17results about How to "Control growth rate" patented technology

The utility model discloses a battery-grade manganous-manganic oxide preparation system which comprises a reaction kettle as well as a first storage tank, a second storage tank and a third storage tank which are connected with a feeding hole of the reaction kettle, the first storage tank is used for storing a slow-release agent, and a first feeding pump is arranged on a conveying pipe, connected with the reaction kettle, of the first storage tank; the second storage tank is used for storing a manganese sulfate solution; a second feeding pump is arranged on a conveying pipe for connecting the second storage tank and the reaction kettle; the third storage tank is used for storing alkali liquor, and a first feeding pump is arranged on a conveying pipe, connected with the reaction kettle, of the third storage tank; the reaction kettle is also connected with an oxidizing agent conveying pipe; a control valve is arranged on the oxidizing agent conveying pipe; a sampling port is formed in the reaction kettle and is connected with the particle size analyzer and the pH monitor respectively; a discharge hole is formed in the bottom of the reaction kettle. According to the utility model, the battery-grade manganous-manganic oxide product with higher purity and better performance can be obtained while the particle size is controlled.

The utility model discloses an assembly structure for synthesizing diamonds by a high-temperature and high-pressure method, which relates to the technical field of diamond synthesis and comprises an outer layer structure, a middle layer heating and insulating system, a core reaction layer and a top covering layer which are sequentially arranged from outside to inside, the outer-layer structure comprises a pyrophyllite composite block, a pyrophyllite ring surrounding the outer side of the pyrophyllite composite block and a conductive steel cap fixed to the top, the middle-layer heating and insulating system comprises a heating sleeve embedded into the pyrophyllite composite block, a heating piece is arranged in the heating sleeve, a magnesium oxide insulating sleeve is wrapped in the heating piece, and the outer-layer structure and the middle-layer heating and insulating system are arranged in the heating sleeve. A vertically supported thick zirconium oxide column is arranged below the heating sleeve, the core reaction layer comprises a magnesium oxide crystal bed, a carbon source is placed on the magnesium oxide crystal bed, alloy is distributed around the carbon source, and the top covering layer comprises a thin zirconium oxide column covering the core reaction layer. The problems that in the prior art, obtained seeds with high carbon content grow fast, but the impurity removal capacity is weak, and the quality is poor are solved; the seeds with low carbon content are good in quality but small in size, and the economic benefit is low.

The invention discloses a graphite-powder-added high-thermal-conductivity devitrification-inhibiting ice crystal material and a preparation method thereof, and belongs to the technical field of ice crystal preparation, the graphite-powder-added high-thermal-conductivity devitrification-inhibiting ice crystal material comprises water and an additive, the additive comprises graphite powder with the particle size of 5-15 microns, a stabilizer, a nucleating agent, an anticorrosive agent, a surfactant and a preservative, wherein the graphite powder is added, so that the heat exchange process in the ice crystal can be accelerated. When the freezing system runs, heat in ice crystals can be transmitted to other parts of the freezing system more quickly through the graphite powder network, so that the freezing process of the ice crystals is accelerated, and the refrigerating efficiency is improved; the stabilizer can ensure that the graphite powder is uniformly distributed in the ice crystal and prevent the graphite powder from precipitating or agglomerating, so that more stable heat exchange and more uniform ice crystal growth can be realized; the nucleating agent can promote nucleation of ice crystals under specific temperature and conditions, so that the growth speed and form of the ice crystals are controlled, and the freezing effect and the product quality can be optimized.

The invention provides a rare-earth-based growth factor ReO-Ac, a hydrocolloid dressing and a preparation method thereof.The rare-earth-based growth factor ReO-Ac is prepared by reacting a reaction solution with a rare-earth nitrate compound solution and a buffer solution as raw materials at the temperature of 100-150 DEG C. The buffer solution comprises acetic acid, sodium acetate and a solvent. The mass ratio of sodium acetate to acetic acid is (0.5-2): 1. The rare earth-based growth factor disclosed by the invention can remove free radicals in a long-acting and lasting manner, provides a favorable environment for a wound to absorb nutrient substances, improves the absorption efficiency of the nutrient substances in a tissue repair process, and integrally improves the human tissue repair speed.

