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7503 results about "Ball mill" patented technology

A ball mill is a type of grinder used to grind, blend and sometimes for mixing of materials for use in mineral dressing processes, paints, pyrotechnics, ceramics and selective laser sintering. It works on the principle of impact and attrition: size reduction is done by impact as the balls drop from near the top of the shell.

Aquosity bi-component polyurethane coloured paint and method of manufacturing the same

The invention discloses a two-component waterborne polyurethane colored paint and the preparation method. The components of the paint are 5 to 15 water, 0.2 to 0.5 dispersant, 0.1 to 0.3 antifoamer, 0.1 to 0.3 wetting agent, 3 to 25 paints, 0 to 50 fillers, 10 to 80 film forming resins, 0 to 5 film forming additives, 0.1 to 0.3 disinfectant, 0.1 to 0.3 antiflash rust agent, 0.5 to 2 thickeners, 1 to 20 hydrophilically-modified polyisocyanate. The preparation method is that water, dispersant, antifoamer, wetting agent, paints and fillers are dispersed evenly by a sand mill, a ball mill or a high-speed stirrer after stirring, and are added with film forming resins, film forming additives, disinfectant, antiflash rust agent and thickeners to gain the product-component A. The hydrophilically-modified polyisocyanate is component B. The component A and component B are mixed uniformly when using. The invention is characterized in that the invention does not adopt organic solvents, does not contain toxic paints and has no harm on the human body and environment, and the properties can reach the solvent two-component polyurethane paint, which can be produced to the primer, intermediate coat and finishing coat, and can be applied in the surface of the wooden ware, cement and metals.
Owner:GUILIN UNIVERSITY OF TECHNOLOGY

Manual thermit welding electrode and preparation and using methods thereof

The invention discloses a manual thermit welding electrode and preparation and using method thereof which belong to the technical field of welding. A welding compound of the welding electrode comprises a thermit, a slag forming constituent and an alloying agent. Raw materials are weighed according to the proportion and arranged in a ball mill, a grinding ball and a milling medium are added, and the welding compound is obtained by drying after wet grinding; the welding compound is filled in a cylinder which is made of paper, a lead wire is arranged at one end of the cylinder, and the other end is sealed by a plastic plug, thereby forming the thermit welding electrode; the welding electrode is arranged in a sleeve which is made of paper and sealed for preservation. When in use, the sleeve is fixed on the plug at the back end of the welding electrode, the sleeve is held by a hand, and the lead wire at the front end of the welding electrode is ignited, and then the manual welding or cutting operation can be carried out. The welding electrode is small, lightweight and portable, the welding and the cutting operations are simple, rapid and safe, the welding and the cutting operations can be carried out anytime and anywhere, and the welding electrode can be applied in the welding and the cutting of steels, stainless steels or copper alloy materials.
Owner:TSINGHUA UNIV

Bidirectional tosh grinding ultra-fine crashing objects and its method

The present invention discloses a bidirectional-rotating ball-milling ultra-fine crushing device and the method thereof. The device is arranged with a jacket which is provided with cooling water; a closed material storing warehouse which closes the feeding/discharging material opening is arranged at the lower end of the barrel body; a vacuum pumping valve which is connected with the vacuum pumping device is arranged at random feeding/discharging cover plate on the barrel body; and an inner lining is arranged at the inner surface of the barrel body. The bidirectional-rotating ball-milling ultra-fine crushing method is doing vacuum pumping to the inner side of the barrel body and actuating the transmission device to do ultra-fine crushing when the raw material above 80 mu is added into the barrel body, wherein the rotary speed of the barrel is 40 to 70 rotation/minute and the rotary speed of the inner rotating axle is 20 to 40 rotation/minute; the mass of the grinding ball gradation phi between 5 to 10mm accounts for 35% to 55% of the total grinding ball mass, phi between 10 to 20mm accounts for 25% to 35% of the total grinding ball mass and the phi between 20 to 30mm accounts for 20% to 35% of the total grinding ball mass; and the mass ratio of the material ball is 1:4 to 1:15. The invention has the advantages of short producing time, low energy consumption and reduced producing cost, and the invention overcomes the fine particle problems of easy aggregation to block and fusing-aggregation, etc.
Owner:NANJING UNIV OF SCI & TECH

