Two-stage screening process of port iron ore sorting warehouse and intelligent control system

Abstract

The invention provides a two-section screening process of a port iron ore separation warehouse and an intelligent control system. The intelligent control system comprises a feeding system, a first-section coarse screening system, a first-section undersize conveying system, a second-section fine screening system, a finished product grading and storing system and the intelligent control system which are sequentially connected. Wherein the first-section coarse screening system is used for carrying out primary separation of large-particle-size impurities and super-specification ores on iron ores entering a port; the second-section fine screening system is used for carrying out size fraction fine separation on the qualified ore subjected to the first-section screening; the intelligent control system is used for carrying out real-time monitoring, analysis and self-adaptive regulation and control on equipment running states, material particle size distribution, processing capacity and energy consumption parameters in the two-stage screening process, and therefore efficient, stable and low-energy-consumption sorting operation of iron ore is achieved.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of intelligent control, in particular to a two-stage screening process and intelligent control system for a port iron ore sorting warehouse. BACKGROUND

[0002] With the continuous expansion of global iron ore trade, as a key node in the iron ore logistics system, the port undertakes important functions such as unloading, temporary storage, sorting, and transfer of iron ore. In order to meet the requirements of different steel enterprises for iron ore particle size specifications and loading quality, the port sorting warehouse usually needs to screen and grade the incoming iron ore.

[0003] In existing port iron ore sorting operations, single-stage screening or screening processes dominated by human experience are often used. The screening equipment parameters usually run with fixed values, making it difficult to dynamically adjust according to the differences in iron ore sources, fluctuations in particle size distribution, and changes in moisture content. Due to the large differences in particle size composition, hardness, and clay content of different iron ore sources, single screening method is prone to problems such as low screening efficiency and unstable product particle size.

[0004] At the same time, under large-scale continuous operation conditions, traditional screening systems generally have serious impact of large blocks of ore, easy clogging of screens, and large fluctuations in equipment load, which not only affects the screening accuracy, but also accelerates the wear of screening and conveying equipment, increases maintenance costs and downtime risks. Especially in the context of high-intensity operations at the port, once the screening system is clogged or overloaded, manual intervention is often required, affecting overall operational efficiency.

[0005] In addition, the screening control of existing port sorting warehouses is mainly based on manual inspection or simple electrical control, lacking real-time sensing and comprehensive analysis capabilities for key parameters in the screening process, making it difficult to identify abnormal conditions in a timely manner and unable to systematically evaluate screening efficiency, energy consumption, and equipment status. To some extent, this control method restricts the development of port iron ore sorting operations towards automation and intelligence.

[0006] Therefore, a two-stage screening process and intelligent control system suitable for port iron ore sorting warehouses is needed. By reasonably setting the cooperative process structure of coarse screening and fine screening, and introducing intelligent monitoring and adaptive control means, precise regulation and control of the screening process can be achieved, thereby improving screening efficiency and sorting quality, reducing equipment failure rate and the need for manual intervention, and meeting the technical requirements of modern ports for efficient, stable, and intelligent operation. SUMMARY

[0007] The technical problem to be solved by the present application is to provide a two-stage screening process and intelligent control system for a port iron ore sorting warehouse, which has the following significant beneficial effects: (1) Realize the grading cooperation of screening process and improve the overall screening efficiency By setting the two-stage screening process structure of the first-stage coarse screening unit and the second-stage fine screening unit, large-diameter lump ore and abnormal materials are effectively removed at the front end, significantly reducing the processing load of the subsequent fine screening unit, thereby improving the overall screening efficiency and system stability.

[0008] (2) Improve the stability and consistency of iron ore product particle size Using a multi-layer screen surface or a multi-stage particle size combination fine screening structure, combined with intelligent control system for dynamic adjustment of screening parameters, effectively reduces the product particle size fluctuation, meets the requirements of port storage, loading and downstream use of particle size stability.

[0009] (3) Reduce the risk of equipment overload and screen blockage, and prolong the service life of equipment Through real-time monitoring of the vibration state of the screening equipment, motor load and material flow, intelligent identification of overload or screen blockage risk, and timely adjustment of the amount of feeding and screening parameters, reduce screen clogging and abnormal wear of equipment, prolong the service life of key equipment.

