COAL MILL-1 GRINDING MEDIA CALCULATION FIRST CHAMBER Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
1.25 1.805 0.555
2.50 m 1.60 m
0.50 m C 0.40 66.46 132.91 degree (2Q /360)*3.14 *D 2.90 m 2 1/2 *L*d/2 m 2 1.811 m 2*1/2*b*h
h
A
bh (((d/2)^2 - h^2)^.5)*h 2 0.57 m
Area of ABC
=
OABC - OAC 2 1.24 m
Volume of ABC
=
Area * Length 3 1.98 m
Volume of circle
=
PI*((D^2)/4) * L 3 7.85 m
% filling (q)
=
Volume of ABC / Volume of circle*100 25.24 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 8.521239
8.52 MT
42.3 4.25
20.51851
Date-28-06-2008. COAL MILL-1 GRINDING MEDIA CALCULATION FIRST CHAMBER Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
2.50 m 1.60 m
0.61 m C 0.49 60.82 121.64 degree (2Q /360)*3.14 *D 2.65 m 2 1/2 *L*d/2 m 2 1.658 m 2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 0.67 m
Area of ABC
=
OABC - OAC 2 0.99 m
Volume of ABC
=
Area * Length 3 1.59 m
Volume of circle
=
PI*((D^2)/4) * L 3 7.85 m
% filling (q)
=
Volume of ABC / Volume of circle*100 20.22 %
Qty of Grinding Media = in first chamber
1.25 1.805 0.555
q*.01*density*volume 6.826806
6.83 MT
h A
1.25 0.61 42.3 4.25 20.51851
L
O Q
h
C
B
0.2
4
-28-06-2008.
L
O Q
h
C
B
0.244
4
COAL MILL-1 GRINDING MEDIA CALCULATION SECOND CHAMBER Diameter of the 2ed chamber length of the chamber
2.52 m 2.80 m
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.66 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.52 58.44
2Q= Length of area OABC =
116.88 degree (2Q /360)*3.14 *D 2.57 m
area of OABC
1/2 *L*d/2
=
m2
2 1.62 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 0.71 m
Area of ABC
=
OABC - OAC 2 0.91 m
Volume of ABC
=
Area * Length 3 2.55 m
Volume of circle
=
PI*((D^2)/4) * L 3 13.96 m
% filling (q)
=
Volume of ABC / Volume of circle*100 18.26 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
10.96 MT Date=28-06-2008 COAL MILL-1 GRINDING MEDIA CALCULATION SECOND CHAMBER Diameter of the 2ed chamber length of the chamber
2.52 m 2.80 m
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.59 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.47 62.11
2Q= Length of area OABC =
124.22 degree (2Q /360)*3.14 *D 2.73 m
area of OABC
1/2 *L*d/2
=
m2
2 1.72 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 0.66 m
Area of ABC
=
OABC - OAC 2 1.06 m
Volume of ABC
=
Area * Length 3 2.98 m
Volume of circle
=
PI*((D^2)/4) * L 3 13.96 m
% filling (q)
=
Volume of ABC / Volume of circle*100 21.33 %
1.26 0.59
Qty of Grinding Media = in first chamber
q*.01*density*volume
12.80 MT Note=1.5 MT of old cylpebs from raw mill-1,below 25*25 mm size added to chamber on 12-07-2008.
L
O Q
h
C
B
Date=28-06-2008
L
O Q
h
C
B
on 12-07-2008.
