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86results about How to "Reduce bridging" patented technology

Preparation method of negative electrode slurry capable of reducing expansion of lithium ion battery

The invention discloses a preparation method of negative electrode slurry capable of reducing the expansion of a lithium ion battery. The preparation method comprises the following steps of: carrying out dry blending on a negative electrode active substance and a conducting agent in advance; dissolving sodium carboxymethyl cellulose into de-ionized water to obtain a CMC (Carboxyl Methyl Cellulose) gel solution with the concentration of 1.0%-2.0%; adding one part of the CMC gel solution into a mixture of the negative electrode active substance and the conducting agent and stirring at a high speed for 0.5-1h; adding the balance of CMC gel solution and stirring at a high speed for 1-3h; adding a modified SBR (Styrene Butadiene Rubber) binding agent and stirring at a middle speed for 0.3-1h; and adjusting the viscosity. By adopting the method of carrying out the dry blending on artificial graphite and the conducting agent in advance, adding the glue solution by two times and utilizing modified SBR as the binding agent, a bridge phenomenon of the artificial graphite is reduced, a pole piece structure is changed, the binding force between grains is improved and the expansion of a negative electrode is reduced; meanwhile, the slurry sedimentation of the artificial graphite is inhibited. The preparation method of the negative electrode slurry capable of reducing the expansion of the lithium ion battery has important meanings on ternary lithium ion batteries and improvement of machinability, capacity and safety of high-capacity power batteries.
Owner:南京国轩新能源有限公司

Preparation method of high-vibration-compaction low-specific-surface-area lithium iron phosphate made by positive pole material

The invention relates to a preparation method of high-vibration-compaction low-specific-surface-area lithium iron phosphate made by a positive pole material, and relates to lithium ion. The preparation method comprises the following steps of: mixing a lithium source compound, an iron source compound and a phosphorus source compound according to stoichiometric proportion by a watering wet method according to 70%-85% of solid content, adding a metal-ion-doped oxide, a primary carbon source and a dispersant agent, uniformly mixing, and carrying out spray granulation after a ball mill treatment, thus obtaining a dry powder body; pretreating the dry powder body in an inert atmosphere, adding water according to 70%-85% of solid content after cooling the dry powder body, meanwhile, adding a secondary carbon source and the dispersant agent, and uniformly stirring, thus obtaining the dry powder body through the ball mill treatment and the spray granulation; and carrying out the first heat treatment on the dry powder body in the inert atmosphere, and carrying out high temperature treatment and air flow classification, thus obtaining the high-vibration-compaction low-specific-surface-area lithium iron phosphate made by a positive pole material. The processing property of the positive pole material of lithium iron phosphate is obviously improved without influencing other electrochemistry properties.
Owner:XTC NEW ENERGY MATERIALS(XIAMEN) LTD

Composite material J type longitudinal wall positioning integral forming tool and forming method thereof

The invention relates to a composite material J type longitudinal wall positioning integral forming tool. A foundation coating is arranged on a coating forming tool. A J type longitudinal wall is arranged in the designated position on the upper surface of the foundation coating. An inner longitudinal wall forming tool is arranged on the inner surface of the J type longitudinal wall through a rubber compensation layer, and the inner form of the J type longitudinal wall is completely filled with the inner longitudinal wall forming tool. The outer surface of the J type longitudinal wall is coated with an outer longitudinal wall forming tool. A cuboid structure without a cavity is formed through the outer longitudinal wall forming tool, the inner longitudinal wall forming tool and the J type longitudinal wall. A positioning beam is connected with the coating forming tool through positioning lug pieces. The positioning beam stretches across the outer longitudinal wall forming tool. The top of the positioning beam is connected with the upper surface of the outer longitudinal wall forming tool through a fixing member. Specific to the structural characteristics of a carbon fiber composite material J type wall, the problems of excursion of the longitudinal wall axis size, rib-line size and longitudinal wall shape in the manufacturing process of the J type wall are solved through the optimal design of an existing tool structure.
Owner:SHENYANG AIRCRAFT CORP

Spiral discharging bin capable of rotating in two directions

The invention relates to a bin, in particular to a spiral discharging bin capable of rotating in two directions. The bin comprises a feed cylinder, a spiral conveying machine, a rotary discharging cylinder and a hydraulic station; the hydraulic station is arranged on the ground; the top of the feed cylinder is provided with a feed port; the bottom of the feed cylinder is provided with the rotary discharging cylinder; the rotary discharging cylinder comprises an upper cylinder body, a lower cylinder body and a slewing mechanism which is connected with the hydraulic station; the lower cylinder body is fixed with the feed cylinder; the upper cylinder body is arranged on the lower cylinder body through the slewing mechanism; the slewing mechanism drives the upper cylinder body to rotate; the side of the upper cylinder body is provided with a feed hole; the spiral conveying machine passes through the feed hole, and is connected with the upper cylinder body and used for conveying materials; and the spiral conveying machine and the upper cylinder body rotate. According to the spiral discharging bin, materials are discharged by the two-direction rotation structure of the rotary discharging cylinder and the spiral conveying machine, so that the stability of the discharging amount of the bin is improved, and failure rate of equipment is reduced.
Owner:SUZHOU XIELI ENVIRONMENTAL PROTECTION EQUIP

Waste plastic recycling and granulating production equipment

The invention relates to the technical field of environmental protection equipment, and discloses waste plastic recycling and granulating production equipment, which comprises an extruder, a hopper, amelting screw and an extrusion screw, two groups of sliding chutes and slideways are arranged at positions, corresponding to the upper part of the hopper, of the extruder, and the slideways are movably connected with an air cylinder through sliding blocks. According to the waste plastic recycling and granulating production equipment provided by the invention, when molten plastic rotates and movesalong with the extrusion screw, the two filtering pieces are inserted into a groove of the extrusion screw in turn to filter out incompletely molten plastic or impurities, so that the purity of meltis improved, and the quality of regenerated plastic is improved; and secondly, plastic on the inner wall of a hopper body is extruded through airflow generated when the air cylinder moves, one side ofthe plastic where bridging occurs is suspended, movement of plastic fragments in the hopper is assisted, then disturbance of the plastic fragments can be increased through rapid pulse airflow, the bridging probability is further reduced, the conveying speed of the broken fragments is increased, so that the conveying speed is matched with the processing speed of a granulator.
Owner:常丹阳

System and method for acidizing and roasting rare earth concentrate through multi-section external heating rotary furnace

The invention discloses a method and system for acidizing and roasting rare earth concentrate through a multi-section external heating rotary furnace. The method comprises the following steps of metering and putting the rare earth concentrate into an external heating rotary drying furnace, controlling heating temperature of materials and staying time in the furnace, exhausting tail gas, conveyingdust and sulfuric acid into a rotary acidifying furnace, and controlling the temperature of the materials and the staying time in the furnace; exhausting the tail gas entering an acidified tail gas recovery device after the tail end reaches the standard; enbaling acidified materials to enter a rotary roasting furnace to be roasted, controlling the temperature of the materials and the staying timein the furnace, and exhausting roasted tail gas entering a roasting tail gas recycling device after the roasted tail gas reaches the standard; and enabling high-temperature roasted materials to entera rotary cooling furnace to be cooled and be conveyed to a water leaching procedure so as to obtain the acidified roasted rare earth concentrate with the roasted material leaching rate being 93%-98%.According to the method, the tail gas treatment amount and operation cost are greatly reduced, the fluidity of the dried rare earth concentrate is good, the corrosion rate of equipment and pipelines is reduced, and equipment pipeline blockage is reduced.
Owner:西安三瑞实业有限公司
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