Evaluation of coking properties bituminous medium volatile coal, Batu Ayau Formation, Kutai Basin, Central Kalimantan

International Conference on Earth Science, Mineral, and Energy

地球科学;矿业工程;能源学

Tanggara, D.^1,2 ; Amijaya, D.H.^1 ; Surjono, S.S.^1

Geology Department, Universitas Gadjah Mada, 2 Grafika Street, Yogyakarta, Indonesia^1

Mining Program Study, Palangka Raya University, Yos Sudarso Street, Palangka Raya, Indonesia^2

关键词: Active coals;    Carbon content;    Coal analysis;    FTIR analysis;    Maceral analysis;    Sampling method;    Vitrinite reflectance;    Volatile matters;   

Others  :  https://iopscience.iop.org/article/10.1088/1755-1315/212/1/012032/pdf
DOI  :  10.1088/1755-1315/212/1/012032

来源: IOP

【 摘 要 】

Selected coal samples of Batu Ayau formation in Murung Raya, Central Kalimantan, Indonesia were analyzed in order to evaluate its coking properties for metallurgical propose. The samples from an active coal mine were collected using the channel sampling method and analyzed for proximate and ultimate coal analysis, maceral analysis, CSN, fluidity, FTIR and HGI analysis. The results indicated that the coals are classified into medium volatile bituminous in rank, based on 70.73% of fix carbon, 26.77 % of volatile matter, 1.06% vitrinite reflectance and FTIR analysis. In terms of petrographic, the coals are characterized by 97% dominant vitrinite group while inertinite and liptinite are only present in a small amount. The ultimate coal analysis shows the 85.72 % carbon content, 0.51% total sulfur content and 0.013% phosphorus. The resultant of CSN test showed value 9 and the maximum fluidity value is 1092 ddpm while HGI indicated value 97 as result. Therefore, medium volatile bituminous coal of Batu Ayau, which met the present testing as good quality coking coal, is suitable to be used as the material to make high-quality metallurgical coke for the blast furnace.