86 results about "Crystalline particle" patented technology

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 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 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.

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.

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 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.

A drug delivery balloon (10) has a drug thereon in the form of crystalline particles (12), the drug having a predetermined size distribution. Optionally marker particles (14, 16) are also provided. A texturized coating (18), a cap layer (20) and / or other methods may be used to increase particle loading capacity of the balloon.

This invention discloses a cleaning solution and a cleaning method and device for perovskite coating cutters. The cleaning method for the coating cutter includes the following steps: controlling the coating cutter to descend until the lip tip is completely submerged below the surface of the cleaning solution in the immersion tank; controlling the liquid supply pump to repeatedly draw in and expel the cleaning solution at high frequency, rapidly dissolving and removing crystalline particles from the cutter and its internal cavity, resulting in a clean and residue-free cutter. This invention uses a cleaning solution with the same properties as the perovskite coating solution used in the production process to repeatedly rinse the coating cutter at high frequency. On one hand, cleaning with the cleaning solution can effectively remove crystalline blockages from the cutter's slit channels and lip, improving coating quality and stability; on the other hand, cleaning with the cleaning solution can achieve online cleaning, eliminating the need for manual disassembly and assembly of the cutter, avoiding cross-contamination, reducing downtime, and improving coating efficiency.

The invention discloses a device and a method for depositing crystal particles in flowing liquid lead-bismuth alloy. The device comprises a particle deposition tank, liquid lead-bismuth alloy and corrosion product powder are loaded in the tank, and an extraction opening, a sampling opening and a stirring opening are formed in a top cover of the particle deposition tank; a first purification opening and a second purification opening are formed in the lower part of the tank body; the vacuum pump is communicated with the extraction opening; a machine body of the stirrer is fixedly mounted on the stirring opening, and a transmission shaft of the stirrer penetrates through the stirring opening and is arranged in the particle deposition tank; one part of the deposition system penetrates through the stirring opening and is arranged inside the particle deposition tank, and the other part of the deposition system is arranged outside the particle deposition tank; and the two ends of the lead-bismuth purification system communicate with the first purification opening and the second purification opening correspondingly. Efficient directional deposition and mixing of corrosion product powder in the liquid lead bismuth alloy are achieved, the electric heating wire and a deposition system are combined, the experiment temperature, the oxygen control environment and the cooling water flow are accurately controlled, and the stability of experiment conditions is ensured.

The utility model discloses a crystal particle screening device for erythritol production, which comprises a mounting bottom plate, a supporting plate mounted at the top end of the mounting bottom plate, a screening box supported at the top end of the supporting plate, a dispersing box mounted at the top end of the screening box, a material guiding box mounted at the top end of the dispersing box, and a material distributing motor mounted at one end of the material guiding box. A rotating rod is installed on one side of the material distributing motor, a material guiding opening is formed in the dispersing box, a material distributing cone is installed in the material guiding opening, a first screening plate is installed in the screening box, a driving motor is installed at one end of the screening box, a motor driving shaft is installed at one end of the driving motor, and a second screening plate is installed at the bottom end of the first screening plate. A material storage bin is formed in the material guide box, and material distribution blades are installed on the outer wall of the rotating rod. According to the erythritol screening device, erythritol entering the screening box is dispersed before screening, and the situation that due to the fact that a large amount of erythritol enters the screening box at the same time, screening is not uniform is avoided.

This invention discloses a bio-based multi-peak crystalline particle reflective thermal insulation and waterproof coating, additives, and preparation method, belonging to the field of building chemical materials and green energy-saving coating technology. The system uses organosilicon-modified acrylic emulsion as a base material, combined with a specific pigment composition, hollow glass microspheres, bio-based hydrophobic multi-peak crystalline particles, additives, and water. The core of this invention lies in introducing polyhydroxyalkanoate powder with multi-peak particle size distribution and high crystallinity, and constructing a weather-resistant protective layer on its surface through a dry synergistic pretreatment with hindered amine light stabilizers, ultraviolet absorbers, and nano-zinc oxide. This coating achieves a balance between environmental protection and long-lasting performance: it not only possesses excellent dense waterproofing and mechanical properties, but also achieves superior high-temperature anti-leveling characteristics by constructing a stable surface micromorphology. The deep synergy between the weather-resistant layer and the thermal insulation system significantly enhances the coating's anti-aging ability, endowing it with durable high solar reflectivity and excellent dust and stain resistance.

