12results about How to "Guaranteed Particle Size" patented technology

The invention provides a preparation method of nano silicon dioxide particles, which comprises the following steps: (1) dissolving alkoxy silane in an organic solvent 1, and uniformly mixing to obtain a solution A with the density of rho; (2) uniformly mixing ammonia water and an organic solvent 2 to obtain a solution B; and (3) heating the solution B to T, and then adding the solution A for reaction to obtain the nano silicon dioxide particles, wherein rho is larger than or equal to 0.890 g / cm < 3 > and smaller than or equal to 0.910 g / cm < 3 >, and rho and T meet the following relational expression that T is larger than or equal to 22 rho and According to the preparation method disclosed by the invention, by optimizing a synthesis route, particularly by controlling the density of the silane solution and the reaction temperature under the corresponding density, the particle size and the particle size uniformity of the nano silicon dioxide particles can be effectively controlled, and the small-particle-size (less than 100nm) nano silicon dioxide particles with relatively high particle size uniformity are prepared.

The invention discloses a lithium manganese iron phosphate positive electrode material and a preparation method and application thereof, and belongs to the technical field of lithium battery positive electrode materials, the preparation method comprises the following steps: S1, adding a carbon nanotube into concentrated sulfuric acid and concentrated nitric acid for purification, heating and stirring, washing, and drying to obtain an acidified carbon nanotube; adding the acidified carbon nanotubes and soybean protein isolate into a phosphate buffer solution, and performing ultrasonic dispersion, ice-water bath reaction, centrifugation, filtration and drying to obtain a carbon source; s2, uniformly mixing a lithium source, a manganese source, an iron source and a phosphorus source, adding a carbon source, continuously stirring uniformly, ball-milling, drying, and pre-sintering to obtain a pre-sintered product; and S3, adding a carbon source into the pre-sintered product, continuously carrying out ball milling and drying, and carrying out secondary sintering to obtain the lithium iron manganese phosphate positive electrode material. The obtained lithium manganese iron phosphate positive electrode material is good in electrochemical performance, excellent in cycle performance and better in compaction density, and can be widely applied to lithium ion batteries.

The invention discloses an operation method of a milling machine based on milling material particle size accurate control, the milling machine comprises a power device, a control system, a belt conveying device, a milling material particle size identification device, a support leg lifting device, a milling hub and milling chamber mechanism and a walking device, a milling material particle size recognition device is installed at the discharging end of the belt conveying device, a control system is arranged on the milling machine operation platform and used for collecting and analyzing particle size distribution data input by a sensor of the milling material particle size recognition device, and particle size matching parameters are adjusted in real time according to the milling material particle size distribution data. And the milling speed of the milling machine and the rotating speed of the milling hub are controlled, so that the particle size of the milled material is ensured to be within a set range, the utilization rate of the milled material is greatly improved, and effective utilization of resources is realized.

A steam powder tail gas waste heat recovery refrigeration coupling DTB crystallization system comprises steam powder process equipment for conducting steam flow crushing on titanium dioxide materials through steam, crystallization process equipment for crystallizing titanium liquid and a refrigerating unit. The refrigerating unit is externally connected with a cooling circulation mechanism, and a generator, an absorber, a condenser and an evaporator are arranged in the refrigerating unit. And the absorber, the condenser and the cooling circulation mechanism are circularly connected to form a second circulation. And a second cooling medium is filled in the second circulation. The steam powder process equipment comprises a steam flow crusher and a steam powder tail gas spray tower, and the steam powder tail gas spray tower is circularly connected with the generator to form a first cycle. And a third cycle is arranged in the crystallization process equipment, and a third cooling medium is filled in the third cycle. According to the utility model, the refrigerating unit is matched with the three-stage DTB crystallization process, so that the efficient utilization of energy is realized, and the retention time and the crystal growth time in the crystallization process are effectively controlled.

The utility model relates to the technical field of titanium dioxide treatment, and discloses a premixing device for producing titanium dioxide through continuous acidolysis, which comprises a collecting base, a support frame body is arranged at the top of the collecting base, a support pipe fitting is arranged on the right side of the top of the collecting base, and a treatment barrel piece is arranged on the side surface of the support pipe fitting. A feeding assembly is arranged at the top of the treatment cylinder part, and an inner mixing treatment assembly is arranged on the inner wall of the treatment cylinder part. According to the premixing device for producing titanium dioxide through continuous acidolysis, by arranging the feeding assembly, titanium dioxide needing to be premixed is added from the feeding assembly arranged at the top, the titanium dioxide can be placed on the uppermost first sieve plate during adding, and screening treatment can be conducted through cooperation of the reciprocating assembly with the first sieve plate and the second sieve plate; it is ensured that the particle size of the entering titanium dioxide meets the requirement, and it is avoided that too large caked titanium dioxide is added into the treatment barrel to affect the internal mixing efficiency.

The invention discloses black wheat milling equipment, belonging to the technical field of black wheat processing, comprising a bracket, an outer shell, a milling assembly and a first cooling assembly, wherein the outer shell is fixedly connected to the upper end of the bracket, the milling assembly comprises a first milling roller and a milling barrel, the first milling roller is rotatably connected to the inside of the milling barrel, the milling barrel is integrally formed inside the outer shell, a plurality of evenly distributed sieve holes are provided on the milling barrel, the first cooling assembly is used to cool the milling assembly, the first milling roller has a plurality of milling convex parts for milling, a plurality of first cavities matching the milling convex parts are provided on the first milling roller, and the first cooling assembly is used to transport cooling liquid into the first cavity to cool the milling convex parts. Compared with the prior art, the black wheat milling equipment of the invention can avoid the situation that the high temperature environment during the milling process affects the taste of black wheat, is conducive to improving the quality of black wheat, is conducive to improving the reputation of manufacturers, and is conducive to improving product competitiveness.

