49results about How to "Consistent granularity" patented technology

The present invention relates to preparation process of hydrocarbon hydroprocessing catalyst, which has gamma-Al2O3 as carrier, VIB and VIII metal as the active component, and Ti, etc as the active assistant, with the assistant Ti being introduced in the pH swinging carbonization process for producing aluminum hydroxide. The process of preparing the catalyst is one complete mixing and kneading process including the steps of introducing Ti to aluminum hydroxide powder via adding Ti salt solution, adding Mo and/or W containing alkaline solution, mixing and kneading until the aluminum hydroxide powder is wetted completely by the alkaline solution, adding Co and/or Ni containing acid solution, mixing and kneading to obtain plastic material, extruding, drying, and roasting to obtain the catalyst. The catalyst has homogeneously distributed Ti component and obviously raised performance.

The invention relates to an artificial bed stone and a gravity separation method for complex ores. The method comprises the following steps: adding a selected ferric oxide material or an iron mixed material into adhesive and coal, mechanically molding the mixture to form circular balls, then burning the circular balls at the high temperature of between 1,150 and 1,500 DEG C in a common smelting furnace to make the circular balls in a molten state, pouring the molten circular balls into a spherical die, and cooling the circular balls to obtain the artificial bed stone with good abrasion resistance and breakage resistance and high hardness. The artificial bed stone is manufactured into the bed stone for a spherical jigging machine with specific gravity and specification and is applied to all jigging machines according to different proportion combinations of various specification so as to overcome the defects of conventional bed stones; the enrichment ratio of ore concentrate is high (2.5 times), the grade of tailings is low (the tin content of the tailings is less than 0.1 percent), the abandon rate is high (more than or equal to 30 percent), the separation efficiency is high (more than or equal to 92 percent), and each equipment has a handling capacity of 5 to 8 tons of ores per hour; and the artificial bed stone is an ideal separation medium for the jigging machine and can greatly improve the economic indicator of ore dressing technology and the economic benefit of all flows.

The invention relates to a coke reactivity and post-reaction intensity detection sample preparation apparatus and a sample preparation method. The preparation method which adopts a pelletizing-coking sequence comprises the following steps: weighing a well-burdened and well-mixed coal dust raw material by using an electronic scale, filling to a ball pressing die, pressing to form a briquette, putting the prepared coke briquette in an experiment coke oven, carrying out a coking experiment, and coking the coal briquette after the coking experiment is ended to form a coke briquette having consistent physicochemical performances with the experiment coke oven coke and having uniform dimension. Compared with the prior art, the preparation method has the advantages of changing of a traditional coke reactivity and post-reaction intensity detection sample preparation technology, avoiding of a tedious sample preparation technology using a crusher, a screener, a granulator and a sample milling machine to process an original coke block, overcoming of the non-uniform granularity of an original sample, time and labor saving, and improvement of the quality of the prepared sample.

Belonging to high and new agricultural technologies, the invention discloses a binder-free biological organic-inorganic ''complete element'' composite microbial fertilizer, a preparation method and application thereof. The employed fertilizer raw materials are crushed and sieved biological organic fertilizer and crushed inorganic fertilizer. The biological organic fertilizer adopts the strain Bacillus amyloliquefaciens SQR-9; and adopted the fertilizer can be ammonium sulfate, calcium superphosphate and potassium chloride. The technological process includes: mixing the raw materials evenly according to a nutrient demand proportion, adding the mixture into a disc granulator, carrying out intermittent spray granulation and screening, and finally performing drying at a temperature of less than or equal to 50DEG C to a moisture mass ratio of less than 20%, and conducting packaging, thus obtaining the commodity biological organic-inorganic ''complete element'' composite microbial fertilizer. The process greatly reduces the production cost of the biological organic-inorganic fertilizer, the operation is simple, the fertilizer granulation rate is good, and the granulation efficiency is high.

The invention discloses a making method of titanium aluminium hydroxide, which is characterized by the following: introducing adjuvant titanium in the gelling course of aluminium hydroxide through shaking pH value reciprocally; dispersing titanium evenly on the surface of aluminium hydroxide; enlarging the most probable aperture of titanium aluminium hydroxide.

The invention discloses a preparation method and device of polyvinyl chloride (PVC) plastic dipping fluid. The preparation method comprises the following steps: (1) weighing the following components in parts by weight: 20-30 parts of neoprene latex, 90-120 parts of PVC paste resin, 30-40 parts of calcium carbonate, 0.5-8 parts of a de-foaming agent, 0.2-5 parts of a stabilizer, 8-10 parts of a viscosity reducer, 0.5-2 parts of an emulsifying agent, 12-15 parts of pigments, 1-3 parts of an anti-ultraviolet agent and 2-8 parts of zinc oxide; (2) adding the weighed neoprene latex, de-foaming agent, stabilizer, viscosity reducer, emulsifying agent, anti-ultraviolet agent and zinc oxide in the step (1) into a stirring kettle and stirring for 0.5h-1h; and (3) adding the weighed PVC resin, calcium carbonate and pigments in the step (1) into the stirring kettle and stirring for 1h-2h under an ultrasonic condition to obtain the PVC plastic dipping fluid. On one hand, the plastic dipping fluid with high quality can be prepared; and on the other hand, the preparation cost can be saved.

