Provided is a method for manufacturing a spherical particle material in which the particle size distribution is easily controlled. This method has: a granulation step of granulating a raw particle material formed of an inorganic material having a D50 of not larger than 5 μm to form a granulated body; and a spherizing step of heating and melting the granulated body to form the spherical particle material having a D50 larger than a D50 of the raw particle material. A melting method is used as a basic method for manufacturing the spherical particle material having a necessary particle size distribution. The granulated body is used to manufacture the spherical particle material having the necessary particle size distribution by the melting method.

Provided is a method for manufacturing a spherical particle material in which the particle size distribution is easily controlled. This method has: a granulation step of granulating a raw particle material formed of an inorganic material having a D50 of not larger than 5 μm to form a granulated body; and a spherizing step of heating and melting the granulated body to form the spherical particle material having a D50 larger than a D50 of the raw particle material. A melting method is used as a basic method for manufacturing the spherical particle material having a necessary particle size distribution. The granulated body is used to manufacture the spherical particle material having the necessary particle size distribution by the melting method.

Agglomerated dispersible granules are disclosed including activated alumina particles and phosphate particles. The activated alumina particles have a porous structure and a plurality of electrically-charged binding sites disposed within the porous structure. The activated alumina particles and the phosphate particles are present in the agglomerated dispersible granules as distinct phases agglomerated together. A method for amending soil with buffered phosphorus is disclosed including physically blending and then agglomerating activated alumina particles with phosphate particles to form the agglomerated dispersible granules. The agglomerated dispersible granules are applied to soil with the activated alumina particles and the phosphate particles being present as distinct phases and the activated alumina particles being free of phosphate disposed within the porous structure. An activated alumina suspension is disclosed including activated alumina particles suspended as a dispersed phase in a continuous phase, the activated alumina particles having a particle size less than 200 μm.

Agglomerated dispersible granules are disclosed including activated alumina particles and phosphate particles. The activated alumina particles have a porous structure and a plurality of electrically-charged binding sites disposed within the porous structure. The activated alumina particles and the phosphate particles are present in the agglomerated dispersible granules as distinct phases agglomerated together. A method for amending soil with buffered phosphorus is disclosed including physically blending and then agglomerating activated alumina particles with phosphate particles to form the agglomerated dispersible granules. The agglomerated dispersible granules are applied to soil with the activated alumina particles and the phosphate particles being present as distinct phases and the activated alumina particles being free of phosphate disposed within the porous structure. An activated alumina suspension is disclosed including activated alumina particles suspended as a dispersed phase in a continuous phase, the activated alumina particles having a particle size less than 200 μm.

A composite membrane for hydrogen separation and purification, including: a modified and activated support, a Palladium (Pd) layer, and an interstice layer between the second surface-modifying layer and the Pd layer. The support includes a support substrate, a first surface-modifying layer on the support substrate, and a second surface-modifying layer on the first surface-modifying layer.

Novel methods for processing fumed metallic oxides into globular metallic oxide agglomerates are provided. The methodology may allow for fumed metallic oxide particles, such as fumed silica and fumed alumina particles, to be processed into a globular morphology to improve handling while retaining a desirable surface area. The processes may include providing fumed metallic oxide particles, combining the particles with a liquid carrier to form a suspension, atomizing the solution of suspended particles, and subjecting the atomized droplets to a temperature range sufficient to remove the liquid carrier from the droplets, to produce metallic oxide-containing agglomerations.

A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m.sup.2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.

A boehmite structure includes a plurality of boehmite particles where adjacent boehmite particles are bonded to each other. The boehmite structure has a porosity of 30% or less. A method of producing a boehmite structure includes obtaining a mixture by mixing hydraulic alumina with a solvent including water, and pressurizing and heating the mixture under a condition of a pressure of 10 to 600 MPa and a temperature of 50 to 300° C.

The invention relates to a method for producing an alumina based abrasive particle (1), comprising at least the following steps: forming a sol as a solution or dispersion of alumina particles, gelling the sol by adding gelling agents, forming shaped bodies from the gel using an additive procedure, drying and firing the shaped bodies while retaining the previously achieved geometry of the abrasive particles. Hereby, it is provided that an optically binding binder is added to the sol and/or the gel, the gel is applied additively layer by layer and the binder is set using electromagnetic radiation so as to form the shaped bodies. The produced abrasive particle may be formed, in particular, by six intersecting or overlapping triangular volume regions.

A method of producing high strength shaped alumina by feeding alumina power into an agglomerator having a shaft with mixers able to displace the alumina power along the shaft, spraying a liquid binder onto the alumina power as it is displaced along the shaft to form a shaped alumina, and calcining the shaped alumina. The shaped alumina produced having a loose bulk density of greater than or equal to 1.20 g/ml, a surface area less than 10 m.sup.2/g, impurities of less than 5 ppm of individual metals and less than 9 ppm of impurities in total, and/or crush strength of greater than 12,000 psi.