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

Figure 7

Backscatter imagery of different mineral in heavy product: (a) pyrite; (b) quartz; (c) kaolinite; (d) iron oxide; (e) chalcopyrite; (f) gypsum.

(a)

(b)

(c)

(d)

(e)

(f)