35results about How to "Small angle of repose" patented technology

The invention relates to a method for preparing ultrafine boron carbide granulation powder by combining high-energy ball milling with a spray drying technology. The method comprises the following steps: firstly, burdening; secondly, preparing slurry: putting deionized water, a lubricant A, a lubricant B, a dispersing agent, a binder A and a binder B into a polytetrafluoroethylene ball mill tank, adding ball milling beads on a planetary ball mill to carry out ball milling mixing, then adding boron carbide micropowder into the ball mill tank and continuously carrying out ball milling for 0.5 hour, and then adding a binder C into the ball mill tank and carrying out ball milling for 12 to 18 hours; finally, adding a defoaming agent into the ball mill tank and carrying out ball milling for 10 minutes to obtain the slurry; thirdly, carrying out spray drying granulation: carrying out drying granulation on the slurry by using a spray drying granulator to obtain the ultrafine boron carbide granulation powder. According to the preparation method disclosed by the invention, the spherical granulation powder is obtained by combining wet high-energy ball milling with the spray granulation technology; the obtained powder is helpful to the forming of the boron carbide powder and the improvement on relative density of a biscuit.

The invention discloses high-liquidity starch and a preparation method and the application thereof. The preparation process is simple, reaction is uniform, production cost is low, reaction time is short, expansion of starch particles under the alkaline reaction condition is restrained by sodium sulfate to avoid starch gelatinization and enable starch chemical modification to be centralized on the particle surfaces; introducing an ultrasonic field into the reaction process can improve reaction efficiency, reduce usage of chemical agents, shorten reaction time and reduce cost; electronegative substitute groups are crosslinked by metallic ions of different valences, a great amount of hydroxyls on the starch particle surfaces are shielded, and accordingly angle of repose of starch can be evidently decreased, and liquidity is improved. High-fluidity starch with the angle of repose ranging from 2 degrees to 5 degrees is obtained and has wide application values in industries of foods, daily chemicals, printing, agriculture, petroleum and the like.

The invention discloses a processing technology of an instant domestic fungus composite soup material. The processing technology comprises raw material selection, cleaning, drying, crushing, mixing, sterilization and packaging. The processing technology has simple processes and a low cost. The instant domestic fungus composite soup material is rich in nutrients and has a delicious taste and a high added value.

The invention relates to a new crystal form I of an agomelatine sulfate and a preparation method thereof. The preparation method of the crystal form I comprises the steps of heating and dissolving the agomelatine sulfate in a soluble solvent, slowly dripping into an anti-solvent to precipitate crystals, filtering and vacuum drying to obtain the crystal form I. The soluble solvent can be selected from alcohol and amide, and the anti-solvent can be selected from ester and alkane.

The invention discloses microporous foam glass and a preparation method thereof, and relates to the field of glass products. The foam glass is prepared from the following raw materials of crushed glass powder, mordenite zeolite, hyalophane mica, modified quartz powder, kaolin, titanium dioxide, sodium fluoride, reinforced fiber, adhesive, foaming agent and foam stabilizer. The preparation method comprises the following steps: smashing raw materials, melting, cooling, standing, foaming, annealing, foaming and polish. The production raw materials of the foam glass are wide in source, and are simple in a preparation process; the finished product of foam glass contains a large amount uniform, unique and enclosed micropores inside, so that the heat-insulation high temperature and compressive resistance of the foam glass product are improved remarkably, as well as long service life, wide application field and suitability for popularization and application are achieved.

The invention relates to the field of medical technology, and discloses a flunarizine hydrochloride composition capsule and a preparation method thereof. The flunarizine hydrochloride composition capsule comprises flunarizine hydrochloride, polyethyleneglycol, talcum powder, magnesium stearate, lactose and starch. As auxiliary material composition is changed, that is, flunarizine hydrochloride is added into polyethyleneglycol which is in a molten state, and then uniformly mixed with other auxiliary materials in an equivalently progressive increasing manner, the dissolution rate and the flowability of the end product are improved remarkably.

