Preliminary design of middlings recleaned renovation project

According to the analysis of the nature of middlings of the Bailong coal plant, the production rate of middlings about washed coal take for 16.55% of raw coal, ash content of+13mm middlings is low. Clean coal can be dissociated by middlings crusher, and coal comprehensive utilization can be improved, and designed re-election programs for the preliminary, and analyzed the economic efficiency of the coal re-election, and firmed the whole production index is more stable.