An on-line material quality detection system based on X-ray fluorescence analysis

Abstract

The application discloses a kind of material quality on-line detection systems based on X-ray fluorescence analysis, including with the on-line grinding function of sample taking and preparation component, with the X-ray fluorescence analysis component of sample taking and preparation component coupling and carrying out on-line detection, cleaning and back material component and intelligent control component;The sample taking and preparation component includes sequentially connected sampling module, mixing module, division module, on-line grinding module and discharge module;The low-cost optimization design scheme of the present application is served multiple sets of sample taking and preparation component with a set of on-line analysis component, a set of grinding module serves multiple sets of pretreatment channel, realizes the full-process automation and depth combination from sampling, sample preparation to analysis, significantly improves the representativeness and detection precision of sample, greatly reduces equipment cost and operation difficulty, provides a kind of high reliability, high efficiency, high precision on-line quality detection scheme for cement industry.

Description

Technical Field

[0001] This invention specifically relates to the field of online detection technology for industrial processes, and more particularly to an online material quality detection system based on X-ray fluorescence analysis. Background Technology

[0002] Traditional cement quality control relies heavily on offline laboratory analysis for sample testing. This involves manually collecting samples from the production line at regular intervals, sending them to the laboratory for complex sample preparation processes such as grinding and tableting, and then performing component analysis using X-ray fluorescence spectrometry. This process typically takes several hours, and the analysis results lag significantly behind the actual production progress. They can only be used for quality assessment and rough adjustments, failing to provide real-time guidance for the production process and thus failing to meet the modern cement industry's demands for quality stability and production efficiency.

[0003] Chinese patent authorization number CN109374665B discloses an automatic sampling online X-ray fluorescence analysis device for cement raw materials. This patent eliminates the cumbersome sample preparation process required by laboratory fluorescence instruments, directly analyzing the sampled material. The patent achieves micro-sampling and quantitative sample delivery through a micro-sampling mechanism and a receiving mechanism with two-stage material level sensors and two-stage gates, ensuring the continuity and timeliness of samples used in the online X-ray fluorescence measurement mechanism. While micro-sampling offers high timeliness, it suffers from insufficient sampling stability and difficulty in accurately controlling the sample volume. Furthermore, some raw materials contain difficult-to-grind raw materials, such as high-silica, high-hardness materials like sandstone, which are difficult to grind finely and exist as large particles in the raw material, severely affecting the accuracy of online X-ray fluorescence detection.

[0004] Chinese patent publication number CN118275481A discloses an online measurement system and method for molybdenum ore composition based on EDXRF. This patent employs a cross-belt online detection method, utilizing a shaping device to level the molybdenum ore mounted on a conveyor. It then uses Ti-target X-ray tubes and Rh-target X-ray tubes for excitation to detect light and heavy elements in the molybdenum ore, effectively improving the element detection range. However, the shaping device in this patent lacks a cleaning function, which may lead to cross-contamination of the test samples, and the patent is not applicable to cement industry scenarios.

[0005] To address the shortcomings of existing technologies, this invention aims to provide an online quality detection system for cement production materials based on X-ray fluorescence analysis technology. This system can deeply couple the sampling system with the X-ray fluorescence analyzer, efficiently covering multiple key quality control points such as raw meal leaving the mill and raw meal entering the kiln with a single analysis system. At the same time, it avoids cross-contamination of samples during mixing, fractionation, grinding, and transportation, ensuring that each sample is highly representative. Summary of the Invention

[0006] The purpose of this invention is to overcome the shortcomings of existing technologies and propose an online material quality detection system based on X-ray fluorescence analysis.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: An online material quality detection system based on X-ray fluorescence analysis includes a sampling component with online grinding function, an X-ray fluorescence analysis component coupled to the sampling component and performing online detection, a cleaning and material return component, and an intelligent control component. The sampling assembly includes a sampling module, a mixing module, a reduction module, an online grinding module, and a discharge module connected in sequence. The mixing module includes mixing chamber one and mixing chamber two; The reduction module includes a first fixed-capacity reduction unit I, a first fixed-capacity reduction unit II, a second fixed-capacity reduction unit I, and a second fixed-capacity reduction unit II arranged vertically. The online grinding module includes a grinding unit, a cooling unit, a vibration damping unit, and an electronic control unit; The discharge module includes a first discharge device one, a first discharge device two, and a second discharge device; The X-ray fluorescence analysis component includes a feeding module, a quantitative module, a flattening module, a dual-tube excitation and detection module, a cleaning module, and a data processing module. The feeding module includes two first feeding devices and one second feeding device; The quantitative module is connected to two first feeding devices and one second feeding device; The flattening module includes a flattening device for flattening the quantified sample and a self-cleaning device for cleaning the flattening device. The dual-tube excitation detection module includes a first target X-ray tube and a second target X-ray tube for analyzing materials; The cleaning module is used to clean the workbench after inspection; The cleaning and recycling components include: a recycling module and a dust collection module; The intelligent control components include: a component coordination and control module and a status monitoring and early warning module.

