180 results about "Particle aggregation" patented technology

The invention discloses a plastic particle mixer for cable material processing, and relates to the related technical field of plastic waste recycling, the plastic particle mixer comprises an arranged mixing box, two groups of feeding hoppers are arranged on the mixing box, the lower parts of the feeding hoppers are communicated with the top of the mixing box through feeding pipelines, and a driving box is mounted on the mixing box; a motor is arranged in the driving box, the output end of the motor is connected with a rotating shaft, the rotating shaft is connected into the mixing box in a penetrating manner, a stirring structure is mounted on the outer side of the rotating shaft, the stirring structure comprises a stirring part and a scraping plate which are mounted on the outer side of the rotating shaft, and a gas conveying assembly is mounted on the outer side of the rotating shaft. According to the plastic particle mixer for cable material processing, the stirring structure rotates in the mixing box to mix particles, input recycled plastic particles are scattered through cooperation of gas, the problem of uneven mixing caused by particle aggregation is avoided, and the overall mixing efficiency is improved.

The invention belongs to the field of composite materials, and relates to a preparation method of a modified composite material with uniformly dispersed high-content aluminum alloy particles, which comprises the following steps: mixing 20-50wt% of aluminum alloy particles and epoxy resin according to a certain proportion to obtain a mixture, and combining the mixture with carbon fibers to obtain a prepreg; paving a plurality of layers of prepregs on the forming mold, and sealing a bag to obtain a cured and formed sample piece; the sample piece is put into vibration equipment to be heated and cured, the curing temperature ranges from 75 DEG C to 85 DEG C, and heat preservation is conducted within 60 min; putting the sample piece into an autoclave, heating to 110-130 DEG C, pressurizing to 0.5 MPa or above, keeping the temperature for 90 minutes or above, and cooling to obtain a cured and molded modified composite material; and vacuumizing is kept during both the heating period and the cooling period. According to the invention, through a composite curing method of first vibration and then high pressure, the problems of particle aggregation and overhigh porosity in the high-content aluminum alloy particle modified composite material can be smoothly solved.

The invention discloses a small particle shape and granularity detection method based on an image. According to the method, an image device is combined with an object space telecentric lens to collect small particle images; performing target detection on the particles in the image by adopting an improved YOLOv9-CSA model to obtain a bounding box of the particles; inputting the bounding box as a prompt into the SAM2-PDA model, and generating an initial segmentation mask of the particles; for a particle aggregation scene, identifying and screening out single particle masks which are not shielded through a particle shape detection algorithm based on contour geometric features; and calculating the area and the equivalent circle diameter of the particles based on the screened masks, and finally obtaining accurate particle size distribution data such as D10, D50, D90, the average diameter and the total number of the particles. According to the method, through cooperative work of the constructed YOLOv9-CSA and SAM2-PDA and in combination with geometric feature particle screening, the precision and reliability of particle size analysis of the small particles are effectively improved, and an efficient and automatic solution is provided for industrial-grade particle size detection.

A network structure with a novel composition is obtained by calcining an aggregate of silica gel particles. The network structure comprises a multitude of silicon dioxide-based particle fragments (51) and a multitude of silicon dioxide-based connecting fragments (52) that link the particle fragments (51) to form a three-dimensional, interconnected network. For example, the network structure can be formed on an air-permeable base material.

One aspect of the present disclosure provides composite particles comprising: a plurality of coated particles that contain an inorganic crystal and a reduced graphene oxide and have a coating layer provided on the surface of the inorganic crystal; and a sheet containing a reduced graphene oxide, wherein the sheet includes secondary particles in which the plurality of coated particles are aggregated.

