43results about How to "Improve powder quality" patented technology

Olefin polymerization catalysts for producing polyolefin resins which can dispense with a melt-kneading step necessitating great energy or a substitute addition step therefor and to which small amounts of antioxidants have been effectively added; and a process for the production of the catalysts. Specifically, a catalyst for olefin polymerization characterized by being prepared by conducting prepolymerization in the presence of [I] a solid catalyst for olefin polymerization having a mean particle diameter of 10 to 200 μm, [II] an antioxidant for resins, and [III] an olefin; and a catalyst for olefin polymerization characterized by containing [IV] an organoaluminum compound in addition to the components [I] to [III].

A superfine airflow pulverizer system with inertial gas shielded for pulverizing the material to be oxidized easily is composed of airflow system and pulverizing system. Said airflow system consists of protective gas soorce, gas tank, compressor, fluidized-bed airflow pulverizer, cyclone separator, and dust capture. Said pulverizing system comprises sealed feeder, transition cabin, fluidized-bed airflow pulverzer, cyclone separator, and powder collector.

The invention relates to the technical field of alloy production, particularly a powder alloy and a production technique thereof. The powder alloy comprises 0.04-0.09% of C, 12-14% of Cr, 7-9% of Co, 3.3-3.7% of W, 3.3-3.7% of Mo, 2.3-3.7% of Al, 3.3-2.7% of Ti, 3.3-3.7% of Nb, 0.006-0.015% of B, 0.03-0.07% of Zr and the balance of Ni. The powder alloy is a highly-alloyed r'-phase precipitation-reinforced nickel-base high-temperature alloy, wherein the r' volume content is 50-55%, and the r' formed element content (atomic) is 28%. The powder alloy is a turbine disk material at the highest strength level under the operating condition of 650 DEG C at present. The powder alloy not only can be used for high/low-pressure turbine disks, but also can be used for gas compressor disks, turbine shafts, turbine baffle rings, high-temperature sealing parts and other high-temperature parts. The powder alloy is prepared by a plasma rotating electrode powder manufacturing apparatus, and the powder quality is greatly enhanced.

The invention relates to the technical field of lithium battery raw material machining equipment, in particular to an automatic battery powder filling system. The automatic battery powder filling system comprises a controller, a conveying part and a filling part, wherein the filling part comprises a feeding pipeline, a storage bin and material tank, a material level detector and a spiral feeding device are disposed in the material tank, the material tank is provided with a feeding inlet and a discharging outlet, the feeding pipeline is communicated with the storage bin and the feeding inlet of the material tank, and the feeding pipeline is provided with a feeding pump; the conveying part comprises a conveying belt mechanism, a loading station is disposed on one side of the conveying belt mechanism, the loading station is located below the discharging outlet, and a material pushing air cylinder and a position sensor are disposed at a position, corresponding to the loading station, of the conveying belt mechanism. The automatic battery powder filling system has the advantages that the system is high in automation level, production efficiency and product quality are increased, raw material waste is reduced, production personnel is reduced, work intensity is lowered, and the work environment is improved.

The invention discloses an electric wire and cable talcum powder coating machine which comprises a machine body. A transmission wheel is connected with a driving wheel through a transmission belt, the driving wheel is connected with a stirring motor through a connecting shaft, a high-pressure air blower is arranged at the bottom of the machine body and is connected with a high-pressure motor, and a second air inlet and a second air outlet are formed in the high-pressure air blower. The electric wire and cable talcum powder coating machine does not cause pollution to a working environment, electric wires and cables are evenly coated with powder at 360 degrees during powder coating, the powder coating quality is better, defective products are not produced in the production process due to even powder coating, accordingly the costs of enterprises are reduced, a production environmental is dust-free, the powder coating thickness is adjustable and controllable during production, an application range is wide, and talcum powder can be heated, dehumidified and dried to make the electric wires and cables dry and smooth. When powder attaches to sheaths after powder coating, manual control can be performed, the production efficiency is high, no talcum powder is leaked in the production process, no air pollution is caused to a production environment, and the electric wire and cable talcum powder coating machine is easy to operate, high in automation degree, compact in structure and small in occupied area.