The application provides a circulating crystallization granulation solid-liquid separation fluidized bed system and relates to the technical field of water treatment. The fluidized bed system comprises a fluidized bed, a flocculation device for stirring high-suspension raw water and sludge particles to move, forming a sludge-water mixture with crystalline particles and liquid, the sludge-water mixture entering a suspension zone to form a sludge suspension layer and suspension zone produced water, a negative pressure device for generating negative pressure to make sludge particles in a sludge zone enter a flocculation cavity, make the sludge-water mixture enter the suspension zone and make the suspension zone produced water enter the filtration zone, a raw water supply device for conveying high-suspension raw water into the flocculation cavity, an adjusting device for adjusting the amount of sludge particles entering the flocculation cavity, a filtration device for filtering the suspension zone produced water to generate clean water and a fluid control device for sending the suspension zone produced water into the filtration zone and leading out the clean water. The application solves the problem of serious abrasion of subsequent sludge conveying power equipment caused by the addition of micro sand in the crystallization granulation process in the prior art.

The application discloses a safety measurement method, device and equipment of a multiphase flow pipeline and a medium, relates to the technical field of oil exploitation, and comprises the following steps: applying an alternating excitation signal to different electrode systems arranged on a target pipeline to obtain first electric impedance spectrum data and second electric impedance spectrum data of the target pipeline in a multiphase flow state. The first electric impedance spectrum data is converted into a complex dielectric constant, and a relaxation frequency is determined from the complex dielectric constant; according to the relationship between the relaxation frequency and the particle size, the crystal particle size is determined. According to the crystal particle size and the erosion time, the erosion loss is determined. The equivalent circuit model matched with the second electric impedance spectrum data is fitted to determine the corrosion characteristics. Based on the electric impedance spectrum technology, the accurate measurement of the particle size and the erosion corrosion of two scenes is realized, the method has the characteristics of simple operation, non-invasiveness and high measurement precision, and the safety transportation of the two-phase flow pipeline is ensured.

The invention relates to the related technical field of water pump die casting, in particular to fire pump die casting equipment which comprises a lower die, an upper die is mounted at the top of the lower die, a pressing block is mounted at the bottom of the upper die, a die casting cavity is formed in the top of the lower die, an adjusting mechanism is mounted on the outer side of the lower die, and a cavity is formed in the inner wall of the lower die; the driving part and the vibration assembly are arranged and used for transmitting vibration force to the lower die before die casting, so that the vibration force can act on melt in the solidification process, ordered arrangement of molecules is promoted, crystalline particles are refined, internal pores and stress concentration are reduced, on the other hand, the problem of insufficient filling caused by high-pressure and high-speed injection can be avoided, and the production efficiency is improved. The motor is used for adjusting the direction of the impact block, vibration force is transmitted to the bottom of the push rod so that formed materials can be separated from the inner wall of the die-casting cavity, the push rod can be pushed to slide upwards on the inner wall of the through hole to be used for ejecting materials, and convenience of taking out the materials is improved.

The invention discloses an additive for increasing the crystal size of calcium hydrophosphate and application of the additive, and belongs to the technical field of inorganic chemical industry. According to the additive for increasing the crystal granularity of the calcium hydrophosphate, the additive is at least one of cetylpyridinium bromide, cetyltrimethylammonium bromide and dodecyl benzyl dimethyl ammonium bromide. In addition, the invention also provides an application of the additive in increasing the crystal particle size of calcium hydrophosphate. The additive for increasing the crystal granularity of the calcium hydrophosphate, provided by the invention, can increase the granularity of the calcium hydrophosphate by more than 50%.

Provided is a correction amount determination device, method, recording medium, and jig. A correction amount determination device (300) includes: a diffraction data storage section (310) that stores diffraction data obtained by irradiating a standard sample that is an aggregate of crystal particles that are isotropic and free of strain with X-rays, the diffraction data including a combination of a diffraction angle of the irradiated X-rays with respect to a sample rotation angle and a sample surface height; a correspondence relationship determination section (320) that determines a first correspondence relationship based on the diffraction data; and a correction amount determination section (330) that determines a correction amount of the sample surface height with respect to a desired sample rotation angle and diffraction angle by a first function.

The invention discloses a method and a system for producing potassium chloride from sylvite ore. The method comprises the following steps: S1, crushing the sylvite ore into ore particles with the particle size of less than or equal to 5mm and greater than or equal to 1mm; s2, conveying the ore particles into a decomposition and crystallization unit, and performing decomposition and crystallization to obtain crystallization underflow slurry and crystallization overflow; s3, the crystallizer underflow slurry is screened and classified, screen underflow and the crystallization overflow are conveyed to a thickening unit to be subjected to thickening treatment, and thick underflow is obtained; and S4, the dense underflow is conveyed into a reverse flotation unit for reverse flotation. According to the method, explosion nucleation of carnallite is avoided in the mineral decomposition process, fine grain loss is reduced, and the growth yield of potassium chloride is increased; meanwhile, a reverse flotation process is adopted, KCl crystal particles grow for a long time in a flotation device and can continuously grow in a supersaturated solution, and the yield and the taste of products are improved.

