42 results about "Wet-milling" patented technology

The present disclosure relates to the technical field of powder metallurgy, especially to a coarse grain cemented carbide and a preparation method thereof. Pseudo particles in coarse grain tungsten carbide are removed by pretreating process. Broken of the coarse grain tungsten carbide in traditional wet milling is avoid by solid-liquid stirring, spay granulating and surface covering, which also guarantee the uniform distribution of PEG and cobalt salt. Transformation from cobalt salt to cobalt is safely and effectively guaranteed by performing two sintering stages with different atmosphere and temperature to obtain a WC—Co mixture material. By performing spark plasma sintering process, the precipitation of nano fine grain tungsten carbide guarantees regrowth of defect occurred in pretreating process. The coarse grain cemented carbide with the average grain size of WC above 10 μm, the uniform cobalt phase distribution and be bending strength not less than 2200 MPa is prepared.

The utility model discloses a control system for a wet-method pulverizing production line, which relates to the technical field of mechanical pulverizing equipment and comprises an industrial personal computer and an industrial router connected with the industrial personal computer through Ethernet communication. The jaw crusher control component, the cone crusher control component, the transfer stock bin control component, the double-roller flour mill control component, the vibrating screen control component, the separating tower control component, the magnetic separator control component, the second dewatering screen control component and the first conveying belt control component are connected with the industrial router through Ethernet communication. A first conveying belt control component, a second conveying belt control component, a third conveying belt control component, a fourth conveying belt control component, a first conveying pump control component and a water spraying device control component; the device has the characteristics that the device is convenient to operate and control, one-key start, one-key stop and one-key sudden stop of the whole line can be realized, and the operation data of the whole line can be automatically stored; the device is matched with a wet-method pulverizing production line and is suitable for preparing mineral powder such as quartz sand powder, dolomite powder and calcium carbonate powder.

The application provides a force-vibration-noise monitoring and prediction system for wet milling, which comprises an externally-mounted cutting fluid transmission system, a numerical control machine tool and workpiece system, a sound pressure and vibration measurement system, and a three-way force measurement system, can monitor and obtain three-way milling force signals, three-way vibration signals and milling sound pressure signals under given milling parameters. Based on experimental data and grey correlation theory, the correlation degrees of force, vibration and noise about milling parameters during wet milling are better than those during dry milling, which shows that the system has a certain optimization effect on the cutting state. Based on the response surface analysis method, the prediction models of force, vibration and noise about milling parameters and the comprehensive model of noise about force-vibration-milling parameters are established. The results show that the noise comprehensive prediction model established based on milling force-vibration is more reliable, and the correlation between milling force, vibration and milling noise is higher. The application can provide scientific guidance for the monitoring and prediction of the milling processing state.

A fire retardant formulation includes a first flame retardant agent consisting of corn syrup, com molasses, sorghum molasses, pomegranate molasses, carob molasses, date molasses, a waste concentrate of alcohol distilling industry, sacharinic acid, a lignosulfonate, steepwater solubles formed using a wet milling process for corn, whey, a wine-making residue, brewers' condensed solubles, desugared corn symp, desugared com molasses, desugared (brown) rice syrup, desugared maple symp, desugared sorghum molasses, desugared agave symp, desugared pomegranate molasses, desugared carob molasses, desugared date molasses and admixtures thereof exhibiting flame retardant properties, and a second agent selected from a group consisting of a flame retardant colorant, an additional flame retardant agent and mixtures thereof. A method of suppressing a wild fire or forest fire includes the step of applying an effective amount of the fire retardant formulation to (a) the wild fire, (b) the forest fire, (c) an area to be protected from the wild fire or the forest fire or (d) combinations thereof.

