10 results about "Particle material" patented technology

The application discloses a fine particle material dry separation device and a dry separation system. The fine particle material dry separation device comprises a rack, a separation bin, a separation bed, a driving device, a dust removal system and an air supply system. The separation bed comprises an upper bed body and a lower bed body located below the upper bed body. The upper bed body is provided with a first upper bed body end corresponding to the position of a feeding port and a second upper bed body end located opposite to the first upper bed body end. The position of a first discharge port corresponds to the second upper bed body end. The upper bed body is provided with a sieve hole. The aperture of the sieve hole increases in the direction extending from the first upper bed body end to the second upper bed body end. The lower bed body is provided with a first lower bed body end corresponding to the position of the first upper bed body end and a second lower bed body end located opposite to the first lower bed body end. The position of a third discharge port corresponds to the first lower bed body end. The position of a second discharge port corresponds to the second lower bed body end. The lower bed body is provided with an air inlet hole.

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.

The application provides a kind of nanoparticle thickness measurement method based on transmission electron microscopy high-angle annular dark-field image, belongs to the technical field of nanoparticle material.This method includes: the absolute brightness intensity value and thickness value data of standard nanoparticle with same composition and different particle size of the nanoparticle to be measured are collected to construct data set;The standard nanoparticle is regular shape nanoparticle;The relationship function of the absolute brightness intensity value and thickness value of the nanoparticle is established based on the data set;The absolute brightness intensity value of the nanoparticle to be measured is collected by transmission electron microscopy, and the thickness of the nanoparticle to be measured is obtained by the relationship function of the absolute brightness intensity value and thickness value of the nanoparticle.The method effectively avoids the interference of different crystal orientations on the brightness intensity in ordinary transmission mode imaging, and can obtain accurate nanoparticle thickness information.

The utility model discloses a kind of multi-section silica tailings crushing device, it is related to tailings recovery technical field.To solve the problem that the crushing mode of existing crushing device is single, the crushing of large-particle material in silica tailings is not sufficient, efficiency and effect are limited, it is difficult to guarantee product granularity uniform, and material after screening is prone to granularity crossover, affect subsequent granularity accurate control;Through the jaw crushing of first crushing mechanism and the conical crushing of second crushing mechanism form multi-section crushing process, make silica tailings sequentially through different crushing cavities and gradually refine crushing, can make full use of the advantage of each crushing mechanism, jaw crushing is suitable for processing bulky material, carries out preliminary crushing, conical crushing can carry out fine crushing to medium-particle material, to greatly improve crushing efficiency, more accurately control product granularity, make the granularity of final discharged silica tailings more uniform, satisfy the requirement of different industrial application to material granularity, improve the applicability and quality of product.

This invention relates to the field of industrial vision technology, specifically to a method and system for controlling the unloading of a semi-trailer transporting powdery materials. The method includes the following steps: acquiring grayscale image sequences to construct a visualized fluid feature dataset; calculating the peak angle drift rate and comparing it with a safety benchmark to generate a safety judgment record; combining the safety record with frequency domain features to obtain flow energy distribution data; outputting purging control data based on the degree of deviation of the center of gravity coefficient from the energy efficiency target; and calculating the conveying impedance sensitivity in conjunction with air intake disturbance to search for the efficiency limit point. In this invention, the fluid movement trend is quantified through angle drift rate calculation, a safety benchmark is established to identify flow continuity, the flow center of gravity is analyzed using a frequency domain energy spectrum, the purging valve is automatically adjusted according to the energy efficiency target range to eliminate proportional imbalance, and the limit point approximation search is performed in conjunction with impedance sensitivity analysis to achieve fully automatic closed-loop optimization control, thereby improving the stability of unloading operations and energy utilization efficiency.

This utility model provides a high negative pressure multi-point induced draft dust removal and ash extraction device, belonging to the technical field of extraction devices. It includes a silo pump and a filter chamber mounted on the pump. The pump has a feed inlet at its upper end and a discharge inlet at its lower end. A butterfly valve is installed on one side of the feed inlet, and a discharge device is installed at the lower end of the discharge inlet. A conveying pipe is installed at the lower end of the discharge device. This utility model utilizes an inclined block and a squeezing rod to achieve up-and-down vibration of the elastic cloth, causing dust adhering to the material particles to detach. This effectively cleans the dust from the material, improving the quality of subsequent particle materials. Simultaneously, a stirring shaft and stirring blades continuously stir the material between the baffle and the fixed frame. During the tumbling and falling process, dust mixed between the material particles is dispersed into the space inside the filter chamber, where it is then absorbed and cleaned by the suction pipe, improving the dust removal effect and further enhancing the quality of subsequent particle materials.

1. The name of the design product: drying machine. 2. The use of the design product: for drying and conveying non-flowing fine particle materials with certain moisture content after being crushed. 3. The design points of the design product: in shape. 4. The picture or photo that best shows the design points: perspective view.

The problem to be solved by the present invention is to provide a particle material for use as a filler in dental materials and a dental material using the particle material. The particle material of the present invention, which solves the above-mentioned problem, is an aggregate consisting of a metal oxide having two or more primary particles containing two or more metal elements, wherein one or more of the metal elements is a heavy element with an atomic number of 38 or higher; the particles of the heavy element metal oxide are primary particles with a volume average particle size of 1 nm to 20 nm; and its surface is composed of silica and contains primary silica particles with a volume average particle size of 1 nm to 20 nm, having a specific surface area of ​​180 m². 2 / g or less, per unit volume (100cm³) 3 Flaxseed oil absorbs less than 200g per unit surface area (m²). 2 The flaxseed oil has an oil absorption of less than 0.02g and a light transmittance of over 10%. Based on the overall mass, the mass of the aforementioned heavy elements is 4% to 60%. By employing aggregates, optical properties close to those of small particle sizes can be achieved while improving strength.

The application provides a GIS-based mine safety risk analysis and early warning method and system, relates to the technical field of engineering technology analysis, and the method comprises the following steps: fusing terrain geometry, wind field shearing, micro vortex and powder and particle material transportation and aggregation effect under the GIS framework, reconstructing the unloading direction of the slope surface, depicting the stress redistribution process caused by the vortex unloading, identifying the potential instability influence domain in combination with the boundary constraint of the mine pit and the step, quantifying the risk confidence through multi-source consistency checking, and realizing the fine early warning of the non-traditional instability risk of the high and steep terrain boundary of the mine pit. The application can solve the problem that the existing technology lacks the coupling modeling and spatial expression capability of the wind field shearing, vortex effect and powder and particle transportation and aggregation behavior, so that the potential instability influence domain cannot be identified in time, and the mine safety early warning capability is insufficient.

The application discloses a multi-target granular material parameter calibration device and a working method thereof, and belongs to the field of material physical property detection. The device comprises a square material box, a backlight plate, an aluminum profile framework, a flat-bottom hopper assembly, a forward and reverse bidirectional ball screw module, a split cylinder assembly and a high-precision mass rate detection module. The first split cylinder and the second split cylinder are driven by the forward and reverse bidirectional ball screw module to be closed to form a cylindrical material cylinder or be horizontally separated in parallel. The flat-bottom hopper controls the granular discharge. The high-precision weight sensor is used to obtain mass-time change data. The dynamic shear angle and the static rest angle are obtained by backlight imaging. The application can simultaneously obtain multi-target calibration indexes such as mass flow rate, dynamic shear angle and static rest angle in the same device, reduces the multi-solution problem caused by traditional single-target calibration, reduces the wall effect in the vertical pulling cylinder test, and improves the accuracy and repeatability of granular material parameter calibration.