The invention relates to the technical field of all-solid-state lithium batteries, and discloses a high-ionic-conductivity inorganic nanoparticle dispersed polyether composite solid electrolyte composition, which is prepared from the following components in percentage by weight: 35 to 65 percent of inorganic solid electrolyte nanoparticles, 15 to 45 percent of polyether polymer matrix precursor, 2 to 8 percent of cross-linking agent, 10 to 20 percent of lithium salt and initiator, wherein the molar ratio of lithium salt to ether oxygen atoms is 1 / 20, a three-dimensional cross-linked network is constructed through an in-situ ultraviolet polymerization reaction, high-content inorganic nanoparticles are physically locked in a polymer grid, and a continuous ion transmission channel is constructed at room temperature through a percolation effect while particle aggregation is inhibited, so that the high-content inorganic nanoparticles can be prepared. The composition has excellent ionic conductivity and mechanical flexibility, effectively solves the problems of high brittleness and low conductivity of the traditional composite electrolyte, only needs wet coating in the preparation process, and is suitable for large-area film production.

The invention discloses a wafer IPA drying method for improving wafer edge particle aggregation, and belongs to the technical field of semiconductor manufacturing. The method comprises the following steps: after a wafer is cleaned, lifting the wafer from pure water to the 4 / 5 position of the wafer to be separated from the water surface by using a bottom supporting table, and then clamping the 2 / 3 edge position of the wafer by using a top clamp to continuously lift until the wafer is completely separated from the water surface; in the lifting process, the surface of the wafer is purged through mixed gas of N2 and IPA, and the completely-dried wafer is obtained. According to the invention, the wafer is dried by replacing a wafer lifting mode and cooperating with an IPA drying mode, so that the wafer can be completely dried, and the watermark problem caused by local dryness due to contact between the wafer and the supporting table in the medium replacement process can be avoided. The method is wide in practicability, simple in technological process, short in treatment time, low in cost and good in application prospect.

The utility model relates to the technical field of chemical reaction kettles, provides an anti-precipitation reaction kettle for organic chemical industry, and solves the problems that the existing reaction kettle is low in mixing efficiency due to design defects and is difficult to meet the requirements of upper and lower layers in the kettle. The reaction kettle comprises a kettle body, a baffle assembly is arranged in the kettle body, the baffle assembly comprises at least three baffles which are uniformly distributed around the axis of the kettle body, each baffle is provided with at least one flow guide area, and a plurality of flow guide holes are formed in each flow guide area; the flow guide assemblies are arranged on one sides of the flow guide areas of the baffles, each flow guide assembly comprises a valve plate and a reset torsion spring, and the valve plates are rotationally connected with the baffles through the reset torsion springs; the stirring assembly comprises an upper-layer stirrer and a lower-layer stirrer which are independently driven by split shafts; the upper-layer stirrer rotates at a high speed to generate radial flow and disperse particle aggregation, and the lower-layer stirrer rotates at a low speed to form axial wall-scraping flow to prevent bottom precipitation.

Provided is a soft-magnetic flat powder that can contribute to the noise suppression performance of a magnetic sheet 2. The magnetic sheet (2) comprises a matrix (4) and a powder dispersed in the matrix (4). The matrix 4 is a polymer composition. The base material of the polymer composition is a rubber or a resin. The powder is an aggregate of a plurality of flat particles 6. These flat particles 6 are composed of an Fe-Si-Al-based alloy. This alloy contains B in the amount of 0.001-0.020 mass%, inclusive, C in the amount of 0.005-0.050 mass%, inclusive, and no more than 1.00 mass% of O.

The invention relates to the technical field of composite material preparation, in particular to an efficient preparation process of a continuous fiber reinforced silicon carbide ceramic matrix composite material, which comprises the following steps: selecting silicon carbide powder and phenolic resin powder, putting into a sodium carboxymethyl cellulose aqueous solution, and stirring; in the stirring process, a non-uniform index is obtained according to the change condition of the pixel reflectivity in the hyperspectral image of the mixed slurry, and then the local distribution difference degree is obtained; the method comprises the following steps: acquiring a particle aggregation characterization value at each moment based on fluctuation of a local distribution difference degree, calculating a stirring effective degree to control a stirring speed, putting continuous carbon fiber plain cloth into resin matrix slurry, dipping, drying and curing to obtain a resin matrix composite material biscuit, and carbonizing to obtain the continuous fiber reinforced porous carbon matrix composite material. And putting the mixture into a vacuum sintering furnace for melt siliconizing treatment to obtain the continuous fiber reinforced silicon carbide ceramic matrix composite material. The compact uniformity of the continuous fiber reinforced silicon carbide ceramic-based composite material is improved.