The invention relates to the technical field of hot isostatic pressing method powder metallurgy, and discloses a preparation method of an aluminum-based silicon carbide composite material. The preparation method of the aluminum-based silicon carbide composite material comprises the steps that silicon carbide particles are subjected to high-temperature oxidation, the high-temperature oxidation temperature ranges from 650 DEG C to 1500 DEG C, and the particle size of the silicon carbide particles ranges from 1 micrometer to 10 micrometers. And the silicon carbide particles subjected to high-temperature oxidation and aluminum alloy powder are subjected to ball milling mixing, a wet milling medium comprises absolute ethyl alcohol, and composite powder is obtained. And the composite powder is subjected to sheath degassing treatment, and the composite powder sealing sheath is obtained. And the composite powder is sealed and sleeved for hot isostatic pressing, and an aluminum-based silicon carbide composite billet is obtained. The wettability between the silicon carbide particles and the aluminum alloy interface is improved, the interface bonding force is improved, formation of an interface aluminum carbide brittle phase is prevented or reduced, meanwhile, the silicon carbide particles can be evenly dispersed and distributed in the aluminum-based material, and the mechanical property of the aluminum-based silicon carbide composite material is improved.

This application belongs to the technical field of cemented carbide materials, specifically a high-toughness WC-Co cemented carbide and its preparation method. The preparation method includes: using tungsten carbide powder, cobalt powder, tantalum carbide powder, boron source, and tungsten powder as raw materials; mixing and ball-milling all the boron source, tungsten powder, and part of the cobalt powder to obtain a first slurry; mixing and ball-milling all the tungsten carbide powder, tantalum carbide powder, and the remaining cobalt powder to obtain a second slurry; mixing the first slurry and the second slurry, ball-milling, drying, and pressing; and then sintering in three stages with increased temperature to obtain the WC-Co cemented carbide. This application, through the synergistic design of "pre-alloying wet milling" and "medium-temperature heat preservation," guides the uncontrollable boron diffusion reaction process into a directional and gradual reaction path of "B→Co2B→WCoB," thereby avoiding the formation of harmful phases such as brittle WB, optimizing the microstructure of the WC-Co cemented carbide, and improving its mechanical properties.

This invention discloses a method for processing cocoa beans or cocoa granules, comprising the steps of: (a) adding water to cocoa beans or cocoa granules to form a suspension; (b) wet milling the suspension; (c) subjecting the suspension to heat treatment at a temperature of 70°C or lower; (d) separating the suspension into: an aqueous phase (heavy phase), a lipid phase including cocoa oil (light phase), and a solid phase including cocoa powder and fluid components; (e) continuously separating the fluid components from the solid phase obtained in step (d) by supplying the solid phase to a mixing device to obtain cocoa aroma and cocoa powder; wherein the mixing device... The device includes: a cylindrical tubular body having a horizontal axis, the tubular body having an inlet opening for a solid phase, an outlet opening for a dried solid phase, and an optional outlet opening for a vapor phase including cocoa aroma; end plates closing the tubular body at opposite ends; a coaxial sleeve for heating or cooling the inner wall of the tubular body to a temperature of 55°C to 150°C; and a bladed rotor supported in the tubular body for rotation, the blades of the bladed rotor being arranged in a helical shape and oriented for centrifugally separating the solid phase and simultaneously transporting the solid phase toward the outlet opening.

The invention discloses expansin recombinant aspergillus niger suitable for liquid fermentation as well as a construction method and application thereof, and belongs to the technical field of recombinant microorganisms. The technical problem of efficiently degrading cellulose is solved. The invention provides a recombinant aspergillus niger, and the recombinant aspergillus niger is obtained by taking aspergillus niger TH-2-D as a starting strain and replacing a saccharifying enzyme gene glaA as shown in SEQ ID NO.31 with a penicillium oxalicum expansin Swo gene as shown in SEQ ID NO.28. The invention also provides a preparation method of the recombinant aspergillus niger. The strain is subjected to liquid state fermentation, fermentation liquor is suitable for fiber puffing application, the cellulose degradation efficiency can be improved when the strain is used in cooperation with cellulase, linked starch can be effectively removed when the strain is used in cooperation with corn wet grinding enzyme, and the starch yield is increased.

