897 results about "Particulate material" patented technology

One aspect is a method for producing a first intermediate product. A feedstock is provided that comprises a first polyester. The first polyester is contacted with a further organic compound in a volume section V3 to obtain a further initial mixture. A weight average molar mass of the first polyester is reduced in the volume section V3 to obtain a first intermediate mixture. The first intermediate mixture comprises a first intermediate product and the further organic compound. First particulated material is added to the first intermediate mixture in a volume section V4. A filtering means is pre-coated with the first particulated material. At least one impurity is at least partially removed from the first intermediate mixture using the filtering means. The first particulated material has a median pore diameter in the range of 5 mm to 20 mm.

A piled granular material surface management robot comprises an auger-based drive system, a memory, and a processor coupled with the memory. The processor is configured to control movement of the robot via the auger-based drive system. The processor is also configured to direct a traversal of a surface of piled granular material in a bulk store, wherein a crust layer of the surface is broken up by auger rotation of the auger-based drive system during the traversal.

One aspect is a method for producing a first intermediate product. A feedstock is provided that comprises a first polyester. The first polyester is contacted with a further organic compound in a volume section V3 to obtain a further initial mixture. A weight average molar mass of the first polyester is reduced in the volume section V3 to obtain a first intermediate mixture. The first intermediate mixture comprisesa first intermediate product and;the further organic compound.First particulated material is added to the first intermediate mixture in a volume section V4. A temperature of the first intermediate mixture in the volume section V4 is in the range of 160° C. to 230° C.

A material removal system includes a collection conduit having a distal end that is positionable adjacent particulate material. A primary particle separator system connected to the collection conduit separates quantities of particulate material entrained in an air stream. A secondary particle separator system connected to an outlet of the primary particle separator system separates additional quantities of particulate material entrained in an air stream exiting the primary particle separator system. An air pump connected to an outlet of the secondary particle separator system creates an airflow through the collection conduit and the primary and secondary particle separator systems. A conveyor system operatively associated with material discharge ports of the primary and secondary particle separator systems collects separated particulate material from the material discharge ports of the primary and secondary particle separator systems and transports the separated particulate material to a material discharge end of the conveyor system.

The invention provides a discontinuous graded soil large-scale discrete element model generation method. The method comprises the following steps: (1) creating a soil particle material and setting soil intrinsic parameters and contact model mesoscopic parameters; (2) creating a 3D penetrometer geometric model for assisting model hierarchical generation and impact simulation; (3) importing the geometric model into EDEM software; (4) creating a soil particle factory for hierarchically generating the model; (5) generating particles with different scale factors in the soil particle factory; (6) selecting different geometric model combinations for assisting model hierarchical generation in the step (2) to generate a model for simulation; and (7) importing the geometric model of the 3D penetrometer in the step (2) into the model generated in the step (6) to carry out impact penetration dynamics simulation. According to the method, construction of the discontinuous graded soil large-scale discrete element model can be realized, and the problem that effective calculation cannot be carried out due to too many particles of a large-scale model generated by fine-grained soil can be effectively solved.

The invention discloses a breakable rock-soil granular material triaxial test simulation method based on a lattice spring-discrete element coupling framework, which comprises the following steps: establishing a triaxial test model rectangular boundary condition, and generating a non-breakable spherical rock-soil granular material in the boundary; replacing the generated non-crushable spherical particle material with rock-soil particles considering particle crushing based on a lattice spring-discrete element coupling frame, and assigning parameters; replacing wall bodies on the two sides of the rectangular boundary condition with a large number of bonded spherical particles to generate a flexible membrane boundary; and applying confining pressure to the boundary of the generated flexible membrane, and carrying out shear simulation. According to the method, the Young modulus and the Poisson's ratio can be matched in a high-precision mode, the heterogeneity of elastic response is reduced, strength degradation and friction characteristics are simulated, and the calculation efficiency is greatly improved.

A process and system for adding particulate material to a flow of foam to a headbox. A particulate material feeder includes a supply chamber fillable with particulate material, a supply hopper, and an airlock valve disposed between the supply chamber and the supply hopper. The particulate material in the supply chamber is flowable into the supply hopper when the airlock valve is open. A pressure supply line coupled to the supply chamber and configured for flowing air into and / or from the supply chamber.

