23 results about "Dry powder" patented technology

The invention relates to a stichopus japonicus powder feed and a processing method thereof and belongs to the technical field of feeds and processing methods thereof. The stichopus japonicus powder feed is characterized by comprising the following ingredients by weight percent: 30-50% of degummed kelp dry powder, 10-20% of sargassum thunbergii dry powder, 15-25% of gulfweed dry powder, 8-13% of perforated sea lettuce dry powder, 5-12% of fish powder, 4-8% of yeast powder and 1-3% of complex vitamin. The processing flow comprises the following steps: collecting raw materials, degumming kelp, drying the raw materials, mixing the raw materials, performing coarse crushing, mixing with the fish powder and stirring, performing superfine crushing and packaging. Nutritional ingredients in the stichopus japonicus powder feed are good in stability, the growth speed and cultivation survival rate of stichopus japonicus can be effectively improved, the growth speed obtained by adopting the stichopus japonicus powder feed is faster than that obtained by adopting other types of the feed by 1.5-2.0 times, the survival rate is high, the weight-increasing rate is fast, and the production efficiencyof cultivation of the stichopus japonicus is greatly improved. Simultaneously, the pollution on a cultivation water body is reduced, and the growth speed of the stichopus japonicus is improved.

The invention relates to a method for preparing the cathode material used in a ferrous phosphate lithium battery by adopting low-valent oxyacid of phosphorus; the technical proposal is as follows: lithium salt, ferrous salt, phosphate, and hypophosphorous acid or hypophosphite are blended according to the mol ratio that Li: Fe: PO4<3->: H3PO2 or AH2PO2 or E(H2PO2)2 is equal to x: y (1-z): k. Carbon-containing compound or carbon powder and wet milling liquid are added, ball milling is carried out for 3-12 hours, and the mixture is dried in atmospheric pressure or vacuum at 48-100 DEG C. The dried powder is prepared into the lithium iron phosphate containing controllable Fe2P by two-stage sintering process or temperature programmed two-stage sintering process. When the molecular formula of hypophosphite, one ingredient of the reaction composite, is AH2PO2 or E(H2PO2)2, A is Li<+>, Na <+>, K<+>, Ag<+> or NH<+>, E is Ca<2+>, Sr<2+>, Ba <2+>, Ga <2+>, Ge<2+>, Sn<2+>, Sc<2+>, Mn<2+>, Fe<2+>, Co<2+>, Ni<2+>, Cu<2+>, Zn<2+> or Mo<2+>. The method of the invention has low cost of raw materials, broad source of raw materials, simple preparation and short time consumed; the prepared materials have even composition, excellent discharge performance and good discharge cycling performance in heavy current.

The invention relates to a method for preparing material pellets in the production of a vanadium-nitrogen alloy. The method comprises the following steps of: mixing a solid vanadium raw material with a solid reducer in a proportion of 8: (1-3): 1 in a dry powder mixing machine for 40-70min, and then adding a liquid binder to a wet mixing machine and mixing for 90-150min, wherein the addition amount of the liquid binder is 3-8 percent of the total amount of the solid vanadium raw material and the solid reducer; and then pressing and pelletizing by two speed-adjustable forming machines which are connected in series. By carrying out dry mixing on the raw material before wet mixing, the uniformity of the raw material is greatly increased, and the pelletizing quality and the product grade of the finished product are improved; and qualified pellets can be obtained in a such way that the two forming machines work in series at an once working process, thus a continuous working mechanism is formed and the pelletizing efficiency is increased.

The invention discloses an efficient environmentally friendly ecological insecticide for a garden. The insecticide is prepared from, by weight, 40-50 parts of plant dry powder, 3-6 parts of inorganic bases, 14-18 parts of binder, 15-19 parts of insecticide synergist, 7-9 parts of surfactant, 2-4 parts of realgar, 4-6 parts of penetrant, 8-10 parts of stabilizer, 8-14 parts of propylene glycol and 120-160 parts of water. The efficient environmentally friendly ecological insecticide for the garden is harmless to plants, the insecticidal effect is good, the insecticide is unlikely to dry and volatilize, the efficacy time is long, and the control efficiency of garden plant pests such as red spider, aphid, whitefly, scale insect, pseudaulacaspis pentagona, Aromia bungii, Spodoptera litura, tortrix, loopworm, Arge pagana and the like is good; a number of plant insecticidal components which are nontoxic and harmless to environment are used in the raw materials; meanwhile, according to the preparation method provided, the production cost is low, the process is concise, and the preparation method has high practical value and good application prospects.

