Application of Constant Power Logic Automatic Control in the Capacity Expansion and Transformation of an Autogenous Mill Concentrator in Central Shandong Area
A concentrator in central Shandong of Minmetals Mining Holdings Limited achieves the automatic control of each process parameter of grinding and classification system by retrofitting the existing autogenous and ball milling system with constant power logic automatic control,which improves the efficiency of grinding and classification greatly,increases the processing capacity of autogenous mill by 13.5%per unit per hour,and meets the standard of each beneficiation index.In light of that a new pre-separation process will be added before the concentrator,the application of the results of the automation transformation to the upcoming 7 MTPA expansion and technological upgrading project can reduce the investment by nearly 100 million yuan,make the design scheme more economical and reasonable.The mine independently carries out small but precise intelligent mine technological transformation,which is not only in line with national policy guidance and industry development trends,but also conducive to improving the operational efficiency of the mine,and it has certain demonstration significance.
autogenous-ball milling processautomatic controlprocessing capacity per unit per hourpreliminary design scheme
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