A process and system for adding particulate material to a flow of foam to a headbox. A particulate material feeder includes a first supply hopper fillable with particulate material, a second supply hopper, and a rotary airlock valve disposed between the first and second supply hoppers. The rotary airlock valve is configured for transferring the superabsorbent material from the first supply hopper to the second supply hopper. A pressure supply line is coupled to the rotary airlock valve and configured for flowing air into and / or from the rotary airlock valve.

A device for dosing particulate material uses multiple valve plates to collectively open or close a discharge port, so that an opening degree of the discharge port can be adjusted according to the degree to which the adjustment ends of each valve plate are gathered, thereby effectively adjusting the opening degree of the discharge port. When the amount of particulate material to be dosed is large, the opening degree of the discharge port can be increased accordingly to increase the discharge speed of the particulate material, shortening the discharge time and improving the efficiency of dosing. Furthermore, the opening degree of the discharge port can be adjusted to be adapted with particulate material of different volumes, such that larger particulate material can also smoothly pass through the discharge port to avoid blockage of the discharge port.

The present invention discloses a fine-grained high-density concrete and its production process, which relates to the field of concrete technology. The concrete comprises solid granular material, cement, water, and nano anti-shrinkage additives; the unit volume of the solid granular material is 1m 3 The weight of each component is based on G A :G c :G js :G a； Among them, G A is the weight of solid particulate material per unit volume, G c is the weight G A The weight of cement filled in the void volume of solid particulate material, G js For the weight of external water, including G c The sum of the weight of water required for cement hydration and rheological properties of concrete before curing minus the weight G A The weight of water in the solid particulate material; G a The weight of the nano-anti-shrinkage additive added to the pore volume after cement hydration, minus the excess free water volume. Fine-aggregate, high-density concrete has a much lower porosity than ordinary concrete, significantly improving the concrete's compressive, flexural, and durability properties.

A solid distribution system of an agricultural spreader includes a product hopper configured to contain solid particulate material, a blower, a manifold coupled to the blower and having a plurality of outlets, at least one boom arm comprising a plurality of parallel rigid tubes configured to carry the solid particulate material and air from the blower, and a plurality of hoses. The manifold is configured to split air flow from the blower into flows through each of the plurality of outlets. Each valve is in fluid communication with one of the outlets and one of the rigid tubes, and each valve individually controls flow through a respective one of the rigid tubes. Vehicles having such solid distribution systems are also disclosed.

A transport container for bulk cargo / materials has a rectangular base and four sidewalls. The sidewalls are hingedly connected to the base and movable from an erect condition, providing a box structure for loading of the container, into a folded flat condition for stacking of the container. The base includes hinged floor for discharge of the particulate material contents by lifting the container with forklift engaging formations at an upper end of two oppositely arranged sidewalls. Forklift sleeves on an underside of the floor allow for movement of the loaded container.

The invention relates to the technical field of discharging conveying, in particular to a grinding equipment discharging conveying device with a screening function and a using method of the grinding equipment discharging conveying device. The grinding equipment discharging conveying device comprises a conveying pipe, a feeding bin arranged at one end of the conveying pipe and a discharging opening formed in the other end of the feeding bin; a rotating shaft is rotationally arranged in the conveying pipe, and a spiral blade is fixedly connected to the outer part of the rotating shaft; the spiral blade comprises a material receiving plate fixedly connected to the rotating shaft, a screen fixedly connected to one side of the material receiving plate, a cavity formed between the material receiving plate and the screen, an opening formed in the material receiving plate and a bucket fixedly connected to one side of the opening. The screening device has the beneficial effects that in the conveying process of the materials through the spiral blades, the materials are screened through the screen, large-particle materials are screened to the interior of the cavity, the purpose of preliminary screening of the materials in the material conveying process is achieved, and therefore the screening pressure of follow-up screening equipment is relieved, and the production efficiency is improved.