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 belongs to the technical field of separation membranes, provides a copper-based MOF (Metal Organic Framework) mixed matrix membrane as well as a preparation method and application thereof, and solves the problems of poor dispersibility of an MOF filler, poor compatibility of the MOF filler and a polymer matrix interface and high preparation cost in the prior art. The preparation method specifically comprises the following steps: mixing copper nitrate trihydrate, diglycolic acid, adenine, N, N-dimethylformamide, methanol and water, and carrying out a hydrothermal reaction to obtain MOF crystal particles; mixing the MOF crystal particles with ethanol, and carrying out suction filtration to preliminarily obtain an MOF membrane; and pre-curing the epoxy resin system, spin-coating the epoxy resin system on the surface of the MOF membrane, and curing to obtain the copper-based MOF mixed matrix membrane. The thickness of the epoxy resin matrix in the film is controlled by controlling the pre-curing time of the spin-coated epoxy resin, so that the MOF can penetrate through the polymer matrix to form a continuous ion transmission channel. The vacuum suction filtration and spin-coating combined method is simple and convenient to operate and has a large-scale application prospect.

The invention belongs to the technical field of semiconductor films, and relates to a visible-near infrared wide spectrum semiconductor transparent electrode and a preparation method thereof. The visible-near-infrared wide-spectrum semiconductor transparent electrode comprises a substrate and an indium tin oxide film formed on the substrate, the indium tin oxide film comprises In, O and Sn, and the film structure is a glass state indium tin oxide embedded In2O3 and SnO2 crystal particle network. The prepared indium tin oxide thin film is of a special structure that glassy state indium tin oxide is inlaid with an In2O3 and SnO2 crystal particle network, the scattering absorption of the thin film to near-infrared incident light is greatly reduced through the glassy state structure, and the average transmittance gt of the thin film in the visible to near-infrared band (380 nm to 2500 nm) is made to be gt; the In2O3 and SnO2 crystal particle network structure endows the material with good conductive characteristics, and the low resistivity of the material is lower than (lt: 10 <-3 > omega.cm).

The application belongs to the technical field of functional crystalline compound synthesis, and discloses a rare earth-polyacid-based compound and a preparation method and application thereof. 12 O 40 ] and the cell parameter is: the preparation method is as follows: H3[PMo 12 O 40 ] solution is used as a lower solution, an organic solvent is used as an intermediate buffer layer solution, a mixed solution of Dy(NO3)3.6H2O and 4-hydroxy azobenzene-2-carboxylic acid is used as an upper solution C, which is sequentially added to a container, a layered state is maintained, and the container is left to stand until crystal particles appear in the middle layer, and the crystal particles are the rare earth-polyacid-based compound. The compound has excellent electrocatalytic properties and can be applied to nitrite detection and redox.

The utility model relates to the technical field of crystal testing equipment, in particular to a crystal optical performance testing device which comprises a base. A clamping mechanism is arranged at the top end of the base and comprises a clamping seat, the clamping seat is fixedly connected to the middle of the top end of the base, a clamping block is rotationally connected to the inner side of the clamping seat, clamping cloth is fixedly connected to the tail end of the clamping block, and a protection mechanism is arranged on the outer side of the clamping mechanism. Through the arrangement of the multiple clamping blocks arranged on the inner side of the clamping base in a surrounding mode, the clamping blocks can be combined to form a structure similar to a camera shutter, crystals of different sizes are clamped and fixed through concentric circles of different diameters, and meanwhile the circular structure can provide clamping force for different sides of the crystals; and the crystal particles are automatically positioned to the center of the clamping seat after being clamped, so that the crystal particles are mutually aligned with the test equipment, and the optical test efficiency of the crystal is improved.

The invention belongs to the technical field of industrial desulfurization, and particularly relates to an industrial flue gas desulfurization post-treatment device which comprises a desulfurization chimney, a containing barrel is arranged at the bottom of the outer surface of the desulfurization chimney, a gas conveying through pipe is arranged in an inner cavity of the desulfurization chimney, and flue gas is introduced into the desulfurization chimney through the gas conveying through pipe; the containing barrel is used for containing falling solid particles, and related desulfurization equipment is installed in the desulfurization chimney. During long-time desulfurization work, crystal particles on the inner wall of the desulfurization chimney need to be cleaned, in order to avoid the problem of abrasion and protect the inner wall layer of the desulfurization chimney, connecting scrapers attached to the inner wall of the desulfurization chimney are arranged on the two sides in advance, and when the connecting scrapers are driven to rotate by twisting the top cover, the connecting scrapers are driven to rotate. The built-in slice can completely scrape crystal particles attached to the inner wall of the desulfurization chimney at the angle of not abrading the inner wall of the desulfurization chimney, and the cleaning work is more efficient and convenient.