CEMENT MILL- II GRINDING MEDIA CALCULATION FIRST CHAMBER Date st Diameter of the 1 chamber 3.80 m length of the chamber 5.00 m In the figure, OC = Radius h = Empty Height 0.80 m L = Length of the chamber cos Q = h / oc = cos Q = h / oc = 0.42 Q = 65.13 2Q= 130.26 degree Length of area OABC = (2Q /360)*3.14 *D 4.32 m 2 area of area OABC = 1/2 *L*d/2 m 2 4.102 m Area of OAC = 2*1/2*b*h
1.9 25.11.08
bh (((d/2)^2 - h^2)^.5)*h 2 1.38 m
Area of ABC
=
OABC - OAC 2 2.72 m
Volume of ABC
=
Area * Length 3 13.61 m
Volume of circle
=
PI*((D^2)/4) * L 3 56.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 24.02 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 58.54351
58.54 MT
A
CEMENT MILL- II GRINDING MEDIA CALCULATION FIRST CHAMBER Date st Diameter of the 1 chamber 3.80 m length of the chamber 5.00 m In the figure, OC = Radius h = Empty Height 0.74 m L = Length of the chamber cos Q = h / oc = cos Q = h / oc = 0.39 Q = 67.11 2Q= 134.22 degree Length of area OABC = (2Q /360)*3.14 *D 4.45 m 2 area of area OABC = 1/2 *L*d/2 m 2 4.226 m Area of OAC = 2*1/2*b*h
1.9 02.12.08
bh (((d/2)^2 - h^2)^.5)*h 2 1.29 m
Area of ABC
=
OABC - OAC 2 2.93 m
Volume of ABC
=
Area * Length 3 14.66 m
Volume of circle
=
PI*((D^2)/4) * L 3 56.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 25.86 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 63.02465
63.02 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION
A
FIRST CHAMBER
1.9 Date
Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
27.12.08
3.80 m 5.00 m
0.75 m
0.39 66.78 133.57 degree (2Q /360)*3.14 *D 4.43 m 2 1/2 *L*d/2 m 2 4.206 m 2*1/2*b*h
A
bh (((d/2)^2 - h^2)^.5)*h 2 1.31 m
Area of ABC
=
OABC - OAC 2 2.90 m
Volume of ABC
=
Area * Length 3 14.48 m
Volume of circle
=
PI*((D^2)/4) * L 3 56.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 25.55 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 62.27307
62.27 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION FIRST CHAMBER Date
1.9 12.02.09
Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
3.80 m 5.00 m
0.89 m
0.47 62.10 124.20 degree (2Q /360)*3.14 *D 4.12 m 2 1/2 *L*d/2 m 2 3.911 m 2*1/2*b*h
A
bh (((d/2)^2 - h^2)^.5)*h 2 1.49 m
Area of ABC
=
OABC - OAC 2 2.42 m
Volume of ABC
=
Area * Length 3 12.08 m
Volume of circle
=
PI*((D^2)/4) * L 3 56.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 21.32 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 51.95867
51.96 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION FIRST CHAMBER Date Diameter of the 1st chamber 3.80 m length of the chamber 5.00 m
1.9 23.05.09
In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
0.95 m
0.50 60.03 120.06 degree (2Q /360)*3.14 *D 3.98 m 2 1/2 *L*d/2 m 2 3.780 m 2*1/2*b*h
A
bh (((d/2)^2 - h^2)^.5)*h 2 1.56 m
Area of ABC
=
OABC - OAC 2 2.22 m
Volume of ABC
=
Area * Length 3 11.09 m
Volume of circle
=
PI*((D^2)/4) * L 3 56.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 19.56 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 47.66996
47.67 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION FIRST CHAMBER Date st Diameter of the 1 chamber 3.80 m length of the chamber 5.00 m In the figure, OC = Radius
1.9 26.06.09
h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
0.96 m
0.51 59.68 119.36 degree (2Q /360)*3.14 *D 3.96 m 2 1/2 *L*d/2 m 2 3.758 m 2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.57 m
Area of ABC
=
OABC - OAC 2 2.18 m
