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摇床接矿智能控制系统的设计与工业应用

Design and industrial application of intelligent control system for shaking table-based concentrate collection

  • 摘要: 针对选矿厂摇床接矿作业依赖人工调整接矿板位置,导致矿石分选精度不稳定及资源浪费等问题,设计了一套基于机器视觉与深度学习的摇床接矿智能控制系统。该系统采用“预备层—控制层—应用层”三级架构,构建了从图像采集、矿带识别到接矿板控制的闭环自动化流程。在算法层面,提出OreBound-YOLO矿带分界点识别算法,该算法在YOLOv7网络结构的基础上,通过C3k2卷积模块重构主干网络以提升特征提取效率,引入FPN+PAN(特征金字塔网络+路径聚合网络)结构实现双向多尺度特征融合,嵌入C2PSA注意力机制以增强对弱边界区域的感知能力,并采用EIoU损失函数优化边界框回归精度。工业试验结果表明,该系统运行稳定,能够有效提升精矿品位(精矿WO3品位提高2.4~2.9倍,精矿Sn品位提高1.4~2.1倍),降低尾矿品位,显著提高矿石资源利用率,同时大幅减少对人工操作的依赖,降低企业运营成本。研究成果为实现摇床接矿过程的智能化控制提供了可靠的技术路径与系统方案,对推动选矿过程的自动化升级与资源高效利用具有实际意义。

     

    Abstract: To address the problems of unstable mineral processing accuracy and resource waste caused by manual adjustment of the concentrate splitter position in shaking table-based concentrate collection operations at mineral processing plants, an intelligent control system for shaking table-based concentrate collection relying on machine vision and deep learning was designed. The system adopted a three-level architecture consisting of "preparation layer, control layer, and application layer", establishing a closed-loop automated process from image acquisition and mineral belt recognition to concentrate splitter control. At the algorithmic level, the OreBound-YOLO mineral belt boundary point recognition algorithm was proposed. Based on the YOLOv7 network, this algorithm reconstructed the backbone network with the C3k2 convolution module to improve feature extraction efficiency, introduced the feature pyramid network + path aggregation network (FPN + PAN) structure to achieve bidirectional multi-scale feature fusion, embedded the C2PSA attention mechanism to enhance perception of weak boundary regions, and adopted the EIoU loss function to optimize bounding box regression accuracy. Industrial test results show that the system operates stably, effectively improving concentrate grade (the WO3 grade of the concentrate increases by 2.4–2.9 times, and the Sn grade increases by 1.4–2.1 times), reducing tailings grade, and significantly improving ore resource utilization, while greatly reducing reliance on manual operations and lowering enterprise operating costs. The research results provide a reliable technical path and system solution for realizing intelligent control of the shaking table-based concentrate collection process and have practical significance for promoting the automation upgrade of the mineral processing process and efficient resource utilization.

     

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