4results about How to "Avoid density" patented technology

This invention relates to the preparation and application of silicon-carbon anode materials, and discloses a silicon-carbon anode material modified with lithium phosphide nanoparticles, its preparation method, and a secondary battery. The material has a core-shell structure, with the core comprising porous carbon and lithium phosphide nanoparticles and silicon nanoparticles generated in situ within the micropores of the porous carbon; the shell comprises a composite coating layer composed of amorphous carbon and carbon nanotubes; silicon accounts for 45-65 wt% of the modified silicon-carbon anode material by mass, and the P / Si molar ratio of the lithium phosphide nanoparticles to the silicon nanoparticles is 2:98~30:70. A small amount of phosphorus source is first deposited in the porous carbon micropores, followed by lithiation treatment to convert the phosphorus in the porous carbon into lithium phosphide nanoparticles, then a second deposition of silicon nanoparticles, and finally overall carbon coating. This invention's modified silicon-carbon anode material improves the problem of rapid impedance increase in the low-charge range of silicon-carbon anode materials, significantly enhancing the user experience.

This utility model discloses an isostatic pressing device for silicon nitride powder molding, including a conveyor. A sheathing tube is placed at the upper end of the conveyor, and a tube cover is installed at the upper end of the sheathing tube. A mounting plate is fixedly connected to one side wall of the conveyor. Two hydraulic cylinders are installed at the lower end of the mounting plate. Connecting plates are fixedly connected to the output ends of both hydraulic cylinders. A material hopper is fixedly connected to the opposite sides of the two connecting plates. A stirring shaft is rotatably connected to the top inner part of the material hopper. Multiple stirring rods are fixedly connected to the outer wall of the stirring shaft. A spiral blade is fixedly connected to the lower end of the stirring shaft. A through hole is opened at the upper end of the tube cover. The device incorporates a rotating disk, rack, and gears. Under the meshing transmission of the rack and gears, the sheathing tube can reciprocate, causing the powder inside to rearrange under the action of gravity and inertia, providing a uniform material base for subsequent isostatic pressing.

The present application relates to the technical field of wire processing, and provides a wire processing and stranding forming device, which comprises a stranding mechanism, a tension adjusting mechanism, a supporting mechanism, a guiding mechanism, a cooling and shaping mechanism and a controller, the tension adjusting mechanism is assembled at the right end of the stranding mechanism, the supporting mechanism is assembled at the inner wall of the right end of the stranding mechanism, the left end of the supporting mechanism is provided with the guiding mechanism, the guiding mechanism is connected with the stranding mechanism, the cooling and shaping mechanism is arranged at the left side of the guiding mechanism, the cooling and shaping mechanism is connected with the stranding mechanism, and the controller is arranged at the back side of the stranding mechanism. The present application solves the problems of unstable wire laying tension, unadjustable stranding pitch, large guiding deviation, poor forming quality caused by the absence of cooling and shaping and the like of the traditional device, has the advantages of accurate and adjustable tension, stable stranding, reliable guiding, efficient cooling, strong versatility and the like, and can meet the needs of automatic stranding and forming processing of metal wires of various specifications.

This invention belongs to the field of calcium carbonate processing technology, specifically a carbonation tower for processing nano-calcium carbonate. It includes a U-shaped base; a tower body located within the opening of the U-shaped base; a complex mixing device mounted on the U-shaped base; the complex mixing device includes rotating shafts installed on opposite sides of the U-shaped base; the opposite ends of the two rotating shafts are connected to the outer wall of the tower body; a pressure-bearing circular plate located inside the U-shaped base; the pressure-bearing circular plate is located at the bottom of the tower body, and the two are in contact; and a pressure-relieving and energy-delaying mechanism is mounted on the pressure-bearing circular plate. This allows the gas and liquid to continuously oscillate left and right within the tower body, constantly dispersing their distribution, avoiding dead zones during stirring, and preventing material agglomeration and density stratification. The constantly changing positions of the gas and liquid within the tower body facilitate stirring and enhance gas-liquid contact, not only improving the production quality of calcium carbonate but also further reducing the application limitations of the carbonation tower.