[0008] Furthermore, the sampling module includes at least two samplers for collecting powder samples from different locations or time periods, namely a first sampler and a second sampler; the first sampler and the second sampler respectively collect materials from mixing chamber one and mixing chamber two.

[0009] Furthermore, the first and second constant volume dividers are arranged below the first mixing chamber and connected to the discharge pipe of the first mixing chamber. The first and second constant volume reducing devices are arranged below the second mixing chamber and connected to the discharge pipe of the second mixing chamber. The downstream pipes of the second constant-volume shrinkage unit one and the second constant-volume shrinkage unit two are connected to the online grinding module.

[0010] As a further embodiment of the present invention, the downstream pipe of the first constant volume reduction device is connected to the inlet of the first discharge device. The downstream pipe of the first constant volume reducing device 2 is connected to the inlet of the first discharge device 2. The outlet of the online grinding module is connected to the inlet of the second discharge device.

[0011] As a further embodiment of the present invention, the outlets of the first discharge device and the second discharge device are respectively connected to the inlets of the two first feed devices. The outlet of the second discharge device is connected to the inlet of the second feed device; The outlets of the second feeding device and the two first feeding devices are all connected to the inlet of the metering module.

[0012] Furthermore, the dual-tube excitation and detection module includes a first target X-ray tube for exciting oxides and a second target X-ray tube for exciting chloride ions; The flattening module and the grinding module work together to complete the sample preparation for the dual-light tube excitation and detection module.

[0013] Furthermore, the sampling module supports at least two sampler types: spiral sampler and chute sampler, with a sampling rate of not less than L / h; Both mixing chamber one and mixing chamber two include a chamber body and an agitator. The rotation axis of the agitator is arranged perpendicular to the material flow. The total volume of material in the chamber body shall not exceed half of the chamber body volume. The reduction ratio of the reduction module is required to be greater than 100°. The pipe arrangement of the discharge module is required to have an angle of less than 10° with the vertical direction.

[0014] As a further embodiment of the present invention, the cooling unit is arranged around the grinding unit, and the cooling unit is one of air-cooled, liquid-cooled, or a combination of air and liquid cooling. The rotation speed of the grinding unit is adjustable within - revolutions per minute, and the grinding time is adjustable within - minutes.

[0015] As a further embodiment of the present invention, one set of the X-ray fluorescence analysis component can be connected to multiple sets of sampling components with online grinding function, and one set of online grinding module can be connected to multiple sets of sampling module, mixing module, and reduction module.

[0016] Furthermore, the recycling module is used to collect and return the residue and waste samples generated by the sampling assembly and the X-ray fluorescence analysis assembly; The dust collection module is used to filter and purify the cleaning exhaust gas from each module.

[0017] The component coordination and control module is used to send control commands to the sampling component and the X-ray fluorescence analysis component, and to coordinate the working sequence of the two. The status monitoring and early warning module is used to receive sensor data from various components, analyze the data based on preset rules, and generate graded early warning signals when the data is abnormal.

[0018] The beneficial effects of this invention are as follows: (1) This invention is the first to integrate online grinding as a built-in function of the sampling component, and achieves deep coupling between the sampling component and the XRF analysis component through standardized docking of the discharge module and the feed module, parameter matching of sample status and detection requirements, and coordinated control of processing cycle and detection cycle. This solves the fundamental contradiction that has long plagued the industry: "samples produced by sampling equipment cannot be used by the analyzer, and the sampling equipment cannot provide the samples required by the analyzer." It provides a truly comprehensive solution for online testing in the cement industry.

[0019] (2) The present invention has a unique dual-volume shrinkage device structure arranged vertically. Through the start-stop control and action sequence coordination of the first and second volume shrinkage devices, valveless switching between the sample “grinding path” and “straight path” can be achieved.

