174 results about "Particle separation" patented technology

The invention discloses a self-adaptive air pressure regulation and control system of quartz sand unpowered powder selecting equipment, and relates to the technical field of automatic control. According to the method, wind pressure and airflow disturbance signals are collected, a high-resolution map is generated through Hampel filtering and noise reduction, features are extracted through the convolutional neural network, key influence areas are identified, the problem of unstable wind pressure caused by airflow disturbance in a mountainous area is solved, and the particle separation precision is improved; a natural potential energy distribution matrix is constructed based on building floor height difference, velocity field reconstruction and airflow channel optimization are driven, technological parameters are adjusted in combination with a gradient descent algorithm, precise utilization of natural potential energy is achieved, energy consumption is reduced, uneven efficiency is improved, airflow distribution is simulated through a fluid dynamic model, and sedimentation behaviors are analyzed and predicted through particle trajectory. A support vector machine is used for classifying tracks and generating regulation and control instructions, PID control is used for stabilizing air pressure to form a closed loop, the problems that fine powder is mixed with coarse powder, coarse particles are left and the like are avoided, the equipment blockage risk is reduced, and the product purity stability is improved.

The invention provides a paramagnetic micro-nano magnetic particle magnetophoresis separation device and a paramagnetic micro-nano magnetic particle magnetophoresis separation method, and relates to the technical field of micro-nano magnetic particle separation and magnetic labeled biomolecule separation analysis. The separation device comprises a plurality of permanent magnets which have the same magnetism and the same size and are arranged above the separation channel at intervals in the direction of the separation channel, and a plurality of sets of mechanical structures which respectively drive each permanent magnet to move up and down in the vertical direction; the Hall sensor clings to the separation channel and is used for detecting the magnetic induction intensity at the separation channel; a liquid inlet device; a UV / Vis ultraviolet-visible light detector; a collection device and a computer. The magnetic induction intensity in the separation channel can be set, the critical diameter of the micro-nano magnetic particles capable of being captured by the magnetic field is determined, magnetophoresis separation of paramagnetic micro-nano magnetic particles is accurately achieved, the controllability of the magnetophoresis separation process is enhanced, and the separation effect of the micro-nano magnetic particles is improved.

A debris flow discharge channel, comprising: a main channel through which the debris flow passes; a separation screen detachably connected to the main channel, the separation screen separating the main channel into an upper discharge channel and a lower discharge channel; a first accumulation area in communication with the upper discharge channel; a buffer channel in communication with the lower discharge channel, the buffer channel being provided with transverse energy dissipation ridges and longitudinal flow guide ridges; and a second accumulation area provided behind the buffer channel. The separation screen separates coarse and fine particles, which, in terms of service life, prevents the downstream discharge channel from being damaged by the huge impact force of coarse particles or being blocked by the accumulation, effectively prolongs the service life of the discharge channel, and, in terms of later maintenance, the separation of coarse and fine particles facilitates the maintenance and repair of the downstream main channel, thereby effectively reducing the maintenance cost in the later period.

The invention relates to the technical field of sewage treatment, in particular to a sewage treatment device for ship operation, which comprises a cavity, an oil filtering assembly is movably mounted in the cavity, the oil filtering assembly comprises a sliding frame, a conical filter screen and a buoy, the sliding frame and the buoy are both slidably mounted in the cavity, and the conical filter screen is movably mounted in the cavity. And a rotating shaft is rotationally mounted in the cavity. In the sewage treatment process, the conical filter screen continuously performs alternate operation of forward filtration and reverse washing, the service life of the conical filter screen is prolonged, the sewage treatment efficiency and stability are improved, oil particles are guided to float upwards through the spiral strip, the oil particle collection efficiency is effectively improved, the coalescence effect is enhanced, and the oil particles can be recycled. Through extrusion of the first included angle, continuous and efficient discharge of oil particles is achieved, the situation that the separation effect is affected by local accumulated oil is avoided, the oil particle separation efficiency is further improved, meanwhile, the risk of blockage caused by accumulation of the oil particles on the inner side of the first included angle is avoided, and the stability of sewage treatment is ensured.

