Mixed ore quality regulation system
By using an online detection and control system to monitor the composition of the blended ore in real time, the problem of detection lag in the traditional blending and stacking process has been solved, enabling dynamic control of unqualified materials and improving the quality and production efficiency of the blended ore.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- 武汉钢铁有限公司
- Filing Date
- 2026-03-12
- Publication Date
- 2026-06-16
AI Technical Summary
Traditional mixing and stacking processes rely on offline sampling and analysis, which leads to detection delays and the inability to provide real-time feedback. This results in substandard materials flowing into the sintering process, affecting both quality and efficiency.
An online detection subsystem is used to monitor the composition of the mixed ore in real time. Combined with the control subsystem, online control commands are generated to achieve buffering, transportation and recycling of unqualified materials, thus preventing them from entering the sintering process.
It improves the uniformity and stability of the composition of the blended ore, ensures the quality of materials entering the sintering process, reduces quality fluctuations and energy waste caused by raw material fluctuations, and improves production efficiency.
Smart Images
Figure CN122210040A_ABST
Abstract
Description
Technical Field
[0001] This application belongs to the field of blended ore quality management technology, and in particular relates to a blended ore quality control system. Background Technology
[0002] In steel raw material production, the mixing and stacking process is a key step in achieving uniform mixing of various iron ore powders, which is crucial for subsequent sintering and smelting processes.
[0003] Traditional mixing and stacking processes typically employ a stacker with a herringbone pattern for material distribution and a mixing and reclaiming machine for tangential material collection. However, the detection of material composition often relies on offline sampling and analysis. This approach suffers from problems such as detection lag and the inability to provide real-time feedback and control, leading to the inflow of substandard materials that affect the quality and efficiency of the sintering process. Summary of the Invention
[0004] The embodiments of this application provide a blended ore quality control system, which can at least to a certain extent achieve blended ore quality control, prevent unqualified products from entering the sintering process, thereby improving the uniformity and stability of the blended ore composition and providing high-quality blended ore for the sintering process.
[0005] Other features and advantages of this application will become apparent from the following detailed description, or may be learned in part from practice of this application.
[0006] The first aspect of this application provides a system for controlling the quality of blended ore, comprising: The material conveying subsystem includes a reclaimer and a material conveying device. The reclaimer is configured to extract homogenized mineral material from a homogenized stockpile and convey the homogenized mineral material to the material conveying device. The material conveying device is configured to convey the homogenized mineral material to a sintering device. An online detection subsystem is located on one side of the material conveying equipment and is configured to acquire signals and perform component analysis on the mixed mineral material in the material conveying equipment, and generate component analysis results. The control subsystem is electrically connected to the online detection subsystem. The control subsystem is configured to generate an online control command and send the online control command to the material conveying equipment when the mixed mineral material is determined to be unqualified material based on the component analysis results and preset standards. The material conveying equipment is also configured to buffer and transport the mixed mineral material according to the online control command.
[0007] Optionally, the online detection subsystem includes: An X-ray emission source is configured to irradiate the surface of the mixed mineral material with X-rays. A detector configured to receive X-ray fluorescence signals reflected from the surface of the homogenized mineral material; A spectrometer is configured to perform component analysis on the homogenized mineral material based on the X-ray fluorescence signal and generate the component analysis results.
[0008] Optionally, the online detection subsystem further includes: A laser rangefinder is disposed between the X-ray emission source and the detector, and the laser rangefinder is configured to detect the vertical distance between the surface of the homogenized mineral material and the detector. A lifting mechanism, connected to the detector, is configured to adjust the position of the detector based on whether the vertical distance meets a preset distance range; A rotary homogenizer is disposed at the front end of the X-ray emission source. The surface of the rotary homogenizer has spiral protrusions. The rotary homogenizer is configured to scrape the surface of the mixed mineral material by rotating.
[0009] Optionally, the online detection subsystem further includes: The housing, in which the X-ray emission source, the detector, and the spectrometer are encapsulated; or The material conveying equipment includes a head end and a tail end, and the online detection subsystem is located in the middle section of the material conveying equipment, away from the head end and the tail end.
