69 results about "Particle radius" patented technology

The invention is a method for ball mill to recuperate balls precisely, which belongs to ore pulverizing, grinding technology field. The method includes: measures the mechanical parameter of ore; sifts and analyzes the mill ore and back sands, calculates the ore particle components and groups them; calculates the particle radius value according to ball radius haft theory formula; determines the ball ratio of the mill according to the ore particle and the needed ball radius; paints the ball particle accumulating curve, thus acquires the radius and recuperating ratio precisely. The proportion is reasonable, the method is simple, the productivity is upgraded greatly, and the quality is improved.

Conductive particles each includes a polymer base particle and a conductive layer coating the polymer base particle. Let the compressive elastic deformation characteristic KX of one conductive particle when the displacement of particle diameter of the conductive particles is X % be defined by the following formula: KX=(3 / √2)·(SX−3 / 2)·(R−1 / 2)·FX. FX is the load (N) necessary for X % displacement of the conductive particles. SX is the compressive deformation amount (mm) upon X % displacement of the conductive particles. R is the particle radius (mm) of the conductive particles. The compressive elastic deformation characteristic K50 when the displacement of particle diameter of the conductive particles is 50% is 100 to 50000 N / mm2 at 20° C., and the recovery factor of particle diameter of the conductive particles when the displacement of particle diameter of the conductive particles is 50% is not less than 30% at 20° C.

The invention discloses a cathode material LiMn1-xFexPO4 for a lithium ion cell and a preparation method of the cathode material LiMn1-xFexPO4. The preparation method comprises the following steps: manganese source compounds and iron source compounds are adopted as the raw materials to prepare manganese-rich solution and a manganese-poor solution respectively, a FeMnPO4 precursor with a gradient structure is synthesized through a coprecipitation method by controlling the sample adding speed, and then lithium doping and high-temperature calcination are performed to prepare the LiMn1-xFexPO4 with a gradient structure, that is the manganese content of the LiMn1-xFexPO4 is gradually reduced while the iron content of the LiMn1-xFexPO4 is gradually increased from inside to outside along the particle radius of the LiMn1-xFexPO4. The anode material LiMn1-xFexPO4 with the gradient structure has the characteristics of high energy density, good cycle performance and excellent rate capability and is applied to the field of application of power lithium-ion batteries.

[Object] Provided is a means capable of suppressing a decrease in capacity and improving output characteristics of a non-aqueous electrolyte secondary battery when the battery is used for a long period of time.[Solving Means] Disclosed is a positive electrode active substance for a non-aqueous electrolyte secondary battery, in which the true density / tap density of secondary particles of a lithium composite oxide containing nickel as the main component is within the range of 1.6 to 2.3, and in the secondary particles, the average porosity on the center side of the half (R / 2 [μm]) of the particle radius (R) of D50 of the secondary particles is larger than the average porosity on the surface side.

The invention consists of two parts: the transmitting end and the receiving end. The transmitting end is composed of the beam limiting unit, the spatial filter, the transmission-reflector and semiconductor laser arranged in sequence encapsulated in the column shape barrel. The reference light receiver is fixed on the side wall of the column shaped barrel. The receiving end is composed of the convex lens, the metal frame, the diaphragm, the two-dimension adjusting unit, the photoelectric receiver and the packaging body. The preliminary signal multiplication circuit is encapsulated inside the packaging body. The invention can measure multiple parameters of the granules with less limitation for the object to be measured and little disturbing to the flow field.

The invention relates to a sedimentary rock reconstruction method and a sedimentary rock reconstruction system. The method comprises the steps that: rock particles with a fixed number are generated in a container with a fixed size according to rock particle radius distribution; the rock particles are subjected to sedimentation falling treatment under the effect of force, until the rock particles reach dynamic balance, wherein a condition of the dynamic balance is that a ratio of an average value of resultant force applied on the rock particles during the sedimentation falling process to an average contact force of contact points among the rock particles or a ratio of a maximal resultant force to a maximal contact force satisfies a priori condition; the dynamically balanced rock particles are subjected to a compaction treatment under the effect of formation pressure, until the strain of the integral rock particles on a vertical direction reaches certain threshold; and the rock particles obtained after the compaction treatment is cemented together, such that a rock is formed.