The application belongs to the technical field of hard alloy materials, and particularly relates to a high-toughness WC-Co hard alloy and a preparation method thereof, the preparation method comprising the following steps: adopting tungsten carbide powder, cobalt powder, tantalum carbide powder, a boron source and tungsten powder as raw materials; mixing, ball-milling all the boron source, the tungsten powder and part of the cobalt powder to obtain a first slurry; mixing, ball-milling all the tungsten carbide powder, the tantalum carbide powder and the remaining cobalt powder to obtain a second slurry; mixing the first slurry and the second slurry, and performing ball-milling, drying and pressing; then performing sintering in three stages to obtain the WC-Co hard alloy. Through the synergistic design of "pre-alloying wet milling" and "intermediate temperature holding", the uncontrollable boron diffusion reaction process is guided to a directional and progressive reaction path of "B->Co2B->WCoB", so that the formation of harmful phases such as brittle WB is avoided, the micro morphology of the WC-Co hard alloy is optimized, and the mechanical properties are improved.

This invention discloses a pure bio-based PHA aqueous dispersion, its preparation method, and its applications, belonging to the field of pure bio-based polymer aqueous dispersion technology. This dispersion uses polyhydroxyalkanoates (PHA) as the sole film-forming agent, synergistically stabilized by Pickering solid particles and natural surfactants, and can optionally incorporate bio-based plasticizers. It is prepared by melt high-pressure homogenization, low-temperature wet milling, or solvent displacement methods to obtain emulsions or slurries with a PHA content of 40–85 wt% and a particle size of 0.2 µm–3 µm. It is free of petrochemical polymer protective colloids and perfluorinated and polyfluoroalkyl substances, and has a bio-based content ≥99%. Its excellent stability, rheological properties, and film-forming properties make it an ideal base material for constructing multilayer, programmable controlled-release, and degradable functional coating systems. It can be used in paper-based barrier coatings, adhesives, and advanced crop seed coatings, achieving excellent barrier, adhesive, and slow-release properties. The products meet industrial composting and resizing standards, demonstrating green environmental protection and industrialization potential.

The invention relates to a high-purity aluminum oxide brick prepared from corundum-aluminum hydroxide-aluminum nitride ingredients and a production process thereof, the high-purity aluminum oxide brick adopts an overall gradient design, the gradient distribution is as follows: a 1 / 4L working layer A, a 1 / 4L gradient transition layer I B1, a 1 / 4L gradient transition layer II B2 and a 1 / 4L heat insulation layer C, the gradient transition layer I B1 is a mixed ratio of 2 / 3 of the working layer A and 1 / 3 of the heat insulation layer C by weight, and the gradient transition layer II B2 is a mixed ratio of 2 / 3 of the working layer A and 1 / 3 of the heat insulation layer C by weight; and the gradient transition layer II B2 is formed by mixing 1 / 3 of the working layer A and 2 / 3 of the heat insulation layer C according to the weight ratio. The preparation method comprises the steps of raw material weighing, wet grinding, forming, drying and high-temperature sintering, formed green bricks are dried for 48-72 h at the temperature of 120 DEG C, heat preservation is conducted for 7 days for 168 h at the temperature of 650 DEG C, heat preservation is conducted for 6-8 h at the temperature of 1750-1800 DEG C, and sintering is conducted. The obtained high-purity aluminum oxide brick is excellent in performance, high in bonding strength on the working layer A, the gradient transition layer I B1, the gradient transition layer II B2 and the heat insulation layer C, good in overall performance, low in heat conductivity coefficient and good in heat preservation performance.

