Std. order
Calcinations temp (oC) X1 Calcinations temp (oC) X1 Leaching temp (oC) X2 Leaching temp (oC) X2 Acid conc. (mol/cm3) X3 Acid conc. (mol/cm3) X3
Liquid/solid ratio (cm3/g) X4
Liquid/solid ratio (cm3/g) X4
Stirring speed (rpm) X5
Stirring speed (rpm) X5
Yield (%)
Yield (%)
Coded Real Coded Real Coded Real Coded Real Coded Real Exp. Values Predicted values
1 -1 400 -1 45 -1 0.5 -1 4 -1 90 39.8 46.0
2 +1 850 -1 45 -1 0.5 -1 4 -1 90 59.5 56.6
3 -1 400 +1 90 -1 0.5 -1 4 -1 90 57.6 56.5
4 +1 850 +1 90 -1 0.5 -1 4 -1 90 66.1 64.9
5 -1 400 -1 45 +1 3 -1 4 -1 90 54.9 56.9
6 +1 850 -1 45 +1 3 -1 4 -1 90 67.3 64.4
7 -1 400 +1 90 +1 3 -1 4 -1 90 66.5 63.8
8 +1 850 +1 90 +1 3 -1 4 -1 90 70.1 69.1
9 -1 400 -1 45 -1 0.5 +1 16 -1 90 58.2 55.3
10 +1 850 -1 45 -1 0.5 +1 16 -1 90 64.9 64.8
11 -1 400 +1 90 -1 0.5 +1 16 -1 90 57.8 62.3
12 +1 850 +1 90 -1 0.5 +1 16 -1 90 72.4 69.7
13 -1 400 -1 45 +1 3 +1 16 -1 90 67.9 66.9
14 +1 850 -1 45 +1 3 +1 16 -1 90 71.2 73.4
15 -1 400 +1 90 +1 3 +1 16 -1 90 73.2 70.3
16 +1 850 +1 90 +1 3 +1 16 -1 90 73.5 74.6
17 -1 400 -1 45 -1 0.5 -1 4 +1 720 47.3 49.1
18 +1 850 -1 45 -1 0.5 -1 4 +1 720 58.6 58.4
19 -1 400 +1 90 -1 0.5 -1 4 +1 720 61.2 56.9
20 +1 850 +1 90 -1 0.5 -1 4 +1 720 63.9 63.9
21 -1 400 -1 45 +1 3 -1 4 +1 720 62.9 58.3
22 +1 850 -1 45 +1 3 -1 4 +1 720 64.9 64.6
23 -1 400 +1 90 +1 3 -1 4 +1 720 59.2 62.4
24 +1 850 +1 90 +1 3 -1 4 +1 720 66.9 66.4
25 -1 400 -1 45 -1 0.5 +1 16 +1 720 52.8 50.1
26 +1 850 -1 45 -1 0.5 +1 16 +1 720 55.2 58.4
27 -1 400 +1 90 -1 0.5 +1 16 +1 720 51.9 54.4
28 +1 850 +1 90 -1 0.5 +1 16 +1 720 62.3 60.5
29 -1 400 -1 45 +1 3 +1 16 +1 720 54.2 60.1
30 +1 850 -1 45 +1 3 +1 16 +1 720 69.3 65.4
31 -1 400 +1 90 +1 3 +1 16 +1 720 61.7 60.7
32 +1 850 +1 90 +1 3 +1 16 +1 720 69.2 63.8
33 -2 89.9 0 67.5 0 1.75 0 10 0 405 57.4 54.5
34 +2 1160 0 67.5 0 1.75 0 10 0 405 65.3 70.6
35 0 625 -2 13.9 0 1.75 0 10 0 405 54.8 53.2
36 0 625 +2 121 0 1.75 0 10 0 405 59.9 63.8
37 0 625 0 67.5 -2 -1.22 0 10 0 405 51.3 50.4
38 0 625 0 67.5 +2 4.72 0 10 0 405 63.9 67.2
39 0 625 0 67.5 0 1.75 -2 -4.27 0 405 49.9 51.8
40 0 625 0 67.5 0 1.75 +2 24.27 0 405 59.1 59.6
41 0 625 0 67.5 0 1.75 0 10 -2 -344 64.3 64.9
42 0 625 0 67.5 0 1.75 0 10 +2 1154 53.9 55.7
43 0 625 0 67.5 0 1.75 0 10 0 405 78.8 79.6
44 0 625 0 67.5 0 1.75 0 10 0 405 79.3 79.6
45 0 625 0 67.5 0 1.75 0 10 0 405 79.4 79.6
46 0 625 0 67.5 0 1.75 0 10 0 405 79 79.6
47 0 625 0 67.5 0 1.75 0 10 0 405 79 79.6
48 0 625 0 67.5 0 1.75 0 10 0 405 79.4 79.6
49 0 625 0 67.5 0 1.75 0 10 0 405 80 79.6
50 0 625 0 67.5 0 1.75 0 10 0 405 80 79.6