The invention discloses a fire extinguishing mechanism of a power distribution cabinet. The fire extinguishing mechanism includes the power distribution cabinet, a vibration reducing mechanism for reducing vibration and a heat dissipation mechanism for heat dissipation. The vibration reducing mechanism is installed at the bottom of the power distribution cabinet, one side of the power distributioncabinet is equipped with the heat dissipation mechanism, and fire extinguishing mechanism bodies for handling fire hazards and an alarm power-off mechanism for reminding and protecting are also included; each fire extinguishing mechanism body includes a mounting base, a fixing base, a dry powder tank, a normally open switch, a dry powder pipe and a dry powder nozzle, the mounting base is welded to one side of the power distribution cabinet, the fixing base is arranged above the mounting base, the dry powder tank is installed on the mounting base and the fixing base, the normally open switch is connected to the upper end of the dry powder tank, and the normally open switch communicates with the dry powder nozzle installed in the power distribution cabinet through the dry powder pipe; and the alarm power-off mechanism includes a smoke sensor, an alarm light, a relay, a wire and a plug. The fire extinguishing mechanism has the beneficial effects that fire catching and effective extinguishing can be effectively warned, and the safety of the power distribution cabinet is effectively protected.

The invention belongs to the field of medicinal chemical synthesis and in particular relates to a method for preparing 4-amino-2,6-dihydroxypyrimidine by virtue of a dry frying process. The method forpreparing 4-amino-2,6-dihydroxypyrimidine by virtue of the dry frying process comprises the following concrete steps: by taking sodium methoxide dry powder, urea and methyl cyanoacetate as raw materials, reacting under certain conditions, heating at a certain temperature, steaming out generated methanol, and finally generating 4-amino-2,6-dihydroxypyrimidine. According to the invention, yield of4-aminopyrimidine obtained through cyclization reaction can reach 80-85%, and product purity is more than 99%. Compared with a liquid-phase cyclization method, the method provided by the invention hasthe advantages that reaction yield can be improved by more than 15%, reaction period is reduced to be 2-3 hours from the original more than 8 hours, and no water methanol is produced, so that pollution of organic wastewater is greatly reduced, preparation cost and energy consumption of 4-amino-2,6-dihydroxypyrimidine are greatly reduced, and the method provided by the invention is hopeful to being applied to industrial production.

The invention discloses a dry powder extinguishing agent and a preparation method thereof. The dry powder extinguishing agent comprises the following materials in percentage by weight: 80% of B-Mg sludge, 6% of sodium bicarbonate, 8% of potassium nitrate, 1% of sulfamic acid and 5% of an anti-blushing agent. The preparation method of the dry powder extinguishing agent comprises the following steps: S1, smashing the raw material B-Mg sludge; S2, through metering, adding 80% of B-Mg sludge, 6% of sodium bicarbonate, 8% of potassium nitrate, 1% of sulfamic acid and 5% of an anti-blushing agent ina mixing silicification device for mixing silicification; S3, drying the material subjected to silicification; S4, sieving the dried material; and S5, packaging the sieved material and metering to obtain a finished product. According to the dry powder extinguishing agent and the preparation method thereof, B-Mg sludge generated during the production process of a borax factory is utilized, the resource is reasonably utilized, the molecular particle size of B-Mg sludge is smaller than 15 microns, and a plurality of holes are formed in the surface, so that the surface contact area is increased and the adsorption capacity is high.

