Prevention and Handling Study of Spontaneous Combustion Coal Middle Calorific Value (Mcv) In Stockpile Tripper Port PT. Antam Tbk Ubpn Southeast Sulawesi Pomalaa District
Research on the prevention and handling of spontaneous combustion of middle calorific value coal (MCV) in Stockpile Tripper Port of PT. Aneka Tambang Tbk Nickel Mining Business Unit Southeast Sulawesi. The research undertaken aims to provide an effective method of preventing and handling spontaneous combustion in MCV coal stacks. The method used in this research is using prevention method in the form of solidification on the edge of MCV coal stack and handling method in the form of volcano trap manufacture, coal dust disposal, and discharge coal of MCV coal fire. From the results of the review and measurement it is known that the average temperature of MCV coal stack before the prevention and handling at the pile surface is 74 oC and at depth ± 20 cm 106 oC, after compaction temperature at surface 39 oC and depth ± 20 cm 34 oC, after manufacture volcano trap temperature at a depth of ± 20 cm 106 o C before 1 hour and depth ± 20 cm 72 oC after 1 hour, after harvesting and removal of coal ash / dust temperature at 48 oC surface and at depth ± 20 cm 40 oC, after taking and coal coals discharge temperature at 51 oC surface and at depth of ± 20 cm 42 oC with MCV coal quality that contains 8.15% Total Moisture, Inherent Moisture (IM) 6,92%, Volatile Matter (VM) 48,73 %, Ash Content 4.02%, Fixed Carbon (FC) 47.25% and Gross Calorific Value (GCV) 6348,76 Kcal / Kg. Based on the results of research methods of prevention and effective handling in suppressing temperature rise which results can inhibit the occurrence of spontaneous combustion on MCV coal pile in Stockpile Tripper Port.
Keywords: Spontaneous combustion, Prevention, Handling, Temperature