The present application relates to graphene material and its preparation technology, specifically to a method for growing graphene on the surface of non-metallic particles on a large scale, which is suitable for large-scale preparation of graphene-coated non-metallic powder material. The present application uses a two-step method to grow graphene uniformly on the surface of a large number of non-metallic particles: first, mix a large number of non-metallic particles with a carbon source, and form a bulk composite material of non-metallic particles and carbon through low-temperature carbonization; then, pass current to the above bulk composite material using electrodes to heat it to a higher temperature, convert the carbon into graphene, until graphene-coated non-metallic particles are obtained, which are separated from each other, and the high-temperature heating process stops spontaneously. The present application can grow a graphene layer on the surface of a large number of non-metallic particles, the method is easy to scale up, and has the characteristics of good uniformity of graphene coating and high particle separation degree; at the same time, by taking advantage of the large resistance of graphene-coated non-metallic particles which are separated from each other, the high-temperature heating process stops spontaneously.

The utility model discloses a profiling air inlet prefilter, which belongs to the technical field of air inlet pipelines of engines and comprises a shell component consisting of a first shell and a second shell, and the first shell and the second shell are welded to form a closed cavity. An air inlet channel inlet is formed in one end of the cavity, and an air outlet and a dust discharging unit are arranged at the other end of the cavity; and a filtering and separating unit is arranged in the cavity. According to the prefilter with the profiling air inlet channel, through the design of the dust discharging unit, the filtering and separating unit and the profiling flow channel, the particle separating efficiency is improved, the air inlet resistance is reduced, the maintenance frequency of the air filter is reduced, and the energy consumption and the cost are reduced.

A method (200) of determining a progress of separation of particles suspended in a liquid in a container (110) of a separation apparatus (100), wherein: said particles are separated from said liquid by sedimentation; said separation apparatus (100) compri- sing a container (110) with a feed inlet and a rotatable rake (120) at its bottom (114); a motor (126) for driving said rake (120); and a pressure measuring device (130), for measuring a hydrostatic pressure at or near the bottom of said container said method (200) comprising: measuring (210) said hydrostatic pressure; driving (220) said rake (120) by means of said motor; obtaining (230) at least one load parameter of said motor (126) during said driving of said rotation; determining (240), especially in real time, a status indicator relating to said separation process, as a function of said hydrostatic pressure and said load parameter, wherein said status indicator comprises: a sedi- mentation index, especially wherein the sedimentation index is indicative of the separation of said particles from said liquid, and / or a feed solid content index, wherein the feed solid content index is indicative of the solid content supplied by said feed.

The invention relates to an apparatus for treating a gas stream containing undesired components, such as sulphur dioxide or mercury, the gas stream coming from a combustion unit (10) in which at least one mineral material can be calcined, and which apparatus in particular comprises a first injection device (162) connected to a second gas / particle separation device (140) such that at least part of the first particles injected into the gas stream by the first injection device (162) at least partly consists of a second particle stream coming from the second gas / particle separation device (140).

The application discloses a screening structure for dredging soil particle separation and a screening method thereof, relates to the technical field of soil particle screening structure, and aims at solving the problems that the existing dredging screening is mostly arranged with many water pipes in a soil stockyard, the flow between soil particles is accelerated through water flow, and the particle grading is improved, however, the method is high in cost and the actual effect is not very ideal. The inside of the screening pool is provided with a first baffle, one side of the upper end of the first baffle is provided with a second baffle, one side of the first baffle is provided with a first separation groove, the other side of the first baffle is provided with a second separation groove, one side of the inside of the screening pool is fixedly provided with a third baffle, one side of the third baffle is provided with a first particle scraping mechanism, one end of the inside of the screening pool, close to a feeding groove, is provided with a second particle scraping mechanism, and one end of the inside of the screening pool, close to a fine soil discharging groove, is provided with a third particle scraping mechanism.