The invention relates to the technical field of pressurization, and discloses a dry powder fire extinguishing device based on a fluid pressure intensity principle. The dry powder fire extinguishing device comprises a shell, wherein a button is fixedly connected to the outer part of the shell, a bottle body is fixedly connected to the inner part of the shell, a stirring fan is fixedly connected tothe inner part of the bottle body, a pressure plate is movably connected to the inner part of the bottle body, a sealing cover is fixedly connected to the inner part of the bottle body, and an elasticfilm is fixedly connected to the outer part of the sealing cover. According to the dry powder fire extinguishing device, under the interaction of the pressure plate, the sealing cover, the elastic film, a contact, a sliding rod, a first spring, a collision block, a first gear, a second gear, a first moving block, a third gear, a second moving block, a sliding plate, a detection assembly, a sliding rail and a sliding block, the internal pressure of a fire extinguisher can be kept constant all the time under the action of the pressure plate in the process of using the fire extinguisher by a user, so that the fire extinguishing range of the fire extinguisher can be kept in a good spraying range all the time, and the fire extinguishing time is shortened.

The invention belongs to the field of skin repair, and particularly relates to a preparation method and application of humanized skin fibroblast intracellular effective components. The humanized skinfibroblast intracellular effective components and plant extracts are mixed to make freeze-dried powder, the freeze-dried powder can be added to articles for skin nursing, and the effect of protectingskin and muscle can be achieved. An enzymatic digestion method is used for obtaining humanized skin fibroblasts, through repeated frost thawing, cell lysis are realized, cell intracellular factors arecollected, and plant extracts are supplemented. The cell intracellular factors and the plant extracts can be in interpromomtion, effective components can be stabilized and maintained, components required by skin and muscle can be supplemented, and the skin and muscle vitality can be maintained.

The invention relates to an insecticide-fertilizer for an out-of-season fruit green radish and a preparation method thereof. The insecticide-fertilizer is a high-concentration clear solution water-soluble Insecticide-fertilizer prepared by mixing a macroelement water-soluble fertilizer and a biopesticide. The insecticide-fertilizer comprises the following active ingredients in parts by weight: 14.29 parts of ammonium polyphosphate, 8.93 parts of potassium nitrate, 4.29 parts of phosphoric acid, 22.14 parts of potassium tripolyphosphate, 0.29 parts of zinc sulphate monohydrate, 0.43 parts of boric acid, 4.2 parts of sorbitol, 2.5 parts of mannite, 2.4 parts of xylitol, 2.2 parts of glycerin, 5.26 parts of sulphur submicron powder, 1.21 parts of allicin, 0.18 parts of mandala dry powder, 3.68 parts of plantain herb, 1.53 parts of pepper and 100 parts of softened water. The insecticide-fertilizer can be used for effectively promoting the expansion of a radish fleshy root and inhibiting the plant diseases and insect pests; particularly the prevention effective rate for the soft rot is 100% and the pesticide residue is zreo.

The present invention discloses a rich aroma maltol sashimi, which is prepared from the following raw materials by weight: 90-110 parts of squid, 15-16 parts of royal jelly freezing-drying powder, 12-13 parts of syzygium samarangense, 7-8 parts of lemon peel, 13-14 parts of haw rolls, 1.3-2 parts of stamen nelumbinis, 1-2 parts of fructus viticis, 1.5-2 parts of ginseng flower, 0.1-0.2 part of ethyl maltol, 0.2-0.5 part of sodium glutamate, 0.1-0.2 part of phosphate, 1-2 parts of lactic acid bacteria, 300 mmol/l of a cacl2 solution, a proper amount of fine salt, a proper amount of sesbania gum, and a proper amount of sugar. According to the present invention, the rich aroma maltol sashimi has characteristics of unique taste, long shelf life and good health effect; the sousing method is used to thaw and the injection method is used to souse, such that the process is unique and innovative, and the value adding space and the extending benefits of the sashimi are increased; and the stamen nelumbinis, the fructus viticis and other traditional Chinese medicine components are added, and the health effects of heart-fire clearing, kidney tonifying and human immunity enhancing of the walnut meat are added.

Dry powder formulations for inhalation and their use in the treatment diseases and conditions. The formulation contains a uniform blend of a first spray-dried powder and a second spray-dried powder. The first spray-dried powder contains spray-dried particles of a therapeutically active ingredient dispersed in a pharmaceutically acceptable hydrophobic excipient. The second spray-dried powder contains spray-dried particles formed from a pharmaceutically acceptable hydrophobic excipient but are substantially free of any therapeutically active ingredient. The active ingredient in the first spray-dried powder is loaded sufficiently high to compensate for the second spray-dried powder being substantially free of any active ingredient. A process for preparing such formulations is also described.

