53results about How to "Avoid complex process" patented technology

The invention relates to the technical field of logistics trays, and discloses logistics tray positioning equipment which comprises a tray body, a buffering mechanism is arranged at the bottom in the tray body, a positioning mechanism is arranged at the top of the buffering mechanism, a rotating mechanism is arranged at the bottom of the tray body, and the positioning mechanism comprises a positioning assembly and a limiting assembly. The positioning assembly is arranged at the top of the buffering mechanism, and the limiting assembly is arranged on the left side of the tray body. During use, through the positioning assembly, when goods need to be placed through the tray body and transported, the goods can be placed on the placing table, and the goods can be conveniently conveyed; the placing table can move downwards under the weight pressure of the goods, the rack can be driven to move in the moving process of the placing table, the rack drives the gear to rotate, the supporting column, the clamping plate and the limiting plate can be driven to rotate through the rotating rod under the action of the gear, and the supporting column and the clamping plate are located on the left side and the right side of the goods.

The invention relates to an automatic calibration method for an inertial MEMS sensor. The sensor module includes a pattern generator configured to generate a variable frequency self-test signal. The sensor module includes an inertial sensor including a self-test electrode that receives a frequency sweep self-test signal. The inertial sensor generates an analog sensor signal based on the self-test signal. The sensor module includes: an analog-to-digital converter that generates a digital sensor signal based on an analog sensor signal; and a demodulator including a first input to receive the digital sensor signal, a second input to receive the self-test signal, and an output to output a demodulated signal. The sensor module includes a first low pass filter coupled to an output of the demodulator and configured to generate a baseband signal. The sensor module includes a calibration circuit configured to identify different MEMS characteristics, such as resonant frequency, Q factor, or sensitivity, based on the baseband signal.

The invention discloses a liquid nitrogen freezing and carbon dioxide blasting combined anti-reflection device and method. The device comprises a freezing pipe and an anti-reflection assembly. The anti-reflection assembly is mounted on the inner side of the freezing pipe; the anti-reflection assembly comprises a flexible air bag, an excitation device and a sealing positioning ring; the sealing positioning ring sleeves the outer side of the flexible air bag, and the flexible air bag is provided with an extension section; an end socket is mounted outside the sealing positioning ring in a sleeving manner, and the sealing positioning ring fixes the extension section on the end socket; the exterior of the end head is fixedly connected with the freezing pipe; the excitation device is arranged in the flexible air bag; and a firing line is mounted on the excitation device. The mechanical property of the coal body is optimized and improved through liquid nitrogen freezing, so that the mechanical strength of the coal body is enhanced, the brittleness is greatly improved, and then CO2 phase change blasting is performed to crack the coal seam; for a low-permeability soft coal seam, hole collapse caused by soft coal in single blasting is avoided, more cracks can be generated in the coal seam after CO2 blasting, the fracturing and permeability increasing effects are greatly improved, and a good promoting effect is achieved on gas extraction.

The invention discloses a powder supply method, a three-dimensional printing method and a three-dimensional printing system. The powder supply method is used for supplying powder used for three-dimensional printing to a powder laying mechanism so that the powder laying mechanism can lay the powder to a construction platform in the laying direction; the two sides, in the laying direction, of the construction platform are each provided with a powder supply groove and a powder supply piece, the powder supply grooves are used for containing powder, and the powder supply pieces are located in the corresponding powder supply grooves and ascend and descend relative to the powder supply grooves. When powder is supplied every time, the powder supply piece on the powder supply side supplies powder through lifting, and the powder supply piece on the powder receiving side receives powder overflowing from the construction platform through descending; the powder supply side and the powder receiving side are the side where the powder laying mechanism firstly passes through the powder supply groove and the side where the powder laying mechanism later passes through the powder supply groove during laying. The powder supply method is adopted in the powder supply process in the three-dimensional printing method. The three-dimensional printing system is used for realizing the powder supply method. By the adoption of the technical scheme, compared with the prior art, the amount of powder needing to be carried by the construction unit is smaller.

