211 results about "Crystalline particle" patented technology

The invention relates to a deep sewage defluorination method based on NH4F.LaF3 chemical precipitation, which comprises the following specific steps: adding a solution containing NH4 < + > and La < 3 + > into fluorine-containing water, adjusting the pH value of the sewage to 6-8, and carrying out NH4F.LaF3 chemical precipitation reaction; sediment is discharged, crystal particles in supernate are removed, deep defluorination of the sewage is achieved, and the concentration of fluorine ions in the water after defluorination can be stably lower than 1 mg / L. According to the method disclosed by the invention, by utilizing the characteristic that the solubility of double salt NH4F.LaF3 is very low, NH4 < + > ions (ammonium chloride or ammonia water and hydrochloric acid) and La < 3 + > ions (lanthanum chloride or lanthanum oxide and hydrochloric acid) are added into the fluorine-containing wastewater, so that equivalent reaction of fluorine, lanthanum ions, ammonium ions, fluorine ions and the like in the water is removed, and the addition of a medicament does not need to be excessive. The method has the characteristics of high efficiency and low cost, and has the advantages of small dosage of chemicals, high reaction speed, thorough reaction and low concentration of fluorine in effluent.

The invention discloses a lighting device and a vehicle, and the lighting device comprises a support, a light-transmitting cover plate, a light source assembly and a light scattering part. The light-transmitting cover plate is connected to the support, so that a containing cavity is formed between the light-transmitting cover plate and the support. The light source assembly is installed on the support. The light scattering part is arranged in the containing cavity, a plurality of first areas and a plurality of second areas are arranged on the light scattering part, at least part of the first areas and at least part of the second areas are alternately distributed, and one or more crystal particles used for reflecting light in different directions are arranged in the first areas and the second areas. A size of the crystal particles in the first region is smaller than a size of the crystal particles in the second region. According to the invention, the first region and the second region are arranged at different positions on the light scattering part, and the crystal particles with different sizes are arranged in the first region and the second region, so that different reflection effects can be presented through the reflection effects of the crystal particles in different regions on light rays; the visual effect of different brightness can be achieved when the lighting device is observed at different visual angles.

The invention provides a ZSM-12 molecular sieve with a hollow structure and a preparation method thereof, the crystal form is a ZSM-12 molecular sieve structure, the ZSM-12 molecular sieve structure is characterized as a single crystal particle crystal with a hollow structure through a transmission electron microscope, the center part of the crystal is hollow, and the hollow structure is presented. The preparation method comprises the following steps: firstly, contacting a ZSM-12 molecular sieve with water vapor for treatment, then washing, separating and drying to obtain a material, uniformly mixing the material with inorganic alkali, an aluminum source, a silicon source and water for reaction, and finally washing, separating, drying and roasting to obtain the ZSM-12 molecular sieve. The invention provides a brand-new method for synthesizing the ZSM-12 molecular sieve with the hollow structure, the problem that the ZSM-12 molecular sieve with the hollow structure cannot be obtained by an existing method for synthesizing and preparing hollow zeolite in the field is solved, and the preparation method provided by the invention is simple in process route and suitable for large-scale industrial production.

The invention provides a crystal filtering device for chemical product processing, and belongs to the technical field of chemical product production, the crystal filtering device comprises a rack and a mother liquor tank arranged in the rack, the interior of the mother liquor tank is rotatably connected with a rotary drum, the surface of the rotary drum is provided with filter cloth, and the interior of the rotary drum is uniformly provided with filter chambers in the circumferential direction; a first negative pressure pipe and a second negative pressure pipe are arranged in each filter chamber; a supporting cylinder is arranged at the upper end of the rack, the front end of the rotary drum is rotationally connected with the supporting cylinder, a distribution ring rotationally connected with the rotary drum is arranged in the supporting cylinder, and a liquid drainage assembly matched with the distribution ring is arranged in each filter chamber; part of liquid can be reserved in the filter chamber, crystal particles on the wall face and corners of the filter chamber are fully wrapped and discharged into the supporting cylinder through liquid flowing in the liquid discharging process, the risk that the interior of the filter chamber is blocked is reduced, and the number of times of shutdown cleaning is reduced.

