236 results about "Solid phases" patented technology

The invention discloses a CFD-based dust explosion calculation method, and particularly relates to the technical field of dust explosion risk assessment. Firstly, initial dust parameters of a target scene are obtained, then a three-dimensional computational domain is established in combination with a geometric structure, ventilation conditions and obstacle distribution, and a dust deposition area is marked; constructing a gas-solid phase coupled dust explosion solving equation set in the CFD framework; outputting time sequence data of pressure, temperature, speed and dust concentration in the whole explosion process, and generating a risk grade distribution diagram based on the maximum explosion pressure and flame coverage time; according to the invention, the propagation and damage process of dust explosion can be accurately reproduced, the simulation precision and efficiency are improved, and the evaluation result can directly guide protection design and safety management.

The invention discloses a reprocessable solid-solid phase change material based on dynamic borate bonds and a preparation method of the reprocessable solid-solid phase change material. Based on the mechanism that boric acid ester is subjected to ester exchange during thermal stimulation, a dynamic cross-linking agent containing boric acid ester is adopted for cross-linking a polyurethane prepolymer, polyethylene glycol is cross-linked through chemical bonds, the tensile strength and the elongation at break of the phase change material are improved, and the problem that the phase change material is prone to leakage in the phase change process is solved; besides, borate bonds belong to associated dynamic covalent bonds and can keep the crosslinking density of the material unchanged when ester exchange occurs under thermal stimulation, so that the thermal stability of the material is relatively good; the solid-solid phase change material disclosed by the invention is excellent in mechanical property, has a relatively high enthalpy value, can be reprocessed, and has an application prospect in the fields of thermal management, energy storage, infrared stealth and the like.

The present invention provides dissimilar material solid phase bonding with which a robust bonded portion of metal materials having different compositions can be formed efficiently. The present invention also provides a dissimilar material solid phase bonded structure having a dissimilar material solid phase bonded portion in which metal materials having different compositions have been bonded together robustly. In the dissimilar material solid phase bonding method according to the present invention, one member is brought into contact with another member to form an interface to be bonded, and newly formed surfaces of the one member and the other member are formed at the interface to be bonded, by means of the application of a bonding load, characterized in that: the one member and the other member have different compositions; the temperature at which the one member and the other member have substantially the same strength is defined as a bonding temperature; and the bonding load at which strength is applied substantially perpendicular to the interface to be bonded is set.

The invention relates to a method for removing sulfur in sulfur-containing sludge. The method comprises the following specific steps: S1, calcining the sulfur-containing sludge at high temperature; s2, mixing the high-temperature calcined sulfur-containing sludge obtained in the step S1 with a sodium chloride solution, and performing wet ball milling to obtain mixed slurry; s3, filtering the mixed slurry obtained in the step S2, and carrying out solid-liquid separation to obtain a solid phase and a liquid phase; s4, an acid leaching reagent is added into the solid phase obtained in the step S3 for acid leaching, and an acid leaching solution is obtained; and S5, carrying out solid-liquid separation on the acid leaching solution obtained in the step S4 to obtain a solid phase and a liquid phase, and washing and drying the solid phase to obtain sulfur-removed sludge. Compared with the prior art, the method is different from a single ion regulation and control technology through a salt dissolution effect mechanism, so that impurities are more effectively removed.

The invention provides a method and a system for evaluating heavy metal pollution of sediment in a sedimentary environment. The method comprises the following steps: obtaining heavy metal content data of a solid phase and a liquid phase of sediment through multiple layers of sediment samples in a target water body sedimentary area; constructing a migration distribution curve of heavy metals in the bottom mud in different depth layers according to the content data of the heavy metals, extracting enrichment characteristics of the bottom mud heavy metals in vertical distribution according to the migration distribution curve, and generating spatial diffusion distribution of bottom mud heavy metal pollution according to the enrichment characteristics; determining the migration activity coefficient of the heavy metal in the bottom mud in a natural state according to the environmental parameters of the bottom mud, the change trend of the heavy metal concentration gradient in spatial diffusion distribution and the heavy metal form; and evaluating the re-release risk level of heavy metal pollution in the target water body sedimentary area according to the migration activity coefficient. By adopting the scheme, heavy metal pollution assessment can be promoted from static total amount analysis to dynamic behavior risk prediction, so that dynamic quantification of bottom mud heavy metal migration activity and accurate early warning of re-release risk are realized.

