Ball Mill (Perfect Mixing)
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Description
This article describes an implementation of the Perfect Mixing ball mill model outlined by Napier-Munn et al. (1996).[1]
The model described here is for steady-state simulation. For dynamic simulation, see Ball Mill (Perfect Mixing, Dynamic).
Model theory
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Discharge rate
Breakage rate
Appearance function
Internal mesh series
Multi-component modelling
Power draw
Excel
The Perfect Mixing ball mill model may be invoked from the Excel formula bar with the following function call:
=mdUnit_BallMill_PerfectMixing(Parameters as Range, Size as Range, MillFeed as Range, OreSG As Range, Appearance as Range, WorkIndexSim As Range, R/D*KnotPositions as Range, R/D*KnotsOrig as Range)
Invoking the function with no arguments will print Help text associated with the model, including a link to this page.
Inputs
The required inputs are defined below in matrix notation with elements corresponding to cells in Excel row ([math]\displaystyle{ i }[/math]) x column ([math]\displaystyle{ j }[/math]) format:
- [math]\displaystyle{ Parameters= \begin{bmatrix} D_{\rm Orig}\text{ (m)}\\ {\rm LF}_{\rm Orig}\text{ (v/v)}\\ (C_{\rm s})_{\rm Orig}\text{ (frac)}\\ {\rm WI}_{\rm Orig}\text{ (kWh/t)}\\ Db_{\rm Orig}\text{ (mm)}\\ D_{\rm Sim}\text{ (m)}\\ {\rm LF}_{\rm Sim}\text{ (v/v)}\\ (C_{\rm s})_{\rm Sim}\text{ (frac)}\\ {\rm WI}_{\rm Orig}\text{ (kWh/t)}\\ Db_{\rm Sim}\text{ (mm)}\\ K\\ L\text{ (m)}\\ \alpha_{c}\text{ (deg.)}\\ D_{\rm t}\text{ (m)}\\ J_{\rm B}\text{ (v/v)}\\ U\text{ (v/v)}\\ \rho_{\rm B}\text{ (t/m}^{\text{3}}\text{)}\\ (Q_{\rm M,F})_{\rm L}\text{ (t/h)}\\ \rho_{\rm L}\text{ (t/m}^{\text{3}}\text{)}\\ \end{bmatrix},\;\;\;\;\;\; Size = \begin{bmatrix} d_{1}\text{ (mm)}\\ \vdots\\ d_n\text{ (mm)}\\ \end{bmatrix},\;\;\;\;\;\; MillFeed= \begin{bmatrix} (Q_{\rm M,F})_{11}\text{ (t/h)} & \dots & (Q_{\rm M,F})_{1m}\text{ (t/h)}\\ \vdots & \ddots & \vdots\\ (Q_{\rm M,F})_{n1}\text{ (t/h)} & \dots & (Q_{\rm M,F})_{nm}\text{ (t/h)}\\ \end{bmatrix},\;\;\;\;\;\; OreSG= \begin{bmatrix} (\rho_{\rm S})_{1}\text{ (t/m}^\text{3}\text{)} & \dots & (\rho_{\rm S})_m\text{ (t/m}^\text{3}\text{)}\\ \end{bmatrix} }[/math]
- [math]\displaystyle{ Appearance= \begin{bmatrix} \begin{bmatrix} A_{1}\text{ (frac)}\\ \vdots\\ A_{31}\text{ (frac)}\\ \end{bmatrix}_1 \dots \begin{bmatrix} A_{1}\text{ (frac)}\\ \vdots\\ A_{31}\text{ (frac)}\\ \end{bmatrix}_m \end{bmatrix},\;\;\;\;\;\; {\rm WI}_{\rm Sim}= \begin{bmatrix} {\rm WI}_{1}\text{ (kWh/t)} & \dots & {\rm WI}_m\text{ (kWh/t)}\\ \end{bmatrix},\;\;\;\;\;\; R/D^*KnotPositions= \begin{bmatrix} d_{1}\text{ (mm)}\\ \vdots\\ d_{k}\text{ (mm)}\\ \end{bmatrix},\;\;\;\;\;\; R/D^*KnotOrig= \begin{bmatrix} \ln\left(\frac{R}{D^*}\right)_1\\ \vdots\\ \ln\left(\frac{R}{D^*}\right)_k\\ \end{bmatrix} }[/math]
where:
- [math]\displaystyle{ \alpha_{c} }[/math] is angle between the cone end surface and the vertical direction (degrees)
- [math]\displaystyle{ D_{\rm t} }[/math] is the diameter of the discharge trunnion (m)
- [math]\displaystyle{ J_{\rm B} }[/math] is the ball charge volume fraction (typically [math]\displaystyle{ J_{\rm B} = {\rm LF} }[/math] for ball mills) (v/v)
- [math]\displaystyle{ U }[/math] is the void fill fraction, the volumetric fraction of grinding media interstitial void space occupied by slurry (v/v)
- [math]\displaystyle{ \rho_{\rm B} }[/math] is the Specific Gravity or density of the ball media (excluding void space) (- or t/m3)
- [math]\displaystyle{ (Q_{\rm M,F})_{\rm L} }[/math] is the mass flow feed rate of liquids into the mill (t/h)
- [math]\displaystyle{ \rho_{\rm L} }[/math] is the Specific Gravity or density of liquids in the feed (- or t/m3)