The present disclosure relates to a device and method for the detection of microplastics in aquatic environments. An aspect of the disclosure comprises a device for the detection in situ of microplastics in aquatic environments comprising: an inlet and an outlet; a separation unit, within said inlet and outlet, with at least two arrays of micropillars separated from each other; a sample container, coupled to the inlet of the separation unit, comprising an aeration system; a detection unit aligned substantially perpendicularly to the separation unit; wherein the inlet comprises a coiled tube comprises a length from 25 cm to 125 cm; wherein the separation unit comprises a flow rate comprised from 10 µL / min to 150 µL / min, preferably from 50 µL / min to 150 µL / min, to promote particles separation according to their sizes due to an axial spreading of the particles along the direction of the laminar flow.

The invention discloses a petroleum coke calcination cooling flue gas treatment device with a cleaning function, and particularly relates to the technical field of flue gas treatment, the petroleum coke calcination cooling flue gas treatment device comprises a tank body, a gas inlet pipe arranged on one side of the tank body, a slag discharge port formed in one side of the tank body, and a gas outlet pipe arranged on the upper part of the outer surface of the tank body, a primary treatment structure communicated with the gas inlet pipe and used for cooling flue gas is arranged at the lower part of the inner cavity of the tank body, and a secondary treatment structure communicated with the gas outlet pipe is arranged at the upper part of the inner cavity of the tank body. A closed and stable flue gas purification environment is provided through the tank body, the gas inlet pipe receives pollutant-containing flue gas obtained after petroleum coke calcination and cooling, the primary treatment structure realizes flue gas cooling and particle separation, the secondary treatment structure deeply purifies residual pollutants, the slag discharge port discharges impurities to prevent secondary pollution, and the gas outlet pipe discharges flue gas reaching the standard. The purification efficiency is greatly improved through stage treatment, emission of particulate matter and harmful flue gas is effectively reduced, and atmospheric pollution treatment is assisted to reach the standard.

The utility model belongs to the field of separation devices, and particularly relates to a multi-stage screening type particle separation device which comprises a base, the upper end of the base is fixedly connected with two guide frames which are symmetrically distributed, the outer sides of the guide frames are connected with a vibration frame in a sliding mode, and the upper end of the vibration frame is fixedly connected with a frame. A plurality of uniformly distributed screening hoppers are fixedly connected to the outer side of the frame, screening nets are fixedly connected to the interiors of the screening hoppers, baffles are hinged to the interiors of the screening hoppers, and material taking mechanisms are arranged on the screening hoppers. The vibrating frame, the driving frame, the supporting wheel and other structures are additionally arranged on the base, in the using process, the supporting wheel can be driven to rotate through a motor and belt conveying, and in the rotating process, the supporting wheel can drive the driving frame to move front and back in an eccentric mode; and in the front-back moving process, the screening hopper can be driven to vibrate through the vibrating frame, and therefore the screening efficiency can be effectively improved.

The present application relates to a kind of particle separation device based on adaptive risk control and non-equilibrium vibration, belong to fine coal separation technical field, one of the problems of low separation precision, low efficiency and high energy consumption existing in the uniform air supply and overall balanced vibration of the existing particle air separation equipment is solved.The present application includes fluidized bed bed layer, airflow control unit and non-equilibrium vibration unit;Adjustable restraint mechanism is arranged between upper movable bed layer plate and lower restraint plate, adjustable air duct is formed between adjacent two adjustable restraint mechanisms, the adjustable air duct is communicated with the air distribution hole above and the restraint hole below, when movable bed layer plate moves up and down, the opening and closing size of adjustable air duct changes accordingly;Non-equilibrium vibration unit includes a plurality of first elastic bodies with gradually decreasing elastic coefficient, first elastic body is connected with the bed layer side plate of fluidized bed bed layer, and a plurality of first elastic bodies are arranged along the direction of material layer travel.The present application realizes the non-equilibrium vibration of fluidized bed bed layer and the adjustable air supply.

