganic support has a porosity greater than 25%;with the proviso that said inorganic support has a mechanical strength defined by ultimate bending stress greater than 15 MPa when said inorganic support is in a planar configuration and a mechanical strength defined by a tensile strength value greater than 5 MPa when said inorganic support is in the form of a tube. [6.] The inorganic support of claim 1 which further includes at least one separator layer thereon adapted to separate molecules or particles contained in a fluid medium to be treated.