[0020] (3) This invention achieves simultaneous coverage and time-sharing detection of key process points such as raw meal exiting the mill and raw meal entering the kiln through the independent configuration of the first and second samplers. One system can complete the quality monitoring task that originally required multiple sets of equipment. On this basis, through a two-level resource sharing design of one analysis component serving multiple sampling components and one grinding module serving multiple pretreatment channels, the system only needs to add low-cost pretreatment channels when expanding detection points, without having to repeatedly configure expensive analyzers and grinders. This architecture significantly reduces equipment investment, installation space and operation and maintenance costs, providing a cost-effective technical path for cement enterprises to upgrade their technology.

[0021] (4) The grinding module uses high-hardness and wear-resistant materials such as tungsten carbide and high-chromium steel, combined with air cooling, liquid cooling or composite cooling design, to ensure stable grinding particle size, long equipment life and controllable sample thermal deformation under high-frequency and continuous operation conditions. The flattening module integrates a self-cleaning function, and the detection module is equipped with an automatic cleaning device to effectively eliminate the interference of sample residue on subsequent detection and ensure the long-term stability of detection accuracy. The optimized design of the discharge module's pipeline inclination angle and the configuration of the shock absorption unit effectively solve the problems of material accumulation and blockage during the conveying of powder materials. The above engineering innovations together ensure that the system can maintain high-frequency, maintenance-free and long-term stable operation under the harsh conditions of high temperature, high dust and continuous operation in cement plants. Attached Figure Description

[0022] Figure 1 This is a schematic diagram of the online cement material detection system based on X-ray fluorescence technology proposed in this invention; Figure 2 This is a schematic diagram of the workflow between the modules proposed in this invention; Figure 3 This is a schematic diagram of the sampling system workflow proposed in this invention; Figure 4 This is a schematic diagram of the online grinding module proposed in this invention.

[0023] 100: Sampling components 101: Sampling module; 101.1: First sampler; 101.2: Second sampler. 102: Mixing Module, 102.1: Mixing Chamber One, 102.2: Mixing Chamber Two 103: Reduction Module; 103.1: First Fixed-Capacity Reduction Module I; 103.2: Second Fixed-Capacity Reduction Module I; 103.3: First Fixed-Capacity Reduction Module II; 103.4: Second Fixed-Capacity Reduction Module II. 104: Online grinding module; 104.1: Grinding unit; 104.2: Cooling unit; 104.3: Vibration damping unit; 104.4: Electronic control unit. 105: Discharge module; 105.1: First discharge device one; 105.2: Second discharge device; 105.3: First discharge device two. 200: Online X-ray fluorescence analysis component 201: Feeding module; 201.1: First feeding device; 201.2: Second feeding device. 202: Quantitative module 203: Flattening module 204: Dual-light tube excitation and detection module 205: Cleaning module 206: Data Processing Module 300: Cleaning and recycling components, 400: Intelligent control component. Detailed Implementation

[0024] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments.

[0025] Examples of the embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this patent, and should not be construed as limiting this patent.

[0026] In the description of this patent, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," "linking," and "setting" should be interpreted broadly. For example, they can refer to a fixed connection or setting, a detachable connection or setting, or an integral connection or setting. Those skilled in the art can understand the specific meaning of the above terms in this patent according to the specific circumstances.