- [math]\displaystyle{ n }[/math] is the number of size intervals
- [math]\displaystyle{ m }[/math] is the number of ore types
- [math]\displaystyle{ k }[/math] is the number of breakage rate per discharge rate knots
- [math]\displaystyle{ d_i }[/math] is the size of the square mesh interval that feed mass is retained on (mm)
- [math]\displaystyle{ d_{i+1}\lt d_i\lt d_{i-1} }[/math], i.e. descending size order from top size ([math]\displaystyle{ d_{1} }[/math]) to sub mesh ([math]\displaystyle{ d_{n}=0 }[/math] mm)
- [math]\displaystyle{ Q_{\rm M,F} }[/math] is the mass flow rate of particles in the feed (t/h)
- [math]\displaystyle{ \rho_{\rm S} }[/math] is the Specific Gravity or density of solids (- or t/m3)
- [math]\displaystyle{ A_i }[/math] is the Appearance function value, the fraction of parent particle mass appearing in internal size interval [math]\displaystyle{ i }[/math] (frac)
- [math]\displaystyle{ \frac{R_i}{D_i^*} }[/math] is breakage rate per discharge rate normalised for residence time (h-1/h-1/h)
Results
The results are displayed in Excel as an array corresponding to the matrix notation below:
- [math]\displaystyle{ mdUnit\_BallMill\_PerfectMixing = \begin{bmatrix} \begin{bmatrix} Q_{\rm V,F}\text{ (m}^{\text{3}}\text{/h)}\\ V\text{ (m}^{\text{3}}\text{)}\\ \text{N (rpm)}\\ \rho_{\rm c}\text{ (t/m}^{\text{3}}\text{)}\\ \text{No-load power (kW)}\\ \text{Gross power (grate) (kW)}\\ \text{Gross power (overflow) (kW)}\\ \text{R/D* factor (-)}\\ f_{\rm D}\text{ (-)}\\ f_{\rm LF}\text{ (-)}\\ f_{\rm CS}\text{ (-)}\\ x_{\rm m(small)}\text{ (mm)}\\ x_{\rm m(large)}\text{ (mm)}\\ \end{bmatrix} & \begin{array}{ccc} \begin{bmatrix} d_1\text{ (mm)}\\ \vdots\\ d_n\text{ (mm)} \end{bmatrix} & \begin{bmatrix} (Q_{\rm M,P})_{11}\text{ (t/h)} & \dots & (Q_{\rm M,P})_{1m}\text{ (t/h)}\\ \vdots & \ddots & \vdots\\ (Q_{\rm M,P})_{n1}\text{ (t/h)} & \dots & (Q_{\rm M,P})_{nm}\text{ (t/h)}\\ \end{bmatrix} & \begin{bmatrix} \bar{d}_1\text{ (mm)}\\ \vdots\\ \bar{d}_{31}\text{ (mm)}\\ \end{bmatrix} & \begin{bmatrix} \frac{R_i}{D_i^*}_{11}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}/\text{h}\right) & \dots & \frac{R_i}{D_i^*}_{1m}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}/\text{h}\right)\\ \vdots & \ddots & \vdots \\ \frac{R_i}{D_i^*}_{31,1}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}/\text{h}\right) & \dots & \frac{R_i}{D_i^*}_{31m}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}/\text{h}\right)\\ \end{bmatrix} & \begin{bmatrix} \frac{R_i}{D_i}_{11}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right) & \dots & \frac{R_i}{D_i}_{1m}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right)\\ \vdots & \ddots & \vdots \\ \frac{R_i}{D_i}_{31,1}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right) & \dots & \frac{R_i}{D_i}_{31m}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right)\\ \end{bmatrix} & \begin{bmatrix} \ln \left( \frac{R_i}{D_i} \right)_{11} & \dots & \ln \left( \frac{R_i}{D_i} \right)_{1m}\\ \vdots & \ddots & \vdots \\ \ln \left( \frac{R_i}{D_i} \right)_{k1} & \dots & \ln \left( \frac{R_i}{D_i} \right)_{km}\\ \end{bmatrix}\\ \\ & & & & & \begin{bmatrix} \left( \frac{R_i}{D_i} \right)_{11}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right) & \dots & \left( \frac{R_i}{D_i} \right)_{1m}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right)\\ \vdots & \ddots & \vdots \\ \left( \frac{R_i}{D_i} \right)_{k1}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right) & \dots & \left( \frac{R_i}{D_i} \right)_{km}\left(\frac{\text{h}^\text{-1}}{\text{h}^\text{-1}}\right)\\ \end{bmatrix}\\ \\ & & & & & \begin{bmatrix} (f_{\rm WI})_1 & \dots & (f_{\rm WI})_m \end{bmatrix}\\ & & & & & &\\ & & & & & &\\ \end{array} \end{bmatrix} }[/math]
where:
- [math]\displaystyle{ Q_{\rm V,F} }[/math] is the flow rate of pulp into the mill (m3/h)