The invention provides a method for preparing zirconia from solid waste zirconium. The method comprises the following steps: (1) performing alkalization: after solid waste zirconium are smashed and ground, alkali metal hydroxide is added for roasting, and zirconium salt is obtained; (2) performing extraction and concentration: the zirconium salt is washed with water for impurity removal, subjectedto acidic washing transformation and filtered to remove slag, a transformed solution is obtained and subjected to primary reaction with sulfuric acid, a first precipitate is obtained and subjected tosecondary reaction with sulfuric acid for crystallization and separation of zirconium sulfate, and a zirconium sulfate solution being 0.25-3 mol/L is prepared from zirconium sulfate for standby application; (3) adding dropwise a precipitant to the zirconium sulfate solution for reaction to obtain a second precipitate; (4) washing, drying and calcining the second precipitate to obtain zirconia. The method has the advantages of low equipment requirement, simple process and high powder quality, and recycling of solid waste zirconium is realized.

The wedge insert for a powder tube extension of a powder spray gun operable at high voltage comprises a sleeve, wherein the sleeve has a radial web, which is wedge-shaped on the upstream side. In addition, an axially running channel, into which a guide tube, which guides an electrode with a high voltage, can be inserted, is provided in the web.

The invention belongs to the technical field of preparation of formula granules, and particularly relates to rosa laevigata formula granules as well as a preparation method and quality detection method thereof, in particular to the rosa laevigata formula granules as well as the preparation method thereof, a characteristic spectrum of the Rosa laevigata formula granules and a construction method of the characteristic spectrum, and a method for determining the content of catechin in the rosa laevigata formula granules. According to the method provided by the invention, the powder collecting rate of rosa laevigata spray-dried powder can be ensured to be 80% or above, meanwhile, the main active ingredient namely catechin in rosa laevigata decoction pieces can be fully extracted, and the loss is small in the concentrating and drying links, so that the quality of the rosa laevigata formula granules is ensured. The wall sticking phenomenon in the spraying process is greatly improved by controlling the air inlet temperature of spray drying, and the problems that the spray-dried powder is difficult to dry, powder is difficult to collect and wall sticking is serious due to the fact that the rosa laevigata is high in sugar content and low in softening point are solved.

The invention discloses a powder extruding device for medical tablets, which comprises a casing, a driving device, a first extrusion roller, a second extrusion roller, a rib, a scraper and a medicine feeding funnel, and a second extrusion funnel is arranged inside the casing. One extruding roller and the second extruding roller, the first extruding roller and the second extruding roller are arranged in parallel, and the described first extruding roller and the second extruding roller are arranged in parallel; In the process of being involved, the cutting edge between the adjacent ribs cuts the tablet, and the drug is squeezed again by the ribs and the first extrusion roller or the second extrusion roller, so that the tablet is powdered and granulated. Uniformity, improving the powder quality, the scraper scrapes off the powder adhered to the ribs, the first extrusion roller and the second extrusion roller, and finally the powder enters the frame, and the powder particles that do not meet the particle size requirements are filtered Net interception, the invention has simple structure, low manufacturing cost, good powder extrusion effect, and has good practical effects.

The invention relates to a drug smashing device. The drug smashing device comprises a shell, a beating bar, a driving rod, a first cam and a second cam. The first cam and the second cam are oppositelylocated above and below the rear end of the driving rod separately. The first cam and the second cam press the rear end of the driving rod downwards or eject the rear end of the driving rod upwards alternately under the driving action of a motor, so that the front portion of the driving rod swings up and down continuously. Therefore, a hammer swings up and down around a first rotating pin so thatthe inside of a beating cavity can be beaten up and down continuously. The drug smashing device replaces manual work to smash drugs, and drug smashing work efficiency is improved. In addition, the drugs in the beating cavity are moved to the two sides from the middle position and then are moved to the middle position from the two sides, cyclic motion is made continuously, the hammer can beat thedrugs more evenly, and the quality of obtained drug powder is made higher.