The invention belongs to the field of 4-trifluoromethyl nicotinic acid manufacturing, and particularly relates to a crystal particle drying device and method for 4-trifluoromethyl nicotinic acid manufacturing. A cylinder body is arranged on the bottom plate; a first drying cavity is formed in the cylinder body, openings are formed in the two ends of the first drying cavity, and the cross section of the first drying cavity is circular; a first annular cavity is formed in the cylinder body, and the first annular cavity is arranged around the first drying cavity; an annular partition plate is fixedly connected into the first annular cavity. The first annular cavity is divided into a second drying cavity and a third drying cavity by an annular partition plate, and the third drying cavity is arranged around the second drying cavity; the side wall of the first drying cavity and the annular partition plate are each provided with a set of screen holes. The problem that the internal structures of small crystal particles are damaged due to too long drying time is solved.

The invention provides a ternary positive electrode material and a preparation method thereof, a positive electrode plate, a secondary battery and electronic equipment, the ternary positive electrode material comprises crystal particles, the crystal particles comprise a first doping element, a second doping element and a third doping element, and the valence state of the first doping element is 1t; the valence state of the second doping element is lt; the valence state of the third doping element; the first doping element is distributed on the inner layer of the crystal particle, the second doping element is distributed on the middle layer of the crystal particle, and the third doping element is distributed on the shallow surface layer of the crystal particle. The ternary positive electrode material provided by the invention is beneficial to improving the high-temperature cycle performance of the secondary battery.

The present disclosure provides a cathode active material. The cathode active material includes a deagglomerated single crystalline particle including layered lithium nickel manganese oxide, a metal oxide coating in contact with the layered lithium nickel manganese oxide, and a carbon coating in contact with the metal oxide coating. The cathode active material includes a deagglomerated single crystalline particle including lithium iron manganese phosphate, a metal phosphate coating in contact with the lithium iron manganese phosphate, and a carbon coating in contact with the metal phosphate coating.

Provided is a square steel pipe having a low yield ratio and excellent low-temperature toughness and ductility.　The square steel pipe according to the present invention has a prescribed steel component composition. The flat plate section of the pipe has, at the central area thereof in the plate thickness, a steel structure in which: ferrite is the main phase; the area ratio of a second phase, which is composed of one or more selected from perlite, pseudo-pearlite, and upper bainite, is 5-30%; and the average crystalline particle diameter is 10.0-30.0 μm. The steel structure includes at least 500 pieces, per mm2, of pearlite and pseudo-pearlite having an equivalent circle diameter of 2 μm to 20 μm. The yield strength of the flat plate section is 295 MPa or more, the tensile strength of the flat plate section is 400 MPa or more, the yield ratio of the flat plate section is 0.85 or less, the uniform elongation of the flat plate section is 8.0% or more, and the elongation at break of the flat plate section is 27.0 or more. The Charpy absorption energy at -10°C of a corner section is 80 J or more, and the ductile-to-brittle transition temperature of the corner section is -10°C or less.

The present application relates to the technical field of high-salinity wastewater, and particularly relates to a device and a method for separating metal ions in high-salinity wastewater by micro-interface induced crystallization. The present application provides a device for separating metal ions in high-salinity wastewater by micro-interface induced crystallization, which comprises a cylinder, and a fluid mixing zone, a circulating granulation zone and a particle separation zone are sequentially arranged in the cylinder from bottom to top. The device for separating metal ions in high-salinity wastewater by micro-interface induced crystallization provided by the present application helps high-salinity wastewater to enter the upper space of the gas-liquid distributor at different speeds with the help of the differential-speed gas-liquid distributor; meanwhile, more crystalline particles are sent to the circulating granulation zone, the flow direction of the seed crystal in the circulating granulation is regulated, and the crystallization efficiency of the seed crystal is improved. The fluidization zone is designed to be wide at the bottom and narrow at the top, the cross-sectional area of the flow channel of the upper fluidization zone is increased, more sufficient reaction space is provided for the crystalline particles, the drag force of the fluid on the seed crystal particles is weakened, and the residence time of the crystalline particles in the upper fluidization zone is prolonged.