Volume of ABC
=
Area * Length 3 10.92 m
Volume of circle
=
PI*((D^2)/4) * L 3 56.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 19.27 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 46.96366
46.96 MT
A
0.8
L
O
C
Q
h
C
A B
0.74
L
O
C
Q
h A B
0.194737
4
0.75
L
O
C
Q
h A
B
0.197368
4
0.89
L
O
C
Q
h A B
4
0.95
L
O
C
Q
h A B
4
0.96
L
O
C
Q
h A B
4
CEMENT MILL- II GRINDING MEDIA CALCULATION SECOND CHAMBER 27.10.2008. ed Diameter of the 2 chamber 3.82 m length of the chamber 6.75 m
1.91
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.61 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.32 71.41
2Q= Length of area OABC =
142.82 degree (2Q /360)*3.14 *D 4.76 m
area of OABC
1/2 *L*d/2
=
m2
2 4.54 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.10 m
Area of ABC
=
OABC - OAC 2 3.44 m
Volume of ABC
=
Area * Length 3 23.22 m
Volume of circle
=
PI*((D^2)/4) * L 3 77.32 m
% filling (q)
=
Volume of ABC / Volume of circle*100 30.03 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
99.86 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION SECOND CHAMBER 25-11-2008. ed Diameter of the 2 chamber 3.82 m length of the chamber 6.75 m
1.91
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.71 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.37 68.21
2Q= Length of area OABC =
136.42 degree (2Q /360)*3.14 *D 4.55 m
area of OABC
1/2 *L*d/2
=
m2
2 4.34 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.26 m
Area of ABC
=
OABC - OAC 2 3.08 m
Volume of ABC
=
Area * Length 3 20.80 m
Volume of circle
=
PI*((D^2)/4) * L 3 77.32 m
% filling (q)
=
Volume of ABC / Volume of circle*100 26.91 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
89.46 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION SECOND CHAMBER 02-12-2008. Diameter of the 2ed chamber 3.82 m length of the chamber 6.75 m
1.91
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.63 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.33 70.78
2Q= Length of area OABC =
141.55 degree (2Q /360)*3.14 *D 4.72 m
area of OABC
1/2 *L*d/2
=
m2
2 4.50 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.14 m
Area of ABC
=
OABC - OAC 2 3.37 m
Volume of ABC
=
Area * Length
3 22.74 m
Volume of circle
=
PI*((D^2)/4) * L 3 77.32 m
% filling (q)
=
Volume of ABC / Volume of circle*100 29.40 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
97.76 MT CEMENT MILL- II GRINDING MEDIA CALCULATION SECOND CHAMBER 02-12-2008. Diameter of the 2ed chamber 3.82 m length of the chamber 6.75 m
1.91
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.55 m
h
A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.29 73.30
2Q= Length of area OABC =
146.60 degree (2Q /360)*3.14 *D 4.88 m
area of OABC
1/2 *L*d/2
=
m2
2 4.66 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.01 m
Area of ABC
=
OABC - OAC 2 3.66 m
Volume of ABC
=
Area * Length 3 24.70 m
Volume of circle
=
PI*((D^2)/4) * L 3 77.32 m
% filling (q)
=
Volume of ABC / Volume of circle*100 31.94 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
106.20 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION SECOND CHAMBER 12-02-2008. Diameter of the 2ed chamber 3.82 m length of the chamber 6.75 m
1.91
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.56 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.29 72.99
2Q= Length of area OABC =
145.98 degree (2Q /360)*3.14 *D 4.86 m
area of OABC
1/2 *L*d/2
=
m2