[0027] Reference Figure 1-4 An online material quality detection system based on X-ray fluorescence analysis includes a sampling component 100 with online grinding function, an X-ray fluorescence analysis component 200 coupled to the sampling component 100 and performing online detection, a cleaning and reprocessing component 300, and an intelligent control component 400. The sampling assembly 100 includes a sampling module 101, a mixing module 102, a reduction module 103, an online grinding module 104, and a discharge module 105 connected in sequence. The X-ray fluorescence analysis component 200 includes a feeding module 201, a quantitative module 202, a flattening module 203, a dual-tube excitation and detection module 204, a cleaning module 205, and a data processing module 206 connected in sequence. Sampling module 101 supports at least two sampler types: spiral sampler and chute sampler; The sampling module 101 includes at least two samplers for collecting powder samples from different locations or time periods, namely a first sampler 101.1 and a second sampler 101.2. The first sampler 101.1 is used to sample materials from the raw meal outlet of the cement production process; The second sampler 101.2 is used to sample materials from the raw meal entry point in the cement production process. The sampling module 101 can be expanded and configured with more samplers as needed for sampling other powder materials in the cement production process; The first sampler 101.1 and the second sampler 101.2 operate independently, each taking samples from the corresponding process sites to obtain a larger number of initial samples; All samplers adopt a high-flow-rate sampling design. Taking the spiral sampler as an example, it consists of a sampling tube, spiral cutter, geared motor and mounting flange. The sampling rate is not less than 20 L / h. It can achieve stepless speed regulation within the range of 0-30 r / min through a frequency converter, ensuring that sufficient initial sample volume can still be obtained under high-frequency detection requirements to adapt to the sampling needs of different flowable materials. When the sampler is working, the geared motor drives the spiral reamer to rotate at a constant speed, continuously carrying the raw material sample out of the inclined chute and dropping it vertically into the downstream pipeline through the discharge port. The sampling time is fixed for each forward rotation. After sampling is completed, the geared motor can reverse to clean the sample, discharging the material remaining in the reamer thread gap back into the inclined chute to prevent material from caking and clogging. The mixing module 102 includes mixing chamber one 102.1 and mixing chamber two 102.2; Mixing chamber 1 (102.1) and mixing chamber 2 (102.2) are cylindrical vertical structures, consisting of a chamber body, a stirrer, and a drive motor. The total volume of materials inside the chamber must not exceed half of the chamber volume to provide sufficient mixing space for the materials. The rotating shaft of the agitator is arranged perpendicular to the material flow, which achieves forced mixing and efficient homogenization during the material's gravity fall, effectively overcoming particle size differentiation and component segregation of powder materials during the conveying process. The first sampler 101.1 and the second sampler 101.2 respectively sample materials from mixing chamber 102.1 and mixing chamber 2 102.2; The reduction ratio of the reduction module 103 is required to be greater than 200; The reduction module 103 includes a first fixed-capacity reduction unit 103.1, a second fixed-capacity reduction unit 103.3, a second fixed-capacity reduction unit 103.2, and a second fixed-capacity reduction unit 103.4 arranged vertically. The four volume reduction units have the same structure. They all adopt a cylinder-driven piston structure. The piston retracts to form a fixed volume chamber to hold the sample. The piston moves forward to push out a quantitative sample and triggers the air sweeping mechanism to clean the sampling chamber. This structural design ensures that even at extremely high reduction ratios, a small amount of representative sample can still be accurately and repeatedly obtained. The first constant volume divider 103.1 and the second constant volume divider 103.2 are arranged below the mixing chamber 102.1 and connected to the discharge pipe of the mixing chamber 102.1. The first constant volume reduction device 2 103.3 and the second constant volume reduction device 2 103.4 are arranged below the mixing chamber 2 102.2 and are connected to the discharge pipe of the mixing chamber 2 102.2. Taking the first constant volume reduction device 103.1 as an example, its specific structure includes: reduction chamber, sampling piston, driving cylinder, limit block and air sweeping nozzle; The working cycle of the constant-volume reducer consists of three stages: 1. Sampling stage: The cylinder drives the piston to move backward, and the shrinking chamber is connected to the upstream material pipeline. The sample flows in naturally under the action of gravity and fills the fixed volume chamber. 2. Sample pushing stage: The cylinder reverses direction, the piston moves forward, and pushes all the sample in the cavity to the downstream pipeline; 3. Cleaning stage: After the piston retracts to its original position, the high-pressure pulse air sweeping nozzle is triggered, and the compressed air pressure is 0.4-0.6MPa to blow the inner wall of the cavity and the piston end face to ensure that there is no residual material.