The invention discloses a device and a method for preparing a tungsten-copper particle gradient composite material through vibration induction, and belongs to the crossing field of powder metallurgy and material forming machining. Aiming at the problems of powder agglomeration, non-uniform component distribution, difficulty in accurate control of a gradient structure and poor interface continuity in the preparation of a traditional tungsten-copper gradient composite material, a powder mixing-vibration mold filling-hot pressing sintering integrated process is adopted; tungsten copper powder distribution is optimized through a vibration external field capable of being precisely regulated and controlled. High-frequency small-amplitude vibration breaks particle aggregation so as to improve the filling uniformity, and low-frequency large-amplitude vibration guides tungsten copper two phases to form a preset gradient. The preparation device is used for completing powder homogenization and gradient regulation and control, and the tungsten-copper gradient composite material is prepared in cooperation with follow-up spark plasma sintering. According to the method, the vibration external field is only applied in the tungsten-copper particle mold filling stage, the process complexity does not need to be increased, the microstructure uniformity of the tungsten-copper composite material can be remarkably improved, and the gradient structure transition continuity is enhanced. The prepared composite material has the characteristics of high temperature resistance and low expansion of tungsten and high heat conductivity and high electric conductivity of copper, and can be widely applied to the high-end manufacturing fields of electronic power, aerospace, nuclear industry and the like.

This invention provides a negative electrode sheet and its preparation method, a battery, a battery pack, and an electrical device. The negative electrode sheet includes a negative electrode active layer, and the zeta potential of the negative electrode active layer is less than or equal to -53 mV. The negative electrode sheet provided by this invention, by limiting the zeta potential of the negative electrode active layer to less than or equal to -53 mV, can enhance the electrostatic repulsion between particles, prevent particle aggregation, improve the dispersion uniformity and stability of the negative electrode active material in the negative electrode sheet, avoid the appearance of black spots or dark streaks on the negative electrode sheet, and reduce the risk of localized lithium plating during battery charging.

The invention provides a temperature-controllable disperse dye reaction kettle, and relates to the technical field of reaction kettles, the temperature-controllable disperse dye reaction kettle comprises an outer kettle shell, the outer kettle shell is made of a high-strength material, can stably support internal components, isolates interference of an external environment on reaction in the kettle, and plays a core role in overall supporting and protection; the outer kettle shell is internally provided with an inner kettle, the inner kettle is made of a corrosion-resistant material with adaptive heat-conducting property and can be in direct contact with a disperse dye reaction system, the middle-layer heat exchange pipes are uniformly distributed along the inner wall of the inner kettle in the circumferential direction, so that the local temperature deviation in the kettle can be accurately compensated, and the temperature gradient and the micro-level of the edge and the center are avoided; the heat conduction oil is introduced into the hollow channels of the hollow stirring shaft and the paddles, and is matched with the heat dissipation holes in the surfaces of the paddles, so that a heat exchange function is permeated to a material core area, the problem of disperse dye colored light deviation caused by uneven temperature is greatly reduced, meanwhile, dye particle aggregation is effectively inhibited, and the stability and consistency of dye products are remarkably improved.