The invention provides a high-filling particle viscous fluid mixed heat generation and transfer multi-scale simulation method and system, and belongs to the technical field of multiphase flow numerical simulation and heat transfer and friction heat generation coupling calculation. A uniform flow-heat generation-heat transfer coupling solution is constructed under a double-fluid model and a KTGF framework; a drag force model more suitable for a dense particle system is introduced in an interphase momentum exchange link; a BVK drag force model is adopted, and dynamic calculation of an interphase exchange coefficient is realized in a solver through a user-defined function; therefore, the prediction consistency of the solid-phase volume fraction distribution and the relative slip velocity under the high filling condition is improved; particle phase dissipation heat generation, solid-liquid interface friction heat generation and particle-wall surface friction heat generation are introduced as controllable heat source items, and are coupled to a liquid phase and particle phase energy equation according to a set heat distribution coefficient, so that the problem that friction related heat sources are difficult to accurately characterize when only software built-in options are relied on is solved.

The invention provides a method, system and improving method for determining the solid-phase carbon sequestration amount in alkaline solid waste liquid-phase mineralization carbon sequestration, and the determining method comprises the following steps: obtaining the inlet gas carbon dioxide concentration of a bubbling bed reactor, the molar flow of carbon dioxide at an inlet, the carbon dioxide concentration at an outlet and a first duration; wherein the first duration is the duration of the conductivity of the alkaline solid waste slurry from the beginning of the reaction to the lowest point, so as to determine the solid-phase carbon sequestration amount of carbon dioxide in unit time in the bubbling bed reactor, and further determine the total solid-phase carbon sequestration amount in the bubbling bed reactor within the first duration. According to the method, the solid-phase carbon sequestration amount of the carbon dioxide is calculated, and then the reaction working condition with the maximum solid-phase carbon sequestration amount of the carbon dioxide can be selected through comparison of the calculated data, so that the solid-phase carbon sequestration amount is increased.

The invention discloses environmental particulate spherical powder and a preparation method thereof. The preparation method comprises the following steps: selecting artificially synthesized CMAS powder or natural solid particles as a preparation raw material; the preparation method comprises the following steps: sequentially carrying out ball milling, high-temperature melting, quenching and solid-phase sintering on a CMAS powder raw material to obtain a crystalline CMAS block; the method comprises the following steps: carrying out ball milling on natural solid particles or crystalline CMAS blocks to obtain fine particle powder, and obtaining a high-temperature melting characteristic curve of the fine particle powder; preparing the fine particle powder into slurry, and carrying out spray granulation to obtain powder particles with a target size; the powder particles are subjected to low-temperature sintering to remove the binder, then high-temperature sintering densification treatment is conducted, the environmental particulate matter spherical powder is obtained, and the densification treatment temperature is determined based on a high-temperature melting characteristic curve. The prepared powder has excellent flowability and compactness, the particle size range of the powder is controlled to be 20-500 microns, the spherical powder with concentrated particle size distribution can be obtained after screening, and a high-quality and standardized material can be provided for research of aero-engine related thermal protection technologies.

The invention relates to a tail flame polarization state simulation method and device considering solid-phase particle size distribution, a medium and equipment. The method comprises the following steps: constructing a particle size distribution function; determining a cumulative distribution function based on the particle size distribution function, discretizing the cumulative distribution function, and calculating the representative particle size of each region; optical factors of the solid-phase particles in all the areas are calculated; calculating optical parameters of the particle swarm; taking each representative particle size and number density as particle phase input of an N-S equation of fluid mechanics to obtain two-phase flow tail flame flow field data and nozzle outlet data under different particle size distribution conditions; the method comprises the following steps of: taking a plurality of grids as input of a tail flame polarization radiation transfer model, calculating each solid phase parameter of each grid, taking an extinction coefficient and a single scattering coefficient of each cell as input of a two-phase flow tail flame vector radiation transfer equation, and outputting a polarization state of the tail flame. And the tail flame polarized radiation closer to the reality is obtained through simulation.