2 4.64 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.02 m
Area of ABC
=
OABC - OAC
2 3.62 m
Volume of ABC
=
Area * Length 3 24.45 m
Volume of circle
=
PI*((D^2)/4) * L 3 77.32 m
% filling (q)
=
Volume of ABC / Volume of circle*100 31.62 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
105.14 MT
CEMENT MILL- II GRINDING MEDIA CALCULATION SECOND CHAMBER 6/26/2009 ed Diameter of the 2 chamber 3.82 m length of the chamber 6.75 m In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.81 m
cos Q = h / oc = cos Q = h / oc = cos Q =
0.42 64.94
2Q= Length of area OABC =
129.88 degree (2Q /360)*3.14 *D 4.33 m
area of OABC
1/2 *L*d/2
=
m2
2 4.13 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h
2 1.40 m
Area of ABC
=
OABC - OAC 2 2.73 m
Volume of ABC
=
Area * Length 3 18.44 m
Volume of circle
=
PI*((D^2)/4) * L 3 77.32 m
% filling (q)
=
Volume of ABC / Volume of circle*100 23.85 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
79.29 MT
0.64
L
O Q
h
C
B
0.69
L
O Q
h
C
B
5
0.63
L
O Q
h
B
5
0.55
L
O Q
h
B
5
2.8
0.56
L
O Q
h
B
5
CEMENT MILL- I GRINDING MEDIA CALCULATION FIRST CHAMBER Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
3.58 m 3.00 m
1.32 m
0.74 42.51 85.02 degree (2Q /360)*3.14 *D 2.65 m 2 1/2 *L*d/2 m 2 2.376 m 2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.60 m
Area of ABC
=
OABC - OAC 2 0.78 m
Volume of ABC
=
Area * Length 3 2.34 m
Volume of circle
=
PI*((D^2)/4) * L 3 30.18 m
% filling (q)
=
Volume of ABC / Volume of circle*100 7.75 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 10.06295
10.06 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION FIRST CHAMBER
2.65
0.86
Date Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = (2Q /360)*3.14 *D area of area OABC
=
1/2 *L*d/2
Area of OAC
=
2*1/2*b*h
28.11.2008
3.58 m 3.00 m
0.90 m
0.50 59.85 119.69 degree
A
3.74 m m2 2 3.345 m
bh (((d/2)^2 - h^2)^.5)*h 2 1.39 m
Area of ABC
=
OABC - OAC 2 1.95 m
Volume of ABC
=
Area * Length 3 5.86 m
Volume of circle
=
PI*((D^2)/4) * L 3 30.18 m
% filling (q)
=
Volume of ABC / Volume of circle*100 19.41 %
Qty of Grinding Media = q*.01*density*volume in first chamber 25.18624755
25.19 MT CEMENT MILL- I GRINDING MEDIA CALCULATION FIRST CHAMBER Date Diameter of the 1st chamber 3.58 m length of the chamber 3.00 m In the figure, OC = Radius
2.52 13.12.2008
0.73
h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = (2Q /360)*3.14 *D area of area OABC
=
1/2 *L*d/2
Area of OAC
=
2*1/2*b*h
0.73 m
0.41 65.97 131.93 degree
A
4.12 m m2 2 3.687 m
bh (((d/2)^2 - h^2)^.5)*h 2 1.19 m
Area of ABC
=
OABC - OAC 2 2.49 m
Volume of ABC
=
Area * Length 3 7.48 m
Volume of circle
=
PI*((D^2)/4) * L 3 30.18 m
% filling (q)
=
Volume of ABC / Volume of circle*100 24.79 %
Qty of Grinding Media = q*.01*density*volume in first chamber 32.17202453
32.17 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION FIRST CHAMBER Date st Diameter of the 1 chamber 3.58 m length of the chamber 3.00 m In the figure, OC = Radius h = Empty Height 0.62 m L = Length of the chamber cos Q = h / oc = cos Q = h / oc = 0.35
2.41 07.3.2009
0.62
Q = 2Q= Length of area OABC =
69.77 139.54 degree
A
(2Q /360)*3.14 *D
area of area OABC
=
1/2 *L*d/2
Area of OAC
=
2*1/2*b*h
4.36 m m2 2 3.900 m
bh (((d/2)^2 - h^2)^.5)*h 2 1.04 m
Area of ABC
=
OABC - OAC 2 2.86 m
Volume of ABC
=
Area * Length 3 8.58 m
Volume of circle
=
PI*((D^2)/4) * L 3 30.18 m
% filling (q)
=
Volume of ABC / Volume of circle*100 28.41 %