To properly guide a flow of granular material to a probe in a measuring system for measuring characteristics of the granular material separated from gas by a cyclone separator.SOLUTION: A separation system includes: a cyclone that separates granular material from mixed fluid containing a gas and the granular material; a container that has a truncated conical portion whose diameter gradually decreases downward and is connected to a granular material outlet of the cyclone so that the granular material separated by the cyclone falls while swirling; a conical cone disposed in the container; and a measurement probe that has a measurement unit disposed downstream of a flow of the granular material passing between a lower end of the cone and an inner wall of the container and measures a particle diameter of the granular material passing through the measurement unit.SELECTED DRAWING: Figure 1

A drop tube for dropping particulate material from an air boom assembly has, in order: a rigid elbow connectable to an air boom outlet; an upper flexible section bendable in at least a direction parallel to a direction of travel of the air boom assembly; a rigid section having an air exhaust vent in a side thereof and a deflector therein; a lower flexible section bendable in at least the direction parallel to the direction of travel; and, an exit aperture having a cross-sectional area less than a cross-sectional area of the lower flexible section of the drop tube above the exit aperture.

The invention provides a system calibration and verification method for a discontinuous graded cohesive soil DEM model. The system calibration and verification method comprises the following steps: (1) preliminarily determining microscopic parameter values of the DEM model; (2) sensitivity analysis of microscopic parameters of each DEM model; (3) gradually optimizing and iteratively analyzing each factor in combination with a sensitivity analysis result to obtain a microscopic parameter optimization value range of the DEM; (4) further optimizing the microscopic parameters of the DEM model based on Box-Behnken test design to obtain multiple groups of optimization parameter combinations; and (5) parameter verification. The method is reasonable in conception, integrates parameter calibration, precision verification and actual experiments, enables the purpose of parameter calibration to be clearer, can provide a more efficient and directional parameter calibration thought for cohesive soil with complex parameter calibration and fewer references, especially fine-grained soil or granular materials with extremely uneven grain size distribution, and is suitable for popularization and application. And meso-scale parameter calibration under quasi-static stress can be converted into parameter calibration and verification under dynamic load stress simulation.

The invention provides a carbon dioxide capture system based on a calcium-based granular material and a control method of the carbon dioxide capture system. The system comprises a reactor, a decomposition bin, a conveying branch and an input branch, the input branch inputs raw flue gas to the reactor; the conveying branch conveys a calcium-based particle material to the reactor by using the heated flue gas; the reactor is used for controlling the internal temperature by selecting the raw flue gas input by the input branch so as to control the adsorption reaction; the decomposition bin is used for controlling the movement of the supporting plate under the mechanical action and the air pressure action so as to guide the flowing of the materials and further control the desorption reaction. A set of complete and ingenious heat circulation process and material circulation process is constructed, the circulation processes are linked with each other, the structural design is ingenious and practical, and while efficient adsorption and desorption of carbon dioxide are guaranteed, the energy utilization efficiency is improved, the energy consumption is reduced, and the equipment maintenance cost and the energy purchase cost are reduced.

The utility model discloses a paving and arranging mechanism for a conveying belt, which relates to the technical field of material conveying equipment and comprises a rack, a discharging mechanism, a conveying mechanism, a sweeping mechanism and a vibrating and arranging mechanism. The conveying mechanism comprises a material disc, a plurality of material grooves are formed in the material disc in an array mode, and the two sides of the material disc are each connected with a material disc traction chain. The charging tray traction chain is in sliding movement fit with the charging tray moving guide rail, and the power output unit provides driving force for the charging tray to move along the charging tray moving guide rail; the material sweeping mechanism is located above the material disc and comprises a plurality of material sweeping rollers, a plurality of sets of elastic battens are arranged on the material sweeping rollers, and materials are swept into the material groove through rotation; the vibration material arranging mechanism is located below the material disc and comprises a vibration plate, a vibration motor is arranged at the bottom of the vibration plate, multiple rows of flow guide battens are arranged on the upper surface of the vibration plate, the length direction of the flow guide battens is parallel to the moving direction of the material disc, and the flow guide battens are correspondingly arranged in gap areas between the adjacent material grooves. According to the utility model, dispersed paving of particle materials is realized, and the treatment efficiency and effect are improved.