[0028] The overall reduction ratio of the system is determined by the single sampling amount of the sampler, the discharge speed of the mixing bin, and the single sampling amount of the constant volume reduction device. Taking a single sample volume of 5L for the sampler and a single sample volume of 20mL for the volume reduction device as an example, the single-stage reduction ratio can reach 250:1; By adjusting the ratio of sampling frequency to reduction frequency, the total reduction ratio of the system can be greater than 200:1, which meets the need to accurately obtain a small amount of representative samples from a large number of initial samples. A representative sample to be ground is obtained through the mixing module 102 and the reduction module 103. The online grinding module 104 is used to perform online grinding on the mixed and reduced sample, and to obtain the test sample that meets the requirements of the X-ray fluorescence analysis component 200 through the grinding module 104. The online grinding module 104 includes a grinding unit 104.1, a cooling unit 104.2, a vibration damping unit 104.3, and an electronic control unit 104.4; The grinding unit 104.1 is preferably made of tungsten carbide, but can also be made of high-chromium steel or other high-hardness and wear-resistant materials; The grinding unit 104.1 has an adjustable rotation speed range of 0-3000 rpm and an adjustable grinding time range of 0-30 minutes; the grinding mode can be flexibly adapted according to the characteristics of different materials. Cooling unit 104.2 is arranged around grinding unit 104.1 to suppress the temperature rise caused by high-frequency grinding operations and prevent thermal deformation of samples and overheating of equipment. The cooling unit 104.2 is one of the following types: air-cooled, liquid-cooled, or a combination of air and liquid cooling. The cooling unit 104.2 ensures that the grinding module 104 has the capability for online high-frequency grinding; The vibration damping unit 104.3 is a spring vibration damper, which is installed between the grinding machine base and the mounting platform to effectively isolate the transmission of high-frequency vibration to surrounding equipment and pipelines. For vibration-sensitive precision instruments, such as XRF analyzers, a rubber vibration damping pad with a thickness of 20mm can be added to the bottom of the mounting platform to further reduce residual vibration.

[0029] The downstream pipes of the second volume reduction divider 103.2 and the second volume reduction divider 2 103.4 are connected to the online grinding module 104 and can be used for washing and grinding in the online grinding module 104 and for volume reduction of the material to be ground. The discharge module 105 includes a first discharge device 105.1, a second discharge device 105.3, and a second discharge device 105.2; The angle between the pipe of the discharge module 105 and the vertical direction is required to be less than 15°; The downstream pipe of the first constant volume divider 103.1 is connected to the inlet of the first discharge device 105.1; The downstream pipe of the first constant volume reducing device 2 103.3 is connected to the inlet of the first discharge device 2 105.3; The outlet of the online grinding module 104 is connected to the inlet of the second discharge device 105.2; The feeding module 201 includes two first feeding devices 201.1 and one second feeding device 201.2; The outlets of the first discharge device 105.1 and the second discharge device 105.3 are respectively connected to the inlets of the two first feed devices 201.1; The first volume reduction device 103.1 and the second volume reduction device 103.3 are connected to the X-ray fluorescence analysis component 200 through the first discharge device 105.1 and the second discharge device 105.3, and are used for volume reduction of materials for XRF detection.

[0030] The reduction module 103 enables the switching of the channel for the material to be tested to enter the grinding module 104 or the X-ray fluorescence analysis component 200.

[0031] When the sample needs to be ground, the second volume reduction device 103.2 and the second volume reduction device 203.4 are started to perform quantitative sampling. The sample enters the online grinding module 104 through its downstream pipeline. At this time, the first constant volume reduction device 103.1 and the second constant volume reduction device 103.3 do not perform the reduction action, and the material passes directly through their interior.

[0032] When the sample does not require grinding, the second volume reduction device 103.2 and the second volume reduction device 203.4 do not perform quantitative reduction, and the material passes through; at the same time, the first volume reduction device 103.1 and the first volume reduction device 203.3 are activated to perform quantitative reduction, pushing the sample directly into the downstream pipeline, and entering the X-ray fluorescence analysis component 200 through the first discharge device 105.1 and the first discharge device 205.3.

[0033] By controlling the movement of the volume reduction device, the sample can be switched between the "grinding path" and the "straight path".

[0034] The outlet of the second discharge device 105.2 is connected to the inlet of the second feed device 201.2; The outlets of the second feeding device 201.2 and the two first feeding devices 201.1 are all connected to the inlet of the metering module 202; The quantitative module 202 is connected to two first feeding devices 201.1 and one second feeding device 201.2. It is used to accurately measure the sample to be tested, ensure the consistency of the sample amount entering the detection unit each time, eliminate the influence of sample amount fluctuation on detection accuracy, and obtain the quantitative sample to be tested. The quantitative module 202 adopts a fixed-volume metering method. Its structure consists of a metering chamber with a fixed volume of 20mL, a clamp valve, a photoelectric switch, and a cleaning nozzle arranged above and below the metering chamber. During quantitative measurement, the clamp valve above the metering chamber opens and the clamp valve below closes, allowing the sample from the feeding device to enter the metering chamber. After the photoelectric switch detects that the sample volume has reached the predetermined volume, such as 20 mL, the clamp valve above the metering chamber closes and the clamp valve below opens, allowing the sample to fall into the sample cup in the analyzer. Subsequently, the sample is transferred to the flattening module 203, which simultaneously triggers an air sweep to clean the metering chamber. The flattening module 203 includes a flattening device for flattening the quantified sample and a self-cleaning device for cleaning the flattening device; it is used for flattening the quantified sample and cleaning the flattening device.