Qty of Grinding Media = q*.01*density*volume in first chamber 36.87600356
36.88 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION FIRST CHAMBER Date Diameter of the 1st chamber 3.58 m length of the chamber 3.00 m In the figure, OC = Radius h = Empty Height 0.75 m L = Length of the chamber cos Q = h / oc = cos Q = h / oc = 0.42 Q = 65.26 2Q= 130.52 degree Length of area OABC = (2Q /360)*3.14 *D 4.08 m
2.54 07.3.2009
area of area OABC
=
Area of OAC
=
2 1/2 *L*d/2 m 2 3.648 m 2*1/2*b*h
bh (((d/2)^2 - h^2)^.5)*h 2 1.22 m
Area of ABC
=
OABC - OAC 2 2.43 m
Volume of ABC
=
Area * Length 3 7.29 m
Volume of circle
=
PI*((D^2)/4) * L 3 30.18 m
% filling (q)
=
Volume of ABC / Volume of circle*100 24.14 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 31.33101
31.33 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION FIRST CHAMBER Date Diameter of the 1st chamber 3.58 m length of the chamber 3.00 m In the figure, OC = Radius h = Empty Height 0.74 m L = Length of the chamber cos Q = h / oc = cos Q = h / oc = 0.41 Q = 65.61 2Q= 131.23 degree Length of area OABC = (2Q /360)*3.14 *D 4.10 m 2 area of area OABC = 1/2 *L*d/2 m
2.53 25.05.2009
Area of OAC
=
2 3.667 m 2*1/2*b*h
bh (((d/2)^2 - h^2)^.5)*h 2 1.21 m
Area of ABC
=
OABC - OAC 2 2.46 m
Volume of ABC
=
Area * Length 3 7.38 m
Volume of circle
=
PI*((D^2)/4) * L 3 30.18 m
% filling (q)
=
Volume of ABC / Volume of circle*100 24.46 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 31.75093
31.75 MT
L
O
C
Q
h
C
A B
0.368715
4
L
O
C
Q
h
C
A B
0.251397
4
L
O
C
Q
h
C
A B
0.203911
4
L
C
h
O Q
Q
h
C
A B
0.173184
4
0.75
L
O
C
Q
h
C
A B
B
0.209497
4
0.74
L
O
C
Q
h
C
A B
0.206704
4
CEMENT MILL- I GRINDING MEDIA CALCULATION SECOND CHAMBER Diameter of the 2ed chamber length of the chamber
3.44 m 8.90 m
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.58 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.34 70.33
2Q= Length of area OABC =
140.66 degree (2Q /360)*3.14 *D 4.22 m
area of OABC
1/2 *L*d/2
=
m2
2 3.63 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 0.94 m
Area of ABC
=
OABC - OAC 2 2.69 m
Volume of ABC
=
Area * Length 3 23.94 m
Volume of circle
=
PI*((D^2)/4) * L 3 82.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 28.96 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
102.96 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION SECOND CHAMBER Date 28.11.2008 Diameter of the 2ed chamber 3.44 m length of the chamber 8.90 m
2.4
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.68 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.40 66.75
2Q= Length of area OABC =
133.49 degree (2Q /360)*3.14 *D 4.01 m
area of OABC
1/2 *L*d/2
=
m2
2 3.44 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.07 m
Area of ABC
=
OABC - OAC 2 2.37 m
Volume of ABC
=
Area * Length 3 21.10 m
Volume of circle
=
PI*((D^2)/4) * L 3 82.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 25.52 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
90.71 MT CEMENT MILL- I GRINDING MEDIA CALCULATION SECOND CHAMBER Date 13.12.2008 Diameter of the 2ed chamber 3.44 m length of the chamber 8.90 m
2.45
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.73 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.42 64.92
2Q= Length of area OABC =
129.84 degree (2Q /360)*3.14 *D 3.90 m
area of OABC
1/2 *L*d/2
=
m2
2 3.35 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.14 m
Area of ABC
=