The application discloses a building ceramic wetting and powdering square anti-sticking wetting tower, and belongs to the technical field of wetting towers for building ceramic production. The building ceramic wetting and powdering square anti-sticking wetting tower comprises a support, a storage bin, a high-frequency vibration powder distributing device, an upper powder cylinder and an anti-sticking cloth cylinder body are sequentially and fixedly connected to the support from top to bottom, the top end and the bottom end of the high-frequency vibration powder distributing device are respectively connected with the storage bin and the upper powder cylinder in a flexible mode, the high-frequency vibration powder distributing device is used for realizing uniform falling of powder by means of multi-stage powder dispersing action, the upper powder cylinder is internally provided with uniformly distributed spray rods, the spray rods are connected with a water tank through water supply pipes, the bottom surface of each spray rod is provided with a plurality of downwardly arranged spray heads, and the spray heads are uniformly distributed in the vertical projection of the anti-sticking cloth cylinder body. The building ceramic wetting and powdering square anti-sticking wetting tower adopts the above structure, the uniformity of powder distribution and wetting is improved, and the problems of wall sticking and blockage of the discharge opening of the wetting tower are solved.

This invention discloses an alkali-resistant and fire-resistant coating for building applications, its preparation method, and its application. The material is composed of the following raw materials in parts by weight: 20-60 parts aluminum tripolyphosphate, 20-40 parts water glass, 10-20 parts silica, 5-10 parts alumina, 1-5 parts kaolin, 1-5 parts zirconium oxide, 1-5 parts anhydrous calcium sulfate, 5-40 parts modifier, 2-8 parts binder, 1-2 parts curing agent, and 1-2 parts defoamer. The preparation method involves mixing aluminum tripolyphosphate and the modifier in a ball mill for 10-120 minutes to obtain modified aluminum tripolyphosphate; ball milling with alcohol and water as wet milling liquid for 60-720 minutes at a milling rate of 100-800 r / min; drying the mixture for 36-48 hours; then placing the other raw materials and the modified aluminum tripolyphosphate powder into a beaker, adding water glass solution, and stirring on a magnetic stirrer to obtain the target alkali-resistant and fire-resistant coating. The alkali-resistant and fire-resistant coating for building applications of this invention has excellent alkali resistance, good mechanical properties and fire resistance and flame retardancy, and the preparation process is simple and suitable for industrial production.

The invention discloses a purification and depolymerization treatment method of ceramic powder for photocuring molding. The method comprises the following steps: carrying out wet ball milling on ceramic powder and an organic solvent in proportion to realize preliminary mixing and impurity separation; then drying the ball-milling tank so as to thoroughly remove the organic solvent and preliminarily cure the powder; carrying out dry ball milling on the ball milling tank containing the dry powder again so as to effectively scatter agglomerates formed in the drying process; and finally, sieving the powder to obtain the high-quality ceramic powder which is uniformly dispersed, fine in particle size and capable of effectively removing surface polar ions. According to the method, cleaning, refining and depolymerizing of the ceramic powder are efficiently completed under the condition that complex centrifugal or filtering equipment is not needed through the synergistic process of wet grinding, drying and dry grinding, and the method is simple in process, low in cost and suitable for industrial production.

The present invention provides an edible product. The method for producing cocoa pod shell powder comprises the steps of: making cocoa pod shells into sheets; incubating pieces of cocoa pod shells in water; in the wet milling process, 0.25 L to 1 L of water is added per kg of the cocoa pod shells, so that the cocoa pod shells become a paste, and slices of the cocoa pod shells are not dried after the incubation and before the cocoa pod shells become the paste in the wet milling process; and drying the paste at a temperature of at least 80 DEG C.

The invention provides a titanium alloy milling surface roughness prediction method based on Fe3O4 nano-particle reinforced cutting fluid. The titanium alloy milling surface roughness prediction method comprises the following steps: preparing the cutting fluid containing Fe3O4 nano-particles; establishing a milling force, milling noise and surface roughness acquisition system, and carrying out TC4 titanium alloy wet milling tests under different process parameters; drawing a change curve of milling force, noise and surface roughness test data, and comparing the performance difference before and after addition of the Fe3O4 nanoparticles; and constructing a prediction model based on a convolutional neural network and a relevance vector machine to realize accurate prediction of the surface roughness. The cutting fluid has the advantages that the Fe3O4 nanoparticles are added into the cutting fluid, so that the milling force and noise are remarkably reduced, the surface roughness is improved, and intelligent prediction of the surface quality can be effectively realized by combining experimental testing with a machine learning model.

