The Sintering Process Computer Control System Design And Application

In this paper, with the Pb-Zn sintering process of Imperial Smelting Process(ISP) in Shaoguan Smeltery Works as study object, the design and implementation of y XL Distributed Control System(DCS) of sintering process is fulfilled as well as the development of Optimal Control System. Based on the analysis of mechanism of sintering process, the key factors and procedures for production and quality of sintering are discussed. Designing this computer control system must take process stabilization and parameter optimization into account. u XL DCS is a powerful and competitive system with easy extension, perfect control, convenient data dealing, concentrated operation, friendly interface, simple and canonical installation, expedient debugging and safe and reliable running. By system configuration and software development for control, all important parameters in sintering process are stabilized and key procedures such like mineral blending and watering are insured for stability and precision. The Optimal Control System of sintering process is composed of state parameters module and optimal control module. State parameters module includes prediction models for several production targets such as synthesized permeability, yields of agglomerate, sulfur content and plumbum content in agglomerate. The sintering state is judged and evaluated by the prediction results. If it is not good enough, optimal control module based on principle component analysis and clustering search will function for optimization. This algorithm makes no request for accurate analytical model and maintains search efficiency and self-adjusting performance by an optimal parameter set derived from process data, which is proved to be effective.By practical running of DCS, a prominent tracing performance is gained and variation of parameters is limited in a small range, which enhance stability and production benefit of sintering process obviously. In the end of the dissertation, the achievements are concluded and further research suggestions are discussed.