282 results about "Dissolution" patented technology

The invention relates to the technical field of image data processing, in particular to a water-soluble fertilizer dissolution rate visual measurement method and system, and the method comprises the steps: obtaining a sequence image of a dissolution process; performing multi-scale frequency domain analysis on the image, and calculating a scale convergence index by using the deviation between a local phase and a weighted average phase; a spectral sharpness factor is calculated according to the ratio of the high-frequency energy response to the low-frequency energy response; fusing the scale convergence index and the spectral sharpness factor to obtain a solid boundary probability; segmenting the particle region based on the probability and converting the particle region into physical mass, and differentiating a mass change sequence to obtain a dissolution rate. By fusing the phase consistency and the frequency domain energy distribution characteristics, the physical entity edge and the optical refraction halo are effectively distinguished, the refraction interference problem during high-concentration dissolution is solved, and the dissolution rate measurement accuracy is improved.

The invention belongs to the technical field of ferrous metallurgy, and particularly relates to a method for determining dissolution kinetics of solute in metallurgical slag based on molecular dynamics simulation, compared with a traditional experimental method, molecular dynamics simulation does not need a large number of thermal state experiments and complex detection modes, and large-scale simulation calculation can be rapidly completed on a computer. And meanwhile, various different conditions can be simulated in a short time, and superior processes and slag systems can be quickly screened out. According to the method, the reaction which is difficult to observe clearly can be visualized, the atomic trajectory behavior of the dissolution behavior, the dynamic change, the dispersion process of the solute and the like are provided, rich and accurate information is provided for research on dissolution kinetics, and the dissolution rule and the structure evolution mechanism of the solute in the high-temperature melt can be revealed. In addition, the method is high in safety, and danger possibly brought by a high-temperature experiment is avoided.

The invention relates to a method for recovering platinum in nickel-platinum waste. The method comprises the steps of hot nitric acid dissolution, filtration, pH adjustment, selective precipitation and drying. The characteristic that hot nitric acid can completely dissolve Ni and partially dissolve Pt is utilized to achieve preliminary separation of NiPt, sodium sulfide is used as a precipitator, selective precipitation of platinum is achieved through the Ksp difference of platinum sulfide and base metal sulfide within the pH range of 1-2, the recovery rate of platinum is greatly increased, and energy consumption of the platinum recovery process is reduced. Emission of a large amount of volatile acid is avoided while economic benefits are improved, and the method is more suitable for actual production.

The invention discloses a method for measuring the content of calcium fluoride in dolomite-containing fluorite mine. The method comprises an acetic acid solution, a hydrochloric acid solution, a triethanolamine solution, a potassium hydroxide solution and boric acid. The method for measuring the content of calcium fluoride in the dolomite-containing fluorite mine comprises the following steps: S1, reagent proportioning; s2, preparing a calcium standard solution; s3, preparing an EDTA standard titration solution; s4, selecting an instrument; s5, preparing a sample; s6, step analysis; s7, content correction and determination; and S8, calculating a result. The invention belongs to the technical field of calcium fluoride content determination, and particularly relates to a method for measuring the content of calcium fluoride in dolomite-containing fluorite mine, compared with the prior art, the method solves the problem of dolomite dissolution when calcium carbonate is leached by acetic acid, and the content of calcium fluoride in the fluorite mine can be measured by accurately calculating the dissolution amount of dolomite. The measured calcium fluoride content is clearer, more reasonable and more reliable and approaches to a true value, and the process operation is simple and rapid, and is suitable for the requirements in the fields of mine production, assay detection and the like.

The invention belongs to the technical field of hydrogen sulfide stress corrosion resistance detection of oil well pipes, and particularly relates to a method for testing the influence of anodic dissolution in saturated hydrogen sulfide on stress corrosion fracture of an oil well pipe, which comprises the following steps: respectively carrying out slow strain rate tensile tests in a saturated hydrogen sulfide environment and a nitrogen environment to obtain a stress-strain curve of an oil well pipe sample; measuring a hydrogen permeation curve of the oil well pipe sample in the saturated hydrogen sulfide environment; carrying out fast and slow sweep potential polarization curve test and hydrogen permeation curve test on the oil well pipe, and carrying out hydrogen charging-slow stretching test on the oil well pipe under the cathode hydrogen charging potential corresponding to the steady-state hydrogen permeation current density; and according to the damage degree of the saturated hydrogen sulfide environment to the mechanical properties of the oil well pipe, the minimum influence degree of hydrogen in the saturated hydrogen sulfide environment to the stress corrosion fracture of the oil well pipe is determined by combining the damage degree of hydrogen separated out from the cathode reaction to the mechanical properties of the oil well pipe. The device has the advantages of simplicity in operation and accurate measurement result.