The object of the present invention is to provide a catalyst having an excellent catalyst activity.In the present invention, a catalyst is configured to include a catalyst support and a catalyst metal supported on the catalyst support, wherein a mode radius of pore distribution of pores of the catalyst is 1 nm or more and less than 5 nm, wherein the mode radius is equal to or less than an average particle radius of the catalyst metal, and wherein a pore volume of the pores is 0.4 cc / g support or more.

The invention provides a particle diameter detection method based on optical trapping. The method comprises the following steps of analyzing the power spectrum of displacement of particles trapped by an optical trap, wherein a signal comprises Lorentz distribution corresponding to limited Brownian movement and peak of forced movement; according to the area of the peak relative to the Lorentz distribution and the height of the peak, inverting the voltage proportion coefficient of a micro particle in the optical trap when the micro particle is detected by a detector, and according to the micro particle diameter with the standard size, measuring the ratio of coefficient of viscosity to temperature; acquiring the temperature in the optical trap according to the relationship between the coefficient of viscosity and the temperature; collecting a forced movement signal of a to-be-detected micro particle in the optical trap, and then calibrating the voltage proportion coefficient of the detector to the micro particle by utilizing the power spectrum; and acquiring the diffusion coefficient by the power spectrum of thermal noise, and determining the particle radius according to the temperature, the coefficient of viscosity as well as Stokes-Einstein relation of standard micro particle measurement. The method can be used for detecting the particle diameter of each particle in an experiment environment, that is, the method can be used for detecting the particle diameter with high precision in situ.

The invention provides a nanometer core shell structure thermite and a preparation method thereof; the method uses nanometer aluminum powder as the Al source, and prepares the nanometer core shell structure thermite by a special reduction-oxidation method way. The general chemical formula of the thermite is MOX / 2@Al, wherein M is one of Fe, Co, Ni, Cu, W, Pb, Bi, and Mo; X is the valence state of M, X = 2-4; in the core shell structure, the particle size of the Al core is 10-500nm, the ratio between the MOx / 2 packaging layer thickness and the Al particle radius is 0.05-0.5; the specific surface area of the thermite MOX / 2@Al is 200-280m2 / g, the calorific value is 3126-4236J / g, the ignition temperature is 200-532 degrees centigrade. The provided preparation method has the advantages of simple and convenient to be implemented, economical and environment-friendly; the prepared nanometer core shell structure thermite has the performance characteristics of high in unit gross calorific value, good in dispersibility, low in ignition temperature, high in activity, and the like.

The invention discloses a multi-field polarization lidar detection system and a method for detecting an ice cloud, wherein the multi-field polarization lidar detection system comprises a transmittingmodule, a receiving module and a main control module. The transmitting module comprises a laser, a beam expander and a first reflector. The receiving module comprises a telescope, a second reflector,an electric aperture, a convex lens, an optical filter, a polarizer, an attenuator, a polarization beam splitter, a first to second photodetectors and a signal acquisition module; the laser, the electric aperture and the signal acquisition module are respectively connected with the main control module; and the first photodetector and the second photodetector are respectively connected with the signal acquisition module. The detection method utilizes a laser to generate laser radiation of a wavelength of 532 nm; parallel polarized light and vertical polarized light are respectively detected through two optical receiving passages of a parallel detection passage and a vertical detection passage; a depolarization ratio is calculated through the two detection passages; and the depolarization ratio and a T-Matrix method are used for calculating the content of ice water and effective particle radius of cloud particles.

The invention relates to an emulsion polymer comprising at least one (meth)acrylate segment that comprises between 1 and 30 % by weight of units derived from (meth)acrylates with at least one double bond and between 8 and 40 carbon atoms in the alkyl group, between 1 and 10 % by weight of units derived from monomers containing acid groups and between 50 and 98.9 % by weight of units derived from (meth)acrylates with between 1 and 6 carbon atoms in the alkyl group, each weight percentage relating to the weight of the (meth)acrylate segment. According to the invention, the emulsion polymer has a particle radius of at least 50 nm.

