Table 3 Scheme and results of the Plackett–Burman test.
No. | Parameters | Angle of repose \(\theta\)/(°) | |||||||
|---|---|---|---|---|---|---|---|---|---|
\(A\) | \(B\) | \(C\) | \(D\) | \(E\) | \(F\) | \(G\) | \(H\) | ||
1 | 0.1 | 7450 | 0.1 | 0.75 | 0.4 | 0.3 | 0.25 | 0.15 | 52.63 |
2 | 0.05 | 7450 | 0.3 | 0.55 | 0.4 | 0.3 | 0.45 | 0.15 | 44.64 |
3 | 0.1 | 6650 | 0.3 | 0.75 | 0.2 | 0.3 | 0.45 | 0.35 | 38.11 |
4 | 0.05 | 7450 | 0.1 | 0.75 | 0.4 | 0.1 | 0.45 | 0.35 | 52.54 |
5 | 0.05 | 6650 | 0.3 | 0.55 | 0.4 | 0.3 | 0.25 | 0.35 | 42.18 |
6 | 0.05 | 6650 | 0.1 | 0.75 | 0.2 | 0.3 | 0.45 | 0.15 | 38.04 |
7 | 0.1 | 6650 | 0.1 | 0.55 | 0.4 | 0.1 | 0.45 | 0.35 | 45.03 |
8 | 0.1 | 7450 | 0.1 | 0.55 | 0.2 | 0.3 | 0.25 | 0.35 | 42.86 |
9 | 0.1 | 7450 | 0.3 | 0.55 | 0.2 | 0.1 | 0.45 | 0.15 | 40.56 |
10 | 0.05 | 7450 | 0.3 | 0.75 | 0.2 | 0.1 | 0.25 | 0.35 | 53.77 |
11 | 0.1 | 6650 | 0.3 | 0.75 | 0.4 | 0.1 | 0.25 | 0.15 | 55.24 |
12 | 0.05 | 6650 | 0.1 | 0.55 | 0.2 | 0.1 | 0.25 | 0.15 | 45.45 |
13 | 0.075 | 7050 | 0.2 | 0.65 | 0.3 | 0.2 | 0.35 | 0.25 | 48.37 |