Peningkatan Kadar Batubara Peringkat Rendah Asal Sorong dan Baturona dengan Metode Evaporasi dan Tar Coating di Laboratorium Batubara Pusitbang tekMIRA

Aria Rahman, Dudi Nasrudin Usman, Solihin Solihin

Abstract


Abstract. Within 5 years back, coal mining industry declined these have an impact on the whole coal mining are forced to pause on the process of coal mining coal prices to rise again. The necessity of the study of why dipasarnya coal prices declining, if possible from the coal quality so that devotees are declining. What is because coal mining coal in Indonesia generally potentially low pringkat such as the high level of swabakarnya lignite and low caloric value. Therefore it needs to be done the way coal is lignite coal can compete with the high quality, created a method of upgrading batubra in order to increase the heat value and lowering water levels, one of which is the method of evaporating and tar coating. Conto came from the Slide and Baturona and tested in the laboratory of coal in tekMIRA Acehnese remain vulnerable. In the conto do diminution of sizes up to size 3 mesh is then added on the coal tar. The addition of tar as a cover the surface of the pores of coal so that it closed so water levels will not go back. As for the temperature variations are used i.e. the temperature of 100 ° C, 150 ° C and 200 ° c. For variations of heating for 2 hours and 4 minutes. In addition to the size of sample 3 mesh, the sample size also prepared 200 mesh. The sample used to test prosimat testing requirements covering testing moisture content of humid and heat value. Earlier also sought the value of moisture content daily with damp conto mesh measuring 3.

Keywords: Low-Rank Coal, Increased Levels, Tar Coating

Abstrak. PT Dalam waktu 5 tahun kebelakang, industri pertambangan batubara menurun ini berdampak pada seluruh indutri pertambangan batubara terpaksa untuk berhenti sejenak pada proses penambangan batubara sampai harga batubaranya kembali meningkat. Perlunya pengkajian tentang mengapa harga batubara dipasarnya menurun, apakah mungkin dari kualitas batubaranya tersebut sehingga peminatnya menurun. Apa karena tambang batubara Indonesia umumnya berpotensi pada batubara pringkat rendah seperti lignit yang tingkat swabakarnya tinggi serta nilai kalori rendah. Oleh karena itu perlu dilakukan cara bagaimana batubara lignit dapat bersaing dengan batubara kualitas tinggi, diciptakan suatu metode upgrading batubra guna untuk meningkatkan nilai kalor dan menurunkan kadar airnya, salah satunya ialah metode evaporasi dan tar coating. Conto yang digunakan berasal dari Sorong dan Baturona dan di uji di laboratorium batubara di Puslitbang tekMIRA. Pada conto dilakukan pengecilan ukuran sampai berukuran 3 mesh kemudian ditambahkan tar pada batubara tersebut. Penambahan tar sebagai penutup permukaan pori-pori batubara agar tertutup sehingga kadar airnya tidak akan masuk kembali. Adapun variasi suhu yang digunakan yaitu suhu 100°C, 150°C, dan 200°C. Untuk variasi pemanasan selama 2 jam dan 4 jam. Selain ukuran sample 3 mesh, disiapkan juga sample berukuran 200 mesh. Sample tersebut digunakan untuk kebutuhan pengujian uji prosimat meliputi pengujian kadar air lembab dan nilai kalor. Sebelumnya juga dicari nilai kadar air lembab harian dengan conto berukuran 3 mesh.

Kata Kunci: Batubara Peringkat Rendah, Peningkatan Kadar, Tar Coating

Keywords


Batubara Peringkat Rendah, Peningkatan Kadar, Tar Coating

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References


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