The utility model provides a desulfurized magnesium sulfite slurry cyclone. The desulfurized magnesium sulfite slurry cyclone comprises: a cyclone; the installation head is fixedly connected to the position, located at the top end, of the outer surface of the cyclone, one end of the installation head is fixedly connected with a feeding pipe, the other end of the feeding pipe is provided with a connecting pipe through a connecting disc, the other end of the connecting pipe is fixedly connected with a filtering pipe with a sealing cover, and the filtering pipe is fixedly connected with the cyclone. A filter plate is mounted in the filter pipe through a mounting buckle, and a butt joint pipe is mounted at the other end of the filter pipe. According to the desulfurized magnesium sulfite slurry cyclone provided by the utility model, by optimizing the structural design and adopting a new anti-blocking technology, the corrosion resistance of the cyclone is improved, the fine particle separation capacity is enhanced, and the blocking phenomenon is reduced, so that the operation stability of equipment is improved, the service life is prolonged, and the maintenance cost is reduced; and the recovery quality and efficiency of magnesium sulfite are improved.

The utility model discloses dust removal equipment for crushing bentonite, which comprises a dust removal cover, a flow guide pipe, a cyclone separator and a bag-type dust remover, and a dust outlet of the dust removal cover is connected with a tangential air inlet of the cyclone separator through the flow guide pipe; a top outlet of the cyclone separator is communicated with an air inlet of the bag-type dust collector through a pipeline; a conical dust collecting hopper at the bottom of the cyclone separator is connected with a dust collecting box through a dust discharging valve; a filter bag group is arranged in the bag-type dust collector, a pulse dust cleaning device is arranged at the top of the bag-type dust collector, and the outlet end of the bag-type dust collector is connected with an induced draft fan through an air pipe; through the combination of the cyclone separator and the bag-type dust collector, the cyclone separator is firstly used for pre-separation, most dust particles are separated out, and then the bag-type dust collector is used for further filtration, so that the overall dust collection efficiency is improved, the cyclone separator is used as a pre-separation device, large-particle dust can be removed in advance, and the dust collection efficiency is improved. The amount of dust entering the bag-type dust collector is reduced, and the loss speed of the filter bag is effectively reduced.

The utility model relates to the technical field of magnetic particle separation, in particular to a magnetic particle separation device which comprises a magnet container with a separation cavity; the first magnet group comprises a plurality of first magnets, the first magnets are arranged on the peripheral side of the separation cavity along the first circumference, and the first magnet group forms a first magnetic field in the whole separation cavity; the second magnet group comprises at least one second magnet, the second magnet is located at at least one end of the magnet container and arranged on the peripheral side of the separation cavity along a second circumference, and the diameter of the second circumference is smaller than that of the first circumference; wherein the magnetization direction of the second magnet group is opposite to the magnetization direction determined according to the magnetization direction rule of the first magnet group, and the second magnet group is used for correcting the first magnetic field at the end part of the separation cavity. The corrected first magnetic field has an annular magnetic field with a larger radius, and the magnetic particles are distributed more uniformly on the wall of the reagent bottle after being separated in the separation cavity.

The application relates to the technical field of solid waste treatment, and discloses a tunnel shield mud treatment system and a treatment method thereof. The system comprises a screening machine, a cyclone separator, a flocculation sedimentation tank, a high-pressure diaphragm filter, a clean water tank and a regenerated water device. The screening machine is used for multi-stage screening and is integrated with a self-adaptive adjusting device. The cyclone separator adopts a two-stage cyclone series structure for coarse and fine particle separation. The flocculation sedimentation tank is equipped with an online water quality analyzer and a reagent feeding device. The high-pressure diaphragm filter is configured with a concentration sensor and an automatic cake unloading device. The clean water tank comprises an ultrafiltration membrane assembly and an activated carbon adsorption tank. The regenerated water device comprises an ozone ultraviolet advanced oxidation system, an electrochemical desalination module and a sodium hypochlorite slow-release disinfection device. Through the technical scheme, the screening efficiency can be improved to more than 95%, the fine particle separation efficiency can reach more than 90%, the effluent suspended matter concentration can be stabilized below 25 mg / L, the moisture content of the mud cake can be reduced to below 14%, the clean water recycling rate can reach 98%, and the overall energy consumption of the system can be reduced by 40%.