The invention relates to the technical field of photovoltaic modules, and discloses a double-sided glass photovoltaic module and a preparation method thereof.The double-sided glass photovoltaic module comprises an operation table, a fixing mechanism is arranged at the top of the operation table, a grinding mechanism is arranged on the rear side of the operation table, a collecting mechanism is arranged at the bottom of the operation table, and supporting legs are arranged at the bottom of the collecting mechanism; the fixing mechanism comprises a first servo motor, the first servo motor is fixedly connected to the right side of the operation table, the left side of the first servo motor is fixedly connected with a bidirectional threaded rod, the left side of the bidirectional threaded rod is rotatably connected to the inner side of the operation table, and the periphery of the bidirectional threaded rod is in threaded connection with a moving seat. Through the arranged fixing mechanism, when a frame fixed to a cut photovoltaic module needs to be polished, the frame can be fixed under the action of clamping plates, and the distance between the clamping plates can be adjusted under the action of a bidirectional threaded rod, a movable seat and a bearing plate.

The invention discloses a recursive augmented least square-based dynamic linearization error-assisted model-free adaptive control method and system, and a storage medium, relates to the field of control methods, and aims to solve the problem that the dynamic response performance of a controlled system cannot be effectively improved by an existing model-free adaptive control method. And dynamic linearization errors in a model-free adaptive control process cannot be effectively utilized to suppress disturbance. According to the method, an expansion full-format dynamic linearization data model of a controlled system is established by considering a dynamic linearization error in a control process, a controlled object is compensated based on the expansion full-format dynamic linearization data model, and an expansion pseudo gradient of the controlled system is estimated based on a recursive augmented least square method; and obtaining a model-free adaptive controller based on the expanded full-format dynamic linearization data model at the moment k based on the improved criterion function, inputting the compensated control input signal of the controlled object into the controlled object, calculating the dynamic linearization error difference of the system, and carrying out model-free adaptive control.

The invention relates to the technical field of gene engineering, in particular to a method for rapidly and economically carrying out gene function analysis on lepidoptera insects and application. The method comprises the following steps: designing four different sgRNAs by aiming at an exon region of a target gene, and constructing a sgRNAs synthetic primer mixing pool; 4 different sgRNA-DNA templates are synthesized at the same time, 4 different sgRNAs are further synthesized at the same time, and a sgRNAs mixed pool is formed; the sgRNAs-Cas9 protein and Cas9 protein are prepared into an sgRNAs-Cas9 compound, and the sgRNAs-Cas9 compound is microinjected into newly laid eggs; after the injected eggs develop into larvae, genome DNA is extracted, sgRNAs targeted areas are amplified, the mutation rate of target genes is determined through T7E1 enzyme digestion, and phenotype analysis is conducted on the larvae. According to the method, the mutation rate of the target gene is increased through redundant targeting of the four sgRNAs, so that functional analysis of the target gene is quickly realized in the G0 generation, and the research period of the gene function of the lepidoptera insects is greatly shortened. Besides, four different sgRNAs are synthesized at the same time by constructing a primer mixing pool of a plurality of sgRNAs, so that the economic cost for synthesizing the sgRNAs is greatly reduced.

The invention relates to the technical field of power grids, and provides a network construction device transient stability evaluation method and system considering damping and current limiting, and the method comprises the steps: based on the actual angular frequency of a virtual synchronous machine, the rated angular frequency of a power grid, and the active reference value of a network construction type inverter converter, combining the transient stability critical condition of the virtual synchronous machine and an energy function, and evaluating the transient stability of the network construction device; carrying out simultaneous solution to obtain a critical fault clearing angle so as to quantify the transient stability of the network construction device; wherein the transient stability critical condition of the virtual synchronous machine is obtained by introducing an equivalent damping deceleration area and incorporating the equivalent damping deceleration area into an equal area rule, and calculation of the damping deceleration area is simplified by analyzing the concavity and convexity of an angular frequency track. The conservative property of a traditional transient stability criterion is effectively reduced, and a more accurate design basis is provided for control parameter setting of the network-forming converter.

The invention discloses a monitoring method and device, equipment, a storage medium and a product. The method relates to the technical field of monitoring, and comprises the following steps: in response to an index monitoring instruction, reading a monitoring logic rule of a current index; a preset rule engine is called, corresponding monitoring logic rules are executed in sequence, the current index is monitored, and a monitoring result is obtained; and pushing the monitoring result to a financial transaction cloud platform. According to the method, the monitoring logic is extracted from the engineering code, a low-code platform in the monitoring field is pre-constructed, the monitoring function is achieved in a lightweight mode, the monitoring logic is executed through the set rule engine, the monitoring code is simplified, the index assistant platform does not need to be in direct butt joint with the data source, and the complex process of maintaining multiple data sources is avoided. According to the method and the device, a user can complete index monitoring of various business scenes through rapid configuration, and the problem that the workload and the complexity are increased due to the fact that monitoring logic needs to be integrated in engineering codes in the prior art is solved.