The invention provides a semi-analytical MPM-DEM coupling numerical simulation method for interaction of debris flow and a structure, and relates to the field of geotechnical engineering disaster simulation. Taking the fine-grain slurry as a continuous medium, and discretizing by adopting MPM; meanwhile, spherical particles and clustered particles serve as solid phases, and DEM modeling is adopted; structures and boundaries are embedded into the computational domain in the form of rigid walls. Through grid-particle information exchange and two-way transmission of particle-grid coupling force, synchronous solution of fluid-solid multiphase coupling is realized. The fluid-solid contact force adopts a semi-analysis mode; the DEM particles and the DEM particle-wall contact are accurately calculated on the basis of a Hertz-Mindlin model, and the DEM particle-wall contact is accurately calculated on the basis of a Hertz-Mindlin model. According to the method, collaborative collision, blockage and impact mechanisms of block stones and floating woods in debris flow are truly represented, and the three-dimensional large-scale situation of million-level fluid mass points and million-level particles is simulated. The simulation result can output key indexes such as the stress time history, the impact peak value and the blockage rate of the structure, and a reliable numerical basis is provided for debris flow protection.

The invention discloses a recoverable high-enthalpy-value solid-solid phase change material and a preparation method thereof. Solid phase constraint of a liquid phase change material is achieved through a topological entanglement effect generated by a hydrogen bond network and polymer macromolecules. The coupling effect of the two limits the movement between low-molecular-weight phase change material molecules at the phase change temperature, and high-temperature solid-solid phase transformation is achieved. The solid-solid phase change material prepared by the method has a high enthalpy value and also has recoverability. In addition, due to the excellent light absorption capacity of the graphene oxide sheet, the graphene oxide sheet has a potential excellent function in the aspect of solar photo-thermal conversion.

The present invention provides a method for evaluating reservoir scaling during water injection, and its application and device. The evaluation method includes: obtaining the ion concentration and cumulative distribution of solid phase particle size before experimental fluid displacement, and the core permeability of the experimental core before displacement; displacing the experimental core with the experimental fluid, obtaining the multi-point pressure and core permeability of the experimental core during and / or after displacement, the cumulative distribution of solid phase particle size after displacement corresponding to at least two cumulative displacement flow rates, and the ion concentration after displacement; obtaining the change in ion concentration based on the ion concentration before and after displacement; obtaining the minimum retained particle size inside the core based on the cumulative distribution of solid phase particle size before and after displacement; obtaining the scaling location based on the multi-point pressure; obtaining the degree of core damage based on the core permeability before and after displacement; and completing the evaluation of reservoir scaling during water injection. The present invention also provides the application and evaluation device of the above evaluation method.

The invention relates to the technical field of chemical machinery, in particular to automatic filtering and drying equipment and method.The automatic filtering and drying equipment comprises a rotary cylinder capable of working in multiple postures, double-layer sleeve fluid conveying assemblies are arranged at the two ends of the cylinder respectively, one end assembly is specially used for liquid phase conveying, central pipe liquid feeding and interlayer liquid discharging, and the other end assembly is specially used for gas / solid phase conveying; the central pipe discharges solid and the interlayer exhausts air, so that thorough isolation of a high-risk liquid phase and a gas / solid phase pipeline is realized on a physical structure, a follow-up heating and control system, an airflow conveying and discharging mechanism and a built-in crushing mechanism are integrated, and full-process automatic closed operation of inverted filtering, rotary drying and upright discharging is realized. The problems of liquid crystallization blockage, sealing failure leakage, danger of manual operation and the like caused by mixed use of pipelines of traditional equipment are fundamentally solved, and the device is particularly suitable for safe and efficient production of lithium hexafluorophosphate and other materials which are high in toxicity, high in corrosion, flammable and explosive, easy to deliquesce and cannot be in contact with air.

The invention relates to the technical field of metal material service behavior testing, in particular to a stress corrosion testing device and a stress corrosion testing method for a solid-phase additive manufacturing joint micro-size sample. The device comprises a micro clamping module for realizing automatic centering and stable clamping; the micro-volume corrosion tank with the volume of 1-20 mL is used for forming a local corrosion environment and can be observed in situ; the external medium circulation and environment control system is used for providing liquid, gas or liquid / gas combined media and rapidly switching the environment; and the loading detection system is used for loading and recording force-displacement data according to a constant strain rate. The gauge length section of the sample is arranged in the corrosion tank, and the two ends are arranged on the clamping module and are accurately centered through the positioning groove and the pin. The micro-volume corrosion tank can quickly establish a corrosion environment, and the external medium circulation and environment control system can regulate and control the temperature, the flow velocity and the atmosphere, so that quick switching of different media is realized. According to the invention, high-precision stress corrosion testing can be realized on a micro additive interface, and the local area sensitivity evaluation capability is improved.