[0010] (4) Reduce manual intervention and improve the automation level of port operation Introduce intelligent analysis and decision control module to realize automatic identification of screening conditions and adaptive adjustment of parameters, reduce dependence on manual experience and manual inspection, reduce human error, and improve the automation operation capability of the port sorting warehouse.

[0011] (5) Adapt to complex operation requirements of multiple ore sources and multiple conditions In view of the differences in particle size composition, moisture content and physical properties of different sources of iron ore, the intelligent control system dynamically adjusts the screening strategy, so that the system can maintain stable operation under the conditions of mixed ore sources and fluctuating conditions.

[0012] (6) Improve the safety and reliability of system operation Through continuous monitoring and abnormal early warning of key operating parameters, potential faults and hidden dangers of the screening system can be found in advance, reducing the risk of sudden shutdown and ensuring the safety and reliability of continuous high-intensity operation of the port.

[0013] (7) Reduce energy consumption and comprehensive operation and maintenance cost Through adaptive optimization of screening parameters, avoid long-term high-load or low-efficiency operation of equipment, reduce energy consumption per unit processing capacity under the premise of ensuring screening effect, and reduce maintenance frequency and maintenance cost.

[0014] (8) Facilitate centralized monitoring and operation management The system supports centralized collection and storage of screening data, and can analyze and evaluate historical operating data to provide data support for production scheduling, process optimization and management decisions in port sorting warehouses.

[0015] (9) Improve the continuity and stability of port iron ore sorting operations. The two-stage screening process and the intelligent control system work together to make the screening process more stable and continuous, reduce downtime and reduced processing efficiency caused by material fluctuations, and improve the overall continuity of operation.

[0016] This invention provides a two-stage screening process and intelligent control system for a port iron ore sorting warehouse, comprising a feeding system, a first-stage coarse screening system, a first-stage under-screen conveying system, a second-stage fine screening system, a finished product grading and storage system, and an intelligent control system connected in sequence; wherein: The first coarse screening system is used for the primary separation of large-diameter impurities and oversized ore from iron ore entering the port. The second-stage fine screening system is used to perform fine particle size separation of qualified ore after the first-stage screening. The intelligent control system is used to monitor, analyze and adaptively regulate the equipment operating status, material particle size distribution, processing capacity and energy consumption parameters in the two-stage screening process in real time, so as to realize efficient, stable and low-energy-consumption sorting of iron ore.

[0017] In one possible implementation, the first coarse screening system includes a heavy-duty bar screen or a heavy-duty vibrating screen with a screen aperture size ranging from 40 to 80 mm, used to remove large pieces of waste rock, agglomerated ore and non-ferrous impurities, so as to reduce the load on the subsequent fine screening system.

[0018] In one possible implementation, the second-stage fine screening system includes a multi-layer high-frequency vibrating screen or probability screen with a screen aperture size of 5 to 40 mm in a multi-stage combination structure, used to sort iron ore into at least two different particle sizes of finished ore.

[0019] In one possible implementation, the feeding system includes a feeding bin, a variable frequency belt feeder, and an anti-blocking structure. The variable frequency belt feeder is communicatively connected to the intelligent control system and is used to automatically adjust the feeding speed according to the real-time screening load.

[0020] In one possible implementation, the finished product grading and storage system includes multiple independent ore bins, an automatic switching and distributing device, and a material level detection unit, for conveying and storing iron ore separately according to the screening particle size.

[0021] In one possible implementation, the intelligent control system includes a data acquisition module, an intelligent analysis module, a control execution module, and a human-computer interaction module; wherein: The data acquisition module is used to collect data on vibration parameters, motor current, material flow rate, and particle size distribution of the screening equipment. The intelligent analysis module is used to assess screening efficiency and screen clogging risk based on algorithm models; The control execution module is used to output control commands to adjust the operating parameters of the screening equipment.

[0022] In one possible implementation, the intelligent analysis module employs a screening status recognition algorithm based on a rule model or machine learning model to determine the operating conditions such as screen blockage, overload operation, or decreased screening efficiency.

