381results about How to "Short mixing time" patented technology

Direct compressed solid pharmaceutical dosage forms containing:a) from about 40 to about 95% by weight acetaminophen;b) from about 1 to about 60% by weight of a direct compression vehicle comprising microcrystalline cellulose; andc) from about 0.01 to about 4.0% by weight of a pharmaceutically-acceptable lubricant are disclosed. The acetaminophen and direct compression vehicle are combined under high shear conditions which are sufficient to transform acetaminophen and direct compression vehicle into a homogenous granulate without degradation. In preferred aspects of the invention, the lubricant is also combined with the acetaminophen and direct compression vehicle under high shear conditions. Methods of preparing the directly compressed solid pharmaceutical dosage forms and methods of treatment with the dosage forms are also disclosed. The methods are particularly well suited for preparing directly compressed dosage forms containing high load (i.e., up to 80% or greater) amounts of acetaminophen based on the weight of the total tablet.

The invention belongs to the technical field of building materials and particularly relates to low-shrinkage, low-viscosity and ultrahigh strength concrete. Based on a single formula proportional dosage, the low-shrinkage, low-viscosity and ultrahigh strength concrete comprises the following components by weight: 250-300kg of cement, 120-180kg of microspheres, 90-120kg of mineral powder, 820-860kg of machine-made sand, 950-1000kg of gravels, 7-11kg of a water reducer and 115-125kg of water. The components are mixed with stirring for 1.5-2 minutes to obtain a concrete mixture. The concrete provided by the invention is less in binding material use, the total shrinkage percentage is less than (0.03-0.04per mill), the emptying time of an inverted slump cone is 5-10 seconds, the viscosity of mortar in same proportion is 20-28 Mp.s, the 28d compressive strength is 110-130MPa, and the 56d compressive strength is 120-135MPa. The concrete has the characteristics of being low in bonding material use, short in stirring time, excellent in working performance and low in comprehensive cost, and can be produced on a large scale and has a broad application prospect.

A process for measuring particle concentrations in a gas using an ejector for producing an essentially constant sample flow and for efficient mixing of the particle-containing sample and and essentially clean, ionized gas. The invention also relates to an apparatus implementing such process. The process and the apparatus can be utilized for example in measuring particle concentrations in an exhaust system of a combustion engine.

The invention discloses a stirred tank reactor and aims at improving a stirring turbine in the stirred tank reactor by using a four-layer combination stirring turbine. The stirring turbine comprises a first layer turbine, a second layer turbine, a third layer turbine and a fourth layer turbine which are arranged from the middle to the bottom of a stirring shaft sequentially. The first layer turbine is an upward axial flow turbine, the second layer turbine is a disk type turbine, the third layer turbine is an upward axial flow turbine, and the fourth layer turbine is a radial flow turbine. Radial circulation close to a liquid level, radial circulation close to a middle area of a stirred tank and radial circulation in a bottom area of the stirred tank are formed, so that circulation quantity inside the stirred tank is big and mixing time is short. Poor mixing area does not exist, and solid containing rate and gas containing rate are evenly distributed. A mass transfer condition of air and liquid is good, and single transfer efficiency is high. Entrainment quantity of sizing is greatly reduced, fouling of a heat exchanger is reduced, and service life is long. Operation cost is lowered, and production cost is saved.

The invention discloses an L-polylactide filler for injection and a preparation method thereof. Active ingredients of the filler are L-polylactide particles, honeycomb HA and a synergist, the honeycomb HA is obtained by alcohol precipitation and drying of a water solution formed by mixing sodium hyaluronate high in molecular weight and sodium hyaluronate low in molecular weight in an alkaline condition, and the synergist is mannitol or a mixture of mannitol and aloe polysaccharide with a mass ratio of 1:0.05-0.12. The filler is simple to prepare, shorter in re-suspension time, long in validity period and more convenient to use.

The invention discloses an asphalt recycling agent for hot recycling of asphalt on an asphalt road surface. The recycling agent comprises the following components by weight: 19-70% of an aromatic oil, 20-60% of heavy oil, 5-30% of liquid petroleum resin and 0.2-1% of a stabilizer. The invention also provides a preparation process of the asphalt recycling agent and a method for preparing recycled asphalt by use of the asphalt recycling agent. The recycling agent disclosed by the invention is good in recycling effect, easy for raw materials purchase, stable in quality, low in equipment investment, simple in processing steps, short in processing time of finished products, good in storage stability, stable in physicochemical property, and convenient for on-site operation, and is suitable for on-site hot recycling construction as a special recycling agent.