The invention discloses a method for preparing a two-dimensional metal organic framework film through deposition on a gas-solid phase interface. The general formula structures of the three metal-organic frameworks obtained by the method are as shown in a formula I in the specification. According to the method, an organic micromolecule precursor film is prepared on a substrate through thermal evaporation of an organic precursor hexahydroxy triphenylene, and then the target metal-organic framework film is obtained through a gas-phase transportation method in a double-temperature-zone tubular furnace. According to the thought provided by the method, the preparation of the metal-organic framework on various insulating substrates is successfully realized, and a new possibility is provided for realizing the industrial preparation of the metal-organic framework device. The organic precursor is not limited to one type and is also suitable for other organic precursors, in addition, the preparation process is simple, raw materials can be selected from commercial products, and convenience is provided for further research of other scientific researchers in preparation in the field of metal-organic frameworks.

The application provides an alloy solution mechanical and electromagnetic stirring device, and mainly relates to the technical field of die steel smelting. The alloy solution mechanical and electromagnetic stirring device comprises a support frame, a stirring container is fixedly installed on the support frame, a driving motor is fixedly installed on the top of the stirring container, a solution filling hopper is arranged on the top of the stirring container, a support seat is fixedly arranged outside the stirring container, the support seat is fixedly installed on the support frame through bolts, and a buffer pad is arranged between the support seat and the support frame. The application has the beneficial effects that: the application combines mechanical stirring and electromagnetic stirring, can ensure that relative movement between liquid phase and solid phase is generated in different degrees, multi-dimensional shear flow is generated, the breaking, crushing and proliferation of dendrite arms are caused, a large number of dislocations are migrated from grain boundaries to the inside of the crystals, the purpose of refining grains is achieved, the energy consumption requirement in the stirring process can be greatly reduced, and the purposes of energy saving and emission reduction are achieved.

A preparation method of submicron powder of high-entropy nitride via nitride thermal reduction with mechano-chemical assistance, comprising material preparation—grinding—activation—preforming—reaction. In the present invention, high-entropy metal nitride and silicon nitride is used as raw materials, soft mechanochemical activation technologies are used to reduce reaction activation energy of the system, thereafter, by thermal reduction of the nitride, high-purity high-entropy nitride powder is prepared with solid phase methods, and the shortage of high-purity high-entropy nitride powder is addressed. There is no impure phase in the (Hf0.2Zr0.2Ti0.2Nb0.2Ta0.2)N high entropy powder prepared according to the present invention, and a single phase solid solution of good crystallinity is formed, and distribution of elements and ingredients in the powder is even, no foreign element is present, and oxygen content is controlled to be less than 0.3%.

The application discloses a cold-state testing device and method for ammonia-coal mixed fuel turbulent flow, wherein, during the testing process, media with different particle sizes are configured into testing media according to a preset mixing ratio of ammonia-coal fuel, the testing media is carried by primary air into a primary air pipe and into a chamber from an outlet end of the primary air pipe, and secondary air enters into an annular space through a cyclone and is mixed with the testing media entering from the primary air pipe. In this way, the actual mixing state of ammonia-coal mixed fuel in a burner is simulated. A laser Doppler wind speed measuring device is mainly used for measuring the average speed of gas phase / solid phase, the average speed of radial / tangential direction, the root mean square speed, the root mean square speed of radial / tangential direction and the average particle size distribution of particles in the burner, so that the turbulent flow characteristics of the ammonia-coal mixed fuel in the burner are obtained, the change rule of the turbulent flow characteristics in the burner is clarified, and the burner is designed and optimized.

The invention relates to a method and a system for simulating dynamic evolution of a nitrogen element in a melting process of an anti-hydrogen steel laser powder bed. The method comprises the following steps: constructing a three-dimensional model of a powder bed through a discrete element method, and simulating different energy input characteristics by adopting Gaussian, flat-topped, annular and Bessel laser heat sources; establishing a heat transfer model following mass, momentum and energy conservation by using a volumetric method, and setting natural convection, a thermal radiation boundary, recoil pressure and gas-liquid interface changes; according to a macrosegregation and solute migration mechanism, a motion model of a nitrogen element between a liquid phase and a solid phase is constructed, a critical nitrogen content threshold value is introduced, and the gasification escape and bubble forming process of the nitrogen element is simulated. According to the method, on the basis of the molten pool temperature field and flow field detailed nitrogen element distribution / escape simulation result, the molten pool dynamic mode and melt convective heat transfer and mass transfer evolution law under the laser time-domain airspace shaping condition can be clarified, the nitrogen element distribution / escape characteristics are clarified, and the influence mechanism of time-domain airspace laser shaping regulation on pore defect formation is revealed.