The invention discloses a Micro-LED device based on a charge compensation method and a preparation method of the Micro-LED device, relates to the technical field of nano luminescent materials and display, and solves the problems that the luminous efficiency of the Micro-LED device is reduced, the driving voltage is increased, the service life of the device is shortened and the like due to reduction of the crystal size during Mn < 4 + > doped fluoride nanocrystalline through Mg < 2 + > charge compensation. The Micro-LED device sequentially comprises a driving substrate layer, a blue light Micro-LED array layer, a light extraction layer, a color conversion layer and a packaging layer from bottom to top; the light extraction layer is a titanium dioxide nanoparticle layer; the color conversion layer is a Micro-LED device formed by mixing a solution of dispersed silver silicon core shell-cesium sodium manganese fluoride composite nanomaterial Ag (at) SiO2 / Cs2NaF6: Mn < 4 + > and Mg < 2 + > nanocrystal particles with a methyl methacrylate solution and coating the mixture on a substrate. By introducing the Micro-LED color conversion layer based on the charge compensation method, lattice charge unbalance is neutralized, lattice defects are reduced, and formation of a Micro-LED device with high brightness and high stability is facilitated.

[Problem] To provide: a highly magnetized magnetic material film having a thickness of several tens to several hundreds of microns; a magnetic-material-film-equipped member having the magnetic material film; an actuator; and a sensor. [Solution] A magnetic material film 10 includes a main magnetic material layer 20 having at least one or more crystal particles, and the concentration (T / (R+T)) of a transition metal element (T) with respect to the total (R+T) of a rare earth element (R) and the transition metal element (T) in at least one or more crystal particles 22 changes along the thickness direction of the main magnetic material layer 20.

The invention relates to the technical field of storage, in particular to a urea solution storage device and a urea solution storage method.The urea solution storage device comprises a tank body, the tank body is composed of a cylindrical barrel and a conical bottom, a liquid discharging pipe is arranged at the lowest point of the conical bottom, and the urea solution storage device further comprises a stirring mechanism and a liquid discharging mechanism, an upper discharging mechanism is coaxially arranged in the hollow pipe; and an aeration mechanism. A high-concentration area and a low-concentration area in the tank body can be mixed to form radial diffusion, so that urea molecules are uniformly dispersed, local concentration supersaturation is avoided, and the device can be regularly started and used in the storage tank; in the synchronous stirring process, the liquid is sucked from the bottom of the hollow pipe and diffused to the periphery from the top of the hollow pipe, so that an axial circulating flow field is formed, and no stirring dead zone exists in the tank body; the aeration mechanism is arranged, released bubbles can generate disturbance in the rising process, the surface tension of the solution is destroyed, the shearing force generated when the bubbles are broken can disperse tiny crystal particles, and the crystal particles are prevented from being agglomerated.

The present invention relates to crystalline particles of N-((S)-1-(3-(3-chloro-4-cyanophenyl)-1H-pyrazol-1-yl)-propan-2-yl)-5-(1-hydroxyethyl)-1H-pyrazol-3-carboxamide (I) having a specific surface area (SSA) in the range of from about 8 to about 16 m2 / g, preferably from about 10 to about 15 m2 / g, and to a process for preparing said particles. Compound (I) is potent androgen receptor (AR) modulators, which are useful as medicaments, for example in the treatment of prostate cancer.

The invention discloses a chromium picolinate preparation method, which comprises: placing 2-picolinic acid, a chromium source and a solvent in a container, and carrying out a complexation reaction at a temperature of 30-100 DEG C to prepare a first solution; keeping the temperature at 30-100 DEG C, adding a reducing agent into the first solution, adding an alkaline regulator, regulating the pH value to 5-7, and stirring and dispersing to obtain a second solution; and pulping the second solution to obtain a solid product and a mother solution, and drying the solid product to obtain chromium picolinate crystal particles. The synthesis is simple, and the product purity, yield and yield are high; the reducing agent is added to treat hexavalent chromium generated in the reaction, so that the content of hexavalent chromium in the product is greatly reduced, and the product is safer and more reliable; the mother liquor can be recycled, no wastewater and sewage treatment station needs to be built, the energy consumption is low, and the method has remarkable cost advantage and economic benefit and is suitable for large-scale production.

The present invention relates to a method for deep fluoride removal from sewage based on NH4F·LaF3 chemical precipitation. The specific steps are as follows: Add a solution containing NH4 + , La 3+ to the fluoride-containing water. After adjusting the pH of the sewage to 6-8, carry out the NH4F·LaF3 chemical precipitation reaction; discharge the precipitate and remove the crystal particles in the supernatant to achieve deep fluoride removal from the sewage. The fluoride ion concentration in the water after fluoride removal can be stably lower than 1 mg / L. The present invention utilizes the characteristic that the double salt NH4F·LaF3 has a very low solubility, and adds NH4 + ions (ammonium chloride or ammonia water + hydrochloric acid) and La 3+ ions (lanthanum chloride or lanthanum oxide + hydrochloric acid) to remove fluoride in the water. The lanthanum ions, ammonium ions, and fluoride ions react in an equivalent amount, so the dosage of the reagent does not need to be excessive. The present invention has the characteristics of high efficiency and low cost, with less dosage of the reagent, fast reaction speed, complete reaction, and low fluoride concentration in the effluent.

