12 results about "Spherical granule" patented technology

The utility model relates to the technical field of pebble bed type high-temperature gas cooled reactors, in particular to a spherical particle sampling device, which comprises particle feeding equipment, a sampling device and a sampling device, the stock bin is connected with the particle feeding equipment and is used for storing to-be-sampled spherical particles; the feeding mechanism communicates with the stock bin and is used for changing the feeding speed of the stock bin by adjusting the vibration frequency; the material distributing mechanism is connected with the feeding mechanism and is used for uniformly dividing and moving the to-be-sampled spherical particles; the sampling mechanism comprises a material distributing cover plate device and a material collecting and sampling device, the material distributing cover plate device is connected with the material distributing mechanism, the material distributing cover plate device is connected with the material collecting and sampling device, and the material collecting and sampling device is used for collecting the uniformly divided to-be-sampled spherical particles by ascending or descending the material distributing cover plate device. Therefore, the problem that existing equipment cannot meet the requirement for rapid sampling of large-flux spherical particles and the like is solved.

The application provides an adsorption-induced transmission type hydraulic lime suspension and a preparation method thereof, and belongs to the technical field of building materials. The application uses the knowledge of suspension particle dynamics, selects spherical micro-nano pozzolanic materials as the hydraulic component to promote the kinetic stability of the hydraulic lime suspension and the permeability of the hydraulic lime suspension in the earthen site. However, the specific surface area of the regular spherical particles is relatively small, the adsorption in the earthen site is small, and the regular spherical particles are prone to return migration to the surface of the earthen site to form whitening as the solvent evaporates. The application uses the alkali activation and hydrothermal synthesis method to load the silicon / aluminum gel and zeolite with super-large specific surface area on the surface of the pozzolanic material, plays an adsorption-induced transmission role, realizes the deep penetration of the hydraulic lime suspension in the earthen site, and avoids the return migration phenomenon.

Provided is a method for manufacturing a spherical particle material in which the particle size distribution is easily controlled. This method has: a granulation step of granulating a raw particle material formed of an inorganic material having a D50 of not larger than 5 μm to form a granulated body; and a spherizing step of heating and melting the granulated body to form the spherical particle material having a D50 larger than a D50 of the raw particle material. A melting method is used as a basic method for manufacturing the spherical particle material having a necessary particle size distribution. The granulated body is used to manufacture the spherical particle material having the necessary particle size distribution by the melting method.

To provide biodegradable spherical particles that maintain their initial satisfactory tactile properties and a method for producing the biodegradable spherical particles.SOLUTION: Biodegradable spherical particles are mainly composed of a biodegradable polymer. The biodegradable spherical particles have a coefficient of variation CV in particle diameter of 40% or less and a five-day biodegradability, as determined by a biodegradability test in accordance with OECD TG301F, of 40% or less. A cosmetic composition contains the biodegradable spherical particles. A method for producing the biodegradable spherical particles comprises mixing the biodegradable polymer, a plasticizer, and a water-soluble polymer to obtain a mixture, melt-kneading the mixture at a temperature of 200-280°C to obtain a kneaded mixture, and removing the water-soluble polymer from the kneaded mixture.SELECTED DRAWING: Figure 1

The invention discloses a curve chute material flow accurate control method based on DEM modeling, and the method comprises the following steps: S1, carrying out high-precision DEM modeling, building a non-spherical particle model based on actual material characteristics, introducing a power model, and accurately simulating a gas-solid coupling effect; s2, flow state prediction and optimization: analyzing speed distribution, segregation phenomenon and accumulation risk of materials in the curve chute under different working conditions through DEM simulation, establishing flow state evaluation indexes, and optimizing chute structure parameters based on simulation results; and S3, the intelligent control module controls the execution mechanism to output actions, sensors are arranged at key positions of the chute, real-time data are input into the DEM model for rapid simulation, short-term flowing behaviors are predicted, and the material flow is dynamically adjusted through the execution mechanism. According to the method, through non-spherical particle modeling, electric power model introduction and contact parameter calibration, the reduction degree of DEM simulation on actual material flow behaviors is improved, and the method is suitable for complex materials such as high-humidity materials and superfine powder materials.

The invention discloses a spherical particle close packing qualitative characterization comparison method and a related system. The method comprises the following steps: establishing a packing structure and intersection rate data set based on a spherical particle modeling method; based on the obtained stacking structure and intersection rate data set, using a Gaussian regression process to construct a grading scheme-stacking intersection rate machine learning model; the scheme-accumulation intersection rate machine learning model is used for carrying out an optimal particle size distribution and volume ratio scheme on a given particle size range, intersection rate prediction is converted from physical simulation consuming several days to machine learning model calculation completed in a second level, the calculation resource threshold is greatly reduced, optimization work can be completed on a common personal computer, and the calculation efficiency is improved. According to the method, active global optimization capability is provided, optimization can be automatically carried out in a wide parameter space, and a passive simulation-verification tool is converted into an active intelligent design tool.

