PENCUCIAN BATUBARA MENGGUNAKAN CHANCE CONE DENGAN MEDIA PASIR BESI

Hendri P. Perangin-angin (Jurusan Teknik Pertambangan, Fakultas Teknik Pertambangan dan Perminyakan Universitas Papua)

INTAN Jurnal Penelitian Tambang
Vol. 2 No. 2 (2019): INTAN Jurnal Penelitian Tambang

Study of coal washing was conducted by designing and creating chance cone equipment which was then continued by process performance test using iron sand as a separator medium. The variable used for this experiment was feed coal with the size of -12.5 +5 mm; -5mm +1.68 mm ; and -1.68 mm +0.85 mm, a mixer with a spinning speed of 44, 53, 72, 96, and 120 rpm, and a media relative density ( suspension of water and iron sand ) of 1.3 and 1.4 . From the result of sink – float test, the initial coal ash level of 7.91%, 5.73%, and 6.76% each was obtained. From the result of equipment performance test, the highest efficiency was obtained at 1.4 media relative density of 69.18% at mixer speed of 120rpm with bait size of -1,68 +0,85 mm and ash content of 6,39%.