The invention discloses a preparation and quality detection device and method for uniformly layered granular materials with different compactness, and belongs to the technical field of geotechnical test equipment.The device comprises a receiving container arranged on an inner supporting frame, the receiving container is connected with a diffuser through a control valve, and a miniature CPT device is arranged between the diffuser and the inner supporting frame; the top of the receiving container is connected with a hopper through a flexible hose, and the hopper is arranged on the top of the outer supporting frame. A porous plate structure in the diffuser is used for controlling the deposition strength, particle distribution is monitored through a micro pressure sensor and a high-speed camera, the aperture is adjusted, multi-dimensional characteristic in-situ detection is achieved by means of multiple sensors of a micro CPT device, and parameters are optimized and optimal deposition parameters are predicted through a controller. According to the preparation and quality detection device and detection method for the layered uniform granular materials with the different compactness, the deposition strength and particle distribution can be accurately controlled, multi-dimensional detection and automatic control are achieved, the test precision and efficiency are improved, and manual errors are reduced.

The invention relates to a particulate material and a method for preparing the same. The particulate material is composed of a plurality of composite particles. The composite particle comprises a porous particle skeleton, and the porous particle skeleton comprises micropores and / or mesopores. The total pore volume of micropores and mesopores measured by gas adsorption is in the range of 0.4 to 2.2 cm3 / g. The composite particle includes a plurality of electroactive material domains and a plurality of modified material domains disposed within an internal pore volume of a porous particle backbone. At least a portion of the modified material domains are located between adjacent electroactive material domains.

A self-mixing interferometer configured to monitor particulate material within a monitored region of space comprising a laser cavity assembly (1A) and an optical assembly (1B) configured to bathe the monitored region with laser light of the interferometer. A laser monitoring unit (1C) is configured to acquire an interferometric signal generated by the interferometer in response to light returned to the laser cavity assembly from said wavefronts by said particulate material. A processing module (1D) is configured to determine a property of the particulate material within the monitored region according to a wavelet transformation of the interferometric signal at least a part of which comprises a waveform of changing frequency.

The invention relates to the technical field of geotechnical engineering grade tunnel engineering, and provides a pea gravel hydraulic reclamation process simulation method and system based on discrete elements and application. The method comprises the following steps: S1, determining size parameters of a shield tunnel, macromechanical parameters of duct pieces and surrounding rocks, a hydraulic reclamation position and hydraulic reclamation pressure; s2, determining particle size distribution of pea gravel particles and mesomechanical parameters of pea gravel; s3, constructing three-dimensional models of duct pieces, surrounding rocks, hydraulic reclamation pipes and the tail part of the shield tunneling machine; s4, constructing a pea gravel hydraulic reclamation pressure implementation model; and S5, realizing the model by utilizing the pea gravel hydraulic reclamation pressure, and realizing simulation of the pea gravel hydraulic reclamation process of the single-ring duct piece in a step-by-step hydraulic reclamation mode. The device can simulate the process that pea gravels are continuously blown into gaps, is suitable for research on simulation of mechanical behaviors of discrete granular materials, and has important practical value.

The invention discloses a novel dust removal and powder control system, and relates to the technical field of green production. On the basis of retaining an original collecting mechanism, the vortex cyclone cluster and the drainage fan are additionally arranged to form a combination of the vortex cyclone cluster and the drainage fan, meanwhile, the grid adjusting mechanism and the windproof collecting valve are additionally arranged in the vortex cyclone cluster, and the following effects are achieved through the combination of the grid adjusting mechanism and the windproof collecting valve; by means of the air flowing force, coarse particle materials in the raised dust can be controlled to be effectively recycled (noted: in the crushing production, the coarse particle materials are rare high-quality finished products), the raised dust displacement can be controlled to be reduced by more than 40% through the combination of the grid adjusting mechanism and the windproof collecting valve, and the energy consumption is lower, so that the environment-friendly and energy-saving effects are achieved.

In one aspect, there is provided a composition comprising a waste particulate material and a biodegradable polymer; wherein the biodegradable polymer comprises a thermoplastic polymer; a weight portion of said biodegradable polymer within said composition is between 10 and 50%; and wherein said composition is flowable at a temperature between 100 and 220° C.. Furthermore, shaped articles derived from the composition and method of manufacturing thereof are also provided.