[0010] Optionally, the online detection subsystem further includes: A material detection device is disposed between the beginning of the material conveying equipment and the X-ray emission source. The material detection device is configured to notify the X-ray emission source to start when the mixed mineral material is detected in the material conveying equipment.
[0011] Optionally, the material conveying device includes: The first conveying device is configured to convey the mixed mineral material to the sintering equipment; The second conveying device is configured to recover and transport the mixed mineral material according to the online control command.
[0012] Optionally, the material conveying device further includes: A material transfer mechanism is installed on one side of the first conveying device and the second conveying device. The material transfer mechanism is configured to transfer unqualified mixed mineral materials from the first material conveying device to the second material conveying device according to the online control command.
[0013] Optionally, the material conveying device further includes: A buffer tank is located on one side of the second conveying device, and the buffer tank is configured to store substandard mixed mineral materials.
[0014] Optionally, the material conveying device further includes: A recycling transport device is installed on one side of the buffer tank; The control subsystem is also configured to send a recycling and transportation instruction to the recycling and transportation device when the unqualified mixed mineral material in the buffer tank reaches a preset capacity. The recycling and transportation device is further configured to: recycle and transport a batch of substandard mixed mineral materials in the buffer tank according to the recycling and transportation instruction.
[0015] Optionally, the online control command includes a speed reduction command, and the material conveying equipment is further configured to reduce its operating speed via the speed reduction command. The operating speed range of the material conveying equipment is 0.5 m / s to 2.5 m / s.
[0016] The one or more technical solutions provided in the embodiments of the present invention achieve at least the following technical effects or advantages: The blended mineral quality control system of this application embodiment includes: a material conveying subsystem, including a reclaimer and a material conveying device, wherein the reclaimer is configured to extract blended mineral material from the blended material pile and convey the blended mineral material to the material conveying device, and the material conveying device is configured to convey the blended mineral material to a sintering device; an online detection subsystem, located on one side of the material conveying device, configured to acquire signals and perform component analysis on the blended mineral material in the material conveying device, and generate component analysis results; and a control subsystem, electrically connected to the online detection subsystem, configured to generate an online control command and send the online control command to the material conveying device when the blended mineral material is determined to be unqualified material based on the component analysis results and preset standards; the material conveying device is further configured to perform buffer transport of the blended mineral material according to the online control command. Therefore, this embodiment of the application monitors the composition of the blended ore through an online detection subsystem and combines it with a control subsystem to achieve quality control of the blended ore, prevent unqualified products from entering the sintering process, thereby improving the uniformity and stability of the blended ore composition and providing high-quality blended ore for the sintering process.
[0017] It should be understood that the above general description and the following detailed description are exemplary and explanatory only, and do not limit this application. Attached Figure Description
[0018] The accompanying drawings, which are incorporated in and form part of this specification, illustrate embodiments consistent with this application and, together with the description, serve to explain the principles of this application. It is obvious that the drawings described below are merely some embodiments of this application, and those skilled in the art can obtain other drawings based on these drawings without any inventive effort. In the drawings: Figure 1 A structural diagram of the blending ore quality control system according to an embodiment of this application is shown.
[0019] 1- Primary material yard; 2- Feeding device; 3- Mixing ore bin; 4- Ore blending device; 5- Stacking belt conveyor; 6- Mixing stacker; 7- Mixing stockpile; 8- Reclaimer; 9- First conveying equipment; 10- Online detection subsystem; 11- Second conveying equipment; 12- Buffer tank; 13- Recycling and transport device. Detailed Implementation
[0020] The technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments of this application, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of this application.
[0021] Furthermore, the described features, structures, or characteristics can be combined in any suitable manner in one or more embodiments. Numerous specific details are provided in the following description to give a thorough understanding of embodiments of this application. However, those skilled in the art will recognize that the technical solutions of this application can be practiced without one or more of the specific details, or other methods, components, apparatuses, steps, etc., can be employed. In other instances, well-known methods, apparatuses, implementations, or operations are not shown or described in detail to avoid obscuring various aspects of this application.
