7results about How to "Uniform particle distribution" patented technology

This utility model discloses a screening device for plastic granule production, relating to the field of plastic granule screening devices. The device includes a main support and side frames. A vibrating screen frame is inclinedly mounted on the upper side of the main support, with a fixed feeding hopper above it. The vibrating screen frame contains a material trough and a screen. A first collecting frame is located below the screen within the main support. An inverted conical moving frame is slidably configured within the vibrating screen frame. A motor on the side frames drives the moving frame to move via a rotating wheel and connecting rod. Sensor probes are embedded in the side plates of the vibrating screen frame. This device evenly spreads granules through the dynamic displacement of the moving frame. Combined with sensor probe monitoring and motor-driven control, it avoids screen accumulation and improves screening efficiency and accuracy.

The utility model relates to road construction technical field, concretely is a kind of semi-flexible composite pavement construction equipment, including mounting seat, the bottom of mounting seat is rotatably equipped with trowelling mechanism, the outer surface of mounting bracket is fixedly installed with the protective cover for covering trowelling mechanism outside, the rear side of mounting seat top is fixedly installed with handle, the top of mounting seat is fixedly installed with the driving mechanism for controlling trowelling mechanism rotation;Trowelling mechanism includes trowelling disc and the cover plate of fixed installation in trowelling disc top, the inside longitudinal sliding of trowelling disc is equipped with multiple loose components;By setting loose component and guide component, loose component is automatically extended downward when rotating to the front side of guide component with trowelling disc, can carry out mechanical loose to caked material, break hard knot structure, make material particle distribution more uniform;Loose component is retracted when rotating to the rear side of guide component, by trowelling disc is flattened and compacted, avoid the uneven surface caused by caking, improve pavement flatness and compactness.

The application discloses a high-density high-purity polycrystalline kaolinite preparation method under hot isostatic pressing conditions. –3 The steel ladle is placed in a graphite furnace cylinder body of a hot isostatic pressing high-pressure container, and a graphite sealing cover is covered on the steel ladle; argon is used as a pressure transmission medium, a multi-gradient cylinder body temperature and pressure increasing mode is adopted, the pressure in the cylinder sample bin is increased to 105.8 MPa, the temperature is increased to 800 DEG C, and the temperature and pressure are kept for 4.8 hours; a multi-gradient cylinder body temperature and pressure decreasing mode is adopted, the temperature in the cylinder sample bin is decreased to 177 DEG C, and the pressure is decreased to 71.8 MPa; finally, the pressure is released, the temperature is decreased to room temperature, and the polycrystalline kaolinite aggregate is obtained; and the technical blank of preparing a high-density polycrystalline kaolinite aggregate bulk body rich in aluminosilicate mineral experimental samples under high-temperature and high-pressure conditions is solved.

The invention relates to the technical field of novel electro-catalysis materials, and discloses a fullerene modified carbon loaded amorphous niobium oxide nano island confinement osmium-based ultra-small cluster electro-catalyst as well as a preparation method and application of the fullerene modified carbon loaded amorphous niobium oxide nano island confinement osmium-based ultra-small cluster electro-catalyst. Amorphous niobium oxide (NbOx) and osmium (Os) clusters are uniformly loaded on the carbon substrate material, the amorphous niobium oxide is in a nano island form, and the average particle size of the osmium (Os) clusters is 0.8-1.2 nm. The ultrathin nano carbon sheet FDC prepared by modification of fullerene has the characteristics of excellent conductivity and high specific surface area, so that active components are fully exposed, the phase interface contact area is increased, and the heterogeneous catalysis behavior is greatly promoted. The electrocatalyst has excellent electrocatalytic activity and stability, the active components of the electrocatalyst have the characteristics of small particle size, uniform particle distribution and the like, and the problems of reduction of catalytic performance and the like caused by reduction of active sites due to overlarge particles of the active components in the electrocatalyst with a composite structure are solved.

This invention discloses a method for preparing high-density, high-purity polycrystalline barite polymers under hot isostatic pressing conditions, wherein barite sample powder is compacted and sealed to a vacuum degree of 10. –3 The sample was placed in a steel cladding with dimensions of 55.89 mm outer diameter × 88.76 mm height × 3 mm wall thickness. The cladding was then placed inside the graphite furnace cylinder of a hot isostatic pressure vessel and sealed with a graphite cap. Using argon as the pressure transfer medium, a multi-gradient cylinder heating and pressurization method was employed to raise the temperature inside the sample chamber to 950 °C and the pressure to 112.5 MPa. This pressure and temperature were maintained for 6.0 hours. A multi-gradient cylinder cooling and depressurization method was then used to lower the temperature inside the sample chamber to 178 °C and the pressure to 71.1 MPa. The pressure was then released and the sample was cooled to room temperature to obtain a polycrystalline barite polymer. This method filled the technical gap in the preparation of bulk sulfate experimental samples of high-density polycrystalline barite polymers under high temperature and high pressure conditions.

The invention relates to the technical field of building materials, in particular to a preparation method of a green low-thermal-conductivity insulating brick suitable for an outer wall, which comprises the following steps: S1, weighing industrial waste, clay, a foaming agent and reinforced fibers according to a ratio, and primarily mixing; s2, carrying out wet ball-milling treatment to obtain ball-milled slurry; s3, adding a binder and water into the ball-milled slurry, and carrying out stirring homogenization treatment to obtain homogenized slurry; s4, injecting the homogenized slurry into a mold, and molding through a compression molding process to obtain a green brick body; s5, performing low-temperature sintering treatment to obtain a sintered brick body; and S6, carrying out surface hydrophobic treatment on the sintered brick body to obtain a finished insulating brick product. According to the invention, by optimizing the raw material ratio, controlling the molding and sintering process and introducing the surface hydrophobic treatment, the coordination and unification of green raw material utilization, low thermal conductivity control and the moisture resistance of the brick body are realized.

The application discloses a preparation method of high-density high-densification polycrystalline trachyandesite under high-temperature high-pressure conditions. –3 The application discloses a preparation method of high-density high-densification polycrystalline trachyandesite under high-temperature high-pressure conditions, which comprises the following steps: completely sealing trachyandesite sample powder in a ladle cover with a vacuum degree of 10 –3 Pa; placing the ladle cover in a graphite furnace cylinder body of a high-pressure container of a hot isostatic pressing device, covering a graphite sealing cover; taking argon as a pressure transmission medium; adopting a multi-gradient hot isostatic pressing forming process of first increasing pressure and then increasing temperature to increase the temperature in the cylinder body sample bin to 950°C and the pressure to 91.5 MPa, and keeping constant temperature and constant pressure for 6.8 hours; adopting a multi-gradient cylinder body temperature and pressure decreasing mode to decrease the temperature in the cylinder body sample bin to 176°C and the pressure to 58.7 MPa; and finally, decreasing the pressure and temperature to room temperature to obtain a polycrystalline trachyandesite aggregate sample; and the technical blank of preparing a large bulk experimental sample of high-densification polycrystalline trachyandesite aggregate under high-temperature high-pressure conditions is solved.