13 results about "PARTICLE SIZE REDUCTION" patented technology

The present invention relates to a method for making an electrode provided with a catalytic coating for electrocatalytic processes, preferably gas evolution electrode, comprising: a- providing a precursor comprising salts of metals, wherein said metals are selected from a group consisting of combinations of one or more noble metal with one or more rare earth metal, b- heating said precursor to a temperature comprised between 300 and 700oC under oxygen or air, thus obtaining a dried powder comprising oxides of said metals, c- preferably, subjecting the dried powder to a process of particle size reduction, d- optionally storing or transferring said dried powder, e- dispersing said dried powder in a liquid thus obtaining a catalytic dispersion, f- applying said catalytic dispersion by a coating technique on a thermally unstable substrate thus forming a coated substrate, g- drying said coated substrate thus forming said electrode provided with a catalytic coating

The present invention mainly relates to a process for preparing sub-micrometer-sized graphitic carbon nitrides, comprising a step of milling or sonicating graphitic carbon nitrides. The present invention also relates to a sub-micrometer-sized graphitic carbon nitride having a volume size distribution in which the particle size of less than 1 μm dominates more than 50% of a volume of total particles in the suspension.

The application relates to the technical field of sodium ion batteries, in particular to a Prussian blue sodium ion battery positive electrode material and a preparation method and application thereof. In the preparation method, when the Prussian blue sodium ion battery positive electrode material is prepared, a specific complexing agent (mellitic acid, methane tricarboxylic acid or nitrilotriacetic acid) is selected, and a non-ionic surfactant is added, so that the growth of the Prussian blue material can be guided, and problems such as particle size reduction and uneven distribution caused by excessively high concentration when a conventional complexing agent such as sodium citrate is used can be overcome. The preparation method can not only improve the sodium content of the prepared Prussian blue material, thereby improving the specific capacity of the material, but also control the nucleation and growth speed of the obtained Prussian blue material, form a large-size single crystal, and the low-defect structure of the single crystal is beneficial to extremely low metal ion dissolution, excellent specific capacity and excellent Na + diffusion kinetics, and alleviates the rate and capacity attenuation caused by the long sodium ion diffusion path of the polycrystalline structure.

The invention comprises a method of sequestering carbon dioxide. The method comprises delivering hyaloclastite, a volcanic glass or pumice to a mill capable of reducing the particle size of the hyaloclastite, a volcanic glass or pumice; processing the hyaloclastite, a volcanic glass or pumice in the mill so that the processed hyaloclastite, a volcanic glass or pumice has a volume-based mean particle size of less than or equal to 40 μm; and exposing the hyaloclastite, a volcanic glass or pumice to carbon dioxide in gaseous, liquid or solid form during or after the particle reduction process.

The utility model discloses a pumping device for a fire retardant coating curing agent, and relates to the technical field of fire retardant coating conveying equipment. The stirring trolley comprises a trolley body and a stirring tank, supporting assemblies are arranged on the top face of the trolley body and the surface of the stirring tank so as to enable the trolley body and the stirring tank to be in an overhead state, a stirring assembly is arranged on the stirring tank, and a metal screen is fixedly connected into the stirring tank in an inserted mode. According to the utility model, the trolley body and the stirring tank are overhead through the supporting assembly, so that the stirring tank is located at a proper position, when the rotating part of the stirring assembly rotates, the grinding assembly arranged on the rotating part rotates along with the rotating part, and the grinding assembly grinds a large-particle fire-retardant coating curing agent in the metal screen mesh while stirring, so that the fire-retardant coating curing agent is uniformly stirred; the particle size of the curing agent particles is reduced, so that the curing agent particles can be conveniently and uniformly mixed with the fireproof coating subsequently, blockage in the pumping process is prevented, and the pumping process is ensured to be smoothly carried out.

The present invention relates to a particle size reduction process using inert gas for preparation of nitrosamine free Cinacalcet salt. Wherein, Cinacalcet salt is substantially free of nitrosamine impurities.

A method for thermal processing and catalytic cracking of a biomass to effect distillate oil recovery can include particle size reduction, slurrying the biomass with a carrier fluid to create a reaction mixture, slurrying a catalyst with a carrier fluid to create a catalyst slurry, heating the reaction mixture and / or the catalyst slurry, and depolymerizing the reaction mixture with the catalyst. The reaction mixture can undergo distillation and fractionation to produce distillate fractions that include naphtha, kerosene, and diesel. In some embodiments, thermal processing and catalytic cracking includes vaporization of the biomass followed by distillation and fractionation. In some embodiments, a resulting distillate can be used as a carrier fluid. In some embodiments, the method can include desulfurization, dehydration, and / or decontamination.