The present application is about a method, device, terminal and storage medium for updating the status of resource transfer, and relates to the field of computer technology. The method includes: receiving a service initiation notification sent by a service platform, and the target service corresponds to resource transfer; based on the service initiation notification, adding a resource transfer event message corresponding to the target service to a message queue; receiving a resource transfer result message sent by a resource transfer platform; the resource transfer result message is used to indicate whether the resource transfer to the target service is successful; based on the resource transfer result message, processing the resource transfer event message in the message queue; wherein the message queue is used to provide a query service to the service platform, so that the service platform queries the message queue for the resource transfer event message, and updates the resource transfer status of the target service based on the query result, thereby simplifying the process of updating the resource transfer status, and thus improving the efficiency of updating the status of the resource transfer of the target service.

The application provides a somatic intelligent reinforcement learning method based on visual feature semantic clustering and value guidance, and belongs to the technical field of robot control. The method extracts visual features in the process of robot task execution by using a pre-trained visual model, and performs semantic stage clustering on the task trajectory according to the similarity change of the visual features to generate a structured value signal for representing the task completion progress. A somatic value model is further trained to predict the task progress degree of the current state, and the predicted value is used for reward remodeling in somatic intelligent model reinforcement learning, thereby guiding the somatic intelligent model to perform strategy optimization. The method converts the intermediate progress in the task execution process into continuous and fine-grained value signals, so that the failure trajectory can also provide effective training information according to its actual completion degree, thereby relieving the credit distribution difficulty under the condition of sparse reward, and improving the training efficiency and generalization ability of the somatic intelligent model in complex operation tasks.

The invention relates to a data encryption method of an attribute-based proxy re-encryption and direct revocation mechanism, which belongs to the field of information security, and comprises the following steps: S1, carrying out system initialization by a permission center PKG; s2, each user applies for a private key from the PKG according to the attribute of the user, and the PKG generates a secret key bound with the identity of the user according to the attribute set of the user; s3, the data owner DO encrypts the data; s4, when the DO hopes to share encrypted data with other users, generating a re-encryption key, and sending the re-encryption key to the cloud server; s5, the cloud server processes the original ciphertext by using the re-encryption key, converts the original ciphertext into a new ciphertext, and makes the new ciphertext accord with a specified sharing strategy; s6, after the target user receives the new ciphertext, decrypting the original ciphertext or the new ciphertext by using the private key of the target user; and S7, when the access authority of a certain user needs to be removed, the cloud server generates an updated re-encryption key according to the new access strategy.

The application provides a frequency converter control hub, which comprises a frequency converter connecting end, a control system connecting end, a frequency setting and feedback module connecting end, an operating state indication module connecting end and a mode selection switch, and is connected with a frequency converter, a control system, a frequency setting and feedback module and an operating state indication module through the frequency converter connecting end, the control system connecting end, the frequency setting and feedback module connecting end and the operating state indication module connecting end respectively. The frequency converter control hub of the application realizes one-key switching between manual and automatic modes of the frequency converter, simultaneously provides manual control related functions of the frequency converter, can transmit manual and automatic control signals and frequency converter feedback signals, serves as a signal transmission bridge between other modules, avoids complex wiring between devices, greatly reduces wiring difficulty, and makes construction and maintenance more convenient.

The utility model relates to an exposed injection lead screw assembly and an injection molding machine thereof, the exposed injection lead screw assembly comprises a lead screw and a lead screw nut, the driving end of the lead screw is inserted into a bearing, and a grease injection hole penetrating through the inner side and the outer side is formed in the lead screw nut; the grease injection hole is filled with grease; the bearing is wrapped in a closed oil cavity, and the oil cavity is filled with lubricating oil. By the adoption of the design of the exposed lead screw, only the bearing part is lubricated through the closed oil cavity, the requirement for high-precision sealing is greatly reduced, and a complex cylinder barrel sealing structure in traditional oil immersion lubrication is avoided. Therefore, the processing and assembling difficulty is reduced, and the risk of lubricating oil leakage caused by sealing failure is reduced, so that the manufacturing cost and the maintenance cost are reduced.