The invention discloses a multi-matrix three-dimensional distributed rainbow crystal grain ceramic tile and a preparation method thereof, and belongs to the technical field of architectural ceramics. The ceramic tile sequentially comprises a green body layer, a cover glaze layer, a pattern layer, a glue pattern layer, a rainbow crystal grain layer, a protective glaze layer, a transparent dry grain layer and a glue protective layer from bottom to top. The rainbow crystal grain layer is formed by mixing rainbow crystal grains and transparent dry grains according to a certain proportion, and the protective glaze layer is formed by mixing protective glaze and glue. The chemical components, the glazing amount and the grain composition of each layer are optimally designed. The preparation method comprises the steps of ceramic body preparation, multi-layer application, ink-jet printing, firing, subsequent treatment and the like. The technology aims at solving the contradiction of an existing imitation stone technology in simulation degree, performance and cost, and an industrial production scheme which is high in simulation degree, excellent in physical performance and environmentally friendly is provided.

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 provides a crystal processing method which is used for processing equipment to cut a crystal, the processing equipment comprises a cutting tool and a bearing film, the method comprises the following steps: the crystal has a front surface and a back surface which are oppositely arranged, the front surface of the crystal is provided with a first protective layer bonded by wax, and the back surface of the crystal is provided with a second protective layer bonded by wax; forming a cut unit; the cut unit is bonded to the bearing film, and the bearing film is located on the back face of the cut unit; placing the bearing film adhered with the cut unit on processing equipment, and controlling a cutting tool to cut the cut unit to form cut particles; and taking down the bearing film and the protective layer on the cut particles to form crystal particles. The protective layers bonded by wax are arranged on the two surfaces of the crystal, so that the fracture resistance of the crystal in the cutting process can be remarkably enhanced, and edge collapse, fragmentation or internal micro-cracks generated in the cutting process of the crystal are greatly reduced, thereby directly improving the processing yield of crystal particles.

The utility model relates to a superfine selenium powder preparation device which comprises a gasification furnace, a connecting pipeline I is communicated with the gasification furnace, the other end of the connecting pipeline I is communicated with a vapor deposition furnace, a smoke exhaust port is formed in the top of the vapor deposition furnace, a discharge port is formed in the bottom of the vapor deposition furnace, and the superfine selenium powder preparation device further comprises a side blowing guide pipe. And a side blowing guide pipe is arranged beside the connecting pipeline I on the vapor deposition furnace. The device is simple in structure, low in cost and easy and convenient to operate, selenium steam is sufficiently and uniformly quenched by nitrogen, selenium powder products with consistent crystal granularity are obtained, the granularity of the prepared selenium powder can be applied to the high-end fields of photoelectricity, chemical medicine and the like, and uncrystallized selenium steam and impurities can be effectively recycled.

This invention belongs to the technical field of adipic acid dihydrazide production equipment, specifically a crystallization, separation, and drying device for adipic acid dihydrazide. It includes a base, a support fixedly connected to the left side of the top of the base, a drying mechanism fixedly connected to the right side of the top of the base, a stirring tank fixedly connected to the inner side of the support, a stirring mechanism fixedly connected to the top of the stirring tank, and a crystallization cylinder fixedly connected to the lower part of the stirring tank. During crystallization, the stirring motor is activated, causing the rotating shaft to drive the spiral blades to slowly rotate clockwise, scraping away the crystals on the inner wall of the cylinder. This prevents the crystals from agglomerating into large clumps, ensuring more uniform crystal particles. Furthermore, the absence of crystals adhering to the inner wall of the cylinder improves heat exchange efficiency, accelerates the crystallization speed, and ensures that adipic acid dihydrazide can fully crystallize.