The present invention relates to a process for the manufacture of diisocyanates by phosgenation of the corresponding diamines in which the vaporous diamines, optionally rarefied with an inert gas or with the vapors of an inert solvent, and phosgene are heated separately to temperatures of about 200° C. to about 600° C. and mixed and reacted in a tube reactor characterized in that a number n≧2 of nozzles directed parallel to the axis of the tube reactor are arranged in the tube reactor, the diamine-containing stream being fed into the tube reactor through the n nozzles and the phosgene stream being fed into the tube reactor through the remaining free space.

The invention discloses a method for harmless treatment of arsenic sulfide slag, which comprises the following steps: adding water to arsenic sulfide slag at room temperature, mixing to obtain mixture I, adding sodium sulfide to react to obtain mixture II, and then Add oxidant to carry out oxidation reaction to obtain mixture III, then add iron salt or aluminum salt for reaction to obtain mixture IV, and then add cement. The invention has the advantages of being able to effectively reduce the arsenic leaching concentration of the arsenic sulfide slag, the treated arsenic sulfide slag meets the requirements for hazardous waste landfill, simple process flow, small volume increase, strong operability, short stirring time, and low consumption.

An oxidized polysilicate iron coagulating agent and its production are disclosed. The process is carried out by mixing activating silicic acid with low-polymerization degree with acid ferrous sulfate solution, adding into oxidant, additive and stabilizer, aging to obtain liquefied product or curing to obtain product. Its advantages include short period, better stability, simple process and good coagulating effect.

The invention discloses a preparation method of a flower-like tin dioxide and graphene composite material, belonging to the technical field of functional composite materials. According to the preparation method disclosed by the invention, the flower-like tin dioxide and graphene composite material with controllable morphology is prepared from graphene oxide, tin chloride pentahydrate and sodium hydroxide as raw materials by adopting the steps of mixed stirring, hydro-thermal synthesis, solid-liquid separation, cleaning and drying. The method disclosed by the invention has the advantages of simpleness, convenience for operation, lower production cost, no influence on the environment and convenience for popularization and application; and in the method, water is used as solvent and no surfactant is used. The flower-like tin dioxide and graphene composite material prepared by adopting the method can be widely applied to new energy source devices such as a lithium ion battery, a solar cell, a super capacitor and the like, or can be applied to the fields of catalyst carriers, information materials and the like.

The present invention relates to a cigarette smoking device having an electronic atomization function, including a cigarette holder and an electronic atomization component cooperatively assembled with one another, wherein the cigarette holder includes a cigarette holding cavity and an optional end cap for closing the open end of a shell; the electronic atomization component includes the shell and the following components located in the shell: a power supply, an airflow sensor switch and an atomizer provided with a central airflow channel; the cigarette holding cavity is in air communication with the central airflow channel of the atomizer; the cigarette smoking device further includes an airflow sensor switch air inlet penetrating the shell and/or the end cap of the cigarette holder. Also provided is a method for improving cigarette smoking quality, the method includes smoking after mainstream smoke generated by an end-lighting cigarette, dilution air and atomization vapor are mixed.

Cellfree adipose tissue extracts, implants including the same and methods for the preparation thereof. The extracts and implants are capable of inducing adipogenesis and angiogenesis and are, thus, useful in applications including soft tissue repair and engineering and angiogenesis induction, e.g., in wound healing, treatment of burn injuries and ischemic conditions.

The invention relates to a rare earth processing device and especially relates to an efficient rare earth extracting device for rare earth processing. The technical problem to be solved by the invention is to provide the efficient rare earth extracting device for rare earth processing, with capability of simultaneously stirring multi-batch materials, shorter stirring time and higher efficiency. In order to solve the technical problem, the efficient rare earth extracting device for rare earth processing, provided by the invention, comprises a base plate, a settling tank, a filter screen, a first funnel, a support plate, a first connecting rod, a first bearing base, stirring boxes, a second bearing base, a first rotating rod and a first gear, wherein the settling tank is arranged on a middle part on the upper side of the base plate in the manner of bolt connection, and the filter screen is arranged on the upper side in the settling tank in the manner of bolt connection. The efficient rare earth extracting device for rare earth processing can achieve the effects of capability of simultaneously stirring multi-batch materials, shorter stirring time and higher efficiency. A first guide sleeve and a first guide rail are adopted for loading a plurality of stirring boxes for stirring.

The invention relates to a method for preparation of an antioxidant composite coating on a carbon fiber surface. The antioxidant composite coating is an Al2O3-SiO2-TiO2 composite coating. The method is sol-gel method, which includes: composite sol preparation, carbon fiber surface activation treatment, coating, drying and heat treatment. The composite sol is prepared under room temperature, and the preparation process includes: firstly preparing a water-alcohol solution of tetraethyl orthosilicate and acetic acid into a mixed solution A, then pouring the mixed solution A into an alcohol solution of butyl titanate to prepare a mixed solution B, then under stirring, pouring an alcohol solution of aluminum nitrate nonahydrate into the mixed solution B to prepare a mixed solution C, finally adding an alcohol-water mixed solvent into the mixed solution C, and performing stirring to obtain the composite sol. With the ternary composite sol prepared by the method provided by the invention, a uniform and complete antioxidant coating with good adhesion and thickness within 3 micrometers can be prepared on the carbon fiber surface.