The application relates to a device and a method for realizing particle aggregation in a droplet, which comprises: a microfluid channel for providing a channel for droplet flow; a first bulk acoustic resonator close to the microfluid channel, the working range of the first bulk acoustic resonator including the space in the microfluid channel; the overall shape of the first bulk acoustic resonator is arranged to be narrowed from the front end to the tail end, and the tail end is an outwardly convex arc-shaped end portion, the arc-shaped end portion being used for making particles in the droplet be aggregated at a first position in the droplet during the process that the droplet flows through the first bulk acoustic resonator; and the tail end is located on the downstream side in the microfluid channel relative to the front end. The scheme of the application can realize that particles in the droplet are aggregated at a first position in the droplet, so as to facilitate observation or the interaction of different particles in the droplet after aggregation.

The invention belongs to the technical field of capacitors, and relates to a graded NiCo-S / Ni (HCO3) 2 supercapacitor electrode material and a preparation method thereof. The method comprises the following steps: firstly, preparing a precursor by a hydrothermal method; the preparation method comprises the following steps: weighing a nickel salt, a cobalt salt and a precipitator, dissolving in water at room temperature, carrying out hydrothermal reaction in a high-temperature reaction kettle, and then washing and drying a product to obtain a nickel-cobalt precursor; then weighing the precursor and sublimed sulfur according to a ratio, putting at two ends of a magnetic boat, and calcining and vulcanizing in a nitrogen furnace to obtain a nickel-cobalt-sulfur solid solution; and finally, weighing the nickel-cobalt-sulfur solid solution, nickel salt and urea, dissolving in a mixed solution of ethylene glycol and deionized water, and carrying out hydrothermal reaction to obtain the supercapacitor composite electrode material. By designing a unique layered composite structure, not only is an unobstructed electron / ion conduction path promoted, but also particle aggregation is effectively inhibited, the contact area between the specific surface of the material and an electrolyte is increased, and active sites are increased, so that a large electrochemical activity interface is generated.

The invention relates to the technical field of deep-sea mineral resource exploitation, and discloses a deep-sea mining pipeline particle conveying device and method based on rotational flow hydraulic lifting, and the device comprises a feeding pump, a pressure regulating valve, a conveying pipeline, a flow deflector, a supporting hub, a flow velocity sensor, a particle distribution sensor, a pressure sensor, a control terminal and a data acquisition system; the flow deflector is installed on the conveying pipeline through the supporting hub, the conveying pipeline is provided with a feeding port and a discharging port, the flow velocity sensor and the particle distribution sensor are both installed on the feeding port, the pressure sensors are evenly arranged in the axial direction of the conveying pipeline, the feeding pump is connected with the feeding port through the feeding pipe, and the pressure adjusting valve is installed on the feeding pipe. The flow velocity sensor, the particle distribution sensor and the pressure sensor are all connected with the data acquisition system, and the control terminal is respectively connected with the feeding pump and the data acquisition system. The inclination angles of the flow deflectors are simulated and optimized through fluid dynamics, particle aggregation in the conveying pipeline is reduced, and the defect of high energy consumption or low conveying capacity is overcome.

The invention discloses a preparation method of salicylhydroxamic acid, and relates to the technical field of flotation reagents and preparation thereof, in particular to the preparation method of salicylhydroxamic acid, which comprises the following steps: in the presence of an organic solvent and water, adding a phase transfer catalyst, alkali and a hydroxylamine hydrochloride aqueous solution into a reaction tank, uniformly stirring, adding methyl salicylate, and reacting for 2-4 hours at the temperature of 50-60 DEG C; after the reaction is finished, concentrated sulfuric acid is added to obtain salicylhydroxamic acid, through the arrangement of the reaction tank, a stirring rod, an extrusion bag and a slope ring plate, the stirring rod can be driven by a driving column to rotate, and the downward moving-resetting circulation of the stirring rod is achieved through the cooperation of an adjusting rod, a top block and the slope ring plate; the extrusion bag is driven to press and grind sodium hydroxide particles gathered on the inner bottom surface of the reaction tank, particle aggregation is broken, the particles are refined, the sodium hydroxide dissolution rate is increased, local high temperature is prevented from damaging key components such as hydroxylamine and methyl salicylate, generation of non-target substances is reduced, and the yield and purity of salicylhydroxamic acid are improved.