The invention relates to the technical field of underground hydrogen storage, and discloses an underground hydrogen storage prediction method coupled with a chemical reaction. The method comprises the following steps: determining the hydrogen leakage flux of the underground hydrogen storage according to reservoir information of the underground hydrogen storage based on the Darcy law; according to three-phase substances including mineral composition, solution composition and gas composition of the underground hydrogen storage, a physical model containing a mineral-fluid-gas storage three-phase substance equilibrium relation of the underground hydrogen storage is established by utilizing the law of conservation of substances; according to the dissolution trends of different minerals in the underground hydrogen storage under the hydrogen-fluid-rock chemical reaction system, a dissolution kinetic model of the different minerals is established; and according to the hydrogen leakage flux, the coupling physical model and the dissolution kinetic model, obtaining the change conditions of mineral composition, solution composition and gas composition in the underground hydrogen storage library caused by hydrogen-fluid-rock chemical reaction under the hydrogen leakage flux, so as to predict the hydrogen storage condition of the underground hydrogen storage library.

The invention relates to the field of modern processing of traditional Chinese medicines, and particularly provides a low-temperature crushing preparation process and application of a traditional Chinese medicine composition. According to the process, medicinal materials are pre-frozen at the temperature of-40 DEG C to-30 DEG C to be subjected to glassy transition, and the synergistic effect of vortex airflow crushing and a high-frequency ultrasonic field under the protection of liquid nitrogen is combined, so that the crushing temperature is controlled to be less than or equal to-30 DEG C, and the ultrafine particle size D90 is less than or equal to 15 microns. Meanwhile, a three-stage gradient cold trap (-80 DEG C,-120 DEG C and-196 DEG C) is adopted to recover volatile components, and a surface modifier is immediately added after crushing to inhibit powder agglomeration. The process solves the problems of degradation of thermosensitive components, dissipation of volatile components, overlarge particle size and the like in traditional crushing, so that the retention rate of the thermosensitive components is greater than or equal to 95%, the volatile loss rate is less than or equal to 3%, and the dissolution rate is increased by 2.8 times or more. The obtained powder can be directly applied to acupoint application, powder inhalation and transdermal preparations, and the requirements of a novel drug delivery system are met.

The present application relates to the technical field of reservoir diagenetic strength prediction characterization, and more particularly to a simulation method for offshore deep reservoir dissolution strength, which is characterized in that, according to the relationship between the parameters of diagenetic fluid channels and the reservoir dissolution strength, the diagenetic fluid channels are mathematically characterized, a reservoir dissolution factor calculation model under the guidance of fault parameters is constructed, the model can calculate the dissolution strength in the vertical direction of a single well, and finally, the longitudinal distribution curve of the dissolution factor calculated by the model is combined with seismic data to perform inversion simulation, spatial simulation and prediction of the reservoir dissolution strength, so that quantitative evaluation of the reservoir dissolution effect can be realized. The present application constructs a dissolution factor prediction calculation model based on the quantitative relationship between the dissolution strength and the diagenetic fluid channels, and performs calculation from the cause mechanism of dissolution, so that the rationality and accuracy of the characterization are improved.

A dissolution determination apparatus and an operating method thereof are provided. The dissolution determination apparatus may include: a dissolution determination apparatus may include: a reader configured to read identification information of a container that accommodates a target sample; a driving module including at least one body, the at least one body of the driving module configured to open the container and move the container to a capturing position; an image obtaining module configured to obtain, at the capturing position, at least one image of the target sample while the container is open; and at least one processor configured to automatically determine whether the target sample is dissolved by analyzing the at least one image of the target sample based on the identification information of the container.