Formula and method for manufacturing ceramic tile blank bodies and glazed tiles by utilizing polished waste residues

The invention discloses a formula and a method for manufacturing ceramic tile blank bodies by utilizing polished waste residues. The formula adopts ingredients by weight portions: porcelain clays account for 18 to 40 parts, clays account for 20 to 30 parts, limestone grains account for 1 to 10 parts, wollastonite grains account for 3 to 15 parts, glazed tile sludge residues account for 3 to 10 parts, ceramic polished waste residues account for 15 to 45 parts, soluble glass accounts for 1 to 2 parts, thinners account for 0.15 to 0.4 parts, sodium tripolyphosphate accounts for 0.05 to 0.2 parts, and a proper amount of water is adopted. A manufacturing method of the ceramic tile blank bodies comprises the steps as follows: a. raw materials are put in a ball grinder for ball milling after being blended so as to form sizing agents with proper fineness and screen tailings through milling, and the sizing agents are processed through deferrization, sieving and spray drying so as to form powders; and b. the powders are put in a die cavity of a press forming machine to form waterish blanks through pressing, the waterish blanks are dried in a drying kiln, the dried waterish blanks are applied with base pulp and then enter a biscuit firing kiln, biscuit firing is carried out under the temperature ranging from 1080 to 1160 DEG C, heat preservation is carried out in an area with the temperature ranging from 1040 to 1060 DEG C, the sintering time of the area is prolonged, and the sintering process for oxidizing atmosphere can be enhanced at the same time so as to obtain the ceramic tile blank bodies.
Owner:GUANGDONG WINTO CERAMICS +1

Preparation method for silicon carbide ceramic tube or rod

The invention relates to a preparation method for a silicon carbide ceramic tube or rod. An extrusion moulding method is adopted to form a blank body; a normal pressure sintering method is adopted for sintering; and submicron level silicon carbide powder and additives are taken as main raw materials. The preparation method comprises the following steps: 1) carrying out ball milling on the main raw materials by a dry method, adding water, a dispersant, a plasticizer, a lubricant and a liquid state binder, and then carrying out ball milling by a wet method; 2) adopting a spray granulation process to granulate silicon carbide slurry; 3) extruding the blank body by a one-shot direct extrusion moulding method after vacuum pug, corrosion, and vacuum pug; 4) drying the molded blank body by a stage drying mechanism; and 5) placing the blank body of the silicon carbide ceramic tube or rod in a vacuum furnace and carrying out sintering for two times by taking argon gas as protective gas. The high temperature resisting strength and the corrosion resistance of the silicon carbide ceramic tube or rod prepared by the method are both better than those of a reactive sintered product. Compared with a hot press sintering method, the method has lower limit on the product shape and size, and lower cost. The method is suitable for the industrialized production.
Owner:宁波欧翔精细陶瓷技术有限公司

Sand consolidation and water plugging profile control agent made by oil sand

The invention relates to a sand-consolidating and water-blocking profile modifying agent for oil sludge sand. The profile modifying agent is prepared by mixing the following raw materials: oil sludge sand, 10 to 90 portions of consolidation agent or adding modifier, a consolidation accelerant or a consolidation retardant; the oil sludge sand is subjected to ball milling through a ball mill; part of large crude oil is separated off so as to reach the requirement of granularity of the profile control agent; therefore, the oil sludge sand with granularity of less than 200 meshes is less than 70 percent of the total mass of the oil sludge sand; and the consolidation agent is selected from one or a mixture of one or more of cement or cement clinker, steel slag, slag, pulverized coal ash, gypsum, lime and magnesia. In application, the profile control agent is prepared to a 1 to 20 percent suspension solution; and the suspension solution is injected into a deep part of stratum of an oilfield through profile modification equipment. The profile modifying agent fully utilizes mass oil sludge sand produced in the production process of various oilfields, realizes the aim of emission reduction; and the oil sludge sand is recycled and is used as the sand-consolidating and water-blocking profile modifying agent, thereby achieving the aim of consolidating sand, blocking water and improving extraction yield.
Owner:SHANDONG UNIV