[0035] The flattening device performs standardized flattening on the quantitatively prepared test sample to obtain a test sample with a flat surface and uniform density. The flattening device is driven by a cylinder, and the pressing head is a precision-ground stainless steel surface. The flattening pressure is continuously adjustable from 0 to 20 kN. The sample cup is automatically positioned to the flattening station under the drive of the conveying mechanism. The pressing head descends to press the loose powder into a test sample with a flat surface and uniform density. The flattening pressure and holding time are preset according to the material characteristics. For example, the raw material sample pressure is 12kN and the holding time is 3 seconds. The self-cleaning device automatically cleans the surface of the flattening device after each flattening operation to prevent sample residue from contaminating subsequent samples.

[0036] The self-cleaning device is integrated into the flattening device: after the flattening operation is completed, the pressure head rises to the cleaning position, and the cleaning brush sweeps along the surface of the pressure head to remove the adhering trace materials; at the same time, the dust suction port around the brush sucks up the sample dust removed by the brush to avoid cross-contamination generated during the flattening process, and the dust-laden exhaust gas swept out enters the cleaning and return component 300. This module, together with the grinding module 104 of the sampling component 100, completes the standardized preparation of the test sample. The grinding module ensures that the sample particle size is consistent, and the flattening module ensures that the sample density and surface state are consistent. The two work together to eliminate the measurement error caused by the difference in the physical state of the sample. The dual-light tube excitation and detection module 204 includes an X-ray generation unit and a signal detection unit; The X-ray generating unit adopts a dual-tube configuration: including a first target X-ray tube and a second target X-ray tube for analyzing materials; The first target X-ray tube uses a rhodium (Rh) target, and the second target X-ray tube uses a chromium (Cr) target. The first target material, an X-ray tube, is used to excite and detect the contents of calcium oxide (CaO), silicon dioxide (SiO2), aluminum oxide (Al2O3), ferric oxide (Fe2O3), magnesium oxide (MgO), potassium oxide (K2O), and sulfur trioxide (SO3) in the quality analysis of cement production materials. The second target X-ray tube is used to excite and detect chloride ions (Cl) in cement production material quality analysis. - content; The signal detection unit uses a high-resolution silicon drift detector (SDD) with an effective area of ​​30 mm² and an energy resolution better than 139 eV. The detector is equipped with a digital pulse processor with a maximum input count rate of 1 Mcps, ensuring good energy resolution and peak-to-background ratio even under high count rate conditions. The detection chamber is equipped with a helium purging system with a helium flow rate of 5L / min, which effectively reduces the absorption of low-energy X-rays by air and improves the detection sensitivity of light elements such as Na, Mg, Al, Si and chlorine. The flattening module 203 and the grinding module 104 work together to complete the sample preparation for the dual-light tube excitation and detection module 204; The cleaning module 205 is used to automatically clean the sample and the detection chamber after the test is completed; The data processing module 206 has built-in dedicated analysis software that integrates a matrix effect correction algorithm combining the basic parameter method (FP) and the empirical coefficient method, as well as a spectral line overlap deconvolution algorithm. It can realize multi-element synchronous quantitative analysis, and the detection results are displayed through HMI and uploaded to the factory DCS / MES system. After the test is completed, the sample cup automatically moves to the discharge position, and the waste sample is crushed and sucked into the waste collection pipe through the vacuum nozzle. The total cleaning time is about 15 seconds, ensuring that the test area is clean and free of residue before the next sample enters. The cleaning and recycling unit 300 is used to collect and return the residual materials and waste samples generated by the sample preparation unit 100 and the X-ray fluorescence analysis unit 200. The materials from each production point are collected by pipelines to the collection device and then returned to the production system by pneumatic conveying. At the same time, the cleaning exhaust gas from each module is filtered and purified to meet the requirements of clean production. All material production points in the system—including the vent of the mixing module 102, the residual material outlet of the reducing module 103, the washing and grinding waste outlet of the online grinding module 104, the waste sample outlet of the X-ray fluorescence analysis component, and the cleaning exhaust gas of the flattening module 203—are collected into the material collection buffer silo via pipelines. The bottom of the material collection buffer silo is equipped with a discharge valve, and the material is returned to the raw material inlet of the production system via a pneumatic conveying device. The intelligent control component 400 includes: a component coordination and control module and a status monitoring and early warning module; The component coordination control module is used to send control commands to the sampling component 100 and the X-ray fluorescence analysis component 200. Based on the preset timing model, it dynamically coordinates the working timing of the two to ensure that the sample processing cycle of the sampling component 100 and the sample analysis cycle of the X-ray fluorescence analysis component 200 are accurately matched, thereby maximizing the overall efficiency of the system. The status monitoring and early warning module is used to receive sensor data from various components, diagnose the system's operating status based on preset thresholds and trend models, generate graded early warning signals when data is abnormal, realize predictive maintenance, and ensure the long-term stable operation of the system.