A cleaning machine table comprises a cleaning pool, a cleaning device and a control device, the manipulator is suitable for grabbing the wafer and transmitting the wafer; a transmitting end of the laser detection module is located on one side of the cleaning pool, a receiving end of the laser detection module is located on the other side of the cleaning pool, and a light path between the transmitting end and the receiving end corresponds to the position of the wafer grabbed by the manipulator; the first baffle is located on one side of the receiving end away from the transmitting end; and the first anti-reflection layer is arranged between the first baffle and the receiving end, and the first anti-reflection layer is suitable for inhibiting mirror reflection of the laser. The first anti-reflection layer is arranged, so that laser subjected to scattering and diffuse reflection on the surface of the wafer is prevented from entering the surface of the first baffle and being reflected to the receiving end through the mirror surface of the first baffle, reflected light received by the receiving end is reduced, and the situation that the light received by the receiving end is too complex is avoided. Therefore, the receiving end can judge the position of the wafer according to the received laser from the transmitting end, so that machine shutdown caused by wrong feedback of the laser detection module to a machine is avoided.

The invention discloses a casting and extruding integrated electric automobile lower body structure reinforcement layout topological optimization method, and relates to the field of electric automobiles, the method comprises the following steps: carrying out finite element mesh division on an electric automobile lower body structure, and classifying finite element meshes into extrusion part meshes and casting part meshes according to the types of processing technologies adopted by parts; carrying out secondary division on a finite element grid in a single part, and subdividing the finite element grid into a design domain and a non-design domain; aiming at a casting design domain, a mathematical model of casting constraint is established, and optimization of external reinforcement of the thin-wall die casting is realized; applying extrusion process constraint to an extrusion design domain to establish a mathematical model, and realizing optimization of internal reinforcement of the extrusion structure; solving the mathematical model, obtaining the density distribution of each unit, and determining a reinforcement layout form meeting the comprehensive service condition and the dual manufacturing process constraint; and reconstructing a topological optimization result into a CAD (Computer Aided Design) model or a grid model with reinforcing ribs according to the calculated unit density distribution and load transfer path.

The present application provides a vehicle operating device capable of being retracted and improved visibility and interior design. The present application includes a panel having an opening; an operating module capable of moving between a first position and a second position spaced apart from each other along a first direction as a front-rear direction through the opening; a first rotary link and a second rotary link formed in pairs with each other at the rear of the operating module, each capable of rotating about an axis in a second direction crossing the first direction; a drive source providing a driving force for rotating the first rotary link and the second rotary link; and a cam mechanism connecting the first rotary link and the second rotary link with the operating module, guiding angular motion work of rotating the first rotary link and the second rotary link in opposite directions to move the operating module to the first position or the second position along the angular motion work direction.

The invention discloses a method and device for generating an interior design effect picture, and the method comprises the steps: determining a target house type picture of a target space, analyzing the target house type picture, and determining the meaning information of each subspace in the target space; obtaining house type data from the target house type image; establishing a three-dimensional model of the target space according to the house type data by using a 3D modeling tool; the three-dimensional model comprises a sub-model corresponding to each sub-space; according to the meaning information, performing virtual decoration on the sub-model; determining a decoration effect picture of the sub-model after virtual decoration; the space is analyzed through the artificial intelligence technology, virtual decoration is automatically completed, the complex process of manual modeling is avoided, the efficiency of decoration design is improved, and a user can simply and conveniently obtain the decoration effect picture and preview the decoration design effect.

The utility model relates to a double-ring type reinforcing steel bar sleeve grouting fullness detection device, which comprises an upper ring clamping belt, a lower ring clamping belt, two piezoelectric ceramic pieces, a data acquisition instrument and an excitation power supply, a connecting piece is arranged between the upper ring clamping belt and the lower ring clamping belt, the upper ring clamping belt and the lower ring clamping belt are respectively provided with one piezoelectric ceramic piece, and the two piezoelectric ceramic pieces are respectively connected with the data acquisition instrument and the excitation power supply. One of the two piezoelectric ceramic pieces is connected with the excitation power supply, and the other piezoelectric ceramic piece is connected with the data acquisition instrument. According to the double-ring type reinforcing steel bar sleeve grouting fullness detection device provided by the utility model, the piezoelectric ceramic piece is fixed through the clamping belt, so that the detection position of the device can be randomly adjusted, the detection position is more flexible, the complex process of pre-polishing the mounting position is omitted, and the detection result is accurate and reliable.