The invention is a kind of new excluder pigment-tint compound iron and titanium powder which can enhance the rust preventing performance of paint. The compound iron and titanium powder uses manmade phosphate of 200-2000 items as the carrier, adds in one or more of nano silicon oxide, titanium oxide, yttrium oxide, ferric oxide, and assistant agent and fillers for paint, the particle radius of the five nano materials are between 10-100. the invention can enhance the rust prevention performance, the performance and price ratio is high, the performance and the economical index exceeds the background technique greatly.

The invention discloses a constructing method for a kind of water-tight channel seam: the invention preforms a seam with width of 3.0cm-8.0cm when lays concrete preformed block or pouring concrete in field, the depth of the sea is not less than 5.0cm, the invention lays a layer of sands (particle radius 0.1-1.0 cm) on the bottom of the seam, then the concrete sand pulp is poured into the seam and flat with the concrete block with pulp pouring machine or manually, sprays M1500 water repellent compound on the surface of seam and in range of 3.0-5.0 at two sides of the seam.

A method is described which applies the combination of Electroacoustic and Complex Conductivity measurements to characterize particle electric surface properties, such as ζ-potential, and bulk properties, such as the dielectric permittivity, in systems where conductivity data is required for applying an appropriate theoretical model for calculating output parameters from the measured data. In particular, this is important in low conducting systems for which the double layer thickness exceeds the particle radius or in the systems where particles have either high bulk dielectric permittivity or high conductivity.

The invention is nickel oxide nano electrochromism film and the manufacturing method, the method uses liquid-gelatum method to produce nickel colloidal sols, them the ITO glass piece is immersed into the liquid, and uses the film device to pull into film, the film can be get through drying, baking, quenching and cooling. The manufacturing method of colloidal sols uses inorganic nickel salt to dissolve in the compound organic solvent which uses waterless alcohol mainly, and they are back flowed every 78-82deg.C, then, adds in water and the organic acid to get the nickel colloidal sols. The invention is simple, the film is even, thick, the even particle radius is between 30-50mm, the light throughput varies in 7.9%-85%. The property of the product is stable.

The invention relates to the battery manganese water processing technology, with dark brown appearance, BET specific surface area being 315. 543 m2 / g, particle radius 20-40 , by screening active alumina granules with particle radius being 20-40 , cleaning with ion removal water for two to three times, and drying it for further usage, getting the above processed alumina granules for 6-10g, adding them to 50ml ion removal water for twisting, adding 0. 015-0. 020mol (CH3COO)2Mn.4H2O, twisting for 20min, then adding KMnO4 solution 100-250mL with density of 0. 045-0. 085mol / L, seeing the solution turned into dark brown and generated into MnO2, abandoning the suspended solution, leaving the particle compound absorbent ion till the pure solution coming ut, drying it to get the absorbent.

The invention relates to the technical field of cutting tools, in particular to a preparation process of self-lubricating ceramic material cutting tools, which is characterized in that the process steps are: (1) Nano-thulium zirconium ceramic powder prepared by hydrothermal precipitation method, its composition The content and mass percentage are: 7% to 38% of thulium oxide, 62% to 93% of zirconia, (2) after adding TiC composite, ball milling, (3) adding solid lubricant, the radius of the solid lubricant particle ceramic composite material The ratio is 0.225≤r / R≤0.419, (4) mixed after ball milling, (5) vacuum dried, (6) put into graphite mold, (7) prepared by hot pressing sintering process, and the sintering temperature is 1500°C-1700°C , holding time 40 minutes. Compared with the prior art, the present invention has a simple technological process, and the self-lubricating ceramic tool has the functions of anti-friction, anti-wear and lubrication, saves the cooling and lubrication system, reduces equipment investment, avoids environmental pollution caused by cutting fluid, and realizes clean production. reduce manufacturing cost.

