Industrial versus Laboratory Clinker Processing Using Grinding Aids (Scale Effect)
Table 3
Data collected over time during industrial grinding without or with GA.
Day/time, hr:min
GA, g/ton
Feed (B0), ton/hr
Mill sound, dB
Mill motor power, %
Rotor motor, kW
Air flow rate, m3/min
Rejects (B2), ton/hr
CL
Blaine, cm2/g
1/0:00
0
90.5
82
79.3
108.4
1366
38.8
1.43
3820
1/1:00
0
91
83.3
79.1
105.6
1380
40.7
1.45
3840
1/2:00
0
90.5
81.9
79.3
108
1365
38.9
1.43
3885
1/3:00
0
91.5
82.7
79.3
108.3
1294
39.6
1.43
3850
1/3:30
530
105.5
85.4
75.8
126.2
1423
97
1.92
4020
1/4:00
530
107
90
75
135.3
1325
86.6
1.81
3745
1/5:00
530
108.2
87.7
76.7
134
1290
97.5
1.90
3770
1/6:00
530
114
86.9
81.7
142.6
1264
87.8
1.77
3820
1/7:00
530
110.4
84
80.4
136.5
1255
83
1.75
3905
1/8:00
530
111.6
83.4
78.8
138.8
1268
86.6
1.78
3790
1/9:00
530
110
82.1
79.1
140.2
1290
90.3
1.82
3880
1/10:00
530
109.3
82.9
79.2
135.7
1302
91.2
1.83
3820
1/11:00
530
110.5
83.3
79
141.9
1277
88
1.80
3745
2/0:00
460
97.6
86.1
74
113.5
1310
54.7
1.56
3660
2/0:30
460
99
85
75.9
113.8
1406
72
1.73
3835
2/1:00
460
100.6
85.7
76.1
122
1415
69.5
1.69
4105
2/2:00
460
104
78.3
80.4
120.7
1340
63.7
1.61
4000
2/3:00
460
103.1
81.3
78.5
121
1303
63.5
1.62
3860
2/4:00
460
103.6
80.7
78.8
128.1
1304
60.4
1.58
3825
2/5:00
460
104.2
82
79.6
130
1283
66
1.63
3905
2/6:00
460
105.3
77.6
81
126.5
1294
65.8
1.62
3880
2/7:00
460
104.4
79.5
78.8
126
1291
63.9
1.61
3845
Values in bold correspond to stable mill conditions. Glycol-based GA was used in the first testing day, while amine-based one was used in the second day.