Preparation method of carbon nano tube-reinforced aluminum base composite material

ActiveCN103614672AAvoid the disadvantages of difficult sinteringWell mixedCarbon nanotubeWear resistance
The invention discloses a preparation method of a carbon nano tube-reinforced aluminum base composite material. The preparation method comprises the following steps: (1), uniformly dispersing carbon nano tubes into a dispersant which has chemical inertness on pure aluminum powder or aluminum alloy powder to obtain carbon nano tube dispersion liquid; (2), uniformly mixing the carbon nano tube dispersion liquid with the pure aluminum powder or the aluminum alloy powder, and drying to remove the dispersant to obtain a material mixture; (3), carrying out ball-milling onto the material mixture under protection of inert gases; and (4), carrying out cold pressing, normal-pressure sintering, hot-pressing and densifying under an atmospheric environment and hot-extrusion forming onto the ball-milled material mixture in sequence to obtain the carbon nano tube-reinforced aluminum base composite material. The preparation method disclosed by the invention further can reinforce the aluminum base body by utilizing co-action of base body processing and hardening, crystalline grain fining and reinforcing while bringing the excellent mechanical performances of the carbon nano tubes into play to reinforce the aluminum base body, so that tensile strength and wear resistance of the composite material are greatly improved; moreover, the carbon nano tube-reinforced aluminum base composite material with excellent performances can be industrially produced on a large scale.
Owner:STATE GRID CORP OF CHINA +3

Rare-earth doping modified lithium ion battery ternary positive electrode material and preparation method thereof

The invention relates to a rare-earth doping modified lithium ion battery ternary positive electrode material and a preparation method of the rare-earth doping modified lithium ion battery ternary positive electrode material. The chemical general formula of the material is as follows: LiNiaCo<1-a-b>MnbRxO2/M, wherein a is more than 0 and less than 1, b is more than 0 and less than 1, (1-a-b) is more than 0 and less than 1, x is more than 0.005 and less than 0.1, R is one or more of rare-earth lanthanum, cerium, praseodymium and samarium, and M is a composite cladding layer of oxide of aluminum, titanium or magnesium and carbon. The soluble metal nickel salt, cobalt salt, manganese salt and rare-earth compound are mixed to prepare a mixed salt solution, the mixed salt solution is reacted with a mixed alkaline solution prepared by mixing NaOH and ammonium hydroxide, after the reaction solution is filtered, washed and dried, the obtained product is uniformly mixed with lithium salt powder to be ball milled, then the mixture is calcined at the high temperature and coated with the composite cladding layer of the aluminum, titanium or magnesium oxide and carbon, and finally the calcined mixture is calcined at a constant temperature to obtain the rare-earth doping modified lithium ion battery ternary positive electrode material. After doping the rare earth, the metal oxide and carbon composite cladding layer, which are cheap and easy to obtain, are adopted, so that the cycling performance and the rate performance can be improved, and the charging-discharging efficiency of the material also can be improved.
Owner:ZHEJIANG MEIDARUI NEW MATERIAL TECH CO LTD

Foamed ceramics energy saving and heat preservation decorative wall brick and manufacture method thereof

The invention discloses a foamed ceramics energy saving and heat preservation decorative wall brick and a manufacture method thereof, including the steps of conducting ball milling on 15-65 percent wt of industrial residues, 10-45 percent wt of plastic clay, 15-60 percent wt of solvent, 10-45 percent wt of pore-forming agent with the fineness being 1-100mum and proper amount of water to form slurry; spray drying or dehydration and clay preparation, and forming powder material or clay segment through staleness; and implementing pressure forming to make billet which is burned under heat preservation at temperature of 1140-1240 DEG C to finally form the foamed ceramics wall brick. The wall brick can be used not only for the heat preservation and decoration of external walls, but also for indoor heat preservation and decoration, and the external wall and the indoor space can realize the organic combination of uniform heat preservation and decoration, which agrees with the development direction of heat preservation material industry of external walls. The wall brick has the advantages of: I. high temperature resistance, acid and alkali-resistance, good chemical stability, no ageing, strong durability, long service life, no generation of heat channel and good adhesive fixity; and II. difficult water seepage and crack, strong anti-corrosion capacity, uneasy deformation and damage, simplification of mounting, laying and sticking procedures, convenience for construction, relief of labor intensity and decrease of material consumption quantity.
Owner:吴汉阳

