Rehabilitation of the Ombilin Coal Preparation Plant with Automatic Jig Controller in Indonesia

摘要

In this study, a control system incorporating the know-how of the skilled operators using fuzzy logic is applied by using on-line ash monitors as a jig control system sensor to the rehabilitation of a coal preparation plant of the Ombilin Mine in Indonesia. The computer simulation experiments demonstrate that the immediate response can be improved by means of modification of the fuzzy rules. Based on the results of the simulation experiments, it is clear that the present proportional/ integral-operation fuzzy control system is effective in mitigating the long down-time due to the sampling interval of the ash monitor, and also in mitigating the parameter variations due to the properties of raw coal. Demonstration experiments conducted with real equipment on-site realized that the jig control system using on-line ash monitors was capable of being applied to an actual coal preparation plant.