A device suitable for forming spherical particle clusters from fine powder is a device through which spherical particle clusters having a controlled particle size and a controlled hardness can be prepared from the fine powder by using a rolling granulation principle without adding any solution or solid binder. In particular, the device includes the following components: a) a preforming device for preforming particle clusters formed from fine powder, so that the particle clusters have a certain strength and shape while conveying the particle clusters to a next step at a certain speed; b) a spheroidizing device for further strengthening the particle clusters formed by a) the preforming device, so that the particle clusters have a higher sphericity and hardness; and c) a grading device for sieving the particle clusters spheroidized by b) the spheroidizing device to obtain particle clusters of different particle size ranges.

The invention relates to the technical field of deposition dynamic numerical simulation and marine environment evaluation, and discloses a turbidity current environment evaluation system coupling deposition dynamic simulation and micro-plastic distribution prediction, which comprises a particulate matter mapping module, a micro attitude evolution module, a dynamic flocculation judgment module and a rheological deposition feedback module. The particulate matter property mapping module constructs a micro-plastic form tensor and a critical anti-shearing threshold value; the microcosmic attitude evolution module calculates the rotation response of the particles in the flow field and corrects the collision probability; the dynamic flocculation judgment module judges the physical state of particles in real time and updates the effective density based on a shearing flocculation competition mechanism; the rheological deposition feedback module calculates the effective viscosity of the fluid containing the particle reaction, feeds back the effective viscosity to the flow field and outputs the deposition flux. By constructing a bidirectional coupling closed loop of the particle morphology, the flocculation state and the fluid rheological property, the problems of motion distortion and density change simulation of non-spherical particles are solved, and the accuracy of turbidity current microplastic distribution prediction is improved.

The present application relates to the technical field of quality detection, and particularly relates to an aerosolized powder sphericity multidimensional online analysis system and method thereof, which comprises a dynamic double-mode imaging module, a transverse wind field auxiliary detection unit and a multidimensional feature fusion analysis module, the transverse wind field auxiliary detection unit is used for applying controllable transverse wind force through airflow nozzles orthogonal to the falling direction of the powder, and combining with a laser displacement sensor to measure the deflection trajectory of aerosolized powder spherical particles; and the present application further comprises an online calibration module, which is used for spraying standardized spherical particles to the powder flow at a preset period; compared with the traditional density detection which relies on destructive sampling and offline measurement, the present application has low efficiency and cannot cover all the particles on the production line; through the orthogonal wind field trajectory inversion technology, the present application synchronously outputs the density value and internal defect mark through non-contact dynamic measurement, realizes 100% nondestructive online full detection on the production line, and breaks through the sampling limitation and time bottleneck of the traditional means.

The application discloses a kind of complex stratum dual-mode shield construction rock debris particle size distribution evaluation method and system, comprising: obtaining rock debris image and pretreatment denoising, obtain the first image;Utilize deep learning algorithm to identify rock debris edge, separate overlapping rock debris, obtain the second image;Through morphological parameter analysis rock debris shape, carry out three-dimensional reconstruction correction to non-spherical particle, obtain the third image;In combination with laser particle size analysis data, data fusion is carried out to the third image, and preliminary particle size distribution is obtained;For fine particle adhesion phenomenon, adopt detection algorithm to correct particle size distribution;According to the change of crushing mechanism when shield mode switches, dynamically update particle size distribution;Through mutation detection algorithm analysis non-linear mutation in complex stratum, carry out data smoothing processing;Finally, error accumulation model is used to analyze error, if exceed threshold value, then reprocess, until error meets requirements.The application significantly improves the accuracy and reliability of rock debris particle size distribution evaluation.

The invention discloses a lunar soil slope stability analysis numerical simulation method and system considering particle shapes and intergranular Van der Waals force, and relates to the field of lunar mining numerical simulation. Reading a particle image of the lunar soil, and extracting particle shape characteristics of the real lunar soil under different particle sizes; converting the grain shape characteristics of the real lunar soil into a rolling resistance coefficient; constructing a lunar soil numerical basic model according to the particle size distribution of the real lunar soil, and constructing a lunar soil slope numerical model based on the rolling resistance coefficient and the lunar soil numerical basic model; on the basis of the constructed lunar soil slope numerical model, micromechanics data and macroscopic phenomenon data in the slope instability process are obtained, and evaluation of the stability of the lunar soil slope is achieved. According to the method, the spherical particles are adopted as the minimum particle unit of the bulk solid, the influence of different shapes in the lunar soil slope is simulated through different rolling resistances, the problem of low calculation speed is solved while the shape effect of the lunar soil particles is simulated, and the calculation efficiency of the model is improved.