The present invention relates to a microcrystalline glass and a preparation method thereof. The preparation method comprises the following steps: casting a mixture into glass and then performing a crystallization treatment to obtain the microcrystalline glass, wherein the mixture mainly consists of 40-60wt% SiO2, 22-32wt% Al2O3, 2-9wt% MgO, 3-10wt% ZnO and 4-10wt% ZrO2, and the crystallization treatment is divided into two stages, the temperature of the first stage is 680-780°C, the time is 1-4h, and the temperature of the second stage is 920-980°C, the time is 1-3.5h; the microcrystalline glass obtained by the above preparation method mainly consists of a glass matrix and crystal particles dispersed therein in a dendritic distribution, and the crystal particles consist of cordierite crystal particles, tetragonal zirconia crystal particles and zinc spinel crystal particles. The preparation method of the present invention is simple, and microcrystalline glass with high strength and high hardness can be obtained without tempering treatment.

According to the seed crystal method evaporation concentration process applied to the high-salinity and high-hardness wastewater, a seed crystal tank is provided with an online suspended matter (SS) analyzer at the same time, the concentration of seed crystals in mixed liquid in the seed crystal tank can be measured in real time, the recovery amount of the seed crystal liquid is adjusted according to data fed back by the online analyzer, and when the concentration of the seed crystals in the seed crystal tank is smaller than the designed concentration of the seed crystals, the recovery amount of the seed crystals is adjusted. The recovery amount of the seed crystal liquid is increased until the suspended matter online analyzer detects that the concentration in the seed crystal tank reaches the designed seed crystal concentration; and when the seed crystal concentration in the seed crystal tank is more than the designed seed crystal concentration, stopping recovering the seed crystal liquid. According to the invention, the concentrated solution generated by the evaporation and concentration device is cured and precipitated, and the concentrated solution with higher concentration and larger crystal particles at the bottom is recovered, so that crystal grain grading is realized, high-quality seed crystals are provided for the system, and scaling of equipment is effectively prevented.

The invention provides a closed expansion water tank and a cleaning method thereof, and relates to the technical field of expansion water tanks, the closed expansion water tank comprises a tank body, the tank body is divided into four cavities through three partition plates with holes in the tank body, an access hole is machined in an upper panel of the tank body, a flange is welded to the access hole, and the access hole is blocked through a cover plate. The cleaning method comprises the steps that sodium bicarbonate is made into 30-120-mesh composite material crystal particles through a special technology, and the hardness of the crystal particles is Morse 2.3-3.0; the crystal particles are driven by air pressure through an access hole formed in the upper portion of the tank body, and dirt is removed from the interior of the expansion water tank through blasting, impact, friction, stripping and cutting generated at the moment of collision in a physical flexible striking mode. A new cleaning technology is adopted, the scrapped expansion water tank is recycled, and recycling of waste products is achieved; no dust is generated in the cleaning process, and food-grade products are free of chemical pollution.

To provide a machine structure wire rod applicable to automobiles, construction components, and the like, and a manufacturing method therefor, and to provide a wire rod having excellent drawability, and a method for manufacturing the same.SOLUTION: The present invention is a wire rod which, in weight%, consists of C: 0.8-1.2%, Si: 0.01-0.6%, Mn: 0.1-0.6%, Cr: 0.8-2.0%, Al: 0.01-0.06%, N: 0.02% or less (excluding 0), with the remainder being Fe and inevitable impurities, wherein a microstructure includes proeutectoid cementite in a pearlite main structure, includes 20 or more AlN having an average particle size of 30 nm or less per unit area (μm2), and includes a microstructure satisfying the following relational expression 1, wherein [Relational Expression 1] is [(average size of block crystal grains(μm))2 / (length of proeutectoid cementite(μm / 1200 μm2))≤0.5].SELECTED DRAWING: Figure 1

The invention relates to the technical field of particle crystallization, and discloses chemical crystallized particle drying equipment which comprises an annular shell, an upper clamping piece and a lower clamping piece are clamped into the upper portion and the lower portion of one section of the shell correspondingly, and an annular screening assembly and a material returning assembly are arranged in the shell; a plurality of driving motors are arranged on the inner ring and the outer ring between the screening assembly and the material returning assembly, elliptical gears are arranged at the output ends of the driving motors, the elliptical gears drive the upper screening assembly, the lower screening assembly and the material returning assembly to rotate reversely and vibrate up and down at the same time, and the drying speed of small-size crystals is higher; small-size crystals and large crystals are distinguished through vibration, the large crystals finish the whole drying path, and in the small crystal screening process, the large crystals are subjected to the air drying effect, can be rapidly dried and can be rapidly conveyed into drying equipment to be separated, so that the drying efficiency of the equipment is improved. Large crystals are loosened in the vibration process, and the caking state is relieved.