The invention relates to a coal gangue powder surface activation, dispersion and modification preparation method, which comprises the following steps: 1, raw material preparation: taking coal gangue with the particle size of less than or equal to 50mm, calcining the coal gangue in an oxidizing atmosphere at 900 DEG C for 3 hours, and naturally cooling; 2, mechanical pre-activation: crushing and screening the calcined coal gangue raw ore, mixing with a grinding aid, and putting into a planetary ball mill to obtain pre-activated coal gangue powder with the particle size of less than 60 microns and the specific surface area of about 500m < 2 > / kg; 3, gradient thermal activation: putting the coal gangue powder pre-activated powder into a tubular furnace, and naturally cooling to obtain thermal activated powder; and 4, composite interface modification. According to the preparation method, mechanical pre-activation (particle size reduction and lattice destruction), gradient thermal activation (step-by-step impurity removal and phase change) and composite interface modification (organic functional group grafting and dispersant coating) are combined, and integrated regulation and control of structure activation, surface modification and dispersion stability are achieved.

Provided herein are methods for the disassembly of epoxy-based polymers (EBPs) or fiber- reinforced EBPs (FREBPs). The methods may comprise any one or more of the following: (1) subjecting a raw material comprising one or more epoxy-based polymers to a particle size reduction step, thereby producing a particulate starting material; (2) combining a particulate starting material comprising an epoxy -based polymer and an aqueous base component to produce a heterogenous reaction mixture; (3) conducting a heterogenous reaction within the heterogenous reaction mixture, thereby producing a product mixture; and (4) recovering one or more desirable chemical products from the product mixture.

The invention relates to a method for recycling waste refractory products which are initially arranged in a working position in a thermal plant and which are contaminated by alkaline cyanides, the method comprises the following successive steps: a)-removing the waste refractory product from the working position,-reducing the particle size of the waste refractory product to obtain a particle mixture; b) contacting the particle mixture with a solution comprising a thiosulfate compound or a "thiosulfate solution" before and / or during the removal, and / or between the removal and the particle size reduction, and / or during the particle size reduction of step a) and / or after step a), to obtain a two-phase mixture; and e) separating the liquid phase from the two-phase mixture and using the particle mixture to produce a new refractory product.

Provided are a conductor dispersion solution including a carbon-based conductor, a first dispersant including a vinyl-based polymer containing a nitrogen atom, a second dispersant including a primary component and an auxiliary component, and a dispersion medium, and a method for manufacturing the same. The primary component includes a cellulose-based polymer, the auxiliary component includes at least one of a lactone-based polymer and a glycol-based polymer, and by manufacturing a conductor dispersion solution simultaneously including the first dispersant and the second dispersant, a particle size reduction of dispersed particles in the dispersion solution and a viscosity reduction of the dispersion solution are induced, so that the carbon-based conductor can have a characteristic of being uniformly and effectively dispersed in the dispersion solution.

The invention belongs to the technical field of preparation of lithium-based compounds, and particularly relates to a preparation method of nano lithium sulfide suitable for a sulfide electrolyte system, which comprises the following steps: carrying out ball milling on lithium sulfide to be refined by adopting a small-diameter zirconium oxide ball and medium-speed ball milling mode, and carrying out interface modification on the lithium sulfide subjected to ball milling by adopting a surface modifier to obtain the nano lithium sulfide. The surface modifier is adsorbed on the surface of lithium sulfide to reduce interface energy, reagglomeration of refined particles is inhibited, and a uniformly dispersed suspension is prepared. And removing the dispersing agent in the suspension through spray drying or vacuum freeze drying to obtain refined lithium sulfide. The preparation method for realizing the particle size reduction of the lithium sulfide by optimizing a ball milling process and regulating and controlling an auxiliary agent is suitable for efficient synthesis of sulfide solid electrolyte, efficient refining (D50lt, 300nm) of Li2S particles is realized, and the reaction efficiency of the Li2S particles and P2S5 is improved.

The present invention relates to a method for producing cocoa butter infused with freeze-dried fruit powder using a melanger. The method ensures homogeneous integration of fruit powder into cocoa butter, enhancing flavor, color, and nutritional benefits while maintaining a smooth and creamy texture. The use of a melanger enables uniform particle size reduction and dispersion of the fruit powder, resulting in a versatile product suitable for culinary, cosmetic, and functional applications.