PEMANFAATAN BATUBARA KUALITAS RENDAH SEBAGAI BAHAN KOKAS MELIBATKAN PROSES DESULFURISASI, DEMINERALISASI DAN KARBONISASI

Abstrak

Coal from Mallawa village, Bone-Pangkep Regency of South Sulawesi included in young coal rank, with content of :2.64% moisture, 46.16% of volatile matter, 15.26% ash, 35.96% fixed carbon, 1.73% sulfur and heat value of 5190kcal / kgram this coal includes subbituminous coal category. This coal will be upgrade to be bituminous rank coalthrough desulfurization and demineralization process and continued with carbonization process. The desulfurizationprocess using 20% HCl solution aims to reduce sulfur content, demineralization process using 20% NaOH solution todecrease the ash content and carbonization process aims to reduce the content of volatile matter and to increase fixedcarbon content . Coal of subbituminus from Mallawa can be processed into coal bituminous, with desulfurizationprocess can reduce sulfur content from 1.73% to 0.365%, while in demineralization process can decrease ash contentfrom 15.26% to 9.98% and carbonization process at 500 oC with time for 240 minutes can be reduce of volatile matter46.16% to 13.08%, while water content decreased from 2.64% to 1.16%, carbon content increase from 35.96%, to85.67%, and the heat value increased from 5190 kcal / kgram become 7931,69 kkal / kgram. Coal with the content asabove can be categorized coal type bituminus or coking coal can be utilized as raw material of cokes.Keyword : desulfurization ,demineralization, carbonization , coking coal