The invention provides a preparation method of a solid electrolyte membrane. The preparation method of the solid electrolyte membrane comprises the following steps: crushing and screening electrolyte raw materials to obtain electrolyte particles; dissolving the electrolyte particles into a solvent, and uniformly mixing to obtain electrolyte slurry; carrying out refining treatment on the electrolyte slurry to obtain refined powder; and carrying out rolling treatment on the refined powder to obtain the solid electrolyte membrane. According to the preparation method of the solid electrolyte membrane, the preparation process is simplified, the production cost is reduced, and the production efficiency is improved. The electrolyte slurry is refined by optimizing the process conditions for preparing the electrolyte powder, so that the ionic conduction performance and the stability of the electrolyte membrane are ensured; and meanwhile, the preparation process is green and environment-friendly and has huge industrial application potential.

The utility model discloses a geological sample grinding and screening integrated equipment relates to geological sample detection technical field. Including work table, the work table top central part is provided with grinding mechanism, and grinding mechanism contains jar body, and the connection between jar body and work table, the jar body bottom central rotation is connected with rotating shaft, and rotating shaft outer wall fixedly connected with a plurality of equidistance connecting plates, and the one side of connecting plate rotatable connection has a plurality of equidistance grinding block, and the one side of connecting plate rotatable connection has first filter plate. The utility model discloses through the setting of grinding mechanism and filter mechanism, in the use process, first geological sample passes into the jar body through the feed pipe, then motor drive rotating shaft rotation drives connecting plate and grinding block rotation, and the sample on first filter plate is ground, and the particle size is smaller and enters the next layer and continues to grind, and the device can effectively reduce the grinding length, and improve the work efficiency through multistage grinding.

The utility model discloses a micron-sized resin homogenizer which comprises a bottom plate, a power motor and a plunger pump driving device shell are fixedly connected to the upper side of the bottom plate, a plunger pump is fixedly connected to the front side of the plunger pump driving device shell, a crushing device is fixedly connected to the left side of the plunger pump, the plunger pump comprises a plunger pump main body, and a channel is formed in the plunger pump main body; the crushing device comprises a first crushing body, a second crushing body and a third crushing body, a crushing pipeline is arranged in the first crushing body, a first adjusting column is slidably connected to the upper side of the first crushing body, a second adjusting column is slidably connected to the left side of the second crushing body, a micro-gap crushing pipe is fixedly connected to the bottom in the third crushing body, and a fixing shaft is mounted on the upper side of the third crushing body. The lower end of the fixing shaft is fixedly connected with a valve plug, and a plurality of micro-gap holes are evenly formed in the periphery of the micro-gap crushing pipe. Through the structure, the problem that the homogenizing effect is not ideal when the homogenizer treats high-viscosity and high-concentration fluid is solved.

The present application belongs to the technical field of optical film opening agent, and particularly relates to a preparation method of silica opening agent for optical film, which comprises the following steps: S1, keeping the temperature of a reaction kettle A at 200-300 DEG C and the pressure at 0.3-1.0 Mpa, simultaneously injecting a water glass solution W1 and sulfuric acid F1 into the reaction kettle A, and keeping the pH at 0.5-2.0 to form a silica sol; S2, transferring the silica sol to a reaction kettle B, keeping the temperature at 15-25 DEG C, simultaneously emulsifying and dispersing, and adjusting the pH to 10-12, then simultaneously adding a water glass solution W2 and sulfuric acid F2 into the reaction kettle B, after the addition is completed, aging at 80-100 DEG C, adjusting the pH to 3.0-5.0, and forming a silica precipitate through aging; S3, washing the precipitate and then wet grinding; and S4, spray drying the slurry to obtain the silica. The silica prepared by the method has a large pore volume, a small particle size and a low conductivity, has good opening property and transparency in the field of optical film, and has been successfully applied in the field of optical film.

The invention discloses a blue charcoal production system for reducing carbon emissions, and also discloses a blue charcoal production method for reducing carbon emissions. The advantages are: the effective gas components in the coal gas can be greatly improved, thereby improving the quality of the coal gas, making it meet the process standards of chemical raw gas, and improving its economic value; the reaction temperature in the coking furnace can be controlled within a certain range, and a blue charcoal product without coke can be obtained, which can be used in industries such as ferroalloys, calcium carbide, and synthetic ammonia, and most of the volatiles can be volatilized to increase the gas production of the coal gas; by adding CO2, the combustion parts of the coking furnace and the gas turbine can be protected to avoid damage to the combustion parts caused by too high reaction temperature; the nitrogen oxide content in the flue gas generated by the gas turbine can be used to prepare food-grade liquid carbon dioxide or be sent to the calcium carbide position for production as an inert gas protection gas; there is no need to discharge CO2, so the purpose of reducing carbon emissions is achieved, which is in line with the green and low-carbon production concept.

The utility model relates to the technical field of broken screening machine, and disclose a kind of broken screening machine of internal circulation, solve the existing broken screening machine without the ability of internal circulation, leading to material cannot be broken by multiple circulation, leading to the particle size of material crushing does not meet the requirement, its use effect is not good, it includes device main body, the bottom four corners of device main body are fixedly installed with support leg, one side of device main body is fixedly installed with support frame, one side of support frame is fixedly installed with servo motor, one side in device main body is equipped with broken plate, the upper portion of broken plate is rotatably installed with axle rod, and one side of broken plate is rotatably connected with the inside of one side of device main body by hinged link, and the lower portion of one side of broken plate is rotatably installed with spring rod;The broken screening machine has the ability of internal circulation crushing, can realize the multiple circulation crushing of material, ensure that the particle size of material crushing meets the requirement, has very good use effect.