A freestanding thin film (1) contains a solid electrolyte membrane (10) constituted by apatitic compound oxides. The solid electrolyte membrane (10): has one or more oriented polycrystalline layers (11) in the membrane-thickness direction Z, in which oriented crystalline particles (C) of apatitic compound oxides are gathered with their grain boundaries (C1) contacting in the film-plane X and Y directions; has a membrane density d of 4.2 g / cm2 or greater; and has a c-axis orientation ratio with respect to the membrane-thickness Z direction Z of 0.9 or greater as a value calculated by the Lotgering method.

A water inlet and a crystal discharging port are formed in the side wall of the lower end of a reactor shell, a water outlet is formed in the side wall of the upper end of the reactor shell, a water distributor is fixedly installed at the bottom of the inner side of the reactor shell, and the water distributor is communicated with the water inlet in the side wall of the lower end of the reactor shell; the reactor guide barrel is fixedly installed in the upper section of the reactor shell, a dosing mixing opening is formed in the lower end of the reactor guide barrel, and the area between the lower end of the reactor guide barrel and the bottom face of the inner side of the reactor shell is a main reaction area of the reactor; the chemical can flow from top to bottom along the reactor flow guide barrel and flow into the main reaction area of the reactor along the chemical feeding and mixing opening of the reactor flow guide barrel to be subjected to crystallization reaction with waste water, rapid growth of crystals is facilitated, it is guaranteed that crystal particles discharged from the crystal discharging opening are all large particles, and the quality of crystal products is guaranteed.

The application provides a PCB micro-etching wastewater recycling treatment device, which is used for solving the problems of insufficient uniformity of upper tank liquid stirring, poor treatment of impurities in lower tank liquid layering, easy blockage of the filtering system and insufficient filtering force causing secondary pollution in the prior art. The PCB micro-etching wastewater recycling treatment device comprises an upper tank magnetic control liquid flow stirring mechanism, a suspended crystalline particle guiding filtering mechanism and a lower tank liquid flow recycling filtering mechanism. The upper tank magnetic control liquid flow stirring mechanism is used for realizing uniform mixing of the micro-etching liquid by magnetic field driving stirring, ensuring that the drug liquid concentration in each area in the tank is consistent, preventing excessive corrosion caused by excessively high local concentration of the micro-etching agent or affecting the treatment effect caused by insufficient concentration; and the suspended crystalline particle guiding filtering mechanism is used for correspondingly adjusting the filtering direction according to the liquid flow direction, accurately capturing the crystalline particles generated in the upper tank micro-etching treatment process and the copper powder suspended on the liquid surface, and ensuring the subsequent film plating quality.

According to the microcrystal reaction coalescence process and system, various raw material solutions in a raw material storage tank are diluted in the conveying process to form a reaction solution, the reaction solution is dispersed into micron liquid drops through a sprayer, and the micron liquid drops are uniformly sprayed on a microcrystal particle layer filled in a coalescence crystallization bed; various reactants are subjected to an in-situ induced crystallization reaction at contact points on the surfaces of crystal particles, so that the crystal particles in a crystal particle layer grow gradually, and intermittent pulse backwashing is performed on the crystal particle layer in the coalescence crystallization bed to realize space exchange of the crystal particles with different sizes; the large-particle-size crystal particles move to the bottom of the coalescence crystallization bed and are discharged to dehydration equipment for dehydration, and large-particle-size crystal products with the water content being 30% or below and the particle size range being 30-50 microns are formed. The method can inhibit the crystal explosion phenomenon, the particle size of the product particles is increased, and the particle uniformity and purity of the products are improved.

The invention belongs to the technical field of image processing, and particularly relates to a cistanche crystallization process real-time monitoring method and system, and the method comprises the steps: carrying out the segmentation model processing and image analysis of an obtained cistanche image, and obtaining the geometric parameters of crystal particles, including the particle area, the contour perimeter, and the length and width of a minimum enclosing rectangle; obtaining a crystal morphology isomerism index; calculating a crystal neighborhood disturbance degree; calculating a crystal signal-to-noise ratio; calculating a crystal comprehensive early warning value; performing time sequence confirmation on the candidate particles with high matching degree; on the basis of global crystal particle distribution in the current process stage, carrying out global confirmation of abnormal states on the candidate particles confirmed through the time sequence; and comparing the globally confirmed candidate particles with a final early warning threshold value and carrying out early warning. The method solves the technical problem of detection desensitization of abnormal crystal forms under the background of massive normal crystal samples in the prior art.