comminution example 5301 crushing 11

8/10/2019 Comminution Example 5301 Crushing 11

1/10

COMMINUTION EXAMPLE 5301 CRUSHING

CS = 75mm

OS = 100mm

WI = 15

CO = 1-DESIGN

EM = 90

SZ = 38mm

OR = 1

CS = 25mm

OS = 30mm

WI = 15


2/10

COMPONENTS:

1. SiO2 Quartz (Solids)

2. H2O Water (Aqueous)

SCREEN SIZES:

TYLER SIEVES

17" to 0.375" (Default Sieves)

STREAM DATA:

Stream 1 110 MT/HR

100 MT/HR Solids

10 MT/HR Aqueous

Screen Size Analysis

Cummulative Fraction Passing

17 1.0

12" 0.9

1.05" 0.1

METSIM Particle Size Value Functions

VP80 S ;Mesh size in microns which passes 80% of the solids in stream S.

e.g. VP80 s5

F VMIC S ;Micron size of fraction F passing in stream S.

M VPAS S ;Weight of solids in stream S passing M microns.

M VPPM S ;Weight fraction of solids in stream S passing M microns.

M VCPR S ;Weight fraction of solids in stream S retained on micron size M.VPCP S ;Weight fraction of solids in stream S retained on each mesh size.

VPCR S ;Weight fraction of solids in stream S passing all mesh sizes.

M VSIZ S ;Weight fraction of solids in stream S passing M microns.

VCPS S ;Average coal particle size in millimeters or inches.


3/10

How To Enter Screen Size Analysis in METSIM for Windows.

Turn on the Particle Size Analysis Switch by clicking on the Model

Parameters Button, then the Calc Options tab and finally click the Particle

Size Analysis box.


4/10

From the Input Menu select SSNI

Screen Sieve Series for Data

Entryand the window on the right

will appear.

Input data is to be entered for the

range 17.0 IN to 1.05 IN so blank

out all the fields from 0.742 IN

down. Click the OK Button when

you are finished.


5/10

Now select the

Edit Object Data

Tool, and click onthe stream number.

After entering the

mass flowrates and

assays click on the

SSA Button. The

window on the rightwill appear.

Enter the %

Passing data which

is known and zero

out those which are

not.

% Passing Data

17.00 IN 1.0

12.00 IN 0.9

1.05 IN 0.1


6/10

Click OK to close the Window. METSIM has now preformed a Linear interpolation

between any points not entered in the Size Anaylsis Data.


7/10

Screen Size Analysis Array, SSA

METSIM stores screen size analysis data for a model in a single array, SSA. To

display the SSA matrix, enter SSA at the APL prompt. An example SSA array is as

follows:

37.04 117.28 89.5 67.9 49.38 40.12 27.79 23.46 20.99 17.28

0 0 16.43 54.3 47.95 39.97 27.76 23.45 20.99 17.28

37.04 117.28 73.07 13.6 1.43 0.16 0.01 0 0 0

0 0 29.79 51.51 43.42 32.96 24.59 17.62 11.95 7.59

0 0 46.23 105.8 91.37 72.93 52.36 41.07 32.94 24.87

Properties of SSA

The number of rows in SSA are the number of streams in the flowsheet. The number of

columns in SSA are the number of size fractions specified in the model. In thearray above, there are 5 streams and 10 size fractions specified.

If streams are added or deleted, the SSA array is also changed.

Each value in SSA is the weight of solids in each size fraction of each stream. The

units of weight are the same units selected in Model Parameters Option CALC

PARAMETERS. Therefore, both the following APL expressions will yield the same

result:

SI VSTR S

+/ SSA[S;]

where SI is variable for all solid inorganic components, and S

is a stream number.

As defined in METSIM, a size fraction is the smallest particle size that cannot go

through screen mesh of that size.


8/10

CRUSHING CIRCUIT

Simple Comminution Example

Project Information:

Owner :

Location :Title : CRUSHING CIRCUIT

Case : Simple Comminution Example

Purpose : Training Example

Data Storage File Name : 5301 Crushing.sfw

Mass Balance Option : ON

Particle Size Analysis Option: ON

Units of Mass : metric tonnesUnits of Time : hour

STREAM DATA

SOLIDS - MT/HR

NO. STREAM SiO2

---+-- +----------

1 1 100.000000

2 2 100.000000

3 3 77.382821

4 4 77.382821

5 5 100.000000

AQUEOUS - MT/HR

NO. STREAM H2O

---+-- +----------

1 1 10.0000000

2 2 10.00000003 3 7.7382821

4 4 7.7382821

5 5 10.0000000


9/10

SCREEN SIZE ANALYSIS

STREAM NO. 1 STREAM NO. 2 STREAM NO. 3

1 2 3

P80= 224784 P80= 84297 P80= 93264

---------------- -------------------- -------------------- --------------------

SCREENS MICRON MT/HR % RET % PAS MT/HR % RET % PAS MT/HR % RET % PAS

---------------- -------------------- -------------------- --------------------

12.0 IN 304800 10.000 10.000 90.00 0.000 0.000 100.00 0.000 0.000 100.00

8.48 IN 215392 11.402 11.402 78.60 0.000 0.000 100.00 0.000 0.000 100.006.00 IN 152400 11.361 11.361 67.24 1.582 1.582 98.42 1.582 2.045 97.96

