A process for preparing a granular ceramic mixture includes the steps of: (a) contacting fluid bed combustion fly ash with an acidic aqueous solution to obtain acidic fluid bed combustion fly ash slurry; (b) removing excess acid from the slurry obtained in step (a) to obtain solid acid treated fluid bed combustion fly ash; and (c) contacting together: (i) the solid acid treated fluid bed combustion fly ash obtained in step (b); (ii) clay; (iii) optionally, feldspar; and (iv) optionally, other ingredients.

A method for producing a granular material from sintered magnesia by sintering of pressed articles, in particular pellets, from MgO powder, preferably from caustic MgO powder, and subsequent mechanical comminution of the pressed articles, the sintering being carried out in such a way that the granular material has a grain porosity (total porosity), according to DIN EN 993-1:1195-04 and DIN EN 993-18:1999-01, of from 15 to 38 vol %, preferably 20 to 38 vol %. Also, a batch for producing a coarse ceramic, refractory, shaped or unshaped product containing the porous sintered magnesia, to such a product produced from the batch and to a method for its production, to a lining, in particular a working casing and/or a backing, of a large-volume industrial furnace, the lining, in particular the working casing and/or the backing, having at least one such product, as well as to such an industrial furnace.

A manufacturing method for a ceramic matrix composite, having a woven fabric that has multiple fiber bundles and having a matrix that is disposed in the gaps between the fiber bundles, includes: a green body formation step for forming a green body by sintering the woven fabric infiltrated with a polymer that is a precursor to the matrix; and a densification step for further infiltrating the green body with a polymer and sintering same. The densification step includes: a second infiltration step for further infiltrating the green body with a polymer so as to form an infiltrated green body; a drying step for drying the infiltrated green body so as to form a dried green body; a steam treatment step for leaving the dried green body under saturation water vapor pressure so as to form a treated green body; and a sintering step for sintering the treated green body.

An antiballistic armor-plating component, includes a ceramic body made of a material including, as percentages by volume, between 20% and 75% of boron carbide, between 5% an d 30% of a metallic silicon phase or of a metallic phase including silicon and between 20% and 70% of silicon carbide and wherein, as percentages by volume: more than 60% of the grains with an equivalent diameter greater than 60 micrometers are boron carbide grains, the boron carbide grains with an equivalent diameter greater than 30 micrometers represent more than 20%, the silicon carbide grains with an equivalent diameter greater than or equal to 10 micrometers represent more than 10%, the silicon carbide grains with an equivalent diameter less than 10 micrometers represent more than 10%.

A filter for the filtration of a fluid, such as a liquid, includes or is constituted by a support element made from a porous ceramic material, at least a portion of the surface of the support element being covered with a porous membrane separating layer, the membrane separating layer being constituted essentially of silicon carbide (SiC), its porosity being between 10% and 70% by volume, the median diameter of its pores being between 50 nanometers and 500 nanometers, its mean thickness being between 1 micrometer and 30 micrometers, and its tortuosity being less than 1.7.

A manufacturing method for a composite material part includes injecting under pressure a slip containing a refractory ceramic particle powder into the moulding cavity of an injection tooling, draining the liquid from the slip that passed through the moulding cavity and retaining the particle powder inside the moulding cavity to obtain a blank including refractory particles, demoulding the blank, and heat treating the blank to form a part. The injection tooling includes a porous material mould consisting of a moulding cavity, an enclosure of rigid material in which the porous material mould is held, the enclosure further including an injection port, a discharge vent and an injection canal connecting the injection port to the moulding cavity of the porous mould for the injection of the slip into the moulding cavity. The injection tooling includes a sacrificial capsule of porous material placed in moulding cavity.

A modification layer on a surface of a ceramic substrate, includes, in parts by mass: 56 to 67.5 parts of silicon dioxide; 12 to 18 parts of aluminum oxide; and 2.8 to 5.5 parts of lithium oxide. In an embodiment, the modification layer further includes, in parts by mass: at least one of 1.8 to 2.8 parts of phosphorus pentoxide; 0.5 to 2.0 parts of calcium oxide; 0.15 to 1.5 parts of magnesium oxide; and 2.5 to 5.25 parts of barium oxide.

A synergistic disposal method of hazardous waste incineration residues and solid wastes, ceramsite and an application thereof, all belonging to the field of resources and environment. The disposal method includes the following steps: mixing of the hazardous waste incineration residues and solid wastes, granulation and dehydration of the resulting mixture and calcination to obtain ceramsite. In the preparation of ceramsite by the synergistic disposal of hazardous waste incineration residues and solid wastes as the raw materials, dioxin and organic matters in the hazardous waste incineration residues and solid wastes are decomposed, meanwhile the contained heavy metals are reduced and solidified, solving the disposal problem of hazardous waste incineration residues and solid wastes, saving a lot of land for landfills, decreasing the cost for comprehensive disposal, not producing new hazardous wastes, and reducing the burden of ecological environment.

A biological tissue collection method includes: preparing a component, the component including a first surface, a second surface, multiple (n≥2) holes for passing air from the first surface toward the second surface, and a wall formed between the holes, and an end portion of the wall on a first surface side being rounded and formed as a curved surface; sucking a biological tissue with a dimension of equal to or greater than 0.5 mm and equal to or less than 100 mm in a maximum direction in contact with the holes on the first surface side, thereby collecting the biological tissue by means of the holes; and taking equal to or greater than 50% and equal to or less than 90% of an area of the biological tissue as a total area of the holes used for collection.

A method of forming an integral fastener for a ceramic matrix composite component comprises the steps of forming a fiber preform with an opening, forming a fiber fastener, inserting the fiber fastener into the opening, and infiltrating a matrix material into the fiber preform and fiber fastener to form a ceramic matrix composite component with an integral fastener. A gas turbine engine is also disclosed.