摘要:
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 BiVO4 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.
摘要:
A method for production of coated mineral grit for the manufacture of coating elements with a bituminous support, or with a support comprising a vinyl or acrylic adhesive, for roofing of buildings, the method includes: adding rough mineral grit to a mixer together with a first treatment mixture; mixing the rough mineral grit and the first treatment mixture until a coated mineral grit is obtained; heating the coated mineral grit to a predetermined firing temperature (Tc); and after heating the coated mineral grit, cooling the coated mineral grit to a predetermined intermediate cooling temperature (Tri). The first treatment mixture comprises: water; at least one pigment; at least one selected from the group consisting of sodium silicate and potassium silicate; kaolin; and at least one selected from the group consisting of an organo-siloxane and an organo-silane.
摘要:
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.
摘要:
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.
摘要:
The present invention relates to a fluid shockwave reactor. The fluid shockwave reactor introduces laser resonance theory into the field of fluid physics. It consists of a shockwave resonance energy concentration device and at least one set of jet collision device. The shockwave resonance energy concentration device can enhance the shockwave strength produced during jet collisions; strengthen the ultrahigh pressure and cavitation effect of the shockwave field; it can also intensify physical and chemical effects on the processed materials. The fluid shockwave reactor can achieve ultrafine crushing on the fluid materials with lower energy consumption. Under certain technological conditions, the fluid shockwave reactor may also effectively catalytize the chemical reaction process on fluid materials.
摘要:
A method of preparing carbon-coated metal oxide nano-particles and carbon-coated metal oxide nano-particles prepared with the same method are described. The method includes the following steps at least. A precursor of a polymer is polymerized on metal oxide nano-particles to form polymer-coated metal oxide nano-particles. Then, pyrolysis is conducted to carbonize the polymer coated on the metal oxide nano-particles, so as to form carbon-coated metal oxide nano-particles.
摘要:
Disclosed herein is a method of calcining particulate material, such as kaolin. The method comprises providing a feed mixture comprising a particulate material, such as hydrous kaolin, wherein at least a portion of the particulate feed is coated with a liquid fuel. The method further comprises heating the particulate feed mixture to calcine the particulate feed and burn the liquid fuel to form a calcined product. The liquid fuel coating can act as a secondary, indirect heat source for calcining. The overall calcining temperatures and/or times can be reduced as a result of adding the liquid fuel.
摘要:
The invention relates to the production of mixed-metal-oxide inorganic pigments, using industrial waste as raw materials, comprising the following steps: (i) characterization and selection of wastes; (ii) their treatment, if required; (iii) formulation+dosing+mixing of components; (iv) drying+calcination; and (v) washing+milling. Selected wastes might be used in the as-received condition or after drying or calcination. The present invention deals with materials that are produced by colorants or pigments producers mainly for use in the ceramic sector, since formulations are stable at high temperatures and act as colorants of glazes or ceramic bodies. The use of high temperatures might also assure the desirable inertization of possible hazardous species.
摘要:
An industrially advantageous process for producing at once a composite material of an organic component having functionality and a ceramic component based on an idea different from the conventional techniques, in which (C) an aqueous slurry in a fine droplet form containing (A) an organic component having a functionality and (B) a ceramic component, is supplied into a chamber of a spray dryer, and simultaneously hot air is blown into the chamber, whereby drying and fine powderization of the droplets are attained through contact of the droplets with the hot air in the chamber, to produce at once a fine powdery hybrid material through hybridization of the organic component (A) and the ceramic component (B).
摘要:
An improved process and apparatus for producing concentrated kaolin slurries and spray dried kaolin particulates through the use of an arrangement where an evaporation system for producing concentrated slurries is coupled with a spray dryer such that off gases from the spray dryer are used to supply heat energy to the spray dryer and to the evaporation system.