[0022] The block diagrams shown in the accompanying drawings are merely functional entities and do not necessarily correspond to physically independent entities. That is, these functional entities can be implemented in software, in one or more hardware modules or integrated circuits, or in different models and / or processor devices and / or microcontroller devices.
[0023] The flowcharts shown in the accompanying drawings are merely illustrative and do not necessarily include all content and operations / steps, nor do they necessarily need to be performed in the described order. For example, some operations / steps can be broken down, while others can be combined or partially combined; therefore, the actual execution order may change depending on the specific circumstances.
[0024] It should also be noted that the terms "first," "second," etc., in the specification, claims, and accompanying drawings of this application are used to distinguish similar objects and are not necessarily used to describe a specific order or sequence. It should be understood that such uses of these terms can be interchanged where appropriate so that the embodiments of this application described herein can be implemented in orders other than those illustrated or described.
[0025] In steel raw material production, the mixing and stacking process is a crucial step in achieving uniform mixing of various iron ore powders, which is essential for subsequent sintering and smelting processes. Traditional mixing and stacking typically employs a stacker with a reciprocating herringbone pattern and a mixing and reclaiming machine with tangential feeding. However, the detection of material composition often relies on offline sampling and analysis. This method suffers from problems such as detection lag and the inability to provide real-time feedback and control, leading to the inflow of substandard materials that affect the quality and efficiency of the sintering process.
[0026] Currently, although some online detection technologies are applied to material composition analysis, a complete integrated system of online detection and dynamic control has not yet been formed in the blending and stacking process. This system is capable of real-time monitoring of the blended ore composition and automatically adjusting the flow direction of the blended ore based on the detection results, so as to ensure that qualified blended ore enters the sintering process and unqualified blended ore is returned to the blending batching tank or primary material yard for reprocessing.
[0027] In view of this, embodiments of this application provide a blended ore quality control system. This system monitors the composition of the blended ore through an online detection subsystem and, in conjunction with a control subsystem, achieves blended ore quality control, preventing substandard products from entering the sintering process, thereby improving the uniformity and stability of the blended ore composition and providing high-quality blended ore for the sintering process.
[0028] The following description, in conjunction with the accompanying drawings, describes the blending ore quality control system according to an embodiment of this application.
[0029] Figure 1 A structural diagram of the blending ore quality control system according to an embodiment of this application is shown.
[0030] The first aspect of this application provides a system for controlling the quality of blended minerals, comprising: a material conveying subsystem, including a reclaimer 8 and a material conveying device, wherein the reclaimer 8 is configured to extract blended mineral material from a blended material pile 7 and convey the blended mineral material to the material conveying device, and the material conveying device is configured to convey the blended mineral material to a sintering device; an online detection subsystem 10, disposed on one side of the material conveying device, configured to acquire signals and perform component analysis on the blended mineral material in the material conveying device, and generate component analysis results; and a control subsystem electrically connected to the online detection subsystem 10, wherein the control subsystem is configured to generate an online control command and send the online control command to the material conveying device when the blended mineral material is determined to be unqualified material based on the component analysis results and a preset standard; the material conveying device is further configured to perform buffer transport of the blended mineral material according to the online control command.
[0031] like Figure 1 As shown, in a primary material yard 1, material is fed by a feeding device 2, and the material is mixed and blended based on a mixing trough 3 and a blending device 4. The mixed ore is stacked into a mixing pile 7 using a stacking conveyor belt 5 and a mixing stacker 6. The mixed mineral material is extracted from the mixing pile 7 using a reclaimer 8 and the mixed mineral material is conveyed to the material conveying equipment.