The invention discloses a welding rod matched with steel for 3Ni-1.6 Cr-0.5 Mo nuclear power equipment for use. The welding rod comprises a high-alkalinity welding rod coating and a low-alloy steel core wire for the welding rod, wherein the coating is formed by mixing a solid component and a liquid component; the solid component comprises the following composition elements in percentage by weight:44%-48% of CaCO3, 20%-25% of CaF2, 6%-8% of TiO2, 0-1% of Na2CO3, 4%-6% of CaSiO3, 1%-3% of MgO, 4%-10% of TiFe, 1%-3% of SiFe and 4%-10% of metal powder containing Ni and Cr, wherein the metal powder comprises 3%-6% of Ni and 2%-4% of Cr; the liquid component is potassium sodium water glass which accounts for the 20-23% of the mass of a mineral raw material dry powder component, the component elements of the core wire comprise component elements of, by weight, C: 0.09%-0.12%, Si: 0.1%-0.23%, Mn: 1.5%-2.0%, P: less than or equal to 0.02%, S: less than or equal to 0.02%, Cr: 1.0%-1.8%, Ni: 2.6%-3.5%, Mo: 0.3%-0.7%, Cu: less than or equal to 0.020%, Co: less than or equal to 0.020%, and the balance of Fe. The welding rod is good in welding adaptability, high in deposited metal strength, good in toughness and good in low-temperature plasticity, and the welding requirements of SA508Gr.4N steel and improved steel thereof developed at the present stage are met.

The invention discloses a traditional Chinese medicine composition for treating skin ulcer and a method for preparing the traditional Chinese medicine composition. The traditional Chinese medicine composition for treating the skin ulcer is prepared from effective raw materials including, by weight, 30-60 parts of lasiosphaera seu calvatia, 40-80 parts of resina draconis, 15-45 parts of ganoderma spore powder, 15-50 parts of fructus hippophae dry powder, 10-30 parts of galla chinensis, 5-20 parts of propolis, 10-30 parts of rhizoma bletillae and 30-60 parts of radix notoginseng powder. The traditional Chinese medicine composition for treating the skin ulcer and the method have the advantages of low cost, stable curative effects and few toxic and side effect.

The invention discloses a two-step sintering preparation method of doped bismuth ferrite-barium titanate-based leadless piezoelectric ceramic, and belongs to the field of leadless piezoelectric ceramic materials. The preparation method comprises the following steps: calculating and weighing according to a chemical formula (1-x) Bi < 1-y > M < y > Fe < 1-z > N < z > O < 3-x > BaTiO3, ball-milling and mixing, drying, sieving, putting into an aluminum oxide crucible, and pre-sintering at 780-950 DEG C for 2-12 hours to obtain pre-sintered powder; performing secondary ball milling, drying at 70-120 DEG C, sieving dried powder, adding 2wt% of polyvinyl alcohol, fully grinding and granulating, and putting the granulated powder into a mold for compression molding; and putting the ceramic blank into a muffle furnace, heating to 300-440 DEG C, discharging glue for 1-2 hours, heating to 950-1050 DEG C, preserving heat for 1-2 minutes, cooling to 900-1000 DEG C, sintering for 6-10 hours, and cooling to room temperature along with the furnace to prepare the required ceramic. According to the two-step sintering method, by ingeniously controlling the two-step sintering temperature and the heat preservation time, the generation temperature interval of an impure phase in the bismuth ferrite-barium titanate-based ceramic can be avoided, and the prepared ceramic is good in crystallinity, uniform in component, small in crystal grain, low in dielectric loss and excellent in insulativity and piezoelectric property.

