45results about How to "Improve powder quality" patented technology

Provided are a high-pressure smelting atomizing nitrogen-quenching device and a method for utilizing the device to produce samarium iron nitrogen alloy powder. The high-pressure smelting atomizing nitrogen-quenching device comprises a high-pressure control system, a master alloy smelting system and an atomizing nitrogen-quenching system. The high-pressure control system is mainly composed of a high-pressure furnace body, a pressure control device and a vacuum pumping device. The master alloy smelting system is mainly composed of a crucible, an infrared temperature measurement device and an induction heating device. The method for utilizing the high-pressure smelting atomizing nitrogen-quenching device to produce the samarium iron nitrogen alloy powder comprises the steps of high-pressure smelting, atomization into drops, high-pressure nitrogen quenching and powder collection. The high-pressure smelting atomizing nitrogen-quenching device is simple and scientific in structure, the content of nitrogen in the produced powder is high, powder solidification quality is good, and smelting atomization and nitrogen quenching are finished in an identical container rapidly and conveniently.

The invention relates to a 3D printer for metal powder and belongs to the field of 3D printing equipment. According to the 3D printer for the metal powder, the structural design is reasonable, operation is convenient, the powder laying quality is good, the powder is preheated uniformly, the part machining time is greatly shortened, formed parts are taken easily and conveniently, automatic powder adding operation can be achieved, a large quantity of manpower and material resources are saved, and an operator is prevented from inhaling a large amount of the powder. According to the adopted technical scheme, a first electric push rod is mounted on the inner side of a powder outlet sleeve, a lifting device is mounted on the inner sides of a connecting plate and a positioning plate, a conical hole, a shielding plate, a jacking rod and a guiding pipe connected with the conical hole are arranged on a lifting plate to suck the powder around the parts, an electric heating pipe is arranged on theinner side of the upper end of the powder outlet sleeve to preheat the powder, an anti-sticking part is arranged on a powder laying roller, a sealing cover is mounted on an operating panel, and a feeding sleeve, a telescopic sleeve and a feeding screw are arranged at the upper end of a sealing cover to achieve material-adding operation.

Disclosed is an improved process for the production of phthalic anhydride wherein the spent catalyst is removed from the oxidation reactor tubes more effectively by vacuuming from the top and using a vacuum hose having a tip with an increased impact strength and with a maximum hardness. As a result, the new catalyst loading can be made more uniform and the process may be operated with improved stability at higher organics loadings in the reactor feed. Process stability may be further improved by varying the outlet temperature of the phthalic anhydride precondenser over time.

The invention relates to a process for preparing zinc oxide material. The preparing process for zinc oxide material is characterized in that the preparing process includes the following steps: 1) selection of material: selecting material containing zinc oxide, urea and water as the mole ratio of zinc oxide and urea is 0.001-0.9 and that of zinc oxide and water is 0.01-1000 as reserve material, 2) blending the material containing zinc oxide, urea and water, grinding the mixture uniformly and obtaining slurry, 3) heating to form colloid: heating the slurry obtained from the step 2) at the temperature between 121-340 DEG C to obtain transparent colloid, 4) employing one of the following two methods to obtain zinc oxide material: a ) heat decompositing filter residue by hydrolysis to obtain zinc oxide material, b ) heat decomposition: heating the colliod obtained from step 3) to the temperature between 420-800 DEG C to obtain zinc oxide material. The method has the advantages of low cost, low reaction temperature and capability of catalyzing urea to heat decomposite to obtain cyanamide. The obtained product is characterized that graininess is small, adulteration is uniform and the product is larger than the specific surface area.

The invention relates to a metal powder 3D printer, which belongs to the field of 3D printing equipment, and provides a metal powder 3D printer with reasonable structural design, convenient operation, good powder spreading quality, uniform powder preheating, greatly shortened part processing time, and easy handling of formed parts. It is convenient and can realize automatic powder adding operation, which saves a lot of manpower and material resources, and prevents the operator from inhaling a large amount of powder metal powder 3D printer. The technical solution adopted is to install the first electric push rod inside the powder outlet sleeve, and install A lifting device is installed on the inner side of the positioning plate, and a cone hole, a shielding plate, a ejector rod and a guide tube connected to the cone hole are set on the lifting plate to realize powder suction around the parts, and an electric heating tube is set on the inner side of the upper end of the powder outlet sleeve to clean the powder. Carry out preheating, install the anti-sticking part on the powder spreading roller, install the sealing cover on the operation panel, and set the feeding sleeve, the telescopic sleeve and the feeding screw on the upper end of the sealing cover to realize the feeding operation.

The invention discloses improved flour. The flour is made from, by weight, 80-100 parts of wheat grain, 16-20 parts of superfine wheat bran and 0.6-1 part of improver. The invention also discloses a preparation method of the improved flour, including the following steps: firstly, washing and drying the wheat grain; secondly, pretreating the wheat grain with a wheat grain pretreatment device; thirdly, placing the pretreated wheat grain at room temperature for 12 hours and then grinding the wheat grain and purifying the flour twice to obtain wheat flour; fourthly, mixing all the raw materials evenly. Steam-heat-treated wheat grain is applied to make base flour of the wheat flour, and the wheat flour obtained after pretreatment can not only allow a stronger gluten network to be formed and thegluten strength of the dough to be strong, but also allow the gloss and whiteness of the wheat flour to be improved; cinnamon gum extracted by high pressure and high temperature is applied as an improver, the quality of the wheat flour and the chewing sensation of wheat flour products are improved, and improved wheat flour with high quality and good appearance is obtained.