4.24 IN 107696 11.402 11.402 55.84 7.456 7.456 90.96 7.456 9.635 88.32

3.00 IN 76200 11.361 11.361 44.48 15.480 15.480 75.48 15.480 20.005 68.31

2.12 IN 53848 11.402 11.402 33.07 18.255 18.255 57.23 18.255 23.591 44.72

1.50 IN 38100 11.361 11.361 21.71 16.657 16.657 40.57 23.614 30.516 14.21

1.05 IN 26670 11.713 11.713 10.00 15.573 15.573 25.00 9.486 12.259 1.95

.742 IN 18847 10.000 10.000 0.00 12.642 12.642 12.35 1.421 1.836 0.11

.525 IN 13335 0.000 0.000 0.00 2.261 2.261 10.09 0.081 0.105 0.01

.371 IN 9423 0.000 0.000 0.00 1.260 1.260 8.83 0.005 0.007 0.00

3 TY 6730 0.000 0.000 0.00 1.151 1.151 7.68 0.000 0.000 0.00

4 TY 4760 0.000 0.000 0.00 1.046 1.046 6.64 0.000 0.000 0.00

6 TY 3360 0.000 0.000 0.00 0.946 0.946 5.69 0.000 0.000 0.00

8 TY 2380 0.000 0.000 0.00 0.852 0.852 4.84 0.000 0.000 0.00

10 TY 1680 0.000 0.000 0.00 0.762 0.762 4.08 0.000 0.000 0.00

14 TY 1190 0.000 0.000 0.00 0.678 0.678 3.40 0.000 0.000 0.00

20 TY 841 0.000 0.000 0.00 0.598 0.598 2.80 0.000 0.000 0.00

28 TY 595 0.000 0.000 0.00 0.523 0.523 2.28 0.000 0.000 0.00

35 TY 420 0.000 0.000 0.00 0.454 0.454 1.82 0.000 0.000 0.00

48 TY 297 0.000 0.000 0.00 0.389 0.389 1.43 0.000 0.000 0.00

65 TY 210 0.000 0.000 0.00 0.329 0.329 1.10 0.000 0.000 0.00

100 TY 149 0.000 0.000 0.00 0.275 0.275 0.83 0.000 0.000 0.00150 TY 105 0.000 0.000 0.00 0.225 0.225 0.60 0.000 0.000 0.00

200 TY 74 0.000 0.000 0.00 0.180 0.180 0.42 0.000 0.000 0.00

270 TY 53 0.000 0.000 0.00 0.140 0.140 0.28 0.000 0.000 0.00

400 TY 37 0.000 0.000 0.00 0.105 0.105 0.18 0.000 0.000 0.00

600 TY 26 0.000 0.000 0.00 0.075 0.075 0.10 0.000 0.000 0.00

800 TY 19 0.000 0.000 0.00 0.051 0.051 0.05 0.000 0.000 0.00

1200 TY 13 0.000 0.000 0.00 0.031 0.031 0.02 0.000 0.000 0.00

1600 TY 9 0.000 0.000 0.00 0.016 0.016 0.01 0.000 0.000 0.00

2000 TY 7 0.000 0.000 0.00 0.007 0.007 0.00 0.000 0.000 0.00


10/10

SCREEN SIZE ANALYSIS

STREAM NO. 4 STREAM NO. 5

4 5

P80= 32218 P80= 28375

---------------- -------------------- --------------------

SCREENS MICRON MT/HR % RET % PAS MT/HR % RET % PAS

---------------- -------------------- --------------------1.50 IN 38100 6.958 8.991 91.01 0.000 0.000 100.00

1.05 IN 26670 18.118 23.414 67.59 24.206 24.206 75.79

.742 IN 18847 21.704 28.048 39.55 32.925 32.925 42.87

.525 IN 13335 12.389 16.010 23.54 14.569 14.569 28.30

.371 IN 9423 6.071 7.846 15.69 7.326 7.326 20.97

3 TY 6730 2.502 3.233 12.46 3.652 3.652 17.32

4 TY 4760 1.313 1.696 10.76 2.359 2.359 14.96

6 TY 3360 1.188 1.535 9.23 2.134 2.134 12.83

8 TY 2380 1.069 1.382 7.85 1.921 1.921 10.91

10 TY 1680 0.957 1.236 6.61 1.719 1.719 9.19

14 TY 1190 0.850 1.099 5.51 1.528 1.528 7.66

20 TY 841 0.751 0.970 4.54 1.349 1.349 6.31

28 TY 595 0.657 0.849 3.69 1.180 1.180 5.13

35 TY 420 0.569 0.736 2.96 1.023 1.023 4.11

48 TY 297 0.488 0.631 2.32 0.877 0.877 3.23

65 TY 210 0.413 0.534 1.79 0.743 0.743 2.49

100 TY 149 0.345 0.445 1.35 0.619 0.619 1.87

150 TY 105 0.282 0.365 0.98 0.507 0.507 1.36

200 TY 74 0.226 0.292 0.69 0.406 0.406 0.96

270 TY 53 0.176 0.227 0.46 0.316 0.316 0.64

400 TY 37 0.132 0.171 0.29 0.238 0.238 0.40

600 TY 26 0.095 0.122 0.17 0.170 0.170 0.23

800 TY 19 0.063 0.082 0.09 0.114 0.114 0.12

1200 TY 13 0.039 0.050 0.04 0.069 0.069 0.05

1600 TY 9 0.020 0.026 0.01 0.036 0.036 0.01

2000 TY 7 0.008 0.011 0.00 0.015 0.015 0.00

comminution example 5301 crushing 11

Documents