The invention discloses a preparation method of strontium titanate (SrTiO3) ceramic with high dielectric constant and low dielectric loss. The main technical scheme is characterized by firstly takingSrCO3, TiO2 and Nb2O5 as raw materials, taking the materials according to a ratio of chemical formula expressed as SrTi(1-1.25)xNbxO3, carrying out wet ball milling, mixing and drying to obtain driedpowder, putting the dried powder in an electric furnace, calcining the dried powder for appropriate time under certain temperature and then taking the dried powder out, carrying out wet ball milling,drying and sieving to obtain fine strontium titanate ceramic powder; molding the powder by dry pressing, putting the powder in a high-temperature electric furnace, and sintering for 2 hours at the temperature of 1420-1480 DEG C to obtain the required strontium titanate ceramic. The prepared strontium titanate ceramic has excellent dielectric properties; the dielectric constant of the strontium titanate ceramic can be maintained at 296-303 and is equivalent to that of the ordinary strontium titanate ceramic; the maximum Q*f value is close to 7000GHz and is far higher than that of the ordinary strontium titanate ceramic. The method is simple in process, can easily achieve large-scale production, and has an extremely high practical value.

The invention relates to a method for improving a power factor of a cement-based composite material by pretreating zinc oxide, which comprises the following steps: in the preparation process of the cement-based composite material, pretreating zinc oxide micropowder by using a reducing atmosphere, and doping the pretreated zinc oxide micropowder into the cement-based composite material as a thermoelectric component, thereby improving the thermoelectric power factor of the cement-based composite material. The method for pretreating the zinc oxide micro-powder by using the reducing atmosphere comprises the following steps of: weighing ZnO and Al2O3 dry powder, carrying out uniform mixing, adding absolute ethyl alcohol, putting the mixture a ball milling tank, carrying out ball milling througha planetary ball mill, flatly paving the obtained oxide mixed powder on a corundum plate, and carrying out heat treatment in the reducing atmosphere to obtain pretreated zinc oxide micro powder. Themethod is simple in process, the conductivity of the zinc oxide micro powder is improved, the thermoelectric power factor of the cement-based composite material is greatly improved, and the problem that the power factor is not high due to the fact that the Seebeck coefficient of metal oxide is high but the conductivity is low is solved.

The invention discloses health care green tea, which is prepared from the following ingredients in parts by mass: 20 to 30 parts of green tea, 3 to 5 parts of broadleaf holly leaves, 3 to 5 parts of chrysanthemum flowers, 6 to 8 parts of lotus leaves, 3 to 5 parts of scaphium scaphigerum, 3 to 5 parts of fructus momordicae, 6 to 8 parts of folium ginkgo and 3 to 5 parts of Chinese wolfberry fruitpowder. The ingredients are totally dried; the moisture content of green tea, broadleaf holly leaves, chrysanthemum flowers and lotus leaves is controlled to be 8 to 10 percent; the moisture content of the folium ginkgo is controlled to be 6 to 8 percent; the moisture content of the scaphium scaphigerum and the fructus momordicae is controlled to be 4 to 5 percent; Chinese wolfberry fruit powder is dry powder. The health care green tea has the advantages that the drinking is convenient; the effects of clearing away liver heat, improving eyesight, clearing away heat and toxic materials, eliminating grease, losing the weight and the like can be achieved.

The invention discloses a method for manufacturing a calibration color card of a newborn percutaneous jaundice instrument. The method comprises the following steps: A, preparing solutions: preparing four bilirubin solutions with concentrations of 1 mg/dl, 5 mg/dl, 11 mg/dl and 17 mg/dl by using chloroform and bilirubin dry powder; measuring the spectral characteristics of the bilirubin solution by using a spectrophotometer; b, manufacturing a mold: manufacturing a set of disc-shaped injection mold with the diameter of 50mm and the thickness of 2mm; c, manufacturing a color card: mixing toner into plastic particles for injection molding to obtain an injection-molded color card; analyzing the color card by using a spectrum analyzer, comparing the spectral characteristics with the spectral characteristics of the bilirubin solution, adjusting the toner ratio and weight until the main spectral characteristics of the color card are consistent with the spectral characteristics of the bilirubin solution, and calculating and recording the toner ratio and weight and the concentration of the bilirubin solution corresponding to the toner ratio and weight; adjusting the weight ratio of the toner to the plastic particles to obtain color cards with different color concentrations; according to the invention, the thickness difference of color cards with different concentrations is ensured to be within the range of 0.01 mm, and batch production of the jaundice tester is realized.