OABC - OAC 2 2.21 m
Volume of ABC
=
Area * Length 3 19.70 m
Volume of circle
=
PI*((D^2)/4) * L 3 82.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100
23.83 % Qty of Grinding Media = in first chamber
q*.01*density*volume
84.71 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION SECOND CHAMBER Date 7.3.2009 ed Diameter of the 2 chamber 3.44 m length of the chamber 8.90 m
2.44
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.72 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.42 65.29
2Q= Length of area OABC =
130.57 degree (2Q /360)*3.14 *D 3.92 m
area of OABC
1/2 *L*d/2
=
m2
2 3.37 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.12 m
Area of ABC
=
OABC - OAC 2 2.24 m
Volume of ABC
=
Area * Length 3 19.98 m
Volume of circle
=
PI*((D^2)/4) * L 3 82.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 24.16 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
85.90 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION SECOND CHAMBER Date 15.04.09 Diameter of the 2ed chamber 3.44 m length of the chamber 8.90 m
2.5
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.78 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.45 63.06
2Q= Length of area OABC =
126.13 degree (2Q /360)*3.14 *D 3.78 m
area of OABC
1/2 *L*d/2
=
m2
2 3.25 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.20 m
Area of ABC
=
OABC - OAC 2 2.06 m
Volume of ABC
=
Area * Length 3 18.32 m
Volume of circle
=
PI*((D^2)/4) * L 3 82.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 22.16 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
78.79 MT
CEMENT MILL- I GRINDING MEDIA CALCULATION SECOND CHAMBER Date 25.05.09 ed Diameter of the 2 chamber 3.44 m length of the chamber 8.90 m
2.47
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.75 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.44 64.18
2Q= Length of area OABC =
128.36 degree (2Q /360)*3.14 *D 3.85 m
area of OABC
1/2 *L*d/2
=
m2
2 3.31 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.16 m
Area of ABC
=
OABC - OAC 2 2.15 m
Volume of ABC
=
Area * Length 3 19.15 m
Volume of circle
=
PI*((D^2)/4) * L 3 82.68 m
% filling (q)
=
Volume of ABC / Volume of circle*100 23.16 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
82.33 MT
L
O Q
h
C
B
0.58
0.68
L
O Q
h
C
B
0.58
0.89
0.73
L
O Q
h
C
B
0.58
0.89
84.71 4.5 89.21
0.72
L
O Q
h
B
0.58
0.89
0.78
L
O Q
h
C
B
0.58
0.89
84.71 4.5 89.21
0.75
L
O Q
h
C
B
0.58
0.89
84.71 4.5 89.21
RAW MILL-1 GRINDING MEDIA CALCULATION FIRST CHAMBER Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
4.00 m 5.03 m
0.60 m C 0.30 72.58 145.16 degree (2Q /360)*3.14 *D 5.06 m 2 1/2 *L*d/2 m 2 5.064 m 2*1/2*b*h
h
A
bh (((d/2)^2 - h^2)^.5)*h 2 1.14 m
Area of ABC
=
OABC - OAC 2 3.92 m
Volume of ABC
=
Area * Length 3 19.70 m
Volume of circle
=
PI*((D^2)/4) * L 3 63.11 m
% filling (q)
=
Volume of ABC / Volume of circle*100 31.21 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 84.69465
84.69 MT
42.3 4.25
20.51851
L
O Q
h
C
B
0.15
4
RAW MILL GRINDING MEDIA CALCULATION SECOND CHAMBER Diameter of the 2ed chamber length of the chamber
4.12 m 1.95 m
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.74 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.36 68.98
2Q= Length of area OABC =
137.96 degree (2Q /360)*3.14 *D 4.96 m
area of OABC
1/2 *L*d/2
=
m2
2 5.11 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.42 m
Area of ABC
=
OABC - OAC 2 3.68 m
Volume of ABC