The present invention belongs to the field of medicine technology, and especially a kind of diabetes treating medicine composition and its preparation process and use. Specifically, the medicine composition is prepared with glibenclamide, puerarin, trichosanthes root and taurine. The medicine composition has high curative effect on diabetes and can lower the incidence rate of diabetes complication, including diabetic nephropathy, and its taurine can reduce the angle of repose of the medicine composition powder to smaller than 30 deg and improve the flowability of medicine composition powder.

The invention discloses a preparation method and products of a powdery soup bag with functions of clearing damp and expelling toxins. The powdery soup bag is prepared from, by mass, 15-20 parts of radix fici simplicissimae, 13-15 parts of rhizoma polygonati, 16-18 parts of radix puerariae, 15-18 parts of common yam rhizomes, 6-8 parts of nutmeg, 3-5 parts of fructus chaenomelis lagenariae, 2-3 parts of poria cocos, 1-2 parts of licorice roots, 1-2 parts of herba taraxaci, 1-2 parts of fructus jujubae, 1-2 parts of burdock roots, 1-2 parts of cortex cinnamomi, 1-2 parts of fructus citrus sarcodactylis and 1-2 parts of radix notoginseng. The raw materials in the powdery soup are selected from medicinal herbs with the functions of fragrance enhancement and health care, and the product is convenient to eat and good in taste, and enhances the immunity of the human body while clearing the damp.

The invention discloses a preparation method of a surface abrasion-resistant coating of a floating clamping jaw of a numerical control punching machine. Firstly, chromium oxide ceramic particles and alow-melting-point additive are weighed according to the proportion of the coating and are evenly mixed; and then the high-performance abrasion-resistant coating is prepared on the surface of the clamping jaw after sand blasting through an atmospheric plasma spraying technology. The method solves the problem that a dovetail groove structure is used in a traditional floating clamping jaw of the numerical control punching machine and accordingly a plate is locally deformed in the clamping process. The low-melting-point glass powder additive in the mixed powder is of a unique spherical structure,so that the fluidity is better, the repose angle formed due to stacking is smaller, and material mixing is more uniform; a base material and a filler can be sufficiently dense, the density of the prepared coating is greatly improved, and problems of the pure chromium oxide coating in the using process are effectively solved, so that the tribology performance of the coating is better, the servicelife is longer, and the preparation cost is lower; and the thermal influence of the spraying process on the floating clamping jaw of the numerical control punching machine is small, and the structureand shape of a base body are not changed.

The invention provides a quartz glass powder and a preparation method thereof. The quartz glass powder comprises silicon dioxide powder, aluminum oxide, red lead, boric acid, barium oxide, bismuth oxide, titanium dioxide, tellurium dioxide, zincate, manganese dioxide, sodium oleate, polyglycol stearate and yttrium oxide. A preparation method of the silicon dioxide powder comprises the steps: removing impurities in quartz ores by using a color sorter, and carrying out wet ball milling, ore pulp is composed of quartz powder and a water solution, and the water solution contains an anionic surfactant and sodium silicate; carrying out drying under the condition of 300-500 DEG C for 2-4 h after ball milling, removing iron under strong magnetism, then, entering an acid pickling process, drying the quartz powder with acid pickling impurity removed impurities under the condition of 100-150 DEG C, and carrying out uniform dry mixing on the quartz powder and micropowder silica gel according to aproportion of 10:(0.5-1).

The invention discloses an oral traditional Chinese medicine for treating fracture and tendon injury and a preparation method of the oral traditional Chinese medicine. The pharmaceutical composition comprises the following components: 60 g of frankincense, 60 g of myrrh, 60 g of draconis resin, 60 g of earthworm, 60 g of muskmelon seed, 120 g of fortune's drynaria rhizome, 120 g of himalayan teasel root, 100 g of sappan wood, 240 g of Chinese angelica, and 120 g of pyrite (vinegar quenching). The oral traditional Chinese medicine is prepared from the pure herbal medicinal materials and is small in side effects, all the components give play to difference synergistic effects and act on fracture and tendon injury parts together, and the medicines are used according to the monarch, minister, assistant and guide principle, so that all the components can play the maximum role. Through process screening, the uniformity of particle size distribution is improved, the packing difference is reduced, the dissolution effect is improved, the bulk density is improved, the administration is more convenient, a repose angle is reduced, the flowability after dissolution is increased, the mixing is uniform, and the curative effect is ensured. Therefore, the oral traditional Chinese medicine has the characteristic of remarkable treatment effects on fracture and tendon injury.