The invention relates to the technical field of facility agriculture. The invention provides a facility sweet cherry substrate bag root-limiting super-high-density cultivation method which comprises the following steps: (1) in the first year after nursery stock field planting, pinching treatment is performed on lateral bud shoots; pruning in winter; (2) in the second year, bud thinning is carried out after top branches begin to germinate due to dormancy; performing pinching treatment on the lateral branches; pruning in winter; (3) in the third year, bud thinning is carried out after top branches begin to germinate due to dormancy; performing pinching treatment on the lateral branches; and pruning in winter. According to the cultivation method, the tree form is improved, and the superfine spindle-shaped tree form is obtained; roots are limited through the breathable matrix bags, vegetative growth of trees is effectively controlled, flower bud differentiation and fruit development are promoted, the yield and quality of fruits are improved, then the water and fertilizer integration technology is utilized, fertilizer waste and environmental pollution are reduced, and green production is achieved.

The present application belongs to the technical field of food baking, and provides a mousse cake layering forming method, comprising: activating the upper surface of the Nth layer of mousse layer which has been solidified, removing the surface condensate frost and forming micro roughness; adjusting the temperature of the N+1th layer of mousse paste to be filled to be within ±3℃ of the surface temperature of the Nth layer of mousse layer; using a low shear force mode, filling the N+1th layer of mousse paste after temperature adjustment into the Nth layer of mousse layer along the inner wall of the mold or through a flow guide device to obtain a multi-layer mousse assembly; precooling the multi-layer mousse assembly at 4-8℃ for 10-20min, and then freezing and shaping at 18-25℃.

The invention relates to a rare earth doped cerium oxide spherical nano composite material as well as a preparation method and application thereof, the preparation method comprises the following steps: mixing a cerium source, a non-cerium rare earth source and a saccharide chelating agent, and sequentially stirring, drying and calcining to obtain the rare earth doped cerium oxide spherical nano composite material, the saccharide chelating agent comprises cane sugar. The carbohydrate chelating agent is adopted, the carbohydrate chelating agent is limited to comprise cane sugar, the dispersity of the cerium source and the non-cerium rare earth source can be improved through hydroxyl of the carbohydrate chelating agent, and the growth speed of crystal grains can be controlled. Furthermore, a cerium source and a non-cerium rare earth source are complexed in a cross-linked structure of a saccharide complexing agent by utilizing a special molecular structure of the saccharide complexing agent, so that the rare earth doped cerium oxide spherical nano composite material which is small in particle size, uniform in morphology and high in specific surface area can be obtained under a calcining condition. The preparation method provided by the invention is green, simple, efficient and low in cost.

The invention relates to a multi-grain-boundary cerium-based catalyst as well as a preparation method and application thereof. The multi-grain-boundary cerium-based catalyst comprises a multi-grain-boundary cerium dioxide carrier and an active component loaded on the carrier, the active component comprises any one or a combination of at least two of copper oxide, manganese oxide or cobalt oxide. According to the multi-grain-boundary cerium-based catalyst, multi-grain-boundary CeO2 is adopted as a carrier, and compared with a traditional single-crystal Ce-based catalyst, the multi-grain-boundary Ce-based catalyst has rich grain boundary defects, so that generation of an oxygen vacancy active structure is promoted, and higher photochemical reaction activity is achieved. The structural advantages are beneficial to adsorption and activation of reactants and generation of active oxygen species, so that the deep oxidation performance of the catalyst on VOCs is remarkably improved. Compared with the traditional thermocatalysis, the application of the photothermal catalysis technology reduces the energy consumption of external heating. The multi-grain-boundary cerium-based catalyst has excellent low-temperature degradation capability and reaction stability, so that the multi-grain-boundary cerium-based catalyst has a good application prospect in purification of VOCs (Volatile Organic Compounds) in industrial flue gas.