The invention discloses an anion and cation doped carbon-coated lithium iron phosphate cathode material and a preparation method thereof. The anion and cation doped carbon-coated lithium iron phosphate cathode material is characterized by having the general formula: LiFe(1-x)VxPO(4-y)Fy / C, wherein 0<=x<=0.05, 0<=y<=0.05, 0<=x+y<=0.1. Trough researching carbon coating and doping of a lithium iron phosphate cathode material, the electronic conductivity of the lithium iron phosphate cathode material is increased, the particle radius of the lithium iron phosphate cathode material is reduced, and the stability of the lithium iron phosphate cathode material is improved.

[Object] Provided is a means capable of suppressing a decrease in capacity and improving output characteristics of a non-aqueous electrolyte secondary battery when the battery is used for a long period of time.[Solving Means] Disclosed is a positive electrode active substance for a non-aqueous electrolyte secondary battery, in which the true density / tap density of secondary particles of a lithium composite oxide containing nickel as the main component is within the range of 1.6 to 2.3, and in the secondary particles, the average porosity on the center side of the half (R / 2 [μm]) of the particle radius (R) of D50 of the secondary particles is larger than the average porosity on the surface side.

The invention discloses non-aqueous cyanide-free silver plating electroplating solution. The electroplating solution adopts an organic solvent instead of the water as a solvent. The concentration of every component in the electroplating solution is that a silver iron source is 1 to 200 grams per liter, a complxant is 1 to 800 grams per liter and an electroplating additive is 10 to 10000 milligrams per liter. Compared with the traditional technical formula of cyanide silver plating, the non-aqueous cyanide-free silver plating electroplating solution of the invention is very low in toxicity; compared with the cyanide-free silver plating water system plating solution, the solution of the invention has good stability and the silver particle cluster in the plating is smaller. Under the control conditions, the average particle radius is within 100 nanometers. The plating is fine and bright and has good binding force, which can be applied in the fields of decorative electroplating and functional electroplating and especially has better application in electronic chip micro channel electroplating and nano material preparation.

The invention discloses a construction method of a two-dimensional regular porous medium geometric model. The construction method comprises the steps of determining target parameters of the porous medium geometric model, estimating the number of particles of the target model, randomly generating a particle radius array, determining coordinates of a target circle center for the particles, judging porosity after the coordinates of the target circle center are determined each time, and outputting a model. In addition, the invention further discloses a device for constructing the two-dimensional regular porous medium geometric model. The device comprises a target parameter determination module, a particle quantity estimation module, a radius array generation module, a target circle center coordinate determination module and a porosity judgment output module. According to the method and the device, the porous medium model with different particle sizes, random position distribution and diversified irregular pore channel characteristics can be rapidly generated. For a model with small target porosity and large particle number, the target porous medium model can be generated more effectively by excluding the determined coordinates of the target circle center.

The invention relates to a preparation method of a rubidium doped polymer solid electrolyte membrane, which is characterized in that a rubidium compound and polymer solid electrolyte solution are uniformly mixed and applied to the surface of a polyolefin membrane by dip-coating. The rubidium ions in the polymer solid electrolyte membrane have a larger particle radius than lithium ions, and a large-aperture ion channel is formed in the polymer solid electrolyte membrane. Lithium ions can be quickly de-intercalated. The conductivity and cycle performance of the polymer solid electrolyte membraneare improved. In addition, the matrix polyolefin membrane can provide good mechanical strength for the polymer solid electrolyte membrane, and is more practical.

The invention relates to a method for machining a double-metal band saw blade. The method includes the steps that a high-speed steel particle is preset on each weld face arc of a band saw blade body, and the relation between the weld face arc radius R1 and the high-speed steel particle radius R2 is that R2<=R1<=R2+0.5. According to the method for machining the double-metal band saw blade, waste of high-speed steel material in the saw tooth forming process of traditional double metal is avoided, arc lines are adopted for weld faces in use, the length of weld seams is larger than that of a traditional double metal saw blade, and the weld face arcs and the high-speed steel particles are arranged in space positions, so that the saw blade body can generate a base support effect, saw tooth cutting force is transmitted to the saw blade body more easily, and the saw blade bears larger cutting force. The diameter of the weld face arcs is larger than that of the high-speed particles, and when compressive deformation is generated, the bonding of the weld faces is more reliable.