The invention discloses a method for in-situ leaching mining of sandstone uranium ore, the concentration of bicarbonate radical ions in ore bed water in the sandstone uranium ore is lower than 0.5 g / L, the sandstone uranium ore comprises yttrium-containing uranium ore, and the carbonate content is 1.5%-2.5%; the ore bed water serves as a solvent, 500 mL of leaching agents with different pH values adjusted through sulfuric acid are prepared, and the concentration of hydrogen peroxide in the leaching agents is 2 g / L; and determining the maximum pH value when the uranium ore in the slice sample is corroded by using the leaching agents with different pH values, and taking the maximum pH value as a critical pH value. The leaching agent with the critical pH value is used for exploiting the sandstone uranium ore, corrosion to gangue minerals in the leaching process can be reduced, the number of formed colloids and CaSO4 precipitates is reduced, the precipitates are prevented from blocking an ore bed, in addition, the method can be used for target corrosion of the refractory uranium ore, and therefore efficient leaching is achieved.

The utility model discloses an accelerated dissolution instrument for chemical analysis, which relates to the technical field of accelerated dissolution instruments and comprises a base, an annular seat is fixedly connected to the upper side of the base, a sliding table is fixedly connected to the upper side of the base, a lifting plate is slidably connected to the front side of the sliding table, and a motor is fixedly connected to the upper side of the lifting plate. The lower side of the lifting plate is fixedly connected with a plurality of guide columns, and the lower ends of the guide columns are fixedly connected with a cover plate. Through the mutual cooperation of the driving shaft, the fixed column, the rotating shaft, the stirring rod, the limiting strip, the annular chute, the first connecting plate, the telescopic column, the second connecting plate and the spring, the stirring rod can be stirred up and down in a reciprocating manner in the stirring process, and solute and solvent in a solution can be fully mixed in the vertical direction through up-and-down reciprocating stirring, so that the stirring efficiency is improved. And on the basis of single rotary stirring, the stirring dimension in the vertical direction is increased, so that solute particles can be more quickly dispersed into the whole solution system.

The invention provides a high-density solute and a preparation method thereof, the high-density solute comprises a solute body and an instantizer used for assisting the solute body to be uniformly dissolved in water, and the instantizer can react with water to generate the solute body. Through the combined design of the solute body and the instantizer, the high-density solute provided by the invention not only has the characteristic of high density so as to improve the solute loading capacity under the same volume, but also can remarkably accelerate the dissolution rate of the solute body by virtue of the characteristic that the instantizer is preferentially dissolved and reacts with water to generate the solute body, so that rapid and uniform dissolution is realized; no extra impurities are introduced in the whole process; the solute is suitable for the field where the solute needs to be rapidly and uniformly dissolved, and stability and reliability of solute supply in an application scene are effectively guaranteed.

The embodiment of the invention discloses a method and a device for preparing 212Pb based on 226Ra, and the method comprises the following steps: carrying out reactor irradiation treatment on a target material containing 226Ra to obtain an irradiated target material; and dissolving the irradiation target material to obtain a target material dissolving solution. The target material dissolving solution is placed in a first separation column to be subjected to first acid leaching treatment, a Th-containing adsorption column is obtained, and the first separation column is used for adsorbing Th. And carrying out second acid leaching treatment on the Th-containing adsorption column to obtain a Th-containing eluent. And carrying out standing treatment on the Th-containing eluent to obtain a standing solution containing 228Th. And the standing liquid containing 228Th is placed in a second separation column to be subjected to third acid leaching treatment, eluant containing 212Pb is obtained, and the second separation column is used for separating lead.

The invention belongs to the technical field of dissolution instrument calibration, and particularly relates to a dissolution instrument rotating shaft calibration device which comprises a laser displacement sensor for calibrating a shaft rod of a dissolution instrument and a perpendicularity calibration unit. The base body is detachably arranged at the cup opening of the dissolution cup through a limiting buckling assembly; the bending plate is arranged on the base body; the power assembly is arranged on the bending plate, is matched with the base body and is used for driving the bending plate to do circumferential rotation around the cup opening of the dissolution cup; the radial pushing assembly is used for arranging the laser displacement sensor or the perpendicularity calibration unit on the bending plate and pushing the laser displacement sensor or the perpendicularity calibration unit to move in the radial direction of the dissolution cup; according to the scheme, the laser displacement sensor and the perpendicularity calibration unit can be in an automatic state to calibrate the shaft lever, so that the calibration accuracy of the rotating shaft of the dissolution tester can be improved.

