Disclosed in certain embodiments are hybrid metal oxide particles and methods of preparing the same. In at least one embodiment, hybrid metal oxide particles comprise a continuous matrix of a first metal oxide having embedded therein an array of metal oxide particles comprising a second metal oxide. In at least one embodiment, the hybrid metal oxide particles are substantially non-porous.

Thermoelectric (TE) nanocomposite material that includes at least one component consisting of nanocrystals. A TE nanocomposite material in accordance with the present invention can include, but is not limited to, multiple nanocrystalline structures, nanocrystal networks or partial networks, or multi-component materials, with some components forming connected interpenetrating networks including nanocrystalline networks. The TE nanocomposite material can be in the form of a bulk solid having semiconductor nanocrystallites that form an electrically conductive network within the material. In other embodiments, the TE nanocomposite material can be a nanocomposite thermoelectric material having one network of p-type or n-type semiconductor domains and a low thermal conductivity semiconductor or dielectric network or domains separating the p-type or n-type domains that provides efficient phonon scattering to reduce thermal conductivity while maintaining the electrical properties of the p-type or n-type semiconductor.

A pigment granule having an irregular polyhedral shape with rounded edges and a method for the production of the granules by the use of a high speed agitated granulating machine provided with agitating means for agitating a pigment substance for granulation, spray means for spraying or injecting a binding liquid on the pigment substance while the mixture is processed through the turbulizer and drying means for drying the particles, characterized by effecting the production by causing the means to act on the substance for granulation simultaneously thereby performing the agitating and granulation.

The invention pertains to the field of materials based on calcium carbonate and in particular to the use thereof as a filler in polymeric plastics. The invention provides a method for reducing the hygroscopicity of a material (M) comprising calcium carbonate by treatment with at least one homopolymer grinding assistant (P) which is neutralized in a particular way. The invention pertains also to a method for producing said material (M), which is then of reduced hygroscopicity.

The present disclosure relates to a method for preparation of a high temperature-resistant bismuth yellow pigment. The method comprises: mixing an oxide which served as a matrix and dopan with a bismuth source, a vanadium source, or a molybdenum source, and then placing the mixture into a mill for grinding to obtain a precursor; further calcining and crushing the precursor to obtain the high temperature-resistant bismuth yellow pigment powder. The bismuth yellow pigment has a bright color, a b* value greater than 90, a stable performance, and a high heat-resistance above 800° C. The method is environmentally friendly without waste, and reaction conditions are simple. Doping of BiVO.sub.4 crystal lattices by incorporation of oxides can be achieved, so that the particle size and distribution of the bismuth yellow pigment can be effectively controlled while the color performance of the bismuth yellow pigment is greatly improved.

The disclosure relates to a method for mechanochemical preparation of an iron red pigment, which comprise steps: mixing a clay mineral, a soluble iron source and an alkali source in a mill for grinding to obtain a precursor, wherein the ratio of ball to material is controlled at 20-50, the grinding speed is 300-1200 rpm, and the grinding time is 30-360 min; and calcining the precursor at 500-900° C. for 30-120 min to obtain a high-performance iron oxide red/clay mineral hybrid pigment. The iron oxide red/clay mineral hybrid pigment has a bright and beautiful color, high-temperature and acid resistance, and can satisfy requirements for high-performance iron oxide red pigments in fields of paints, inks, ceramics, anti-corrosive coatings, etc. Furthermore the method is a simple process without waste that is environmentally friendly and suitable for industrialized production, thus it is expected to replace existing processes of iron oxide red pigments.

The invention relates to composite particles, comprising a carrier particle and an at least partial surface coating, the carrier particle comprising a quartz and a layered silicate and the surface of the composite particle having at least one hydrophilic region and at least one hydrophobic region. The invention also relates to a method for producing composite particles, comprising the steps: a) providing carrier particles, comprising a quartz and a layered silicate, b) introducing the carrier particles into a mixing device, c) charging the carrier particles with a coating composition, d) coating the carrier particles with the coating composition by mixing the carrier particles with the coating composition, with the introduction of shear energy, e) subjecting the coated carrier particles to temperature. In addition, the invention relates to a mineral cast part or to a composite workpiece which comprises the above-described composite particles.

A method of producing glass-coated aluminum nitride particles which includes a first step of mixing, while applying a shearing force by a mechano-chemical method, a mixture of aluminum nitride particles, and a composition powder containing a glass component, a second step of heat treating the mixture at a temperature of the glass transition temperature of the glass component or more, and 2000° C. or less, and a third step of crushing the heat treated product.

A method for manufacturing a diatomaceous earth functional filler product with detectable or non-detectable crystalline silica includes the steps of: selecting a diatomaceous earth ore; simultaneously milling and flash-drying the diatomaceous earth ore; beneficiating the milled and flash-dried diamtomaceous earth ore; blending the beneficiated diatomaceous earth ore with a fluxing agent; calcining the blended diatomaceous earth ore and fluxing agent to produce an initial diatomaceous earth powder; air-classifying the initial diatomaceous earth powder to produce a first fraction including the diatomaceous earth functional filler product and a second fraction including coarse particles; further milling the coarse particles to produce additional diatomaceous earth powder; and re-circulating the additional diatomaceous earth powder to blend the additional diatomaceous earth powder with the initial diatomaceous earth powder.

Modified copper chromite spinel pigments exhibit lower coefficients of thermal expansion than unmodified structures. Three methods exist to modify the pigments: (1) the incorporation of secondary modifiers into the pigment core composition, (2) control of the pigment firing profile, including both the temperature and the soak time, and (3) control of the pigment core composition.