The invention discloses a novel rolling type sand sieving machine. The novel rolling type sand sieving machine comprises a rolling type sand sieving machine body, an external rolling sand filtering net and a coarse material outlet, wherein a fixing table is arranged on the rolling type sand sieving machine body; the external rolling sand filtering net is rotatably arranged between two support frames; a gear ring is arranged on the exterior of one end of the external rolling sand filtering net in a sleeving manner; the bottom of the gear ring is in transmission connection with a driving motor fixedly connected to the fixing table through a small gear; and the other end of the external rolling sand filtering net is located on the fixing table and is provided with the coarse material outlet convenient for discharging. The external rolling sand filtering net is arranged on the sand sieving machine; an internal rolling sand filtering net is rotatably arranged inside the external rolling sand filtering net in a sleeving manner and can be rotated by loosening a spiral fastening clamp; the radius of produced sand can be adjusted through the mutual rotation between the internal rolling sandfiltering net and the external rolling sand filtering net; and due to the structure, the novel rolling type sand sieving machine can achieve the purpose of sieving sand with different particle radiuses , and is simple in structure and has strong practicability.

A radiation-sensitive composition for the color filter contains (A) a pigment, (B) an alkali soluble resin, (C) a polyfunctional monomer, and (D) a radiation-sensitive radical generating agent. (A) The pigment contains 5 wt% or greater of a C.I. pigment yellow 219, and an average particle radius r (unit nm) of (A) the pigment is more than or equal to 50 and less than or equal to 300.

The invention discloses a method for constructing a variable-porosity porous medium. The method comprises the following steps: randomly distributing a plurality of spherical particles in an area; determining the target porosity of the porous medium target model, determining the increase length of the particle radius each time, keeping the coordinates of the sphere center of the particles fixed, keeping all the particles in the calendar area, and on the basis of the original particle radius, increasing the radius of each particle by the same length until the target porosity is reached, and outputting the porous medium target model. The method also includes sorting the plurality of target porosities from high to low, and constructing a next target model on the basis of the previous target model. The construction process of the method is controllable, the channel characteristics of the porous media with different porosities are associated, the construction process can be closer to the actual situation through specific parameter reflection, and the research on the porous media problem is facilitated.

The invention relates to a copper foil for the printed circuit, which forms a ternary alloy particle layer consisting of copper, cobalt and nickel on the first particle layer after the first particle layer is formed on the surface of the copper foil. The invention is characterized by coursing a certain area of the processing area until the average value of the height column diagram which can be detected by a laser microscope is aboeve 1500. The invention also provides the copper foil for the printing circuit. The average particle radius of the first particle is 0.25-0.45mum, and average particle radius of the secondary particle layer consisting of the copper, the cobalt and the nickel is smaller than the 0.35mum. The invention forms a secondary particle layer consisting of the cooper, the cobalt and the nickel after the first particle is formed, the average value of the height column diagram which can be detected by the laser microscope after coursing processing is set to be over 1500 so as to reduce the generation of the coming-off powder from the copper foul, enhance the stripping intensity and improve the high temperature resistance.

The invention discloses a quick calculation method of ground surface solar radiation flux and solves the problem of low ground surface solar radiation flux calculation efficiency. The quick calculation method includes following steps: utilizing an atmospheric radiation transmission model to simulate ground surface solar radiation flux corresponding to satellite data under different numerical values, and building a ground surface solar radiation flux database to acquire a ground surface solar radiation flux lookup table; downloading the satellite data which include solar zenith angle, cloud optical thickness, cloud effective particle radius, aerosol optical thickness, aerosol type and gray value; acquiring the ground surface solar radiation flux according to the lookup table. By the quick calculation method, a lot of repeated and redundant calculation work is avoided, and calculation efficiency and calculation accuracy are improved greatly.