[0032] Based on the above disclosure, this application embodiment constructs a blended ore quality control system integrating material conveying, online detection, and online control, achieving real-time monitoring and dynamic adjustment of blended ore quality. Specifically, after the material conveying subsystem's reclaimer 8 extracts material from the blended material pile 7, it is transferred to the sintering equipment via the material conveying equipment. During this process, the online detection subsystem 10 located on one side of the conveying equipment performs real-time signal acquisition and composition analysis on the flowing blended ore. When the control subsystem receives the analysis results and determines that the material is unqualified, it generates an online control command and sends it to the material conveying equipment, causing it to buffer the unqualified material instead of directly sending it into the sintering process. Thus, by setting up online detection and intelligent diversion before the material enters the sintering process, not only is real-time and accurate monitoring of the blended ore quality achieved, but it can also respond quickly when compositional deviations are detected, preventing unqualified material from directly entering the subsequent sintering process. This ensures the quality stability of the raw materials entering the furnace, effectively reduces sintered ore quality fluctuations and energy waste caused by raw material fluctuations, and improves quality control accuracy.
[0033] For example, the reclaimer 8 can be a drum mixer reclaimer 8, which uses the bucket on the drum to peel off the material layer by layer from the end face of the stockpile during rotation, achieving the effect of reclaiming and mixing at the same time. This reclaiming method not only ensures the uniformity and stability of the reclaiming flow rate, but also performs secondary mixing on the flatly piled material during the reclaiming process, improving the uniformity of the mixed mineral components entering the conveying system.
[0034] For example, the material conveying equipment can be a conveyor belt, which carries and transports mixed mineral materials via a continuously running belt. As raw material conveying equipment in steel plants, conveyor belts not only have a simple structure, large carrying capacity, and low energy consumption, but also provide a stable material flow for the online detection subsystem 10 during the conveying process, ensuring continuous and accurate data collection. Upon receiving online control commands from the control subsystem, the conveyor belt can adjust its operating mode or switch paths to temporarily buffer or transfer non-conforming materials to a designated area, thereby flexibly cooperating with the quality control process.
[0035] For example, multiple iron ore raw materials are taken from the primary stockyard 1 and fed into the mixing and batching tank. The materials are quantitatively fed according to the target ratio, and then the stockpile is spread in layers along the length of the stockpile to form a stockpile. Finally, the entire cross section is cut along the vertical direction of the stockpile to achieve material homogenization, and the material is transported to the conveyor belt.
[0036] Understandably, the control subsystem preprocesses and analyzes the received material composition data, and the comparison module compares the detected material composition with the preset planned values. If the material composition is within the allowable fluctuation range of the planned values, it is determined to be a qualified product; if it exceeds the allowable fluctuation range, it is determined to be a non-qualified product.
[0037] For example, when the control subsystem determines that the mixed mineral material is unqualified material based on the component analysis results and preset standards, the preset standards may refer to whether each component in the component analysis results meets the preset component range.
[0038] In some embodiments, the online detection subsystem 10 includes: An X-ray emission source is configured to irradiate the surface of the mixed mineral material with X-rays. A detector configured to receive X-ray fluorescence signals reflected from the surface of the homogenized mineral material; A spectrometer is configured to perform component analysis on the homogenized mineral material based on the X-ray fluorescence signal and generate the component analysis results.
[0039] It should be noted that when the mixed mineral material smoothly passes through the detection area on the conveyor belt, the X-ray emission source irradiates the material surface with high-energy X-rays. The elements in the material are excited and generate secondary X-ray fluorescence signals. The wavelength and intensity of these signals directly correspond to the element type and its content. Subsequently, a high-sensitivity detector is responsible for real-time acquisition of these fluorescence signals reflected from the material surface and converting them into electrical signals, which are then transmitted to a spectrometer. The spectrometer rapidly calculates and compares the received spectral data to determine the content of various key chemical components in the material, such as iron, silicon, aluminum, and calcium, and generates structured component analysis results. The entire detection process requires no contact with the material and no sampling or sample preparation, enabling online real-time analysis of the entire flow of material. This transforms traditional offline analysis and detection into synchronous online monitoring, providing reliable data support for timely intervention by the control subsystem and effectively preventing unqualified materials from flowing into subsequent processes.