The invention discloses a preparation method of an arachidonic acid lipid nano drug delivery system, and relates to the technical field of biology, the lipid nano drug delivery system comprises the following components: (1) ionizable lipid; (2) arachidonic acid; (3) a conjugated lipid that inhibits particle aggregation of a non-cationic lipid or an ionizable lipid; (4) non-cationic lipids or non-ionizable lipids other than (3); (5) metal ions; (6) a nucleic acid drug; the lipid nano drug delivery system is formed by mixing and self-assembling at least the components (1) to (6). According to the novel preparation method of the lipid nano drug delivery system, cancer cells are specifically killed through lipid replacement and simultaneous use of nuclear nucleic acid drugs and metal ions, the treatment accuracy is improved, and the stability and the lysosome escape rate can be increased.

A coated nanocluster (10) comprises: a core (20) including an aggregate of magnesium oxide particles; and a shell (30) covering the core (20). The shell (30) has a coating layer (31) containing at least one of a nitrate and a nitrite, and carbonate particles (32) dispersed in the coating layer (31). At least one of the nitrate and the nitrite contains an alkali metal ion. The carbonate particles (32) contain at least one selected from a calcium ion, a strontium ion, and a barium ion. The molar ratio of the carbonate particles (32) constituting the shell (30) to the magnesium oxide particles constituting the core (20) is more than 0.005 and 0.015 or less.

The invention discloses a particle patterning control device and method based on a multi-mode sound field in a capillary tube. Comprising the steps that particle suspension liquid is injected into a capillary tube, a piezoelectric transducer is arranged on the outer side of the capillary tube, and the piezoelectric transducer is acoustically coupled with the outer surface of the capillary tube; applying an electric signal to the piezoelectric transducer, using the piezoelectric transducer to excite the two-dimensional acoustic resonance mode of the capillary tube, so that a corresponding bulk acoustic wave field is generated in the capillary tube, and the particles in the capillary tube are distributed according to the sound field gradient of the bulk acoustic wave field to form a particle pattern; and manipulating the particle pattern by modulating the excitation frequency or the structure of the capillary. According to the device and the method disclosed by the invention, various complex and stable particle aggregation patterns including circles, ellipses, other high-order modes and the like can be formed in the capillary tube.

The invention discloses a method for stably fixing sulfides in water for a long time. The method comprises the following operation steps: step 1, preparing a composite reagent; 2, fixing the water sample; 2, fixing the water sample; step 4, automatic detection; step 5, quality control; the invention has the following beneficial effects: through steric hindrance effect and electrostatic repulsion effect of sodium carboxymethyl cellulose, zinc sulfide is uniformly dispersed in the form of 50-200nm nanoscale particles, particle aggregation and sedimentation are effectively inhibited, long-acting preservation of more than or equal to 7 days is realized, pH value adjustment or addition of other chemical reagents is not needed during preservation, and the method is simple and convenient to operate. A dynamic equilibrium system is established through coordination competition of disodium ethylene diamine tetraacetate and zinc ions, and when the concentration of sulfide in a water sample changes in a range of 0.1 mg / L-50 mg / L, the release rate of the zinc ions can be adaptively adjusted, so that complete generation of zinc sulfide precipitates is ensured, and a wider concentration detection range is covered.

The invention relates to a fluidized bed reactor for producing hydrogen and carbon nanotubes through catalytic cracking of methane and an operation method, the fluidized bed reactor comprises a reactor body, the reactor body comprises a tube barrel, the bottom end of the tube barrel is provided with a reactor feed port, and the upper part of the side wall of the tube barrel is provided with a reactor discharge port; a gas distribution plate is arranged in the pipe barrel, a stirring paddle structure is arranged above the gas distribution plate, the stirring paddle structure comprises long-diameter paddles and short-diameter paddles, the long-diameter paddles are used for scraping and cleaning materials adhered to the inner wall of the pipe barrel, and the short-diameter paddles are used for crushing and dispersing the materials scraped from the inner wall and caked materials generated in the pipe barrel; an electric heating furnace is arranged on the outer side of the pipe barrel and provided with a plurality of independent temperature control areas so that the interior of the pipe barrel can be evenly heated. The invention aims to solve the problems of poor fluidization state, easiness in particle aggregation and adhesion, non-uniform heating in a fluidized bed reactor and the like in the process of producing carbon nanotubes by the existing fluidized bed to a certain extent.