The utility model relates to a kind of foundation pit inclined pile support construction devices with angle real-time correction function, including angle correction device and inclined pile, the angle correction device includes inclined pile moving track, inclined pile limiting device and jack device, the jack device includes top jack device and two lateral jack devices, the inclined pile limiting device is located inclined pile moving track bottom, the top jack device is located inclined pile moving track top, two lateral jack devices are symmetrically set in inclined pile moving track middle end two sides, the inclined pile limiting device has inclined pile limiting passage in, the angle monitoring device is equipped in the inclined pile, the angle monitoring device and jack device are wirelessly connected with the control system outside. The device realizes the angle accurate control of inclined pile construction process.

The utility model discloses a high-voltage live display locking device for monitoring leakage current, which belongs to the technical field of lightning arrester monitoring and comprises an electric leakage detection module, a signal processing module, a master control module, an alarm module, a locking module and a power supply module. The electric leakage detection module is used for collecting a leakage current signal and transmitting the leakage current signal to the signal processing module; the signal processing module converts the leakage current signal into a voltage signal and transmits the voltage signal to the main control module; the main control module responds to the voltage signal to generate an alarm signal and a blocking signal; the alarm module responds to the alarm signal to execute an alarm action; the locking module responds to the locking signal to execute a locking action; the power supply module provides working voltage for the electric leakage detection module, the signal processing module, the main control module, the alarm module and the locking module. According to the utility model, the problem of low safety caused by the fact that the electrification condition of the lightning arrester corresponding to other electrical equipment is not considered in the prior art is solved.

The application relates to the technical field of alumina modification, and particularly discloses a synthesis method of modified alumina, which aims to solve the problems of insufficient thermal stability of alumina and uneven dispersion of modified elements in the prior art.The method comprises the following steps: adding a metal organic compound into an aluminum sulfate aqueous solution in advance before the aluminum sulfate aqueous solution and a sodium metaaluminate aqueous solution are subjected to a parallel flow reaction; adding an aminopropylsilazane during the parallel flow reaction; after the parallel flow reaction is completed, adding a hydroxylated quaternary ammonium base into the generated pseudo-boehmite slurry to perform dispersion treatment, and then adding a silicon-containing compound to perform a doping reaction; and finally, calcining the pseudo-boehmite powder to obtain modified alumina.The in-situ and uniform modification of the alumina is realized by introducing the modified components with synergistic effects in different stages and in a specific order, the thermal stability of the final product is significantly improved, and the process flow is short and the cost benefit is high.

The embodiment of the utility model provides a fixing device convenient for installing a super capacitor module of a wind generating set, and relates to the technical field of super capacitor module fixation. The fixing device facilitating installation of the super capacitor module of the wind generating set comprises a back plate, the back plate is installed in a battery cabinet, a first bolt hole and a second bolt hole are formed in the back plate, the position of the first bolt hole corresponds to the position of an original bolt hole of the battery cabinet, and the position of the second bolt hole corresponds to the installation position of the capacitor module. According to the utility model, the back plate is arranged, the size of the back plate is designed according to the size of the primary battery cabinet, the fixing bolts for mounting the primary battery pack are used for fixing the back plate, and the second bolt hole bolts for fixing the super capacitor module are designed on the back plate according to the size of the capacitor module and the fixing bolt holes; the capacitor module can be conveniently installed in the variable pitch system battery cabinet, the complex procedure of overall replacement of the battery cabinet is avoided, and the effect is remarkable after field installation.

The application discloses high-purity copper sulfide prepared from acid wastewater and a method thereof, and belongs to the technical field of metallurgy, and particularly relates to a method for recovering high-purity copper sulfide from molybdenum metallurgical wastewater. In the method, first, sodium hydroxide is used to adjust PH, so that heavy metals such as copper and iron are precipitated, and molybdenum exists in the form of molybdate in the solution, and separation of molybdenum is realized. After the separation, the precipitate is subjected to ammonia reverse dissolution, sodium hydrosulfide precipitation, water washing, acid washing and water washing, and finally high-purity copper sulfide with qualified quality is obtained. The application takes "alkaline complexation-selective sulfidation precipitation-purification and refining" as the core, and successfully recovers high-purity copper sulfide (purity greater than or equal to 99.5%) from copper-iron-containing heavy metal wastewater.