[0037] One X-ray fluorescence analysis unit 200 can be connected to multiple sample preparation units 100 with online grinding functions, and one online grinding module 104 can be connected to multiple sampling modules 101, mixing modules 102, and reduction modules 103. Each pretreatment channel independently completes the sampling, mixing, and reduction of samples at its station. When grinding is required, the same grinding module 104 is shared, which ensures the independence of samples while realizing the intensive use of key resources.

[0038] System workflow: Step 1: The intelligent control component 400 triggers a sampling command according to a preset cycle, and the first sampler 101.1 or the second sampler 101.2 obtains the initial sample from the corresponding process site; Step 2: The sample is placed into mixing chamber 1 (102.1) and mixing chamber 2 (102.2) for forced mixing and homogenization; Step 3: After mixing, the material is guided to select its path according to process requirements via the action control of the first and second volume reduction devices: Grinding path required: Start the second volume reduction device 1 103.2 and the second volume reduction device 2 103.4, and the sample enters the grinding module 104; the grinding module 104 first executes the washing and grinding program of the same batch, the waste is discharged into the return system, and then the formal grinding is executed; After grinding, the sample enters the X-ray fluorescence analysis unit 200 via the second discharge device 201.2; Straight-through path: Second volume reduction device 1 103.2 and second volume reduction device 2 103.4 are directly connected. First volume reduction device 1 103.1 and first volume reduction device 2 103.3 are started. The sample enters the X-ray fluorescence analysis component 200 through the first discharge device 1 105.1 and the first discharge device 2 105.3. Step 4: The sample passes through the quantitative module 202, the flattening module 203, the dual-light tube excitation and detection module 204, and the cleaning module 205 in the X-ray fluorescence analysis component 200 to generate component data, which is then output by the data processing module 206. Step 5: The residual materials, waste materials, and washing and grinding waste generated in each stage are collected by the cleaning and recycling unit 300 and returned to the production system; Step Six: The above process runs in a loop under the scheduling of the intelligent control component 400, realizing continuous, automatic, and efficient online quality inspection.

[0039] In the description of this patent, it should be understood that the terms “center,” “upper,” “lower,” “front,” “back,” “left,” “right,” “vertical,” “horizontal,” “top,” “bottom,” “inner,” and “outer,” etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this patent and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this patent.