The invention belongs to the technical field of rock mechanics, and provides a method for preparing a three-dimensional fractured sample by combining CT scanning with induction heating in order to solve the problem that a sample structure is easy to damage when a rock mass sample containing a through fracture network is prepared at present. According to the method, firstly, a metal cavity network highly consistent with a natural fracture shape is reconstructed and printed based on CT scanning data of a real rock mass, and the authenticity and complexity of a sample fracture structure are greatly improved; in a demolding link, an internal metal structure is selectively melted by utilizing an induction heating technology and naturally flows out through a preset through hole under the action of gravity, and a sample is static in the whole process and does not need complex mechanical movement, so that physical and chemical damages of a chemical solvent dissolution method to a sample matrix are avoided; and the limitation that demolding is difficult in a traditional pre-embedding method is overcome, finally, the rock mass sample reserving the high-fidelity through fracture network can be efficiently and nondestructively prepared, and a reliable technical means is provided for deeply researching the characteristics of mechanics, seepage and the like of the fractured rock mass.

The present invention relates to automated operations for the preparation of medicaments, in particular image-based progression and / or result verification, and / or detection of fault conditions related to dissolution of a medicament material contained in a vial. In some examples, imaging and image processing are used to track the progression of a process that converts solids and / or concentrated materials (e.g., crystallized and / or lyophilized) to fluid solutions and / or suspensions. The dilution time may change along with the change of conditions; detection of fault conditions may reduce risk and / or reduce waste. In some examples, the amount of fluid used in dissolution / dilution itself is monitored at one or more stages. The invention also relates to methods of evaluating the fluid content of vials, including vials dispensed for manual manipulation, which may include viewing obstructions, such as labels.

The invention provides a method for detecting the content of magnetic substances in lithium carbonate. The method comprises the following steps: S1, carrying out sample collection and pretreatment; s2, accurately weighing the sample and fixing the volume of the sample; s3, carrying out gradient magnetic field magnetic separation and enrichment; s4, carrying out ultrasonic-assisted washing and purification on the enrichment liquid; s5, magnetic substance precipitation dissolution and constant volume are carried out; s6, a step of carrying out ICP-MS instrument calibration and parameter optimization; s7, carrying out detection mother liquor determination and multivariate statistical error correction; s8, carrying out blank experiment correction; s9, carrying out parallel experimental verification; s10, a result calculation and judgment step is carried out; and S11, carrying out method verification and filing. According to the method, the problems in the prior art are creatively solved by organically combining gradient magnetic field separation and enrichment, ultrasonic-assisted purification, ICP-MS (Inductively Coupled Plasma Mass Spectrometry) accurate detection and multivariate statistical error correction aiming at the core pain point of the existing technology for detecting the magnetic substances in the lithium carbonate.

This invention provides a precise method for detecting phosphorus content in high-matrix copper-phosphorus alloys, belonging to the field of chemical analysis technology for metallic materials. The detection method of this invention includes the following steps: S1: Sample pretreatment; S2: Sample dissolution and volume adjustment; S3: Solution pretreatment: Nitric acid, hydrochloric acid, and deionized water are added to the solution and boiled to remove volatile impurities; S4: Precipitation formation: Ammonia water is added to the solution to adjust the pH to 8.5-9.5, and ammonium citrate-EDTA masking agent is added; quinomolybdate-limonene precipitant is slowly added under simmering conditions, and boiling is carried out for 10-15 minutes with intermittent stirring to ensure complete phosphorus precipitation; S5: Filtration, washing, drying, and weighing; S6: Calculation of phosphorus content. Compared with existing technologies, this invention, through a unique combination scheme, suppresses the hydrolysis of copper ions and the interference of coexisting elements, enabling precise detection of phosphorus content in high-matrix copper-phosphorus alloys. It has advantages such as strong resistance to matrix interference, high detection accuracy, good reproducibility, wide applicability, low detection cost, and simple operation.