The present invention discloses a Ni3ZnC 0.7 @C / g-C3N4 photocatalyst and its preparation method and application, the preparation process includes combining hydrothermal method and solid phase sintering method, firstly using calcination method to prepare porous g-C3N4 nanosheets to increase the specific surface area of ​​the product and the active sites during photocatalytic hydrogen production; then using hydrothermal method to prepare NiZn-LDH / g-4 precursor, further carbonizing to obtain C-coated Ni3ZnC 0.7 Finally, Ni3ZnC with high hydrogen production efficiency was prepared by low temperature annealing. 0.7 @C / g‑C3N4 composite photocatalytic material; the preparation conditions are simple and easy to control, and the production cost is low; Ni3ZnC 0.7 Integrated with C, Ni3ZnC 0.7 @C forms a heterogeneous structure of carbon-coated spherical nanoparticles, which is beneficial to inhibit the agglomeration of nanoparticles and increase the Ni3ZnC 0.7 The specific surface area and active sites of the @C / g‑C3N4 composite photocatalyst and the carbon shell on the surface provide a fast charge transfer pathway for the rapid migration of electrons and ions in the electrochemical process, which can effectively promote the separation and transport of photogenerated charges, thereby effectively improving the hydrogen production efficiency.

The invention discloses a method for resource utilization of copper-containing waste etching liquid and production of high-purity copper hydroxide, and belongs to the field of green cyclic recycling of copper-containing waste liquid. The method for preparing the high-purity copper hydroxide by using the copper-containing etching waste liquid comprises the following steps: mixing the copper-containing etching waste liquid with a crystal form inducer solution, adjusting the pH value to 3.0-8.0, then reacting, carrying out solid-liquid separation to obtain a solid-phase separated substance and filtrate, and carrying out aging treatment on the solid-phase separated substance to obtain a basic copper chloride precipitate; and adding ammonia water and a crystal form transforming agent into the basic copper chloride precipitate, then carrying out aging treatment, and carrying out solid-liquid separation to obtain the high-purity copper hydroxide powder. The prepared copper chloride hydroxide and copper hydroxide powder are large in particle size, the average particle size of the copper chloride hydroxide collection substance is 20-200 microns, and the average particle size of the copper hydroxide powder is 10-100 microns.

This invention belongs to the field of cemented carbide additive manufacturing technology and discloses a method for preparing a high-solids WC-Co water-based slurry for direct-write forming. The invention uses cobalt-coated tungsten carbide powder as the solid phase, which is dispersed in an aqueous solution of ammonium citrate and polyethylene glycol composite additives to obtain a WC-Co water-based slurry with a solid content of 90wt%~93wt%. The slurry of this invention exhibits good shear-thinning properties and extrusion shape retention, with a total dispersant dosage of only 1~1.2wt%. After direct-write 3D printing and debinding sintering, a density ≥99% and a Vickers hardness >1900HV can be obtained. 30 The complex structure of WC-Co cemented carbide components is suitable for the low-cost preparation of high-performance cemented carbide in industrial applications.

The invention discloses a liquid-liquid phase change absorbent and application thereof. The liquid-liquid phase change absorbent comprises the following components in percentage by mass: 20-50% of a main absorbent, 15-65% of a phase splitting agent, 1-15% of a crystallization inhibitor and 0-40% of water, wherein the total mass of the main absorbent is 100%; the crystallization inhibitor includes a combination of a carbonate and a heterocyclic amine. The phase change absorbent disclosed by the invention can be used for capturing CO2, can keep liquid-liquid phase change in a relatively wide temperature range, and can effectively inhibit crystallization, so that liquid-solid phase change can be avoided.

The application discloses a kind of end execution device of gluing machine arm and parameterized efficient high-precision automatic gluing method, end execution device includes installation connecting piece, glue outlet structure and gluing structure;Glue outlet structure includes shell, glue inlet, glue cavity, shunt transition area and at least two shunt glue outlet channels, preferably set three flow channels or two to six flow channels, each flow channel is arranged along the equal interval of gluing width direction, ensure that flow resistance is substantially identical, for the uniform output of colloidal micrometer solid phase particle, reduce single outlet nozzle block and the risk of deflection flow.Gluing structure includes short brush type gluing piece or roller type gluing piece;External glue supply control system carries out prediction and closed-loop adjustment to coating thickness by glue layer thickness parameterization model.The application can realize continuous, uniform, repeatable automatic gluing on complex rough surface, and is suitable for 0.05~0.3 mm glue layer high-precision controllable coating.

