PENGARUH KONSENTRASI HYDROSOL DALAM MENGATASI SWABAKAR BATUBARA PADA STOCKPILE PT. BHUMI RANTAU ENERGI

Storing coal for a long duration of time in the stockpile can cause company to lose money because possibility self-ignition is greater. Spraying treatment using hydrosol will wet evenly so that it coat and prevent self-ignition. This study was made analyze changes temperature due use Hydrosol determine best concentration self-heating. The operational design research by separating products. Then, four concentrations were be applied product spraying. After spraying each product, data collected measuring every day. from results showed increase 20 days stacking illustrated effect get application company's production pr˚Cess. with (0.0%; 0.5%, 1.O%; 1.5%) affected pile range 32.4˚C 55.3˚C where initial critical self-heating 50.7˚C. For this reason, temperatures above 50˚C must given again such as compaction during stacking; l.5o% concentration, which mixture 98.5 liters water 1.5 10 tons coal, produced lowest final all stacks, namely 41.3˚C.