A gas ion gun includes an anode electrode to remove electrons from a gas in order to create gas ions. The anode electrode includes a wire made of an electrical conductive material or of a semiconductor material, the wire extending along a longitudinal axis from a proximal end to a flattened distal end. The anode electrode further includes a crystal particle directly deposited on the flattened distal end, the electrical conductivity of the crystal particle being ten times smaller than the electrical conductivity of the wire.

Core-shell support, comprising: a core comprising at least one oxygen storage / release material selected from alumina-doped ceria-zirconia-based solid solutions; and a shell comprising a rare earth zirconium oxide-based composite oxide represented by a composition formula: (R 1-x Ce x )2Zr2O 7+x , where R represents a rare earth element which is at least one element selected from the group consisting of La, Nd, Pr, Pm, Sm, Eu, Gd, Tb, Dy, Ho, Er, Tm, Yb, Lu, Sc and Y, and x represents a number from 0.0 to 0.8, and with which an outer side of the core is coated, wherein the rare earth zirconium oxide-based composite oxide contains crystal particles having a pyrochlore structure, and the composite oxide based on rare earth zirconium oxide has an average crystal diameter of 3 to 9 nm, wherein an amount of the rare earth zirconium oxide-based composite oxide forming the shell is 4 to 24 parts by mass based on 100 parts by mass of the at least one oxygen storage / release material forming the core.

The bismuth nitrate pentahydrate cooling crystallization device comprises an L-shaped framework, a crystallization kettle is fixed to the outer wall of one side of the L-shaped framework, a kettle cover is connected to the top end of the crystallization kettle in a bolted mode, and a feeding structure used for introducing a bismuth nitrate saturated solution is installed on the outer wall of the side, away from the L-shaped framework, of the crystallization kettle; the constant-temperature circulator is mounted on the peripheral surface of the crystallization kettle, a supporting disc is fixed at one end in the crystallization kettle, and a double-layer cage type cooling crystallization assembly for forming bismuth nitrate pentahydrate crystals is mounted at the bottom end of the supporting disc. The introduction time of circulating cooling water in the double-layer cage type cooling crystallization assembly is controlled, the growth process of the crystals is optimized, it is ensured that the bismuth nitrate pentahydrate crystals obtain ideal particle size distribution in the forming process, the purity and stability of products are improved through large and uniform crystal particles, and the production cost is reduced. And the problems of increased surface area, easy deliquescence and the like caused by too small crystals are also reduced.

The application provides a high-salt water and superheated steam vacuum spray flash evaporation device, and belongs to the technical field of high-salt water treatment, which comprises a flash evaporation box body, a salt water spraying assembly, a steam spraying pipe, a mesh barrier assembly, a first driving assembly and a second driving assembly, the salt water spraying assembly extends from the top of the flash evaporation box body to the inside of the flash evaporation box body and is used for spraying high-salt water into the inside of the flash evaporation box body in a conical state, the steam spraying pipe extends from the bottom of the flash evaporation box body to the inside of the flash evaporation box body and is used for spraying high-temperature steam into the inside of the flash evaporation box body in a conical state, and the mesh barrier assembly is arranged in the inside of the flash evaporation box body and is used for shielding salt-containing crystalline particles that float with steam. Compared with the prior art, the embodiment of the application can effectively avoid that high-temperature steam carries a small amount of fine salt-containing crystalline particles out of the flash evaporation box body, avoids the loss of salt-containing crystalline particles, and improves the collection efficiency of salt-containing crystalline particles.

The utility model discloses a composite flame retardant processing, cooling and crystallizing device, which relates to the technical field of chemical machinery and equipment, and comprises a bottom plate, the outer wall of the top of the bottom plate is fixedly connected with a support frame, and the inner wall of the support frame is fixedly connected with a sleeve. And when the stirring frame rotates, the fixed plate is driven to move circumferentially together. At the moment, a fixing plate drives a second stirring rod to move together in the same track, a pinion connected with the second stirring rod rubs with a gear ring, the gear ring drives the second stirring rod to rotate, and when a sleeve rod rotates, the sleeve rod drives the second stirring rod to rotate together; the effect of fully and uniformly stirring the composite flame retardant solution is achieved, so that crystals are kept in a relatively dispersed state in the solution, the collision and aggregation opportunities among the crystals are reduced, the formation of large aggregates or agglomerates is avoided, fine and uniform crystal particles are favorably obtained, and the quality and performance of a product are improved.