Table 2. Results of Float-and-Sink Test of −6+3 mm Coal.

			cumulative float		cumulative sink		separation density ± 0.1
density (g/cm3)	fraction (%)	ash (%)	fraction (%)	ash (%)	fraction (%)	ash (%)	density (g/cm3)	fraction (%)
<1.3	1.74	2.83	1.87	2.83	100.00	25.13	1.30	59.50
1.3–1.4	57.76	2.86	59.50	2.86	98.25	25.53	1.40	67.89
1.4–1.5	10.13	8.60	69.63	3.69	40.49	57.86	1.50	13.03
1.5–1.6	2.90	18.91	72.53	4.30	30.37	74.28	1.60	5.43
1.6–1.8	2.53	38.37	75.06	5.45	27.46	80.13	1.70	2.53
1.8–2.0	2.23	50.13	77.30	6.74	24.93	84.37	1.90	2.23
>2.0	22.70	87.74	100.00	25.13	22.70	87.74
total	100	25.13