=
Area * Length 3 7.18 m
Volume of circle
=
PI*((D^2)/4) * L 3 25.98 m
% filling (q)
=
Volume of ABC / Volume of circle*100 27.65 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
30.89 MT
RAW MILL GRINDING MEDIA CALCULATION SECOND CHAMBER Date Diameter of the 2ed chamber 4.12 m length of the chamber 1.95 m
30.12.08
0.94
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.66 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.32 71.35
2Q= Length of area OABC =
142.70 degree (2Q /360)*3.14 *D 5.13 m
area of OABC
1/2 *L*d/2
=
m2
2 5.28 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 1.29 m
Area of ABC
=
OABC - OAC 2 3.99 m
Volume of ABC
=
Area * Length 3 7.79 m
Volume of circle
=
PI*((D^2)/4) * L 3 25.98 m
% filling (q)
=
Volume of ABC / Volume of circle*100
29.97 % Qty of Grinding Media = in first chamber
q*.01*density*volume
33.49 MT
L
O Q
h
C
B
L
O Q
h
C
B
RAW MILL-1 GRINDING MEDIA CALCULATION FIRST CHAMBER Diameter of the 1st chamber length of the chamber In the figure, OC = Radius h = Empty Height L = Length of the chamber cos Q = h / oc = cos Q = h / oc = Q = 2Q= Length of area OABC = area of area OABC
=
Area of OAC
=
4.00 m 5.03 m
1.43 m C 0.72 44.38 88.76 degree (2Q /360)*3.14 *D 3.10 m 2 1/2 *L*d/2 m 2 3.097 m 2*1/2*b*h
h
A
bh (((d/2)^2 - h^2)^.5)*h 2 2.00 m
Area of ABC
=
OABC - OAC 2 1.10 m
Volume of ABC
=
Area * Length 3 5.51 m
Volume of circle
=
PI*((D^2)/4) * L 3 63.11 m
% filling (q)
=
Volume of ABC / Volume of circle*100 8.74 %
Qty of Grinding Media = in first chamber
q*.01*density*volume 23.7076
23.71 MT
42.3 4.25
20.51851
L
O Q
h
C
B
0.3575
4
CEMENT MILL GRINDING MEDIA CALCULATION SECOND CHAMBER Diameter of the 2ed chamber length of the chamber
2.52 m 2.80 m
In the figure, OC = Radius h = Empty Height L = Length of the chamber
0.74 m
h A
cos Q = h / oc = cos Q = h / oc = cos Q =
0.59 54.06
2Q= Length of area OABC =
108.12 degree (2Q /360)*3.14 *D 2.38 m
area of OABC
1/2 *L*d/2
=
m2
2 1.50 m
Area of OAC
=
2*1/2*b*h bh (((d/2)^2 - h^2)^.5)*h 2 0.75 m
Area of ABC
=
OABC - OAC 2 0.74 m
Volume of ABC
=
Area * Length 3 2.08 m
Volume of circle
=
PI*((D^2)/4) * L 3 13.96 m
% filling (q)
=
Volume of ABC / Volume of circle*100 14.90 %
Qty of Grinding Media = in first chamber
q*.01*density*volume
8.94 MT
L
O Q
h
C
B
Feed
130 TPH
Static Presssure -162 -162 -163 -162 -165 -163 -162 -163 -162 -163 Average
-162.7
DP 8 7 7 8 9 8 8 9 7 8
2.828 2.646 2.646 2.828 3.000 2.828 2.828 3.000 2.646 2.828
7.900 2.808 7.885
Duct Dia Gas Temp.
1 meter 102 Deg C
Density 0.8924 Velocity
C *(Sqrt((2*g*DP/Density)))
C
2*9.81*7.885/.8924 Pitot tube Constant 13.162
*DP/Density)))
Size Weight Surface Area Specific Surface Specific Surface No of Ball Qty in mm in grams cm2 cm2/gm m2/mt mt 85 2507 227 0.0904977 9.0498 7180 18.00 75 1722 177 0.1025641 10.2564 12775 22.00 65 1121 133 0.1183432 11.8343 38358 43.00 55 679 95 0.1398601 13.9860 8835 6.00 67148
89.00
Size Weight Surface Area Specific Surface Specific Surface No of Ball Qty in mm in grams cm2 cm2/gm m2/mt 90 2975.778 254.34 0.0855 8.5470 7342.617628 21.85 80 2089.984 200.96 0.0962 9.6154 14545.5659 30.40 70 1400.126 153.86 0.1099 10.9890 14248.71762 19.95 60 881.712 113.04 0.1282 12.8205 25858.78382 22.80 61995.68496
95
Piece wt in gm
1325
Piece wt in gm
1532.365
Surface Area Specific Surface m2 m2/mt 163 226 509 84 981
11.03
Surface Area Specific Surface m2 m2/mt 186.75 292.31 219.23 292.31 990.60
10.43