The invention belongs to the technical filed of fodders and relates to a tryptophan additive premix; the processing method of the tryptophan additive premix comprises the following steps: (1) powdering: fermented feed liquid containing tryptophan is spray-dried to obtain powder; (2) crashing: core cobs are crashed into core cob particles with 40-80 meshes; (3) drying: the core cob particles are rapidly dried to obtain the particles with less than 5 percent of water content at 50-60 DEG C; (4) water spraying and mixing: the core cob particles and the powder are placed in a closed space according to weight ratio with 3-4:1, a water sprayer is arranged at the upper part of the closes space for spraying water, and air flows in the closes space to lead the core cob particles and the powder to be stirred. The tryptophan additive premix has high stability and good feeding effect.

Provided is a preparation method of a palladium nitrate solution. The method comprises the steps that 1 part by volume of concentrated nitric acid and 4 parts by volume of concentrated hydrochloric acid are taken and mixed to prepare a solvent A which is used for dissolving metal palladium powder, after the metal palladium powder is completely dissolved, denitration is conducted, hydrazine hydrate is added for reduction, palladium black is obtained, the palladium black is put into a reactor, deionized water and concentrated nitric acid are added for dissolving, cooling is conducted to reach the room temperature, filtration is conducted, and the palladium nitrate solution is obtained. The preparation method is easy to implement, short in technological process, high in production efficiency and good in product consistency, the dissolving rate of metal palladium is high and exceeds 99.5%, the chlorine ion content of the obtained palladium nitrate solution is extremely low, and palladium nitrate catalyst poisoning can be effectively avoided.

The invention discloses a vibration type planetary ball mill, and relates to the technical field of ball mills. The vibration type planetary ball mill comprises a planetary ball-milling mechanism and a vibration mechanism for driving the planetary ball-milling mechanism to perform multi-dimensional movement on raw materials in the planetary ball-milling mechanism, wherein the vibrating mechanism comprises a vibrating middle plate which is arranged at the lower part of the planetary ball-milling mechanism and is attached to the planetary ball-milling mechanism, an elastic supporting assembly for supporting the planetary ball-milling mechanism, and a vibrating motor arranged on the vibrating middle plate. The vibration type planetary ball mill has the advantages that the grinding speed is increased, the granularity is kept consistent during discharging, the discharging quality is improved, and large-scale popularization is facilitated.

The invention discloses a granulating and casting method. The granulating and casting method comprises the following steps that (1)casting is conducted, a liquid metal raw material is poured in to a tundish of a casting device, and flows into a solidification forming device below the discharging end of a casting pipe through the casting pipe; the liquid metal raw material flowing out of the discharging end of the casting pipe enter into forming grooves of a crystallizer in the solidification forming device; (2) solidification forming is conducted, after the liquid metal raw material in the to-be-formed grooves is solidified and formed, solidified and formed casting forming products are enabled to be separated from the crystallizer, and the casting forming products separated from the crystallizer fall into a material receiving and conveying device below the crystallizer; and (3) material receiving and screening is conducted. By adopting the granulating and casting method, casting and forming is conducted, the obtained products are relatively uniform in particle size, the production efficiency is high, waste materials such as dust generated in the production process are less, on onehand, waste can be reduced, and on the other hand, pollution to the environment can be reduced.

The invention belongs to the technical field of medicines and specifically relates to a posaconazole orally taken suspension and a preparation method thereof. The preparation method is used for preparing a posaconazole orally taken suspension compound on the basis of a micro-crystallizing technology. The posaconazole orally taken suspension compound comprises the following components in parts by weight: 30-50 parts of posaconazole, 160-402 parts of additives, solvent and aqueous medium, wherein the solvent is one or more of glycerinum, ethanol in volume percentage of 95%, absolute ethyl alcohol, propylene glycol and polyethylene glycol 100/400. According to the invention, the posaconazole orally taken suspension is prepared through the micro-crystallizing technology; according to the method, the solubility difference of the drug in different solvents is utilized to quickly and uniformly separate out the main drug particles under low-temperature and strong stirring conditions, the grainsize of the main drug particles is small and the distribution is concentrated; and the required grain size is further achieved by adopting the micro-crystallizing technology, the processing steps aresimple, the processing time is shorter, the process is convenient and quick, no high-temperature operation exists in the whole process, the active ingredients are free from decomposing risk, the product impurities are few and the quality is effectively guaranteed.

