摘要
Abstract
As a continuous industrial production system,the concentrator regards the flotation process as the core link determining the final concentrate grade and recovery rate.The stable operation of fixed equipment including flotation machines,mixing barrels and feed pumps in the process is crucial to production continuity.Aiming at the problems existing in a domestic concentrator that the original DCS system failed to cover the signal acquisition of flotation equipment and the manual patrol mode had the defect of response lag,which resulted in heavy equipment shutdown losses and a low MTTR(Mean Time to Repair)index,a monitoring and alarm system based on optical fiber relay signal transmission technology was proposed.The system collects signals such as auxiliary contacts of equipment contactors and output contacts of frequency converters,conducts centralized conversion through the optical fiber relay cabinet,and then transmits the signals to PLC remotely.Combined with WINCC configuration,it realizes signal visualization and abnormal alarm functions.The 2-year practical operation data shows that the system can shorten the fault repair time by 1 hour per occurrence,reduce annual economic losses by 2 million yuan and save 200 thousand yuan of third-party development costs.Meanwhile,it greatly reduces routing inspection workload and labor costs,significantly improves the continuity and stability of flotation equipment operation,and provides reliable technical support for the intelligent upgrading of concentrators.关键词
浮选设备/光纤传输/信号采集/PLC控制/状态监测/故障报警Key words
Flotation equipment/Fiber optic transmission/Signal acquisition/PLC control/Status monitoring/Fault Alarm分类
矿业与冶金