[0040] The spectrometer employs X-ray fluorescence spectroscopy (XRF) and near-infrared spectroscopy (NIR) to obtain compositional analysis results. Specifically, XRF is used for precise qualitative and quantitative analysis of inorganic elements in materials, accurately determining the content of key elements such as iron, silicon, calcium, and aluminum by detecting the characteristic fluorescence spectra produced after element excitation. NIR, based on the absorption characteristics of molecular vibrational spectra, is primarily used to analyze information on moisture, mineral crystal structure, and some organic or bound water substances in materials. XRF provides precise mineral powder grade and impurity composition, while NIR supplements information on moisture and phase composition. By fusing and processing the spectral data from both methods, the spectrometer can generate more comprehensive and accurate compositional analysis results. This not only improves its adaptability to complex minerals but also eliminates the blind spots of single detection technologies for specific elements or states, providing high-dimensional data support for subsequent quality control.
[0041] In some embodiments, the online detection subsystem 10 further includes: A laser rangefinder is disposed between the X-ray emission source and the detector, and the laser rangefinder is configured to detect the vertical distance between the surface of the homogenized mineral material and the detector. A lifting mechanism, connected to the detector, is configured to adjust the position of the detector based on whether the vertical distance meets a preset distance range; A rotary homogenizer is disposed at the front end of the X-ray emission source. The surface of the rotary homogenizer has spiral protrusions. The rotary homogenizer is configured to scrape the surface of the mixed mineral material by rotating.
[0042] It should be noted that the rotating homogenizer is located at the front end of the X-ray emission source. Its spiral protrusions continuously contact and scrape the material surface during high-speed rotation, effectively breaking up clumps caused by material adhesion and smoothing the uneven surface into a flat and dense detection plane, thus eliminating detection errors caused by surface morphology differences. A laser rangefinder is installed between the X-ray emission source and the detector, emitting laser light into the material surface in real time and receiving reflected signals to measure the vertical distance between the material surface and the detector. This distance data is immediately transmitted to the control system (e.g., the control subsystem). If the detected distance exceeds the preset optimal detection focal length range, the lifting mechanism will automatically adjust the detector's installation height according to instructions, ensuring that the X-ray emission source is always maintained at the optimal excitation distance while ensuring that the detector can effectively receive fluorescence signals.
[0043] In some embodiments, the online detection subsystem 10 further includes: The housing contains the X-ray emission source, the detector, and the spectrometer; or the material conveying equipment includes a head end and a tail end, and the online detection subsystem 10 is located in the middle section of the material conveying equipment, away from the head end and the tail end.
[0044] Understandably, integrating precision components such as the X-ray emission source, detector, and spectrometer into a sealed housing provides excellent shielding performance. This effectively prevents high-concentration dust from directly adhering to the optical mirrors and electronic components, avoiding problems such as X-ray attenuation, signal interference, and poor heat dissipation caused by dust accumulation, thus ensuring the original accuracy of the spectral data. The subsystem is intentionally placed in the middle section of the material conveying equipment, rather than near the beginning or end. This is because the material drop-off and unloading points of the conveyor belt are often the areas with the most severe dust generation, where large amounts of suspended dust can severely obstruct the light path and increase the probability of window contamination. In contrast, the material flow in the middle section is relatively stable, and after the preceding conveying stage, some fine dust particles have already settled, reducing the concentration of ambient dust.
[0045] In some embodiments, the online detection subsystem 10 further includes: A material detection device is disposed between the beginning of the material conveying equipment and the X-ray emission source. The material detection device is configured to notify the X-ray emission source to start when the mixed mineral material is detected in the material conveying equipment.
[0046] Understandably, the material detection device is installed between the material conveying equipment and the X-ray emission source, acting as a trigger switch for the detection process. In actual production, the material conveying equipment does not always operate at full load; there are periods of idling, shutdown, or material interruption. If the X-ray emission source operates continuously, it will not only waste a significant amount of electrical energy but also accelerate the aging of the X-ray tube, increasing equipment maintenance costs. By configuring a material detection device, the status of the material flow can be sensed in real time: when the device detects that the mixed mineral material is passing normally, it sends a start signal to the X-ray emission source, causing it to enter the working state; conversely, when no material is passing or the material flow is interrupted, the X-ray emission source automatically enters standby or hibernation mode, stopping unnecessary X-ray output. This on-demand start-up mode avoids the ineffective idling of the X-ray emission source when there is no material, reducing overall energy consumption. At the same time, by reducing the ineffective working time of the X-ray tube, its service life is effectively extended, reducing equipment replacement frequency and maintenance costs.