The invention discloses a calcined muck activity evaluation method based on combination of macroscopic mechanical properties and microscopic ion dissolution performance. The method comprises the following steps: pretreating building muck; calcining the muck at different temperatures; carrying out an ion dissolution test to determine the dissolution concentrations of Ca < 2 + >, Al < 3 + > and Si < 4 + >; mixing the calcined muck cement mortar test piece, and measuring the fracture resistance / compressive resistance of the calcined muck cement mortar test piece; and finally, comprehensively evaluating the activity of the calcined muck by combining the ion dissolution concentration of the calcined muck in the alkali liquor and the test result of the mechanical strength of the test block. Through macro-micro combination, false coagulation phenomenon misjudgment is avoided, multi-dimensional and dynamic evaluation of activity is realized, long-term performance can be accurately predicted, a calcination process can be optimized, and the method is suitable for resource utilization of muck of different sources and has comprehensiveness, accuracy, high efficiency and environmental benefits.

The application provides a high-drug-loading porous breviscapine crystal and a preparation method thereof. The crystal is prepared by a solvent diffusion method, does not contain auxiliary materials, and has high drug purity. The crystal is a highly porous, spherical, round, particle-size-controllable, large-particle-size crystal particle, and is easy to implement in an industrial scale. The process is green, and the crystal is crystallized in an aqueous solution. The solvents used can be recycled and reused. The porous breviscapine crystal prepared by the application has rapid in-vitro dissolution, improved flowability and compressibility, and is beneficial to further preparation molding.

The invention relates to the technical field of carbon sequestration and geological sequestration, and particularly discloses a slice CO2 water-rock reaction corrosion identification and pore evaluation method based on machine learning, and the method comprises the steps: firstly collecting multi-focal-plane images of the same view field of a slice before and after a reaction on a scanning electron microscope platform, and carrying out the registration; utilizing the trained U-Net instance segmentation model to automatically identify a corrosion area and extract a contour; generating a relative height map through a depth-of-field reconstruction and calibration technology in combination with a multi-focal-plane sequence, and obtaining the effective corrosion depth of each corrosion area; and carrying out volume normalization calculation based on area-depth information, and directly outputting porosity increment and spatial distribution thereof. According to the method, destructive detection is not needed, quantitative volume characterization of corrosion characteristics is achieved, the analysis efficiency and accuracy are remarkably improved, batch processing and mineral phase layering statistics are supported, and reliable data support is provided for CO2 geological storage reaction mechanism research and reservoir simulation.

A method of estimating dissolution progress of a salt in construction of a salt cavern includes: defining, for each of a plurality of parameters, an operable range of respective parameter and an average value of the operable range of respective parameter; performing a plurality of flooding tests, by varying one particular parameter among the plurality of parameters from a lowest value to a highest value in the operable range of the one particular parameter and keeping all other parameters at the average value of respective parameter; and obtaining an analytical relationship of a mass of dissolved salt versus the one particular parameter.

The present invention relates to a mixing unit for mixing two or more fluids, particularly fluids including biological materials sensitive to shear, wherein the mixing unit comprises: a first inlet receiving an inflow stream comprising a first fluid and a second fluid; and a channel structure fluidly communicating with the inlet, wherein the channel structure comprises: a first branching section dividing the inflow stream into first and second primary branching streams; first and second primary channels configured to pipe one of the individual primary branching streams; and a first collection storage section recombining the primary branching streams; and wherein the first and second primary channels fluidly communicate with the first branching section and the first collection storage section.

The application discloses a kind of faulted dissolution body reservoir oil well producing depth acquisition method, device, equipment and medium.Faulted dissolution body reservoir oil well producing depth acquisition method includes: obtaining the temperature well testing monitoring data of target faulted dissolution body reservoir oil well;Temperature well testing monitoring data is handled, and actual temperature well testing interpretation curve is obtained;Temperature well testing model of target faulted dissolution body reservoir oil well is constructed, and the theoretical temperature well testing interpretation curve corresponding to multiple heat transfer distances is obtained based on temperature well testing model;Comparative analysis actual temperature well testing interpretation curve and theoretical temperature well testing interpretation curve, the heat transfer distance corresponding to the theoretical temperature well testing interpretation curve most matched with actual temperature well testing interpretation curve is determined as the producing depth of target faulted dissolution body reservoir oil well.Using the present application can reduce the uncertainty of faulted dissolution body reservoir producing depth calculation, improve the accuracy of producing depth calculation.