The invention relates to the technical field of granulation equipment, and specifically discloses a molecular sieve pelletizing machine and a pelletizing method, comprising a mounting seat, a rotating drum obliquely arranged on the mounting seat, a feeding device and a driving source for driving the rotating drum to rotate counterclockwise, wherein the feeding device is arranged at the right end of the rotating drum for feeding materials into the rotating drum, and further comprises: a plurality of inner drums coaxially arranged with the rotating drum, the inner drums are interconnected and fixedly installed in the rotating drum, a feeding port and a discharging port are provided on the side surface of the inner drum, and the feeding port is located to the right of the discharging port; a distributor is arranged at the right end of the inner drum, and is used for allowing the materials fed into the rotating drum by the feeding device to enter the rotating drum and the inner drum respectively in equal proportions, a spray device sprays an adhesive into a cavity between the rotating drum and the inner drum, and at the same time, the rotating drum rotates to cause the mixed material between the rotating drum and the inner drum to roll to form granular materials, and the large granular materials circulate in the rotating drum and the inner drum for multiple times to control the growth rate of the large granular materials.

The invention belongs to the technical field of crystal growth, and particularly relates to a method for growing a large-size titanium-doped sapphire crystal by a kyropoulos method, which comprises the steps of raw material preparation and filling, heating and melting, temperature regulation and seeding, crystal growth, crystal cooling in-situ annealing and wafer H2 annealing. A high-purity graphite material is adopted to construct a thermal field, thermal field pollution is reduced, temperature distribution is accurately controlled through double heating bodies, and a stable temperature gradient field is formed; raising the temperature, introducing mixed gas of Ar and CO as protective gas, inhibiting adverse reaction in the furnace, and maintaining stable existence of Ti < 3 + > ions in the molten liquid; in the Kyropoulos method crystal growth process, contact with a crucible is avoided, stress concentration is reduced, crystal uniformity is improved, the efficient growth method of the large-size, high-quality and low-defect titanium-doped sapphire crystal is achieved, and the manufacturing requirements of high-end lasers and optical devices are met.

The utility model relates to a high-temperature purification furnace which comprises a furnace body and a fixed table fixed with the furnace body, a heating and heat preservation assembly is arranged in the furnace body, and the heating and heat preservation assembly is connected with the furnace body in a lifting mode through a heating lifting assembly. The heating and heat preservation assembly comprises a heat insulation cage, a plurality of graphite heaters and a heat preservation layer, the graphite heaters and the heat preservation layer are arranged in the heat insulation cage, the graphite heaters are arranged along the circumference, and the heat preservation layer is arranged between the graphite heaters and the inner wall of the heat insulation cage. The heating and heat preservation assembly adopts an isostatic pressing graphite plate type heater, can bear large-current electricity conduction, is good in temperature uniformity, and can be stably used for a long time under the ultra-high temperature condition; the heat preservation layer is made of viscose-based graphite soft felt, and the viscose-based graphite soft felt has the unique air laying technology, has a fiber network structure with high uniformity and ideal chemical performance and good felt body tensile strength, and meanwhile is low in heat conductivity and beneficial to heat preservation. The device has the characteristics of simple structure, convenience in operation and capability of greatly reducing the pollution to the environment.

The present application discloses a high welding tensile force PERC solar front silver paste and a preparation method thereof. The glass powder used in the silver paste is composed of 40% to 50% Bi2O3, 18% to 25% B2O, 9% to 25% SiO2, 1% to 5% BaO, 5% to 10% CaO, 1% to 3% GeO2, and 5% to 10% V2O3 by weight percentage, and inorganic additives are additionally added to the silver paste. The use of the glass powder and the addition of inorganic additives can improve the degree of silver-tin alloying of soldering, improve the firmness of soldering, and make the adhesion per unit area reach 4N / mm 2 .