High-performance lithium ion battery cathode material and preparation method thereof

The invention relates to a lithium ion battery cathode material LiNixCoyM1-x-yO2 prepared from micron-sized single crystal particles and a preparation method thereof, wherein x is greater than 0 and is not more than 0.8, y is greater than 0 and is not more than 0.5, and M is one or two of Li, Mn, Al and Mg. The invention is characterized in that (1) composite oxide or hydroxide of transition metal nickel, transition metal cobalt and modified metal M is used as a raw material, the composite oxide or hydroxide is porous aggregate comprising nanocrystals, the average size of the aggregate is 2-50 micrometers, and the specific surface area of the aggregate is greater than 15m<2>/g (measured by BET method); (2) the composite metal oxide or hydroxide and lithium salts are milled in a ball mill, the micron-sized composite metal oxide or hydroxide is converted into nanocrystal particles to obtain a nano-sized mixed precursor of the composite metal oxide or hydroxide and the lithium salts, and the mixed precursor is sintered at uniform temperature to obtain the required lithium ion battery cathode material; and (3) the prepared lithium ion battery cathode material LiNixCoyM1-x-yO2 is basically prepared from micron-sized single crystal particles, and the average size of the single crystal particles is 2-20 micrometers. In addition, the product has excellent physical and electrochemical properties, such as ultra-low specific surface area, reasonable particle size distribution, good electrode processing properties, ultra-long cycle life, excellent rate capability, obvious high and low temperature cycling and storing properties and excellent safety; and the product can be widely used as a high-performance lithium ion battery cathode material. The invention provides the high-performance lithium ion battery cathode material and the preparation method thereof.
Owner:QINGDAO LNCM

Modified lithium ion battery ternary positive electrode material and preparation method thereof

The invention relates to a modified lithium ion battery ternary positive electrode material and a preparation method of the modified lithium ion battery ternary positive electrode material. The chemical generation formula of the material is as follows: LiNiaCo<1-a-b>MnbBxO2/TiO2, wherein a is more than 0 and less than 1, b is more than 0 and less than 1, (1-a-b) is more than 0 and less than 1, x is more than 0.005 and less than 0.1, and the TiO2 is a cladding layer. The soluble nickel salt, cobalt salt and manganese salt are prepared into a mixed salt solution, the mixed salt solution is reacted with a mixed alkaline solution prepared by mixing the NaOH and ammonium hydroxide, after being filtered, washed and dried, the reaction product is mixed with a boronic compound and roasted for 4h to 12h at the temperature of 300 to 800 DEG C under an air atmosphere, then the roasted product is ball milled with the lithium salt to be uniformly mixed together, the mixture is coated with titanium dioxide after being calcined at the high temperature to obtain the modified lithium ion battery ternary positive electrode material. The prepared boron doping modified ternary positive electrode material is high in specific capacity and good in cycling performance.
Owner:ZHEJIANG MEIDARUI NEW MATERIAL TECH CO LTD

Powder metallurgy preparation method of carbon nanotube reinforced aluminum alloy composite material

ActiveCN103789564ARapid precipitation strengtheningReliable and efficient processMicro nanoThermal deformation
The invention provides a powder metallurgy preparation method of a carbon nanotube reinforced aluminum alloy composite material. The method comprises the following steps: pre-preparing micro-nano flake powder of an alloying component, subsequently ball-milling the powder with a carbon nanotube and spherical pure aluminum powder to prepare flake composite powder, and further performing densifying, sintering, thermal deformation processing and thermal treatment to achieve alloying so as to finally obtain the carbon nanotube reinforced aluminum alloy composite material. Uniform compounding of the matrix aluminum powder, the carbon nanotube and the alloying component can be achieved through limited ball-milling, and meanwhile dangerous elements or uneasy grinding elements such as magnesium and silicon which are high in activity and likely to combust and explode are avoided by adopting the stable and easily ground pre-alloying aluminum powder, so that the security and the reliability are improved; in addition, because of large interlayer boundary and small layer thickness distance, the flake structure is beneficial for uniformly dispersing the alloying component and forming refined dispersed separated phase. The method is beneficial for bringing the effects of composite reinforcement of carbon nanotubes and alloy reinforcement into play to the maximum extent, is energy-saving and time-saving, and is safe and feasible.
Owner:SHANGHAI JIAO TONG UNIV