This invention provides a magnetic particle separation device that, even with sample containers of the same size as conventional ones, can ensure that the amount of magnetic powder adsorbed in the liquid is approximately the same at both the ends and the center. The magnetic particle separation device comprises multiple sample containers containing a mixture of liquid and magnetic particles, a first magnet disposed relative to each of the multiple sample containers and capable of moving independently up and down relative to the sample containers, a magnetic container covering the first magnet, and a perforated plate having holes capable of holding the multiple sample containers; at least the side portion of the perforated plate near the sample containers is made of a soft magnetic material.

This application discloses a diesel vehicle exhaust particulate separation device and dynamic optimization method based on a dual-frequency sound field. The device has a dual-frequency broadband sound source installed at the inlet of the separation chamber and a dual-wavelength laser monitoring component installed at the outlet, directly connected to the vehicle's CAN bus via a controller. Overcoming the lag of traditional single-frequency blind scanning, it proposes a feedforward initial frequency-feedback frequency modulation closed-loop control strategy: millisecond-level feedforward initial frequency preset is achieved by analyzing engine speed and load signals using a programmed MAP library; red and blue dual-wavelength lasers are used to track the transmittance changes of large and small particles respectively, and a fractional-order update law with an anti-overshoot exponent is introduced to perform microsecond-level dynamic closed-loop optimization of the sound frequency; the power of the fundamental frequency and high-frequency harmonics is dynamically allocated according to the differences in particle concentration of different particle sizes. It possesses functions of prior perception, rapid response, and prevention of getting trapped in local optima, improving the separation efficiency of a wide range of particulate matter of all sizes and effectively reducing the risk of clogging and replacement cycle of particulate filters.

The utility model relates to the technical field of plastic processing, and discloses a feeding device for plastic processing, which comprises a bottom plate, the top of the bottom plate is fixedly connected with a supporting table, the top of the supporting table is fixedly connected with a discharging box, and the top of the discharging box is fixedly connected with an intermittent discharging mechanism. Supporting plates are fixedly connected to the two sides of the discharging box correspondingly, a screening mechanism is fixedly connected to the outer sides of the supporting plates, the screening mechanism comprises a fixing plate, the inner side of the fixing plate is fixedly connected to the outer sides of the supporting plates, and a driving assembly is fixedly connected to the top of the fixing plate; a screening roller is fixedly connected to the inner side of the supporting plate, and first screening holes are formed in the screening roller. According to the utility model, overlarge or irregular material particles are separated out, so that the materials entering the plastic processing equipment are purer, and the materials are classified according to specifications, so that the particle sizes of the materials entering the processing flow are consistent, and the processing equipment can operate more stably.

The invention relates to the field of negative pressure conveying of negative electrode materials, in particular to a negative pressure conveying and feeding anti-agglomeration device for the negative electrode materials, and solves the problems of material agglomeration prevention, automatic material filtering and automatic device cleaning during material conveying. The negative pressure conveying and feeding anti-agglomeration device comprises a negative pressure conveying box, a feeding box and a negative pressure exhaust fan, the feeding box is mounted at the front end of the negative pressure conveying box, and the negative pressure exhaust fan is mounted at the rear end of the negative pressure conveying box; a negative pressure exhaust fan is installed at the rear end of the negative pressure conveying box, a fixing box is fixedly installed on the inner wall of the negative pressure conveying box, and a dispersing plate is arranged on the outer wall of the front end of the fixing box. According to the device, the particle separation phenomenon can be achieved, meanwhile, filtering is conducted through the dispersing plate, the screening function is achieved, materials are subjected to double dispersing and filtering through the dispersing plate, the large block phenomenon can be avoided, meanwhile, particle agglomeration can be avoided, and the situation that subsequent treatment is affected is prevented; the device can be automatically cleaned, and the phenomenon of frequent shutdown for replacement and filtration is prevented.