Polypropylene composition having a melting temperature Tm of 135° C. to 140° C. (DSC according to ISO 11357/part 3), —an MFR₂ of 0.05 to 0.50 g/10 min (2.16 kg, 230° C., IS01133), a XS according to IS016152 of 0.2 to 2.5 wt.-%, and a molecular weight distribution Mw/Mn of at least 2.8 and less than 6.0, wherein Mn is the number average molecular weight and Mw is the weight average molecular weight both being determined by Gel Permeation Chromatography (GPC) according to ISO 16014-4:2003, and ASTM D 6474-99, whereby the polypropylene composition comprises units derived from 1-hexene in an amount of 1.80 wt.-% to 5.0 wt.-%.

The invention discloses a powder making device for feed machining and production, and particularly relates to the technical field of feed machining and production. The powder making device comprises abox body, wherein two feeding hoppers are fixedly connected to the top of the box body, the two feeding hoppers are distributed symmetrically, a first motor is arranged on the inner side of the two feeding hoppers, an output shaft of the first motor penetrates through the top of the box body and extends into the box body, a threaded rod is fixedly connected to the output shaft of the first motor,and a supporting block is fixedly connected to the bottom end of the threaded rod. According to the powder making device, by arranging the two second motors, two rotating shafts and a plurality of blades arranged on the rotating shaft, feed input into the box body can be cut first, and then by arranging the first motor, the threaded rod, the supporting block, a grinding head and a grinding ring,and the preliminary cut and crushed feed can be further ground and crushed; the powder making device is simple in structure, the operation is convenient, the quality of the powder made by the feed ishigher, and the powder making efficiency is improved.

The invention discloses a preparation method of aluminum oxide polishing powder. The preparation method comprises the following steps of: S1, preparing aluminum hydroxide; S2, adding silicon dioxide, cerium oxide, ferric oxide and the aluminum hydroxide in the step S1 into a ball mill according to the mass ratio of (12-8): (3-1): (3-1): (2-1), crushing the added materials so as to obtain a crushed material; and S3, carrying out coarse treatment on the crushed material. According to the preparation method, the prepared aluminum oxide polishing powder is rhombic crystals, while the aluminum oxide polishing powder prepared through a traditional process is flocculent crystals, the aluminum oxide polishing powder prepared through the preparation method has good self-sharpening performance and toughness, the wear resistance of the aluminum oxide polishing powder can be greatly improved, the polishing time is prolonged to 5-5.5 hours from 3 hours, the whiteness is also improved, and the conventional whiteness is 89-92, while the whiteness of the product prepared by the process of the invention is 98 or above.

The invention relates to non-vacuum gas atomization continuous powder making equipment and a powder making method, and the non-vacuum gas atomization continuous powder making equipment comprises a smelting furnace which is used for smelting raw materials into molten steel; the tundish bottom pouring furnace is used for receiving molten steel and preserving heat and comprises a bottom pouring furnace body, a cover body and a plug rod. The atomizing tower is used for condensing molten steel liquid drops atomized into the atomizing tower into metal powder; a support is arranged on the tundish furnace body rotating moving trolley and used for symmetrically placing tundish bottom pouring furnaces, a material receiving station is arranged at one end of the tundish furnace body rotating moving trolley, and a powder making station is arranged at the other end of the tundish furnace body rotating moving trolley. According to the non-vacuum gas atomization continuous powder making equipment, smelting is carried out under the non-vacuum condition, casting powder can be added on the molten steel surface, molten steel oxidation is prevented, meanwhile, the risk that slag on the liquid surface flows into the leakage ladle is avoided, long-time continuous powder making can be achieved, the product performance is better, and energy is saved.