Method for preparing injection-molding nickel-base ODS (oxide dispersion strengthened) alloy

The invention provides a method for preparing a nickel-base ODS (oxide dispersion strengthened) alloy by injection molding, belonging to the technical field of injection molding of powder. The method comprises the following steps: carrying out high-energy ball milling on the raw material powder so that Y2O3 particles are uniformly dispersed in a nickel substrate, refining mechanical alloy powder by jet milling, and carrying out plasma nodularization on the powder which is refined by jet milling; evenly mixing and smelting the powder, which is refined by jet milling and plasma nodularization, and adhesive to obtain a uniform feed material; and carrying out injection molding, two-step degreasing and sintering on the feed material to obtain a sintered blank of which the density is 93-96%, carrying out hot isostatic compaction on the sintered blank so that the sintered blank is completely compact, and finally, carrying solution heat treatment and aging heat treatment to obtain the injection-molding nickel-base ODS alloy. The nickel-base ODS alloy can be prepared into high-precision parts in complex shapes, thereby solving the problem of difficulty in molding of nickel-base ODS alloy. The gamma' phase and the oxide strengthening mechanism are combined to greatly enhance the high-temperature mechanical properties of the nickel-base ODS alloy.
Owner:UNIV OF SCI & TECH BEIJING

Method for recovering lead oxide by waste lead-acid storage battery

A method for recovering lead oxide by a waste lead-acid storage battery is disclosed. The waste lead-acid storage battery is crushed together with lead slime subsequent to acid cleaning, a grid plate and a filler comprising the lead slime are obtained by screening, the grid plate is fused-cast to an alloy ingot, the filler and the lead slime are ball-milled, and fine stuff is added with saturated oxalic acid solution for reaction at 25-65 DEG C and then for filtering and depositing; the deposition is then treated by excessive 30% nitric acid at the temperature of 40-45 DEG C for subsequent filtration and deposition, and the deposition is reacted with 4wt% sal volatile at the temperature of 25-65 DEG C for subsequent filtration and deposition; the deposition is added into recovered HNO3 to be dissolved at the temperature 40-45 DEG C until no bubble is generated, the filtered filtrate is added with 25% ammonia for reaction, filtration, washing and deposition to be neutral, and the lead oxide is obtained by drying and roasting. Recoverable nitramine and ammonium sulfate are recycled in all the filtrates in the technologies; thereby discharging no waste liquid. The utilization rate of raw material is 90.1-92.1%, the yield is 95.0-96.7%, and the content of PbO is 98.0-98.9%.
Owner:DALIAN WUHUATIANBAO TECH DEV

Soft sensing method for load parameter of ball mill

ActiveCN101776531AThe frequency band features are obviousObvious high frequency featuresSubsonic/sonic/ultrasonic wave measurementCurrent/voltage measurementLeast squares support vector machineEngineering
The invention relates to a soft sensing method for load parameters of a ball mill. The method is that a hardware supporting platform is used to obtain vibration signals, vibration sound signals and current signals of a ball mill cylinder to soft sense ball mill internal parameters (ratio of material to ball, pulp density and filling ratio) characterizing ball mill load. The method comprises the following steps that: the vibration, the vibration sound, the current data and the time-domain filtering of the ball mill cylinder are acquired, time frequency conversion is conducted to the vibration and the vibration sound data, kernel principal component analysis based nonlinear features of the sub band of the vibration and the vibration sound data in frequency domain are extracted, nonlinear features of the time domain current data are extracted, feature selection is conducted to the fused nonlinear feature data and a soft sensing model based on a least squares support vector machine is established. The soft sensing method of the invention has the advantages that the sensitivity is high, the sensed results are accurate, the practical value and the popularization prospect are very good, and the realization of the stability control, the optimization control, the energy saving and the consumption reduction of the grinding production process is facilitated.
Owner:NORTHEASTERN UNIV
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