The utility model relates to the technical field of plastic recycling, and discloses a plastic particle material preheating and mixing device which comprises a preheating tank, a supporting frame is fixedly mounted at the top of the preheating tank, and a stirring piece is mounted at the bottom of the supporting frame through a driving mechanism; a scraping plate matched with the inner wall of the preheating tank is arranged on the stirring piece through a compensation mechanism; according to the plastic particle stirring device, a telescopic rod is controlled to extend, the telescopic rod drives a driving block to descend, through the effect of a spiral rod, the driving block can rotate while descending, then an electric heating plate is driven to rotate while descending, and therefore plastic particles in a preheating tank can be stirred; and meanwhile, the electric heating plate drives the scraping plate to rotate and descend, so that plastic particles attached to the inner wall of the preheating tank can be scraped, the device can be controlled to work only through one driving source, and the failure rate of the device is reduced.

The invention provides an infrared shielding flexible composite phase change film and a preparation method thereof. The composite phase change film is a flexible composite film material synthesized by taking a cellulose acetate porous film as a framework and a phase change material as a core material and doping a high-reflectivity nanoparticle material. The preparation method of the composite phase change membrane comprises the following steps: forming pores by a phase inversion method, carrying out gravity settling to obtain a cellulose acetate porous membrane with low emissivity, and dipping to obtain the flexible composite phase change membrane. The prepared flexible composite phase change film is a bendable film with certain mechanical strength, the system has the infrared emissivity reducing performance and the temperature control performance, and the composite phase change material under the dual-mode function can efficiently achieve the infrared shielding effect.

A surface structure to form an area of hard-standing and method of forming the same, comprising at least a first mesh and typically a ballast material, and possibly a second or further mesh layer, and a particulate body formed by a particulate material bound by a resin acting as an external surface for the surface structure. The mesh layers act to reinforce the relatively unitary structure, reducing damage to the particulate body that may otherwise be subject to crack propagation.

A method of producing recyclable Ethylene-vinyl acetate (EVA) material from EVA waste comprises: first step of inputting the EVA waste a first heating chamber; second step of breaking or weakening crosslinking chains of the EVA waste; third step of obtaining recyclable EVA material by extruding the EVA waste obtained in the second step using a first extruder; fourth step of curing the recyclable EVA material obtained in the third step at room temperature for a predetermined amount of time; fifth step of breaking or weakening the crosslinking chains remaining in the recyclable EVA material; sixth step of extruding the recyclable EVA material obtained in the fifth step using a second extruder and forming the recyclable EVA material to pellets using a first pelletizer; seventh step of removing impurities from the recyclable EVA material obtained in sixth step.

A dust filtering and collection system for filtering dust and other debris particles from an incoming dust laden air stream, such air stream generally being used for conveying granular material into or from a bulk tank trailer, a railroad car, or other conveying vehicle, the filtering system designed to be functioned by vacuum air pressure, operatively generated by a blower, to draw in the soiled air into the system, to cleanse such air for further use in the conveying of the granular material. The air flow may be reversed, to provide for a dislodging of any dust particles from the filtering system, and to cleanse the filter for further efficient usage of the system in conveying granular material into or out of the tank trailer, or other vehicle during usage.

The invention discloses a test device for positioning a soil slope slip plane based on acoustic emission, the test device comprises a simulation unit, a test unit and a signal acquisition and analysis unit, the simulation unit encloses a simulation cavity, and the simulation cavity can accommodate a landslide mass geotechnical material and is provided with a waveguide tube and a granular material; normal pressure is applied to the simulation unit by using the first loading mechanism, and acting force is applied to the lower-layer shear box by using the second loading mechanism. An acoustic emission sensor of the signal acquisition and analysis unit is used for acquiring acoustic emission signals, and a signal analysis module can analyze the acoustic emission signals generated in the shear test process. In the test process, particle materials with different particle sizes are replaced, loading conditions of the test unit are adjusted, acoustic emission spectrum characteristics of the particle materials with different particle sizes are analyzed, changes of the particle materials with different particle sizes in different shear speeds and stress states are analyzed, and an accurate slip plane positioning basis is provided. The invention further provides a test method for positioning the soil slope slip plane based on acoustic emission.