A target molecule detection kit used to detect a target molecule includes a first binding element and a second binding element. The first binding element is immobilized on a solid phase. The first binding element has reaction specificity to a first specific binding site of the target molecule. The second binding element is connected to a label that generates a detection signal. The second binding element having reaction specificity to a second specific binding site of the target molecule that is different from the first specific binding site.

The present application relates to a kind of high selectivity molecular sieve based on high-silicon low-calcium fly ash preparation and its preparation method and application, belong to molecular sieve preparation technical field.To solve the problem that molecular sieve crystallization process and high-silicon low-calcium fly ash raw material characteristics do not match, the present application provides the preparation method of high selectivity molecular sieve based on high-silicon low-calcium fly ash preparation, steps include targeted removal Fe2O3 Impurity, silicon-aluminum is activated and dissolved to obtain the silicate gel of controllable water content, using seed and mechanical force coupling direction solid phase crystallization and forming calcination obtain SiO2-Al2O3 Type molecular sieve.The present application improves the purity of molecular sieve crystal to 90~98%, the deviation of pore size distribution is reduced to below 5%, greatly improves the regularity and stability of molecular sieve crystal structure, also improves its adsorption capacity to NH4 + , CO2 And the separation coefficient of NH4 + And other cations, has wide application prospect in wastewater denitrification and carbon capture field.

The invention relates to the technical field of concentration prediction, in particular to a thickener settlement area concentration distribution prediction method, which comprises the following steps: constructing a thickener numerical calculation model; extracting solid-phase pressure and solid-phase volume fraction of each height plane of the thickener after the flow field is stabilized, constructing an interface characteristic index curve based on the solid-phase volume fraction and gradient thereof, constructing a pressure gradient curve based on the solid-phase pressure and the solid-phase volume fraction, and finding out a clarification point and a gel point according to gradient change; dividing the fluid model into a clarification area, a settlement area and a compression area according to the clarification point and the gel point; and constructing a settlement area normalized height variable in the settlement area according to the clarification point height and the gel point height, performing nonlinear fitting according to the settlement area normalized height variable and the solid phase volume fraction, constructing a settlement area concentration distribution function, and realizing concentration distribution prediction of the thickener settlement area. According to the method, the settlement area boundary is precisely defined based on the concentration gradient characteristics and the pressure mutation characteristics.

The invention belongs to the technical field of oil and gas field development and research, and relates to a method and system for predicting the solubility of a non-Newtonian polymer in a forced stretching device and a readable medium, and the method comprises the following steps: obtaining the viscosity of a target polymer after natural dissolution, and fitting an intrinsic equation according to the viscosity; based on the intrinsic equation and the swelling behavior of the polymer particles, establishing a swelling double-fluid model, and inputting the mass transfer rate of the non-Newtonian polymer into the swelling double-fluid model to generate a liquid phase volume fraction and a solid phase volume fraction; inputting the volume fractions of the liquid phase and the solid phase into a component transport equation to generate the mass fractions of all components in the solid phase so as to obtain the solid density; inputting the liquid-phase and solid-phase volume fractions into the group equilibrium model to generate the average particle size of solid-phase particles; coupling output results in the swelling double-fluid model, the component transport equation and the group balance model to obtain the dissolving property of the non-Newtonian polymer. The method can more accurately predict the behavior characteristics of particles in non-Newtonian complex fluid so as to realize the process optimization of polymer rapid dissolution configuration.

The present invention belongs to the field of photothermal conversion materials technology and discloses a sediment-nanosilver composite material, its preparation method, and application. The preparation method comprises: modifying sediment to introduce functionalized functional groups on the sediment surface to obtain modified sediment; the functionalized functional groups are one or more of amino, hydroxyl, and amide groups; dispersing a silver salt and a reducing agent in an aqueous solvent A to obtain a nanosilver precursor solution; uniformly dispersing the modified sediment in the nanosilver precursor solution, sealing, stirring at a temperature of 60 to 80°C, and after solid-liquid separation, sequentially incubating, drying, and grinding the solid phase components to obtain the sediment-nanosilver composite material. The preparation method of the present invention is simple to operate, the raw materials are readily available and low in cost, and it is conducive to promotion and large-scale use. The prepared composite material has good light absorption rate, heat conversion efficiency, adsorption and antibacterial properties, and can be used as a photothermal conversion material and water purification material.