The invention relates to a cerium-stabilized zirconia bead and application thereof in the papermaking industry. The cerium-stabilized zirconia bead comprises the following components: 75-85 wt% of zirconia, 15-20 wt% of cerium oxide and 0.5-2.5 wt% of ferric oxide. Compared with the prior art, the cerium-stabilized zirconia bead has better high-temperature stability and thermal shock resistance, is suitable for a high-temperature grinding environment, and has higher toughness and impact resistance. The zirconium bead with the formula is particularly suitable for severe working conditions such as high-energy-density grinding and large-particle-size material crushing, the service life is longer, and the breakage rate is lower. The calcite is subjected to wet grinding, the abrasion value of 60-grade calcium carbonate is reduced to be within 5%, and the abrasion value of 95-grade calcium carbonate is reduced to be within 3%; and the service life of the coating scraper is prolonged.

The present disclosure relates to the technical field of powder metallurgy, especially to a coarse grain cemented carbide and a preparation method thereof. Pseudo particles in coarse grain tungsten carbide are removed by pretreating process. Broken of the coarse grain tungsten carbide in traditional wet milling is avoid by solid-liquid stirring, spay granulating and surface covering, which also guarantee the uniform distribution of PEG and cobalt salt. Transformation from cobalt salt to cobalt is safely and effectively guaranteed by performing two sintering stages with different atmosphere and temperature to obtain a WC—Co mixture material. By performing spark plasma sintering process, the precipitation of nano fine grain tungsten carbide guarantees regrowth of defect occurred in pretreating process. The coarse grain cemented carbide with the average grain size of WC above 10 μm, the uniform cobalt phase distribution and he bending strength not less than 2200 MPa is prepared.

The application relates to the technical field of permanent ferrite, in particular to a low-temperature high-coercivity permanent ferrite and a production process, wherein SrCO3, CaCO3, Al2O3, Fe2O3, Cr2O3 and La2O3 are used as raw materials, and the raw materials are proportioned according to Sr 1‑x‑y Ca x La y Al z Cr w Fe 12‑z‑w O 19 (x=0.1-0.4; y=0-0.3; z=1.5-3, w=0-2, z+w<4) are proportioned, high-energy ball milling is first used, then low-energy ball milling is adopted, after the ball milling, the first ball milling material is sequentially dried, sieved and pre-sintered; subsequently, the pre-sintered material is coarsely broken, additives are added, high-energy ball milling is adopted for wet milling, then low-energy ball milling is adopted for secondary ball milling of the pre-sintered material, the secondary ball milling slurry is pressed into a green body sample under an external magnetic field, and a dense block high-coercivity ferrite magnet is prepared by high-temperature sintering, and the low-temperature high-coercivity ferrite magnet has high coercivity.

This invention discloses a foam stabilizer and anti-carbonation reinforcing agent for all-solid-waste foamed concrete, its preparation method, and its application. The invention uses ettringite, polycarboxylate superplasticizer, thickener, and water as raw materials. First, nano-ettringite is obtained through wet milling, and then mixed uniformly with the thickener to obtain the foam stabilizer and anti-carbonation reinforcing agent for all-solid-waste foamed concrete. When the foam stabilizer and anti-carbonation reinforcing agent prepared by this invention is added at a dosage of 2.8-8.8%, the foam bleeding rate after 1 hour is ≤10%, the 7-day strength of all-solid-waste foamed concrete is increased by more than 30%, the 28-day strength is increased by more than 20%, and the 28-day anti-carbonation ability is increased by more than 20%.

The invention relates to ball-milled micro-nano zero-valent iron and a preparation process and a reduction performance evaluation method thereof, an iron-based material is prepared through wet ball milling, zero-valent iron or zero-valent iron, ferroferric oxide and a wet milling aid are mixed and then subjected to ball milling together, and a high-reducibility iron-based material with a micron or submicron scale is obtained by controlling ball milling parameters or adding a modified material. A performance evaluation method based on electron supply and electron selection is formed on the basis of the micro-nano iron-based material, and mainly comprises two aspects of accounting electron supply through the content of zero-valent iron and electrochemical clear electron transfer. According to the invention, optimization of a continuous ball-milling process of the high-performance zero-valent iron material and innovation of a ball-milling method for enhancing electron transfer by adding trioxide are realized, a performance evaluation method based on electron supply and electron transfer is created, and methodological support is provided for preparation and application of the micro-nano zero-valent iron material.