The utility model relates to the technical field of particle separation, in particular to an activated carbon particle separation filter which comprises a spiral separation tower, a multi-stage filtering assembly and a pneumatic circulation system, a storage hopper is fixedly installed at the top of the spiral separation tower, and a conical barrel is fixedly installed in the spiral separation tower. A material guide cone is arranged in the conical barrel, and a spiral flow guide plate is fixedly installed on the outer wall of the material guide cone. According to the utility model, the defects in the prior art are overcome, fine particles in activated carbon particles can be brought into the cone of the cyclone separator by upflow formed in the conical barrel after the fan is started, and coarse particles overcome the airflow resistance to fall into the third filter bin; and medium particles can be pre-sorted when passing through the first screen and the second screen, and the sorting efficiency is greatly improved in combination with three mechanisms of gravity settling, pneumatic sorting and mechanical screening.

The application discloses a coarse-fine separation mechanism of a grading powder separator and application thereof, and the coarse-fine separation mechanism comprises, from bottom to top, a wind distribution and material distribution area and a pre-scattering and coarse particle grading area which are connected with each other; the wind distribution and material distribution area comprises an air inlet shell, an air inlet, a coarse particle outlet, a flow guide cone and a ring-shaped air ring; the pre-scattering and coarse particle grading area comprises a coarse particle separation shell, a coarse particle separation rotating cage, a material distribution device and a coarse particle separation drive; a material lifting platform is arranged between the coarse particle separation shell and the air inlet shell, and the material lifting platform is located at the outside of the material distribution area outlet and is adjacent to the ring-shaped air ring at the lower side; the coarse particle separation drive is connected with the coarse particle separation rotating cage and the material distribution cone platform through a shaft system, and is used for driving the coarse particle separation rotating cage and the material distribution cone platform to rotate. The application is a kind of mechanism with the functions of scattering, material distribution and coarse-fine particle separation, can be well matched with a traditional dynamic powder separator, complete more clear particle separation, and solve a series of problems caused by the common problems of V selection.

The utility model provides an aluminum hydroxide slurry grading device which comprises a base, a swirler and an electric rotary table, supporting plates are fixedly installed on the two sides of the top of the base, and a fixing plate is jointly installed on the tops of the two supporting plates. Compared with the prior art, the aluminum hydroxide slurry defoaming device has the following beneficial effects that aluminum hydroxide slurry is conveyed into the electric heating copper pipe through the liquid inlet pipe, the electric heating copper pipe is started to heat and defoam the slurry, and the heated and defoamed slurry is uniformly conveyed into the liquid conveying pipes through the bent pipes; due to the fact that the end, located in the swirler, of each liquid conveying pipe is in the bent shape, and the end opening faces the inner wall of the swirler, when the slurry is conveyed into the swirler, the slurry can flow along the inner wall of the swirler, a large number of bubbles cannot be generated, and the phenomenon that particles in the slurry are wrapped by the bubbles, and consequently the slurry particles are separated unevenly is reduced; and the grading effect of the aluminum hydroxide slurry is effectively improved.

The application belongs to the technical field of quick-setting agent preparation, and particularly relates to a production process for preparing a powdery quick-setting agent master batch from aluminum ash and aluminum slag; the production process for preparing the powdery quick-setting agent master batch from the aluminum ash and the aluminum slag comprises the following steps: hazardous waste pretreatment and aluminum particle separation and recovery, ingredient mixing and clinker preparation by calcination, clinker grinding and finished product packaging, and dust removal ash intelligent closed-loop recycling control; the composite activator added in the application can effectively adsorb and fix the chloride ions in the dust removal ash, smooth the fluctuations in the content of Al2O3 in the dust removal ash, induce the early and rapid generation of needle bar-shaped ettringite crystals in the cement paste, significantly shorten the initial setting and final setting times, improve the early mechanical strength, and effectively avoid the late strength reduction; the dust removal ash intelligent closed-loop recycling control step is combined with the composite activator, the recycling ratio is intelligently adjusted through online detection, the ingredient system component is accurately controlled, and the quality of the quick-setting agent master batch product is uniform and stable.