[0040] The above description is only a preferred embodiment of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. An online material quality detection system based on X-ray fluorescence analysis, characterized in that, It includes a sampling component (100) with online grinding function, an X-ray fluorescence analysis component (200) coupled to the sampling component (100) and performing online detection, a cleaning and reprocessing component (300), and an intelligent control component (400). The sampling assembly (100) includes a sampling module (101), a mixing module (102), a reduction module (103), an online grinding module (104), and a discharge module (105) connected in sequence. The mixing module (102) includes mixing chamber one (102.1) and mixing chamber two (102.2); The reduction module (103) includes a first fixed-capacity reduction unit (103.1), a second fixed-capacity reduction unit (103.3), a second fixed-capacity reduction unit (103.2), and a second fixed-capacity reduction unit (103.4) arranged vertically. The online grinding module (104) includes a grinding unit (104.1), a cooling unit (104.2), a shock absorption unit (104.3), and an electronic control unit (104.4). The discharge module (105) includes a first discharge device (105.1), a second discharge device (105.3), and a second discharge device (105.2). The X-ray fluorescence analysis unit (200) includes a feeding module (201), a quantification module (202), a flattening module (203), a dual-tube excitation detection module (204), a cleaning module (205), and a data processing module (206). The feeding module (201) includes two first feeding devices (201.1) and one second feeding device (201.2). The quantitative module (202) is connected to two first feeding devices (201.1) and one second feeding device (201.2); The flattening module (203) includes a flattening device for flattening the sample after quantification and a self-cleaning device for cleaning the flattening device; The dual-tube excitation detection module (204) includes a first target X-ray tube and a second target X-ray tube for analyzing materials; The cleaning module (205) is used to clean the fluorescence analyzer workbench after detection; The cleaning and recycling assembly (300) includes: a recycling module and a dust collection module; The intelligent control component (400) includes: a component coordination control module and a status monitoring and early warning module.

2. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The sampling module (101) includes at least two samplers for collecting powder samples from different locations or time periods, namely a first sampler (101.1) and a second sampler (101.2); the first sampler (101.1) and the second sampler (101.2) respectively collect materials from mixing chamber one (102.1) and mixing chamber two (102.2).

3. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The first constant volume reduction device (103.1) and the second constant volume reduction device (103.2) are arranged below the mixing chamber (102.1) and connected to the discharge pipe of the mixing chamber (102.1); The first constant volume divider (103.3) and the second constant volume divider (103.4) are arranged below the mixing chamber (102.2) and connected to the discharge pipe of the mixing chamber (102.2); The downstream pipes of the second volume reduction unit (103.2) and the second volume reduction unit (103.4) are connected to the online grinding module (104).

4. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The downstream pipe of the first constant volume reduction device (103.1) is connected to the inlet of the first discharge device (105.1); The downstream pipe of the first constant volume reducing device (103.3) is connected to the inlet of the first discharge device (105.3); The outlet of the online grinding module (104) is connected to the inlet of the second discharge device (105.2).

5. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The outlets of the first discharge device (105.1) and the second discharge device (105.3) are respectively connected to the inlets of the two first feed devices (201.1); The outlet of the second discharge device (105.2) is connected to the inlet of the second feed device (201.2); The outlets of the second feeding device (201.2) and the two first feeding devices (201.1) are all connected to the inlet of the metering module (202).

6. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The dual-light-tube excitation and detection module (204) includes a first target X-ray tube for exciting oxides and a second target X-ray tube for exciting chloride ions; The flattening module (203) and the grinding module (104) work together to complete the sample preparation for the dual-light tube excitation detection module (204).

7. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The sampling module (101) supports at least two types of samplers: spiral samplers and chute samplers, with a sampling rate of not less than 20 L / h; Both mixing chamber 1 (102.1) and mixing chamber 2 (102.2) contain a chamber body and an agitator. The rotating shaft of the agitator is arranged perpendicular to the material flow. The total volume of the material in the chamber body shall not exceed half of the chamber body volume. The reduction ratio of the reduction module (103) is required to be greater than 200. The pipe arrangement of the discharge module (105) is required to have an angle of less than 15° with the vertical direction.

8. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The cooling unit (104.2) is arranged around the grinding unit (104.1), and the cooling unit (104.2) is one of the following: air-cooled, liquid-cooled, or a combination of air and liquid cooling. The grinding unit (104.1) has an adjustable speed range of 0-3000 rpm and an adjustable grinding time range of 0-30 minutes.

9. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: One X-ray fluorescence analysis component (200) can be connected to multiple sampling components (100) with online grinding function, and one online grinding module (104) can be connected to multiple sampling modules (101), mixing modules (102), and reduction modules (103).

10. The online material quality detection system based on X-ray fluorescence analysis as described in claim 1, characterized in that: The recycling module is used to collect and return the residue and waste samples generated by the sampling assembly (100) and the X-ray fluorescence analysis assembly (200); The dust collection module is used to filter and purify the cleaning exhaust gas from each module; The component coordination control module is used to send control commands to the sampling component (100) and the X-ray fluorescence analysis component (200) and coordinate their working sequence; The status monitoring and early warning module is used to receive sensor data from various components, analyze the data based on preset rules, and generate graded early warning signals when the data is abnormal.

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