The invention provides erythromycin ethylsuccinate dry suspension and a preparation method thereof. The erythromycin ethylsuccinate dry suspension is prepared from the raw materials of 120 to 130 weight parts of erythromycin ethylsuccinate, 630 to 670 weight parts of saccharose powder, 10 to 20 weight parts of sodium alginate, 1 to 3 weight parts of steviosin, 5 to 15 weight parts of hydroxy propyl cellulose, 1 to 3 weight parts of lauryl sodium sulfate, 0.4 to 0.8 weight part of lemon yellow and 5 to 15 weight parts of sodium carboxymethyl starch. The sedimentation volume ratio F of the erythromycin ethylsuccinate dry suspension disclosed by the invention is very close to 1, a flocculation degree beta of the erythromycin ethylsuccinate dry suspension is about 6.0, and redispersibility ofthe erythromycin ethylsuccinate dry suspension is larger than or equal to 95%; thus, the suspension can be evenly dispersed in water, the problem that erythromycin ethylsuccinate dry suspension in theprior art can form much small micelle after water is added into the erythromycin ethylsuccinate dry suspension according to an instruction book is solved, clinical use experience is improved, and patient compliance is improved.

The invention discloses a preparation method and application of a solid nano calcium carbonate denitration agent with high fluidity, high efficiency and low by-products, and belongs to the technical field of flue gas purification and denitration. The preparation method comprises the following steps: S1, preparing hyperdispersant slurry; s2, preparing a nano calcium carbonate solution; s3, mixing the nano calcium carbonate solution, the hyperdispersant slurry, polystyrene, boric acid ester and stearic acid to obtain a first product; s4, the first product is placed on the surface of a filter press to be subjected to filter pressing, the first product is washed with pure water during filter pressing, and a second product is obtained; s5, the second product is put into a granulator for granulation forming, a binder is put into the granulator during granulation, and the denitration agent can be obtained. Compared with a traditional denitration agent, the prepared denitration agent is smaller in particle size and angle of repose, has high fluidity, is prevented from being blocked in a pipeline, has the denitration efficiency far higher than that of the traditional denitration agent, and is more practical.

The invention discloses high-strength stainless steel powder for SLM, a preparation method and a printing process thereof, belongs to the field of metal materials for additive manufacturing, relates to the high-strength stainless steel powder for SLM, the preparation method and the printing process thereof, and solves the problems that the gas content, especially the oxygen content, in existing vacuum gas atomization powder is too high; and the requirements for high strength and high plasticity and toughness of the SLM printed stainless steel part cannot be met. The high-strength stainless steel powder for SLM comprises the following chemical components in percentage by mass: less than or equal to 0.04% of C, less than or equal to 0.05% of Si, less than or equal to 0.05% of Mn, 12.5-13.5% of Cr, 7.5-8.5% of Ni, 2.0-2.5% of Mo, 1.0-1.15% of Al, 0.02-0.08% of Ce, less than or equal to 0.005% of P, less than or equal to 0.002% of S, less than or equal to 0.030% of O, less than or equal to 0.003% of N and the balance of Fe and inevitable impurities. The particle size range is 15-53 [mu] m. The density of the final SLM printed part reaches 99.8% or above, the tensile strength is larger than or equal to 1400 MPa, the yield strength is larger than or equal to 1360 MPa, the ductility is larger than or equal to 13%, the percentage reduction of area is larger than or equal to 57%, the U-shaped impact energy is larger than or equal to 100 J, and the use requirements for high strength and high plasticity and toughness of the 3D printed stainless steel part are met.