The present application belongs to the technical field of digital image processing, and particularly relates to a kind of iron ore detection method and system based on image recognition, and the method comprises: obtaining iron ore gray scale diagram and extracting gradient direction vector. The degree of local edge morphological distortion is used to identify candidate concave points, and the spatial direction projection and the deviation of the center of gravity are combined to locate the local peak pixel points. Candidate segmentation paths are generated between candidate concave points and local peak pixel points. Based on the statistical difference of gray scale on both sides of the candidate segmentation path and the edge fitting degree, a heterogeneity discrimination index is obtained, and the final segmentation line is mapped to a binary mask to realize iron ore particle separation. The present application reduces the distortion of iron ore particle segmentation caused by moisture adhesion, and improves the sampling precision.

The present invention relates to a method for preparing a metal (copper, molybdenum, zinc, magnesium, silver) colloidal solution using resonant vibration particle separation and cryogenic freezing technology, which is suitable for multiple fields such as engineering, biology and medicine. The present invention proposes a method for preparing a colloidal solution of any one of copper, molybdenum, zinc, magnesium or silver. According to the present invention, the cleaned metal blank is placed in distilled water or deionized water, and a resonant acoustic treatment is performed using an ultrasonic generator, thereby forming metal nanoparticles. Subsequently, the particles are subjected to cryogenic freezing treatment, followed by controlled cryogenic thawing, to obtain a stable metal colloidal solution with a particle size of 1-10 nm. The proposed method can generate nanoparticles of 5 to 50 nanometers in the resonant fragmentation stage, and can be further reduced to 1-10 nanometers during the cryogenic freezing process. This method can achieve a high-stability colloidal solution without the use of chemical stabilizers, avoid the production of toxic byproducts, and extend the storage period of the colloidal solution to 1 year.

The application discloses a liquid metal injection type annular micro-particle fractionation micro-fluidic device and method, relates to the technical field of micro-fluidics and biological particle separation, and comprises a micro-fluidic chip main body which is internally provided with a sample channel, positive and negative electrode channels which are arranged in the micro-fluidic chip main body and are parallelly distributed on the two sides of the sample channel respectively, a liquid metal electrode array which is composed of liquid metal filled and solidified in the electrode channels, and the liquid metal electrode array for generating a non-uniform electric field in the sample channel, wherein the electrode channels are in a meandering and returning structure, so that the liquid metal electrode array forms thick-wall side electrodes in the micro-fluidic chip main body; and the device realizes high-throughput, high-purity and low-damage label-free biological particle separation.

The invention discloses a biomass fuel combustion ash recovery device. The recycling device comprises a supporting base, a combustion furnace, a discharging assembly and a screening recycling assembly, the combustion furnace is arranged at the top of the supporting base, the discharging assembly is arranged at the bottom of the combustion furnace, and the discharging assembly is used for controlling opening and closing of the bottom of the combustion furnace. The screening and recycling assembly is arranged below the discharging assembly in a drawable mode, the screening and recycling assembly is used for receiving and screening ash falling from the combustion furnace and separating fuel particles which are not burnt out for recycling, and the screening and recycling assembly comprises a screening piece and a handle used for manually operating the screening piece. According to the recovery device, unburnt fuel particles and burnt inert ash are physically separated in the deslagging process, so that valuable unburnt particles are independently collected and returned to a combustion furnace, the overall combustion rate of fuel is increased, and the originally wasted heat value is reused for energy production.