This invention discloses a high-toughness cemented carbide and its preparation method, belonging to the technical field of cemented carbide materials. The method includes: firstly, ball milling and mixing tantalum carbide powder with a liquid medium to prepare a tantalum carbide dispersion slurry; then, wet milling tungsten carbide powder (5-30% by weight of tungsten carbide powder) and cobalt powder in a liquid medium to prepare a tungsten carbide-cobalt mixed slurry; mixing the tungsten carbide-cobalt mixed slurry with the tantalum carbide dispersion slurry to obtain a mixed slurry; then adding the remaining tungsten carbide powder and a forming agent to the mixed slurry and continuing ball milling; after ball milling, drying, granulation, molding, and sintering to obtain the high-toughness cemented carbide. This invention can effectively disperse tantalum carbide, thereby reducing the agglomeration of tantalum carbide in the cemented carbide, preventing tantalum carbide agglomeration sites from becoming fracture sources, significantly enhancing the fracture toughness while maintaining the high hardness of the cemented carbide, and the process is simple, easy to implement, and suitable for industrial production.

FIELD: food industry.SUBSTANCE: method for producing a plant-based beverage is proposed, comprising: wet milling in an aqueous medium of plant-based raw material to obtain a raw material suspension; sifting the raw material suspension to obtain primary milk and a fibrous suspension; grinding the fibrous suspension; treating the fibrous suspension with a protease selected from the group consisting of a metalloendoprotease and a trypsin selected from the group consisting of bacterial trypsin and fungal trypsin; treating the fibrous suspension specified protease at a temperature below the specified operating temperature for the specified protease to obtain a processed fibre suspension; and sifting the processed fibre suspension to obtain secondary milk and clean fibre. A method is proposed for reducing the viscosity of the fibrous suspension.EFFECT: preservation of the quality of the extracted material, including beta-glucan and protein, by using low temperatures and minimal protease activity and digestion time during extraction.22 cl, 10 dwg, 28 tbl, 24 ex

The invention discloses a ceramic slurry preparation process optimization method based on an agent model, which comprises the following steps: collecting historical production data to obtain a data sample related to a ball milling process, and dividing the data sample into a training set and a verification set; constructing data samples of I input and O output, constructing an agent model, and forming mapping from an input variable to an output variable; carrying out sensitivity analysis on the data sample to identify the influence degree of each input variable on an output result, so as to reveal dominant factors influencing the performance of the slurry; global optimization is carried out in the reduced optimization search space, and rapid prediction of the performance of the ball-milled slurry and parameter selection of an optimized ball-milling process are achieved. According to the method, the key process parameters influencing the performance of the ball-milling slurry can be obtained, the parameters influencing the performance of the ball-milling slurry can be rapidly and accurately predicted, a better solution is provided for optimization of a ceramic slurry wet-method powder preparation process, and meanwhile the quality of a ceramic product is controlled from a raw material source.

This invention provides a ternary cathode material precursor, its preparation method, and its application. The preparation method includes: (1) wet milling a metal salt, a binder, a defoamer, and a solvent to obtain a slurry; (2) spray granulating the slurry under a pure oxygen atmosphere to obtain the ternary cathode material precursor. This invention uses solid-phase spray granulation technology to replace the traditional co-precipitation process for preparing ternary cathode material precursors, resulting in high production efficiency, short cycle time, no need for the addition of complexing agents with irritating odors, and simple process and equipment, making it highly feasible for industrialization.

