Process Monitoring And Fault Trace For Hydrometallurgy Cementation Process

The problem of resources has become a serious problem with the development of modern economy, so is mineral resource. So ensuring metal resource fully extracted from the existing mineral resource is of great importance. In order to guarantee that the hydrometallurgy production process operates safely and efficiently, online process monitoring and fault diagnosis is of great significance. This thesis is based on hydrometallurgy cementation process, and the process monitoring and fault diagnosis methods are deeply researched.The principal component analysis is a monitoring method based on normal process data and process mechanism model is dispensable for the method. So it is used widely in process monitoring and fault diagnosis field of the complex industrial production. But the shortcoming of the method is that abnormal variables causing the system exception may not be tracked and the root cause of system failure isn’t diagnosed. In order to solve the problem, a method combining the fault tree analysis with the principal component analysis and process monitoring is proposed, and fault trace for hydrometallurgy cementation process is achieved.Process monitoring and fault trace for hydrometallurgy cementation process is achieved with two steps. The first step is to achieve process monitoring based on Principal Component Analysis and the second step is to trace further fault source which causes the system exception using the fault data analysis. The fault data analysis for the second step is a fault diagnosis method based on knowledge. The fault is traced further by the method of tracing the fault variables with the first step and the mechanism of the production process.For the convenience of verification, Principal Component Analysis and Fault Tree Analysis are core algorithm for process monitoring and fault trace for hydrometallurgy cementation process and the experimental platform for process monitoring and fault trace for hydrometallurgy cementation process is designed in this thesis using Ado.net, Matlab&.Net. The system consists of four parts:system database storing application data of monitoring system, core algorithm for achieving cementation process monitoring, data interface guaranteeing communication of system, the system interface displaying monitoring results, process information and human-computer interaction. The monitoring and fault traced algorithm in this thesis is carried out in the system platform. So the feasibility and effectiveness of monitoring algorithm for process monitoring and fault trace for hydrometallurgy cementation process are verified.