[0047] In some embodiments, the material conveying device includes: The first conveying device 9 is configured to convey the mixed mineral material to the sintering equipment; The second conveying device 11 is configured to recover and transport the mixed mineral material according to the online control command.
[0048] In some embodiments, the material conveying device further includes: A material transfer mechanism is disposed on one side of the first conveying device 9 and the second conveying device 11. The material transfer mechanism is configured to transfer unqualified mixed mineral materials from the first material conveying device to the second material conveying device according to the online control command.
[0049] For example, the material transfer mechanism can be a flapper or a moving funnel device, installed at the head of the conveyor belt. Under normal production conditions, the flapper is in the first position, and the material falls along the normal path into the second conveyor 11 to be sent to the sintering process. Once the online detection subsystem 10 determines that the current material composition is unqualified, the control subsystem sends a switching command to the flapper drive device, and the flapper swings to the second position, changing the material flow direction and guiding it into the bypass second conveyor 11, entering the non-conforming product buffer area. The entire process is completed instantaneously during the high-speed material flow, without the need for machine shutdown, ensuring production continuity. If a moving funnel device is used, the overall translation of the funnel aligns it with different receiving belts, achieving the same diversion function.
[0050] In some embodiments, the material conveying device further includes: A buffer tank 12 is disposed on one side of the second conveying device 11, and the buffer tank 12 is configured to store substandard mixed mineral materials.
[0051] For example, the buffer tank 12 is equipped with a material sensor for real-time monitoring of the amount of material stored.
[0052] In some embodiments, the material conveying device further includes: The recycling transport device 13 is disposed on one side of the buffer tank 12; The control subsystem is also configured to send a recycling and transportation instruction to the recycling and transportation device 13 when the unqualified mixed mineral material in the buffer tank 12 reaches a preset capacity. The recycling and transportation device 13 is further configured to: recycle and transport a batch of substandard mixed mineral materials in the buffer tank 12 according to the recycling and transportation instruction.
[0053] For example, when the material in the buffer tank 12 reaches 80% capacity, a recycling and transportation instruction is sent to the recycling and transportation device 13.
[0054] Understandably, after the material transfer mechanism diverts the non-conforming materials to the second conveying device 11, these materials are transported and stored in the buffer tank 12. This buffer tank 12 serves as a temporary buffer area, effectively accommodating small amounts of non-conforming products intermittently generated during production, thus avoiding interference to the main production line caused by frequent start-ups and shutdowns of the recycling process. Based on this, the control subsystem monitors the material capacity within the buffer tank 12. Once the accumulated amount reaches a preset threshold, it sends a recycling transport instruction to the recycling transport device 13. At this time, the recycling transport device 13 starts operating, uniformly transferring the batch of non-conforming materials accumulated in the buffer tank 12 to a designated return ore processing point or batching reuse area. For example, it can be returned to the mixing and batching tank or the primary material yard 1 for reuse in mixing, batching, and stockpiling.
[0055] In some embodiments, the online control command includes a speed reduction command, and the material conveying equipment is further configured to reduce its operating speed via the speed reduction command. The operating speed range of the material conveying equipment is 0.5 m / s to 2.5 m / s.
