The Porosity Dynamic Model of the Compacted Broken Coal

Figure 4

Screening coal samples with different particle sizes: (a) 10 ≤ d ≤ 15 mm coal sample, (b) 6 ≤ d ≤ 10 mm coal sample, (c) 3 ≤ d ≤ 6 mm coal sample, (d) 1 ≤ d ≤ 3 mm coal sample, (e) 0.6 ≤ d ≤ 1 mm coal sample, and (f) 0.3 ≤ d ≤ 0.6 mm coal sample.

(a)

(b)

(c)

, (d)

(e)

(f)