The application belongs to the field of powder metallurgy and cermet material, and discloses a preparation method of high-entropy binder phase Ti(C, N) based cermet material and a product thereof. The preparation method uses Fe, Mn, Co and Cr elemental metal powders as raw materials, mixes and performs ball milling to obtain high-entropy alloy powder, and then the high-entropy alloy powder is mixed with Ti(C, N) powder and secondary carbide powder to obtain a mixed powder, and then a forming agent and anhydrous ethanol are sequentially added to perform wet milling to obtain a mixed slurry, which is dried, ground, sieved, pressed, degreased and sintered to obtain the high-entropy alloy Ti(C, N) based cermet material. The obtained high-entropy alloy Ti(C, N) based cermet material has uniformly distributed core-ring structures, and the ring phase transition layer with moderate thickness effectively inhibits the growth of Ti(C, N) grains, achieves fine-grain strengthening and solid solution strengthening, has good bending strength, fracture toughness, high hardness and high density, and can be used for high-speed cutting, finishing and semi-finishing under complex conditions.

The instant application provides methods to improve the total starch yield and / or gluten yield from corn kernels in a wet milling process, the method comprising admixing corn kernels or a fraction of the corn kernels with an enzyme composition comprising an effective amount of one or more hydrolytic enzymes, wherein at least one of said hydrolytic enzymes is selected from the group consisting of a GH30 polypeptide, a GH5 polypeptide or a combination thereof.

This invention discloses a method for preparing and applying N,S co-doped carbon-coated nanoparticle Na3V2(PO4)2F3 cathode material, belonging to the field of sodium-ion battery material technology. The preparation method includes the following steps: wet milling and drying of vanadium source, phosphorus source, fluorine source, sodium source, carbon source, and thiourea to obtain mixture A; heating and sintering mixture A under an inert atmosphere to obtain powder A; ball milling and sieving of powder A to obtain N,S co-doped carbon-coated nanoparticle Na3V2(PO4)2F3 cathode material. The preparation method disclosed in this invention achieves nano-sizing, carbon coating, and elemental doping of Na3V2(PO4)2F3 material simultaneously, thereby improving discharge capacity and cycle stability through the synergistic effect of these three strategies.

The present invention relates to a treated inorganic oxide slurry and process of making including: a. treating an inorganic oxide particle with aqueous inorganic metal salt; b. washing the treated inorganic oxide particle with water and removing aqueous inorganic metal salt to form a washed slurry having 30-60% by weight treated inorganic oxide particles in water; c. milling the washed slurry to reduce the particle size of the treated inorganic oxide particles using a wet milling process to form a milled slurry having a PSD 0.509 of less than 50%; d. drying the milled slurry to form a dried particle; and e. contacting the dried particle with water and dispersant to form a product slurry. The process uses less energy and water compared with prior art processes that include jet milling steps and full drying steps, while maintaining performance. The slurries can be used in applications including coatings and paper.

The application discloses a method for improving resistant starch content of cyperus esculentus by ultra-high pressure treatment and relates to the technical field of starch processing. The method comprises the following steps: (1) compounding cyperus esculentus starch and polyphenols in proportion and incubating in a 25 DEG C water bath for 30 min; (2) performing ultra-high pressure treatment on the mixture obtained in the step (1); and (3) freeze-drying the mixture after the ultra-high pressure treatment to obtain cyperus esculentus resistant starch. The cyperus esculentus starch is extracted by a wet milling and alcohol extraction method, and the steps are as follows: after washing cyperus esculentus, the cyperus esculentus is soaked in deionized water at room temperature for 12 h, then is uniformly pulped after being drained, is filtered through a 100-mesh screen, and then the filtrate is left to stand overnight; the supernatant is discarded, and the precipitate is extracted with anhydrous ethanol for 1 h, and the extraction is repeated for three times; the precipitate is collected, dried and ground to obtain cyperus esculentus starch; the solid-liquid ratio in the uniform pulping process is 1:4 (w / v); and the solid-liquid ratio in the extraction process is 1:1 (v / v). The application provides a method for improving resistant starch content of cyperus esculentus by ultra-high pressure processing, and the produced starch has strong digestibility and a more compact structure.