To provide a laminate that can enhance the luminescence intensity of light-emitting elements in biological tissue when observing biological tissue with a thickness of several micrometers. [Solution] A laminate used for observing biological tissue, comprising a substrate, a metal-based particle aggregate layer formed on the substrate, and a protective layer formed on the metal-based particle aggregate layer, wherein the metal-based particle aggregate layer is a layer in which a plurality of metal-based particles are arranged spaced apart from each other. The average particle size of the plurality of metal-based particles is 200 to 1600 nm, the average height is 55 to 500 nm, and the ratio of average particle size to average height may be 1 to 8. The average distance between adjacent metal-based particles is 1 to 1000 nm, and the standard deviation of the average distance may be 40 nm or less.

The utility model relates to the technical field of calendering forming machine, specifically is a kind of sealing ring calendering forming machine of rubber material, including machine body, still include: press roll transmission mechanism, press roll transmission mechanism includes two first roller and second roller for being used to extrude rubber material and being rotationally arranged in machine body inside, first roller and second roller are driven by gear mechanism cooperation, first roller is synchronous reverse rotation by gear mechanism when driving second roller rotates;Dust absorption structure, dust absorption structure includes the multiple dust suction nozzles of being arranged in the above of first roller in machine body interior, dust suction nozzle is used to absorb the dust and volatile material released in the rubber material calendering process, the utility model can release the micron level dust particles of large amount of dry rubber material under roller extrusion in calendering process in time absorption, and after purification filtration, it is discharged to outside again, avoid the risk of combustion and explosion of particle aggregation existence, simultaneously avoid the problem of harm worker respiratory system health.

The invention provides a method for strengthening migration and arrangement of metal type nano particles in an aquifer medium. Comprising the following steps: constructing a mesoporous silica coating layer on the surface of a metal type nano particle, then dispersing the metal type nano particle in water, and performing dispersion treatment to obtain a particle suspension; and injecting the particle turbid liquid into the aquifer medium to be treated, so that the nano particles are migrated and dispersed into pore channels of the aquifer medium. The metal nanoparticles are coated with the mesoporous silica, and the coating layer is used as a physical barrier, so that particle aggregation is effectively inhibited, and long-time stable dispersion of the metal nanoparticles in a system is ensured; meanwhile, contact with porous media is reduced, and the migration performance is remarkably improved. In addition, the mesoporous structure on the coating layer can expose active sites of the inner core metal type nanoparticles, so that the material is endowed with reaction capacity. According to the method, the catalytic function is reserved while long-distance migration of the metal type nanoparticles is achieved, and the mesoporous silica is environmentally friendly and free of secondary pollution risks.

The invention relates to lithium-based modified composite clay and a preparation method thereof, and belongs to the technical field of clay. The preparation method comprises the following steps: S1, adding clay into a lithium salt solution for stirring reaction, and filtering, washing and drying to obtain lithium-based pre-modified clay; s2, carrying out ultrasonic dispersion on a silane coupling agent, a water-soluble organic polymer and nanoparticles in water to obtain a composite modifier solution; and S3, adding the lithium-based pre-modified clay into the composite modifier solution, carrying out a heating reaction under an acidic condition, and carrying out spray drying to obtain the lithium-based modified composite clay. Firstly, the interlayer spacing of the clay is expanded through the ion exchange effect of lithium-based pre-modification, and a space is provided for deep penetration of the composite modifier; then, a silane coupling agent, a water-soluble organic polymer and nanoparticles are used for composite synergistic modification, so that the adaptability of the clay to environments such as high temperature and electrolyte is further enhanced while a stable three-dimensional network is constructed to hinder particle aggregation.