The invention discloses a data analysis and management method, which belongs to the technical field of data processing, and comprises the following steps: S1, obtaining communication protocol content when a current data packet is transmitted, the communication protocol content comprising a source port number and a destination port number; s2, determining a network session random number and a congestion random number according to the communication protocol content, and generating a protocol content set; and S3, when the current data packet is transmitted, completing data transmission by using the protocol content set. According to the congestion avoiding algorithm, the size of the sending window can be dynamically adjusted according to the network condition, so that network congestion is avoided, the stability and reliability of data transmission are greatly improved, network resources can be more reasonably distributed through the congestion avoiding algorithm, and unnecessary bandwidth waste and delay are reduced.

The application provides a silicon-doped titanium lithium ion sieve and a preparation method and application thereof, and particularly relates to the technical field of ion sieve preparation. 1‑x Si x O3; wherein 0 The silicon-doped titanium lithium ion sieve provided by the application introduces silicon elements in the crystal structure, uses the high-electronegativity tetravalent silicon atoms to replace a small part of low-electronegativity tetravalent titanium atoms, breaks the regularity of rapid formation of titanium-oxygen bonds and rapid growth of [TiO6] octahedrons on one hand, controls the crystal growth speed, perfects the crystal defects at high temperature, and obtains a small-particle-size titanium lithium ion sieve precursor beta-Li2TiO3 at high temperature, and uses the higher stability of Si-O bonds than Ti-O bonds, so that the synthesized lithium ion sieve has higher acid resistance and lower titanium dissolution loss rate.

The application discloses a gradient sintering process for improving the elimination rate of closed porosity of ceramic, and belongs to the technical field of alumina ceramic manufacturing. The process adds lanthanum aluminum oxide core-shell powder as a sintering additive and switches from an air atmosphere to an oxygen atmosphere during sintering and glue removal, realizes gradient sintering, can greatly eliminate closed porosity, improves the density and mechanical strength of ceramic materials, and makes the ceramic materials less likely to crack. The sintering additive is lanthanum aluminum oxide core-shell powder, the structure is a core-shell structure with lanthanum oxide as a shell layer and gamma-alumina as a core layer, lanthanum oxide can reduce the concentration of lattice cation interstitials or produce a grain boundary drag effect, thereby controlling the growth rate of the crystal grains, ensuring the smooth removal of pores, and under oxygen calcination, the concentration of cation interstitials in alumina and lanthanum oxide can be increased, the grain boundary mobility can be controlled to a certain extent during the sintering densification process, and the formation of closed pores is further reduced.

The present invention belongs to the technical field of industrial crystallization, and discloses a process for preparing D-tagatose crystals, which specifically includes the following steps: (1) under the assistance of ultrasound, after adding a seed solution to a saturated D-tagatose solution, the crystals are grown at 50-60°C; wherein, in the process of growing the crystals, materials are added while evaporating and concentrating; (2) after adding hydroxypropyl methylcellulose to the D-tagatose solution obtained in step (1), cooling and crystallizing are performed under infrared spectroscopy; (3) after filtering the D-tagatose solution obtained in step (2), a first filter residue and a filtrate are obtained, ethanol is added to the filtrate to continue crystallization, and then centrifuged to obtain a second filter residue, wherein the first filter residue and the second filter residue are D-tagatose crystals. The method of the present invention shortens the crystallization cycle, has a high yield, and the obtained product has high purity, good fluidity, stable quality, and is suitable for food industry production.

The present invention belongs to the technical field of crystallization kettles, and in particular, relates to a size design method and system for a continuous freezing crystallization kettle, including: determining the production target information of materials in each partition in the continuous freezing crystallization kettle, the production target information is based on the set material state at the inlet and outlet of the continuous freezing crystallization kettle; establishing the association relationship between each partition; establishing a size association model for each partition according to the association relationship, training and optimizing the size association model; applying the size association model to the size scheme prediction of the continuous freezing crystallization kettle. In the present invention, the size of each partition is reasonably designed, which is helpful to control the growth rate and quality of the crystal, avoid the problem of uneven crystal growth, ensure that each functional partition can work in coordination, improve the heat exchange efficiency through optimized size design, comprehensively consider factors such as material properties, operating conditions and expected output, design the optimal kettle size, and improve the overall performance and economy of the equipment.