Separation Process of Fine Coals by Ultrasonic Vibration Gas-Solid Fluidized Bed

Table 2

Sulfur content of each layer of product.

Layer number	Sulfur content/%
	1.2	1.4	1.6	1.8	2.0	2.2	2.4
First layer	2.12	1.76	1.34	1.25	1.22	1.58	2.25
Second layer	2.23	2.03	1.92	1.78	1.80	1.89	2.28
Third layer	2.33	2.38	2.02	1.84	1.92	2.44	2.96
Forth layer	2.45	2.27	2.13	2.10	2.15	2.53	3.12
Fifth layer	5.36	6.15	6.33	6.78	6.59	5.62	4.98