The invention discloses a powder feeder capable of drying and preheating the powder based on the laser additive manufacturing and the powder feeding method. The powder feeder comprises an electrical element, a hopper and a ceramic heating tank, wherein the ceramic heating tank is used for drying and heating the powder; and the electrical element located at the lower part of the powder feeder comprises a control system (11) and a motor (13), and the control system (11) is connected to the motor (13). According to the powder feeder and the powder feeding method, the structure is simple, the timefor independently drying and preheating the powder is saved, and real-time preheating is realized. The quality of the powder fed into a melting tank is better, so that the good quality of a forming part is ensured.

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 relates to the field of crushing equipment, in particular to an efficient negative-pressure crusher for preparation of ultra-fine powder. The efficient negative-pressure crusher for preparation of the ultra-fine powder comprises a case with a crushing cavity, a fixed grinding head arranged on the inner wall of the crushing cavity and a grinding disc rotationally arranged in the crushing cavity, wherein a movable grinding head is arranged on the grinding disc; the movable grinding head and the fixed grinding head are matched to be used for crushing materials; the case comprises a case body and a matching disc which is fixed onto the case body and encloses the crushing cavity with the case body; the matching disc and the grinding disc are in vertical sealing fit; and the case is provided with a negative-pressure connector which is communicated with the crushing cavity and connected with a negative pressure source to exhaust air from the crushing cavity. According to the efficient negative-pressure crusher for preparation of the ultra-fine powder provided by the invention, the negative-pressure connector is arranged, and the crushing cavity is subjected to air exhaust through the negative-pressure connector, so that the vacuum degree in the crushing cavity is guaranteed, the powder oxidation degree can be reduced in the crushing process, the powder quality can be improved, and meanwhile, combustion explosion is not likely to happen under the high-temperature condition.

Disclosed is an improved process for the production of phthalic anhydride wherein the spent catalyst is removed from the oxidation reactor tubes more effectively by vacuuming from the top and using a vacuum hose having a tip with an increased impact strength and with a maximum hardness. As a result, the new catalyst loading can be made more uniform and the process may be operated with improved stability at higher organics loadings in the reactor feed. Process stability may be further improved by varying the outlet temperature of the phthalic anhydride precondenser over time.

The invention discloses a cryogenic traditional Chinese medicine ultrafine pulverization device, which is used for pulverizing materials. It is composed of a refrigeration exchange system, a coarse pulverization system and a low-temperature air flow pulverization system; 1. Two gas compressors, refrigerators, and heat exchangers; the coarse crushing system mainly includes sealed feeders, the first and second spiral precoolers, coarse grinders, the third cyclone separator, and the third dust collector; The low-temperature airflow pulverization system mainly includes a compressor, a fluidized bed airflow pulverizer, the first and second cyclone separators, the first and second dust collectors; the raw materials are subjected to low-temperature treatment during coarse pulverization, and the gas and solid are subjected to gas treatment after coarse pulverization. Solid separation pre-cools the coarsely crushed material again, and then enters the fluidized bed jet mill for fine grinding, so that the material is more refined. Therefore, the present invention has high crushing capacity, fine particles of the crushed material, and high powder quality. At the same time, the cold air is recycled and reused in the fully enclosed system, which saves energy and further reduces costs.

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 present invention disclosed a kind of children's Qing Rein Chinese medicine particles, which belong to the field of traditional Chinese medicine.It is made of gold and silver flowers, scutellaria baicalensis, Bupleurum, Banlangen, Antelope horn powder, beef, cattle horn concentrated powder, and borneol as raw materials., Improve the powder quality of the material; effectively protect the thermist component of spray drying technology, which is not destroyed, and overcomes the problems of traditional drying difficulties, large hygroscopicity, poor liquidity, long drying time, and uneven pink pink. In a short time, in a short timeInternal granules with good liquidity, low water content, and uniform size are consistent, which greatly improves the quality of Qing Ning Ning Granules.And to increase the measurement items of the content of drugs such as Huangpinyl, custodonin, tinyl flowers, and beef and bilirubin in the formula, so that the quality control of the children's clearing the Jining particles is significantly improved.After clinical application, the total effective rate reached 94.29%, and the significant efficiency reached 80%.

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.

The invention relates to a high-efficiency energy-saving oxidation method of a waste hard alloy. The method comprises the steps of sorting the waste WC-Co hard alloy according to differences of Co content, using aqueous solution which is prepared from sodium hydroxide with the concentration being 80g.L <-1>, , sodium carbonate with the concentration being 30g.L <-1> and trisodium phosphate with the concentration being 60g.L <-1> to remove impurities and oil on the surface of the waste WC-Co hard alloy at the temperature of 80 DEG C, conducting oxidation of the hard alloy in the conditions of oxygen enrichment, rotation, and wetness increasing, specifically, the temperature is 700-1000 DEG C, the time for thermal insulation is 0.5-6.5 hours and the gas flow speed is 0.1-10.5m3, / h, and the wet oxidizing atmosphere is used for driving an injector through a pump to inject water into a forge at the injection speed of 0.1-300ml / min. The high-efficiency energy-saving oxidation method of the waste hard alloy is easy to operate, short in process, low in energy consumption, has no specific requirement for production equipment, and can prolong the service life of the equipment; the recovery rate is high, and by adoption of the method, the prepared oxide precursor power has good quality, therefore the high-efficiency energy-saving oxidation method of the waste hard alloy has high market application value and economic value, and is suitable for industrial production.