[0023] In one possible implementation, the control execution module is used to dynamically adjust at least one of the following parameters: screening amplitude, vibration frequency, screen surface inclination angle, and feed rate, so as to achieve adaptive optimization of the screening conditions.

[0024] In one possible implementation, the system further includes a remote monitoring and data storage module for centralized monitoring of port sorting warehouses, storage of historical data, and automatic generation of operation reports.

[0025] In one possible implementation, the system is suitable for continuous and automated screening operations of iron ore, lump ore, fine ore and mixed ore in ports, and has the effects of improving screening efficiency, reducing manual intervention and reducing equipment failure rate. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the screening process flow of the present invention.

[0027] Figure 2 This is a schematic diagram of the process structure of the intelligent control system of the present invention. Detailed Implementation

[0028] First, those skilled in the art should understand that these embodiments are merely used to explain the technical principles of the embodiments of this application and are not intended to limit the scope of protection of the embodiments of this application. Those skilled in the art can make adjustments as needed to adapt to specific application scenarios.

[0029] In the description of the embodiments of this application, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in the embodiments of this application based on the specific circumstances.

[0030] In the embodiments of this application, unless otherwise expressly specified and limited, "above" or "below" the second feature can mean that the first feature is in direct contact with the second feature, or that the first feature is in indirect contact with the second feature through an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. "Below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0031] The present application will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0032] See Figure 1 As shown in the embodiment of this application, a two-stage screening process and intelligent control system for a port iron ore sorting warehouse are disclosed, including a feeding system, a first-stage coarse screening system, a first-stage under-screen conveying system, a second-stage fine screening system, a finished product grading and storage system, and an intelligent control system connected in sequence; wherein: The first coarse screening system is used for the primary separation of large-diameter impurities and oversized ore from the iron ore entering the port. The second-stage fine screening system is used to further refine the particle size of the qualified ore after the first-stage screening. The intelligent control system is used to monitor, analyze and adaptively regulate the equipment operating status, material particle size distribution, processing capacity and energy consumption parameters in the two-stage screening process in real time, so as to realize efficient, stable and low-energy-consumption sorting of iron ore.

[0033] In one embodiment of the present invention, the first coarse screening system includes a heavy-duty bar screen or a heavy-duty vibrating screen with a screen aperture size ranging from 40 to 80 mm, which is used to remove large pieces of waste rock, agglomerated ore and non-ferrous impurities, so as to reduce the load on the subsequent fine screening system.

[0034] The second-stage fine screening system includes a multi-layer high-frequency vibrating screen or probability screen with a screen aperture size of 5 to 40 mm in a multi-stage combination structure, used to sort iron ore into at least two different particle sizes of finished ore.

[0035] The feeding system includes a feeding hopper, a variable frequency belt feeder, and an anti-blocking structure. The variable frequency belt feeder is connected to the intelligent control system and is used to automatically adjust the feeding speed according to the real-time screening load.

[0036] The finished product grading and storage system includes multiple independent ore bins, an automatic switching and distributing device, and a material level detection unit, which are used to transport and store iron ore separately according to the screening particle size.

[0037] See Figure 2As shown, another embodiment of the present invention comprises an intelligent control system including a data acquisition module, an intelligent analysis module, a control execution module, and a human-computer interaction module; wherein: The data acquisition module is used to collect data on vibration parameters, motor current, material flow rate, and particle size distribution of the screening equipment. The intelligent analysis module is used to assess screening efficiency and screen clogging risk based on algorithm models; The control execution module is used to output control commands to adjust the operating parameters of the screening equipment.

[0038] The intelligent analysis module uses a screening status recognition algorithm based on rule models or machine learning models to determine the working conditions such as screen blockage, overload operation, or decreased screening efficiency.

[0039] The control execution module is used to dynamically adjust at least one of the following parameters: screening amplitude, vibration frequency, screen surface inclination angle, and feed rate, in order to achieve adaptive optimization of the screening conditions.

[0040] The system also includes a remote monitoring and data storage module, which is used to realize centralized monitoring of port sorting warehouses, storage of historical data and automatic generation of operation reports.

