The present invention relates, in part, to a discovery of a method for using atomic layer deposition (ALD) to improve the stability of refractory materials in high temperature steam, and compositions produced by the method.

A dry composition formulated to be combined with water to form a jamb spray mix, the dry composition comprising, by weight: 0.1% to 10% phosphate by weight based on total weight of the dry composition; 5% to 15% plasticizer by weight based on total weight of the dry composition; and the balance including fused silica particles and impurities.

A jamb spray mix comprising: 0.1% to 10% phosphate by weight based on total weight of dry ingredients in the mix, 5% to 15% plasticizer by weight based on total weight of dry ingredients in the mix, the balance of dry ingredients including fused silica particles and impurities, and at least 20% water by weight based on total weight of the mix. In certain non-limiting embodiments, a coating of the jamb spray mix is applied to a refractory brick surface region in a coke oven using an air pressurized applicator and associated nozzle.

A jamb spray mix comprising: 0.1% to 10% phosphate by weight based on total weight of dry ingredients in the mix, 5% to 15% plasticizer by weight based on total weight of dry ingredients in the mix, the balance of dry ingredients including fused silica particles and impurities, and at least 20% water by weight based on total weight of the mix. In certain non-limiting embodiments, a coating of the jamb spray mix is applied to a refractory brick surface region in a coke oven using an air pressurized applicator and associated nozzle.

The present invention relates to a dry refractory particulate composition comprising a zeolithic microstructure, to a green body and to a refractory lining formed therefrom, and to uses thereof.

A method for preparing aerogel particles and a coated component are provided. The coated component includes a substrate and a coating. The coating includes aerogel particles sprayed from a hot gas jet or plasma jet. The method includes the step of feeding one or a plurality of gel particles into a hot gas jet or plasma j et. The one or a plurality of gel particles are sufficiently small to permit supercritical drying during the time the particles are in the jet. The method further includes the step of exposing the one or a plurality of gel particles to the temperatures and pressures of the hot gas jet or plasma jet to create the aerogel particles outside of a jet emitter and/or without a sealed pressure vessel.

The present invention relates to a thermal emissivity coating composition comprising: a) an emissivity agent in an amount from 30 to 65% by weight with respect to the total weight of the thermal emissivity coating composition; b) a filler selected from the group consisting of oxides of aluminum, silicon, magnesium, calcium, boron and mixtures of two or more thereof, in an amount from 10 to 35 wt % with respect to the total weight of the thermal emissivity coating composition; and c) a binder in an amount from 12 to 52 wt % with respect to the total weight of the thermal emissivity coating composition; wherein the emissivity agent comprises cobalt oxide in an amount from 10 to 25 wt %, preferably 12 to 25 wt % with respect to the total weight of the thermal emissivity coating composition and further comprises chromium oxide and titanium oxide.

A mineral wool insulating product which comprises a layer, notably a continuous layer, of mixed mineral wool fibres, the mixed mineral wool fibres comprising a binder, first mineral wool fibres and second mineral wool fibres, the first mineral wool fibres and the second mineral wool fibres have a difference of softening point.

Disclosed is a hydraulically and chemically bonding refractory cement, which includes a caustic magnesia component having a BET specific surface area of at least 0.5 m.sup.2/g, and a carboxylic acid component, wherein the carboxylic acid component consists of at least one carboxylic acid that is only slightly water soluble and/or has a low dissolution rate in aqueous solutions, and which carboxylic acid component is capable of generating at least one soluble magnesium salt upon contact of the cement with water. Also disclosed is a corresponding refractory material containing the magnesia cement and to uses thereof for the manufacture of products useful in various industries.

What are described are the use of a refractory coating composition for production of cores for diecasting, a kit for production of cores for use in diecasting, a method of producing cores for use in diecasting, cores for use in diecasting, and the use of such cores in diecasting, especially of lightweight metals.