The invention discloses a prepreg tape interlayer modification and enhancement method for automatic fiber laying, and belongs to the technical field of automatic fiber laying. The prepreg tape interlayer modification and enhancement method comprises the steps of online thermal softening, plasma thermal excitation nanometer material dispersion, hot air flow auxiliary deposition and air cooling solidification. Uniform and stable deposition of uniformly dispersed nano materials on the surface of the prepreg tape is realized, and a'physical interlocking 'modified enhanced interface is constructed, so that the interlayer bonding strength of the prepreg tape is improved. The problems that in the background technology, conventional nano modification is prone to particle aggregation, uneven in dispersion and difficult to embed, and an existing modification technology is incompatible with the online high-speed production process of automatic fiber laying are solved.

The invention discloses a high-transmittance and high-fog electronic coating and a preparation method thereof, and belongs to the technical field of material surface treatment and paint. On the basis of an in-situ nucleation technology, a resin matrix and acrylic acid are mixed and stirred, tetraethyl orthosilicate TEOS and a photoinitiator are added and stirred to obtain a coating prepolymer, and the surface of glass is coated with the coating prepolymer for UV curing. According to the method, tetraethyl orthosilicate is slowly hydrolyzed and condensed by utilizing the induction of trace moisture in ambient air and the catalytic effect of an acrylic acid functional group, silicon dioxide microspheres with uniform particle size and good dispersity are generated in situ, particle aggregation is effectively inhibited, and finally, the high-transmittance and high-fog electronic coating is obtained. According to the coating, by regulating and controlling the size and distribution of the silicon dioxide microspheres, high haze is achieved while high light transmittance is kept, and the coating can be widely applied to anti-glare display surfaces of consumer electronics such as smart phones and tablet personal computers and has good industrialization prospects.

The utility model relates to the technical field of chemical equipment, and discloses potassium chloride feeding pipe inlet equipment which comprises a supporting plate, a potassium chloride crushing output part and a vibration anti-blocking part, and the bottom of the supporting plate is communicated with a discharging hopper. According to the utility model, the stirring motor drives the rotating rod as well as the crushing blade I and the crushing blade II on the rotating rod to rotate at a high speed, so that potassium chloride materials fed into the feeding hopper can be effectively crushed, large potassium chloride crystals or blocks which possibly exist can be crushed into smaller particles through the crushing effect, and the potassium chloride crystals or blocks can be effectively crushed in the discharging process. Even if some small particles are gathered or the discharging pipe is locally blocked due to other reasons, along with rotation of the rotating rod, the dredging spiral blade can gradually push the blocking objects out like a spiral propeller, so that the discharging pipe is always kept smooth, stubborn blocking caused by material accumulation is prevented, and the stability and reliability of material output are further guaranteed.

The application discloses a carbon-coated cerium oxide material with excellent electrocatalytic oxygen reduction performance, and relates to the technical fields of materials, chemistry and electrocatalysis. The preparation method comprises the following steps: S100, preparation of a cerium oxide precursor; and S200, preparation of the carbon-coated cerium oxide. The amorphous carbon coating technology is used to introduce a carbon layer with high electron density, so that the cerium oxide core is effectively protected from corrosion or decomposition in the reaction process, the stability and service life of the catalyst are significantly improved, the mechanical strength of the catalyst is improved due to the existence of the carbon layer, the particle aggregation and abrasion between particles are reduced, the durable time of the catalyst is further prolonged, the interaction between the amorphous carbon coating and the cerium oxide promotes the generation of more oxygen vacancies and defects, the vacancies and defects serve as active sites, the oxygen reduction reaction is accelerated, and the selectivity to hydrogen peroxide generation is improved.