[0041] The system is suitable for continuous and automated screening of iron ore, lump ore, fine ore and mixed ore in ports, and has the effects of improving screening efficiency, reducing manual intervention and reducing equipment failure rate.

[0042] The above description is merely a specific embodiment of this application, but the scope of protection of this application is not limited thereto. Any variations or substitutions that can be easily conceived by those skilled in the art within the technical scope disclosed in this application should be included within the scope of protection of this application. Therefore, the scope of protection of this application should be determined by the scope of the claims.

Claims

1. A two-stage screening process and intelligent control system for a port iron ore sorting warehouse, characterized in that, It includes a feeding system, a first-stage coarse screening system, a first-stage under-screen conveying system, a second-stage fine screening system, a finished product grading and storage system, and an intelligent control system, all connected in sequence; wherein: The first coarse screening system is used for the primary separation of large-diameter impurities and oversized ore from iron ore entering the port. The second-stage fine screening system is used to perform fine particle size separation of qualified ore after the first-stage screening. The intelligent control system is used to monitor, analyze and adaptively regulate the equipment operating status, material particle size distribution, processing capacity and energy consumption parameters in the two-stage screening process in real time, so as to realize efficient, stable and low-energy-consumption sorting of iron ore.

2. The two-stage screening process and intelligent control system for port iron ore sorting warehouse according to claim 1, characterized in that, The first coarse screening system includes a heavy-duty bar screen or a heavy-duty vibrating screen with a screen aperture size ranging from 40 to 80 mm. It is used to remove large pieces of waste rock, agglomerated ore and non-ferrous impurities to reduce the load on the subsequent fine screening system.

3. The two-stage screening process and intelligent control system for port iron ore sorting warehouse according to claim 1, characterized in that, The second-stage fine screening system includes a multi-layer high-frequency vibrating screen or probability screen with a screen aperture size of 5 to 40 mm in a multi-stage combination structure, used to sort iron ore into at least two different particle sizes of finished ore.

4. The two-stage screening process and intelligent control system for the port iron ore sorting warehouse according to claim 1, characterized in that, The feeding system includes a feeding bin, a variable frequency belt feeder, and an anti-blocking structure. The variable frequency belt feeder is connected to the intelligent control system and is used to automatically adjust the feeding speed according to the real-time screening load.

5. The two-stage screening process and intelligent control system for port iron ore sorting warehouse according to claim 1, characterized in that, The finished product grading and storage system includes multiple independent ore bins, an automatic switching and distributing device, and a material level detection unit, which are used to transport and store iron ore according to the screening particle size.

6. The two-stage screening process and intelligent control system for port iron ore sorting warehouse according to claim 1, characterized in that, The intelligent control system includes a data acquisition module, an intelligent analysis module, a control execution module, and a human-machine interaction module; wherein: The data acquisition module is used to collect data on vibration parameters, motor current, material flow rate, and particle size distribution of the screening equipment. The intelligent analysis module is used to assess screening efficiency and screen clogging risk based on algorithm models; The control execution module is used to output control commands to adjust the operating parameters of the screening equipment.

7. The two-stage screening process and intelligent control system for a port iron ore sorting warehouse according to claim 6, characterized in that, The intelligent analysis module employs a screening status recognition algorithm based on rule-based or machine learning models to determine the operating conditions such as screen blockage, overload operation, or decreased screening efficiency.

8. The two-stage screening process and intelligent control system for a port iron ore sorting warehouse according to claim 6, characterized in that, The control execution module is used to dynamically adjust at least one of the following parameters: screening amplitude, vibration frequency, screen surface inclination angle, and feed rate, so as to achieve adaptive optimization of screening conditions.

9. The two-stage screening process and intelligent control system for port iron ore sorting warehouse according to claim 1, characterized in that, The system also includes a remote monitoring and data storage module, which is used to realize centralized monitoring of port sorting warehouses, storage of historical data and automatic generation of operation reports.

10. The two-stage screening process and intelligent control system for a port iron ore sorting warehouse according to claim 1, characterized in that, The system is suitable for continuous and automated screening of iron ore, lump ore, fine ore and mixed ore in ports, and has the effects of improving screening efficiency, reducing manual intervention and reducing equipment failure rate.

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