A method of producing a mixture comprises providing, in a container, at least a first component of the mixture at a first temperature; adding a remaining component of the mixture to said at least a first component; subjecting the container to a rotational motion about a first axis in a first direction while rotating the container about a second axis in a second direction to effect a mixing; wherein the first temperature is lower than the temperature of the mixture at the end of the mixing.

The invention relates to the field of power lithium ion batteries, in particular to a preparation method of a lithium ion power battery cathode. The preparation method comprises the following steps: first preparing sodium carboxymethylcellulose glue solution in a number 1 stirring machine, adding conducting carbon black and dry graphite powder in a number 2 stirring machine, uniformly mixing, and then adding the sodium carboxymethylcellulose glue solution in the number 1 stirring machine into the number 2 stirring machine; and adding little alcohol, vacuumizing, defoaming, adding styrene-butadiene latex, mixing, finally vacuum defoaming, and obtaining the lithium ion power battery cathode material. By improving a stirring scheme, the stirring time of the cathode slurry is shortened, the moisturizing coating performance of the cathode slurry is improved, and a bubble-free purpose is achieved.

The invention discloses silicon carbide ceramic paste for photocuring and a preparation method thereof. The paste is prepared by mixing SiC mixed powder, a dispersing agent, a monomer, a compatilizerand a photoinitiator, wherein the surface of the SiC mixed powder is coated with a SiO2 layer, so that the refractive index difference between the final paste and light-cured resin is reduced, and then printing efficiency is further improved. SiO2 can improve the solid phase content of the whole slurry, so that the sintering density of sintered ceramic and the mechanical property of finally formedceramic can be improved during subsequent ceramic sintering. Through addition of the dispersing agent into the slurry, the agglomeration phenomenon of the slurry can be reduced, the dispersity is improved, and the solid phase content of the whole slurry can be increased. Verification finds that the solid phase content in the paste can finally reach 40%-60%.

The invention discloses an asphalt mixture blending method which comprises the following steps of (1) dividing mineral aggregates into coarse aggregates, fine aggregates and mineral powder; (2) determining the mass ratios of the coarse aggregates, the fine aggregates and the mineral powder according to the mineral aggregate gradation requirements, and determining the mass ratios of asphalt and the mineral aggregates according to the variety of the asphalt; (3) weighing the coarse aggregates, the fine aggregates and the mineral powder according to the total mass of to-be-mixed mineral aggregates, and separately arranging the coarse aggregates, the fine aggregates and the mineral powder; (4) heating the weighed coarse aggregates, fine aggregates and mineral powder to the operating temperature; and (5) adding the heated coarse aggregates and fine aggregates to a blending device for blending, completely coating the coarse aggregates with the asphalt and then adding the fine aggregates for further blending, adding the mineral powder after the fine aggregates are completely coated with the asphalt, and blending evenly to obtain a finished product asphalt mixture. The problems that asphalt oil films coating the surfaces of the coarse aggregates, the fine aggregates and the mineral powder are not uniform and the performance of the asphalt mixture is affected in the prior art are solved; and the uniform oil films can be formed on the surfaces of the coarse aggregates, the fine aggregates and the mineral powder, so that the quality of the asphalt mixture is improved.

The invention discloses a single-shaft mortar and high-viscosity fluid stirrer for an axial turbulent flow pattern multi-wire cutting machine, comprising a stirring shaft, a stirring assembly and a driving mechanism, wherein the stirring assembly comprises impellers and short flow diversion tubes, the impellers are used for driving a material to move up or down in an axial and spiral mode along the inner wall of a pot body of a stirring pot, the short flow diversion tubes are used for restricting the material flow direction to an axial movement along the axis of the stirring shaft when the material moves up or down in the axial and spiral mode, the impellers and the short flow division tubes are assembled into the stirring assembly which drives the material needed to be mixed and stirred to do an axial turbulent flow motion during stirring, the impellers are coaxially installed at the bottom end of the stirring shaft, the short flow division tubes are coaxially and fixedly sleeved at the outer sides of the impellers, and the stirring speed of the stirring shaft is 600-1500rmp. The single-shaft mortar and high-viscosity fluid stirrer has the advantages of simplicity in structure, high stirring capacity, small shearing force, high dispersing power and high effect, and can be used for solving the problem that silicon carbide is broken due to the shearing force during the high-speed stirring of various traditional stirrers. Moreover, a stuck phenomenon is difficult to generate.