This invention discloses a rapid bridge damping ratio identification method based on a stationary inspection vehicle, belonging to the field of bridge structure vibration testing technology. The method includes: parking the inspection vehicle at the mid-span of the bridge under inspection; exciting the bridge vibration using a passing vehicle and then driving away; collecting the acceleration response of the inspection vehicle in the attenuation segment; establishing a dynamic model of the attenuation segment of the vehicle-bridge coupled system; constructing a two-degree-of-freedom joint state model, internalizing the vehicle-bridge interaction force as a linear combination of system state variables; extracting the effective attenuation segment through signal preprocessing and introducing a dual anti-noise mechanism of adaptive signal-to-noise ratio weights and Huber weights; and employing a profiled two-stage parameter identification strategy, first locking the frequency and modal mass, and then finely scanning and identifying the bridge's first-order damping ratio. This invention requires only a single inspection vehicle and an acceleration sensor, eliminating the need to deploy sensors on the bridge structure. It has strong anti-interference capabilities, high identification accuracy, and is suitable for rapid inspection of small-to-medium span bridges.

The invention discloses a lightweight power distribution terminal software framework implementation method and system. The method comprises the following steps: classifying and reconstructing data of a power distribution terminal to form a plurality of data tables of power distribution terminal software; uniformly setting an interface function in a predefined form for each software function module, and constructing a chained function interface of each data table; initializing a software framework, registering an interface function of the public module to the chain type function interface, and registering an interface function of the product application module to the chain type function interface; when a customization demand exists in the engineering application, registering an interface function of an application software module for realizing the customization demand to a chained function interface; during operation, scheduling is performed through a chained scheduling engine according to the chained function interface and the cycle parameter of each data table, a power distribution terminal software framework is formed, and an application software module is loaded as required to realize different product functions. According to the scheme, the volume is small, functional module code branches are not generated, and the method is flexibly suitable for various products and engineering applications.

The invention belongs to the technical field of chemical synthesis, and relates to the technical field of synthesis of allylamine drug intermediates, in particular to a method for synthesizing cis-allylamine compounds through iron photocatalysis. In order to develop a simple, convenient and green photocatalytic technology for preparing the cis-allylamine compound, aryl-terminated alkyne or a derivative thereof and amino acid are used as raw materials, a one-pot reaction is carried out under purple light irradiation through iron catalysis, the corresponding Z-selective olefin compound can be obtained, the method is mild in reaction condition, simple to operate and high in cis-selectivity, and the method is suitable for industrial production. A catalytic system which is low in cost, green and good in biocompatibility is used, and the concept of green chemistry is met. In addition, the photocatalytic technology provided by the invention provides a green and efficient innovative approach for synthesis of cis-allylamine drugs.

The utility model relates to the technical field of air purifiers, and discloses an automatic cleaning air purifier which comprises a purifier body and further comprises moving assemblies, the moving assemblies are fixedly connected to the positions, close to the four corners, of the bottom of the purifier body, each moving assembly comprises a moving main body, and the top of each moving main body is movably connected with a rotating ball; the top of the rotating ball is fixedly connected with a movable connecting piece, the front face of the bottom of the movable body is fixedly connected with a first wheel shaft, the two sides of the first wheel shaft are movably sleeved with first movable wheels, the back face of the bottom of the movable body is fixedly connected with a second wheel shaft, and the middle of the second wheel shaft is movably sleeved with a second movable wheel. The moving main body rotates by 360 degrees along the rotating ball, and the moving assemblies at the four corners of the bottom of the machine body are used for balancing movement and supporting weight, so that the machine body can be directly pushed to move freely, and the air purifier can be conveniently moved to purify air at all positions in a room.

The invention discloses a method for preparing coal water slurry from coal chemical industry wastewater, and belongs to the technical field of wastewater recycling. The method comprises the following steps: adding a first complexing agent into the coal chemical wastewater, and uniformly stirring; adding a second complexing agent into the obtained solution, and uniformly stirring; continuously adding a dispersing agent; and mixing and stirring the obtained solution with pulverized coal. According to the method, different complexing agent systems are added in stages, so that metal ions in the wastewater can be preferentially treated, the metal ions do not need to be separated from the wastewater, the activity of the metal ions is shielded in situ through chemical action, the complex process of a pretreatment process is avoided, and the interference of the metal ions on the slurrying property can be accurately solved. Meanwhile, the method is low in implementation cost, environment-friendly and high in compatibility.