[0056] Understandably, when the control subsystem determines, based on real-time analysis results, that the current material exhibits quality fluctuations or complex composition, it sends a speed-reduction command to the material conveying equipment, lowering its operating speed from the normal value to the range of 0.5 m / s to 2.5 m / s. Under reduced speed, the passage time of the material between the X-ray emission source and the detector is correspondingly extended, effectively increasing the sampling integration time per unit length of material. This allows the detector to receive more effective fluorescence photons, and the spectrometer to acquire spectral data with a higher signal-to-noise ratio, improving the resolution capability for trace components or boundary grade materials. The lower belt speed also effectively reduces material bouncing and tumbling during conveying, maintaining a relatively stable detection cross-section on the material surface and avoiding signal fluctuations caused by changes in material flow patterns. Once the composition analysis results stabilize or the non-conforming material section has completely passed, the system can automatically restore the conveying speed to normal levels, achieving a dynamic balance between detection accuracy and conveying efficiency.
[0057] In some embodiments, the blending ore quality control system further includes: The storage and feedback subsystem, such as a distributed database system, is used to store detection data and control records, and feed relevant information back to the production monitoring center, so that production personnel can understand the material composition and control effect in real time and adjust production parameters in a timely manner.
[0058] The storage and feedback subsystem can store a large amount of material composition detection data and control records, supporting data backup and recovery functions to ensure data security and integrity. For example, the detection data and control records are transmitted to the production monitoring center in real time via industrial Ethernet. The production monitoring center is equipped with a visual interface that can display material composition data, conveyor belt operating status, and material line switching status in real time. Production personnel can remotely operate the control system and adjust parameters through the monitoring center, realizing intelligent management of the production process.
[0059] Based on the above disclosure, this application embodiment employs an online detection subsystem 10, which can detect material composition in real time and quickly provide feedback on the detection results. This allows for timely detection of problems during material transport, avoiding production interruptions and quality fluctuations caused by detection delays, improving detection efficiency, and providing timely and accurate data support for subsequent dynamic control. The control system I enables dynamic control of material flow, dynamically adjusting the operating speed of the conveyor belt and the switching of material lines based on real-time detection data. This ensures that unqualified materials can be returned for processing in a timely manner, ensuring that materials entering the sintering process meet quality requirements, thereby improving the overall quality of the blended ore. Unqualified materials are transferred via a flip-plate or moving funnel device, and the buffer tank 12 temporarily stores the materials. When the material reaches a certain quantity, it is returned for processing, ensuring that unqualified materials can be returned for processing in a timely and efficient manner.
[0060] To provide a more comprehensive understanding of the working principle of the blending ore quality control system in this application embodiment, an exemplary description is provided below through application examples.
[0061] For example, in the sintering raw material mixing and stacking process of a steel plant, the mixing and reclaiming machine 8 takes material from the mixing pile 7 and conveys it to the conveyor belt. The conveyor belt is equipped with an online X-ray fluorescence spectroscopy detection subsystem 10, which can detect the content of major components (such as iron, silicon, aluminum, calcium, magnesium, etc.) and moisture in the material in real time. The detected data is transmitted to the control subsystem, which preprocesses and analyzes the data, comparing the detected material composition with preset planned values. If the material composition is within the allowable fluctuation range of the planned value (e.g., iron content ±0.5%, set according to production needs), it is judged as qualified, and the conveyor belt operates normally, conveying the material to the sintering process; if it exceeds the allowable fluctuation range, it is judged as unqualified, the conveyor belt slows down or stops, and the material line starts, returning the unqualified material to the mixing and batching tank for re-mixing. As a result, the uniformity of the sintering raw material composition in the steel plant is improved, the production efficiency of the sintering process is increased by 3%, and the production cost is reduced by 2%.
[0062] For example, in the blending and stockpiling process of a coal processing enterprise, the blending reclaimer 8 takes material from the blending stockpile 7 and conveys it to a conveyor belt. The conveyor belt is equipped with a near-infrared spectroscopy online detection subsystem 10, which can detect the content of the main components of the coal (such as ash and sulfur) in real time. The detected data is transmitted to the control subsystem, which preprocesses and analyzes the data, comparing the detected coal components with preset planned values. If the coal components are within the allowable fluctuation range of the planned values (e.g., ash ±1%), it is determined to be a qualified product, and the conveyor belt operates normally, conveying the coal to subsequent processing steps. If it exceeds the allowable fluctuation range, it is determined to be a non-qualified product, the conveyor belt slows down or stops, and the material line starts, returning the non-qualified coal to the stockyard for re-blending. As a result, the quality stability of the enterprise's coal processing products is improved, and the efficiency of subsequent processing steps is increased by 6%.
