Download - USE OF MILL TESTS FOR MILLING OPTIMIZATION
USE OF MILL TESTS FOR MILLING OPTIMIZATION
HAROLD S. BIRKETT
MILL TEST METHOD
• COLLECT CANE GOING INTO MILL
• COLLECT BAGASSE OUT OF EACH MILL
• ANALYZE SAMPLES FOR:
– MOISTURE (DRY)
– POL (BLENDER)
– FIBER (BLENDER, WASH, DRY)
MILL TEST METHOD
• PLOT MOISTURE CURVE
• CALCULATE POL EXTRACTION AS:
POL % FIBER INTO MILL – POL % FIBER OUT MILL X 100 POL % FIBER INTO MILL
BRIX CURVE
02
468
10
121416
1820
1 2 3 4 5 6
MILL NUMBER
BR
IX %
JU
ICE
.
BACK FRONT
MOISTURE CURVE
50
55
60
65
70
75
1 2 3 4 5 6
MILL NUMBER
MO
IST
UR
E %
BA
GA
SS
E .
EXTRACTION CURVE
0
10
20
30
40
50
60
1 2 3 4 5 6
MILL NUMBER
PO
L E
XT
RA
CT
ION
, %
.
02
46
81012
1416
1820
1 2 3 4 5 6
MILL NUMBER
BR
IX %
JU
ICE
.
BACK FRONT
50
55
60
65
70
75
1 2 3 4 5 6
MILL NUMBER
MO
ISTU
RE %
BAG
ASSE
.
0
10
20
30
40
50
60
1 2 3 4 5 6
MILL NUMBER
POL
EXTR
ACT
ION,
%
.
BRIX CURVE
0
24
68
10
1214
1618
20
1 2 3 4 5 6
MILL NUMBER
BR
IX %
JU
ICE
.
BACK FRONT
MOISTURE CURVE
50
55
60
65
70
75
1 2 3 4 5 6
MILL NUMBER
MO
IST
UR
E %
BA
GA
SS
E .
EXTRACTION CURVE
0
10
20
30
40
50
60
1 2 3 4 5 6
MILL NUMBER
EX
TR
AC
TIO
N, %
.
0
24
68
10
1214
1618
20
1 2 3 4 5 6
MILL NUMBER
BR
IX %
JU
ICE
.
BACK FRONT
50
55
60
65
70
75
1 2 3 4 5 6
MILL NUMBER
MO
ISTU
RE
% B
AG
AS
SE
.
0
10
20
30
40
50
60
1 2 3 4 5 6
MILL NUMBER
EX
TRA
CTI
ON
, %
.
BRIX CURVE
02
46
81012
1416
1820
1 2 3 4 5
MILL NUMBER
BR
IX %
JU
ICE
.
BACK FRONT
MOISTURE CURVE
50
55
60
65
70
75
1 2 3 4 5
MILL NUMBER
MO
IST
UR
E %
BA
GA
SS
E .
EXTRACTION CURVE
0
10
20
30
40
50
60
1 2 3 4 5
MILL NUMBER
PO
L E
XT
RA
CT
ION
, %
.
02
46
81012
1416
1820
1 2 3 4 5
MILL NUMBER
BR
IX %
JU
ICE
.
BACK FRONT
50
55
60
65
70
75
1 2 3 4 5
MILL NUMBER
MO
ISTU
RE
% B
AG
AS
SE
.
0
10
20
30
40
50
60
1 2 3 4 5
MILL NUMBER
POL
EXTR
AC
TIO
N, %
.