The present application belongs to the field of pharmaceutical analysis, and particularly relates to a dissolution determination method for soft capsule preparation, which installs a screen on the upper side of the stirring paddle of a dissolution device, so that when the soft capsule shell has a large crack and large oil drops appear, the large oil drops can be dispersed into small droplets through the screen, thereby ensuring that the drug dispersion measurement result in the dissolution cup is scientific and reasonable.

The application discloses a carbonate rock fracture classification detection method, and relates to the technical field of oil and gas reservoir exploration, and has the technical scheme as follows: in view of the problem that the complex characteristics of a carbonate fracture wave field affect fracture detection effect, attribute analysis is performed on original seismic data of a target area, the fracture is classified into a strong dissolution area and a weak and non-dissolution area, a tensor thinning attribute body is used as a fracture prediction result of the strong dissolution area, and a conventional coherent fracture detection result is used as a fracture prediction result of the weak and non-dissolution area. Through the classification detection technology, the influence of the string-bead anomaly is effectively eliminated, strong dissolution fracture detection results are formed, and the conventional medium and small scale fractures with phase axis disturbance and fault representation are reserved, so that the two are organically fused in space, and the carbonate rock fracture detection precision is effectively improved.

A method for increasing the BEMT content in a composition comprising 2,4-bis[4-(2-ethylhexyloxy)-2-hydroxyphenol]-6-(4-methoxyphenol)-1,3,5-triazine (BEMT), the method comprising the steps of: a) providing a composition comprising BEMT and impurities; b) dissolving the composition in a solvent mixture at a first dissolution temperature to produce an unsaturated BEMT solution, wherein the solvent mixture comprises at least one polar solvent; c) lowering the temperature of the unsaturated BEMT solution to a saturation temperature, wherein the saturation temperature is below the first dissolution temperature, to produce a saturated BEMT solution; d) further lowering the temperature of the first saturated BEMT solution to a first crystallization temperature, wherein the first crystallization temperature is below the saturation temperature, thereby producing a supersaturated BEMT solution; e) during step d), adding BEMT seed crystals in an amount ranging from 0.00001 wt.-% to 20 wt.-% relative to the total weight of the composition to the supersaturated BEMT solution to produce a first BEMT suspension comprising BEMT particles; f) a) Heating the first BEMT suspension to a second dissolution temperature to produce a second BEMT suspension containing fewer BEMT particles than the first BEMT suspension, wherein the second dissolution temperature is higher than and lower than the first crystallization temperature; g) Cooling the second BEMT suspension to a second crystallization temperature to produce a final BEMT suspension containing BEMT particles larger than those in the first BEMT suspension; h) Separating these BEMT particles from the final BEMT suspension, wherein the second crystallization temperature is lower than the first crystallization temperature.

The present application relates to phosphogypsum resource utilization technical field, the present application is a kind of production method for improving the quality of water washing phosphogypsum, comprising the following steps: S1, gypsum forced dissolution, S2, induced crystallization and crystal phase directional transformation, S3, separation and recovery;The present application is by controlling suitable conditions, the dissolution rate of small crystalline in fresh phosphogypsum is accelerated, so that intercrystalline phosphorus is quickly released and converted into water-soluble phosphorus into liquid phase, composite crystallization agent is added in crystallization tank, and dissolved crystalline is directional crystallization, newly generated crystalline is thick and neat, intercrystalline phosphorus fluoride is reduced, easy to wash, the total phosphorus of phosphogypsum after purification treatment is reduced, and water-soluble phosphorus and water-soluble fluorine of the washed gypsum are further reduced.

The invention belongs to the technical field of unconventional oil and gas development, and particularly relates to a gas-water-rock reaction and particle dissolution-migration in-situ visual quantitative determination method and device based on a micro-fluidic chip. The quantitative determination method comprises the following steps: firstly, designing a chip model containing a real rock core, wherein factors such as a strong heterogeneous structure of the compact conglomerate oil reservoir and strong difference of a pore throat structure are considered at the same time; then, the gas-water-rock reaction and the particle dissolution-migration process are recorded through an optical camera; and finally, analyzing contribution degrees of different minerals to a gas-water-rock reaction and judging different corrosion modes of the conglomerate by combining image processing software and a mathematical model. The method can be used for carrying out in-situ visual quantitative determination on gas-water-rock three-phase reaction, particle corrosion and a secondary migration process in the conglomerate reservoir under the conditions of oil reservoir temperature pressure and fluid chemistry.