[0063] The above description is merely an embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the scope of the claims of this application.
Claims
1. A system for controlling the quality of blended ore, characterized in that, include: The material conveying subsystem includes a reclaimer and a material conveying device. The reclaimer is configured to extract homogenized mineral material from a homogenized stockpile and convey the homogenized mineral material to the material conveying device. The material conveying device is configured to convey the homogenized mineral material to a sintering device. An online detection subsystem is located on one side of the material conveying equipment and is configured to acquire signals and perform component analysis on the mixed mineral material in the material conveying equipment, and generate component analysis results. The control subsystem is electrically connected to the online detection subsystem. The control subsystem is configured to generate an online control command and send the online control command to the material conveying equipment when the mixed mineral material is determined to be unqualified material based on the component analysis results and preset standards. The material conveying equipment is also configured to buffer and transport the mixed mineral material according to the online control command.
2. The system according to claim 1, characterized in that, The online detection subsystem includes: An X-ray emission source is configured to irradiate the surface of the mixed mineral material with X-rays. A detector configured to receive X-ray fluorescence signals reflected from the surface of the homogenized mineral material; A spectrometer is configured to perform component analysis on the homogenized mineral material based on the X-ray fluorescence signal and generate the component analysis results.
3. The system according to claim 2, characterized in that, The online detection subsystem also includes: A laser rangefinder is disposed between the X-ray emission source and the detector, and the laser rangefinder is configured to detect the vertical distance between the surface of the homogenized mineral material and the detector. A lifting mechanism, connected to the detector, is configured to adjust the position of the detector based on whether the vertical distance meets a preset distance range; A rotary homogenizer is disposed at the front end of the X-ray emission source. The surface of the rotary homogenizer has spiral protrusions. The rotary homogenizer is configured to scrape the surface of the mixed mineral material by rotating.
4. The system according to claim 2, characterized in that, The online detection subsystem also includes: The housing, in which the X-ray emission source, the detector, and the spectrometer are encapsulated; or The material conveying equipment includes a head end and a tail end, and the online detection subsystem is located in the middle section of the material conveying equipment, away from the head end and the tail end.
5. The system according to any one of claims 1-4, characterized in that, The online detection subsystem also includes: A material detection device is disposed between the beginning of the material conveying equipment and the X-ray emission source. The material detection device is configured to notify the X-ray emission source to start when the mixed mineral material is detected in the material conveying equipment.
6. The system according to claim 1, characterized in that, The material conveying equipment includes: The first conveying device is configured to convey the mixed mineral material to the sintering equipment; The second conveying device is configured to recover and transport the mixed mineral material according to the online control command.
7. The system according to claim 6, characterized in that, The material conveying equipment also includes: A material transfer mechanism is installed on one side of the first conveying device and the second conveying device. The material transfer mechanism is configured to transfer unqualified mixed mineral materials from the first material conveying device to the second material conveying device according to the online control command.
8. The system according to claim 6, characterized in that, The material conveying equipment also includes: A buffer tank is located on one side of the second conveying device, and the buffer tank is configured to store substandard mixed mineral materials.
9. The system according to claim 8, characterized in that, The material conveying equipment also includes: A recycling transport device is installed on one side of the buffer tank; The control subsystem is also configured to send a recycling and transportation instruction to the recycling and transportation device when the unqualified mixed mineral material in the buffer tank reaches a preset capacity. The recycling and transportation device is further configured to: recycle and transport a batch of substandard mixed mineral materials in the buffer tank according to the recycling and transportation instruction.
10. The system according to claim 1, characterized in that, The online control commands include a speed reduction command, and the material conveying equipment is further configured to reduce its operating speed via the speed reduction command. The operating speed range of the material conveying equipment is: 0.5 m / s - 2.5 m / s.