The invention relates to a W compound-coated lithium ion secondary battery positive electrode material and a preparation method thereof. The W compound-coated lithium ion secondary battery positive electrode material comprises a positive electrode material and a W compound coated on the positive electrode material. The positive electrode material is composed of primary particles or secondary particles formed by aggregation of the primary particles or the mixed particles of the primary particles and the secondary particles. The preparation method comprises the following steps: (1) sintering (2)surface treatment (3) drying and sieving treatment. The binary precursor A2 is obtained by continuous co-precipitation reaction, the elements are mixed uniformly, the reaction is sufficient, the control of morphology is facilitated, continuous production is performed, the production efficiency is improved and the particle size is more consistent. The structure of the binary high nickel material is stabilized by doping appropriate elements, the alkali content is controlled by water washing and coating of the W compound is realized in the process of water washing so that the electrochemical performance of the battery can be enhanced and the safety and the high temperature performance of the battery material can be enhanced.

The invention discloses incohesive soil freezing sample preparation equipment which includes a sample preparation chamber assembly, a temperature control chamber assembly, an axial transmission assembly, a low temperature circulating bath and signal acquisition monitoring assembly and a vacuum pumping assembly. The sample preparation chamber assembly is internally provided with a sample preparation chamber and used for holding samples and filtering water on the samples, the temperature control chamber assembly is used for low temperature freezing the samples, the sample preparation chamber assembly is located inside the temperature control chamber assembly, the axial transmission assembly is used for pushing out the samples after a test finished, the low temperature circulating bath and signal acquisition monitoring assembly is used for collecting test and monitoring data, and the vacuum pumping assembly is used for vacuumizing inside the temperature control chamber assembly. The sample preparation equipment can be used for directly preparing saturated remolded samples of gravel, gravel soil, sand soil, silty soil and other incohesive soils, the sample preparation process is simpleand easy, operability of the whole equipment is high, the efficiency of sample preparation is improved, and the time is saved.

The invention discloses an image semantic segmentation method based on multi-receptive-field context semantic information. The method comprises the steps of 1, converting an input image into a pixel matrix through convolution operation; 2, converting the same pixel matrix into a plurality of feature maps with multi-receptive-field context semantic information by adopting expansion convolution with different expansion rates; 3, performing feature extraction and down-sampling processing on the feature map with the multi-receptive-field context semantic information through converter encoders in different subnets to obtain a plurality of down-sampling feature maps with different receptive fields; 4, carrying out step-by-step up-sampling processing on the down-sampling feature map through a decoder to obtain feature maps with the same size and dimension, and generating a final feature fusion map; and 5, the feature fusion image completes image segmentation prediction through a convolutional neural network. The method can be effectively applied to image semantic segmentation, does not lose deep low-resolution features and fine-grained features, consumes a small memory, is remarkable in effect, and is convenient to popularize.

The invention discloses black matte granular glaze, which is mixed powder containing 0.3-0.5% of million-hole sieve residues and comprises the following components in percentage by weight: 52%-58% of SiO2, 17.5%-21% of Al2O3, 3.4%-4% of K2O, 1%-1.3% of Na2O, 2%-5% of CaO, 0.5%-1.5% of MgO, 8.5%-11% of BaO and 8.5%-11% of cobalt black. The preparation method of the black matte granular glaze comprises the steps of S1, weighing the components according to the formula, adding water, and grinding until the million-hole sieve residue of the glaze water is 0.3-0.5% and the specific gravity of the water glaze is 1.65-1.68; S2, coating the surface of a biscuit firing green body with the glaze water in a glaze spraying glazing mode, wherein fine point atomization is adopted as a glaze spraying method, and the thickness of a glaze layer is controlled to be 1-1.5 mm; and S3, putting the biscuit firing green body subjected to glaze spraying into a kiln, heating to 1230-1250 DEG C, sintering for 8-12 hours, slowly cooling after sintering, and discharging from the kiln to prepare the black matte granular glaze which has the advantages of stable glaze color, high yield, concave-convex glaze surface, stereoscopic impression and the like.

The invention discloses a grinding method of rare earth-yttrium-lanthanum composite silicon nitride ceramic. The grinding method comprises the following steps: S1, preparing raw materials required tobe ground in the preparation process of the rare earth yttrium-lanthanum composite silicon nitride ceramic; S2, separately taking out large raw materials which are difficult to grind and small raw materials which are easy to grind in the raw materials, and respectively obtaining large crushed materials and small ground materials a; S3, putting the large crushed material and ground material a in acentrifugal planetary grinding machine together for once more grinding, so as to obtain a grinding material b; and conducting repeated grinding and elutriation to removing floating ash suspended on the water surface, drying, filtering and selecting raw material bodies meeting the proper requirements, and conducting multi-stage repeated grinding for multiple times, so as to finally grind the raw materials into ultrafine raw materials. The consistency of the particle size of powder generated in the grinding process of the raw materials and uniform distribution of multiple particle sizes during mixed grinding are guaranteed, the situation that grinding is not thorough due to high hardness difficulty is thoroughly changed, and the quality of fired and formed products is improved.