- [math]\displaystyle{ V }[/math] is the total volume inside the mill, calculated as the sum of a cylinder and two frustums (m3)
- [math]\displaystyle{ N }[/math] is the rotational rate of the mill (rpm)
- [math]\displaystyle{ \rho_{\rm c} }[/math] is the combined density of the charge, including grinding media, coarse ore, slurry and void space (t/m3)
- [math]\displaystyle{ \text{No-load power} }[/math] is the power input to the motor when the mill is rotating but empty (no balls, rocks or slurry) (kW)
- [math]\displaystyle{ \text{Gross power (grate)} }[/math] is the total power input to the motor if the mill is configured with a grate discharge (kW)
- [math]\displaystyle{ \text{Gross power (overflow)} }[/math] is the total power input to the motor if the mill is configured with an overflow discharge (kW)
- [math]\displaystyle{ \text{R/D* factor}=D_i^*/D_i }[/math] is the discharge rate scaling factor
- [math]\displaystyle{ Q_{\rm M,P} }[/math] is the mass flow rate of particles in the mill product (t/h)
- [math]\displaystyle{ \bar{d}_i }[/math] is the geometric mean size of the internal mesh series interval that mass is retained on (mm)
Example
The images below show the selection of input arrays and output results in the Excel interface.
 Figure 3. Example showing the selection of the Parameters (blue frame) array in Excel.  Figure 4. Example showing the outline of the Results (light blue frame) array in Excel. |
 Figure 5. Example showing the selection of the Size (red frame), OreSG (green frame) and MillFeed (purple frame). |
 Figure 6. Example showing the selection of the Appearance (pink frame), R/D*KnotPositions (teal frame), R/D*KnotsOrig (blue frame), WorkIndexSim (red frame) arrays in Excel. |
SysCAD
The sections and variable names used in the SysCAD interface are described in detail in the following tables.
MD_Mill page
The first tab page in the access window will have this name.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| Tag | Display | This name tag may be modified with the change tag option. |
| Condition | Display | OK if no errors/warnings, otherwise lists errors/warnings. |
| ConditionCount | Display | The current number of errors/warnings. If condition is OK, returns 0. |
| GeneralDescription / GenDesc | Display | This is an automatically generated description for the unit. If the user has entered text in the 'EqpDesc' field on the Info tab (see below), this will be displayed here.
If this field is blank, then SysCAD will display the unit class ID. |
| Requirements | ||
| On | CheckBox | This enables the unit. If this box is not checked, then the material will pass straight through the mill with no change to the size distribution. |
| NumParallelUnits | Input | The number of parallel, identical units to simulate:
|
| Method | Fixed Discharge | The discharge particle size distribution is user defined. Different distributions can be used for different solids. |
| AG/SAG (Variable Rates) | The Variable Rates AG/SAG mill model (steady-state or dynamic) is used to determine the mill product size distribution. Different parameters can be used for different solids. | |
| Rod Mill (Lynch) | The Lynch rod mill model is used to determine the mill product size distribution. Different parameters can be used for different solids. | |
| Ball (Perfect Mixing) | The Perfect Mixing ball mill model (steady-state or dynamic) is used to determine the mill product size distribution. Different parameters can be used for different solids. | |
| Stirred (Perfect Mixing) | The Perfect Mixing stirred mill model (steady-state or dynamic) is used to determine the mill product size distribution. Different parameters can be used for different solids. | |
| Mill (Herbst-Fuerstenau) | The Herbst-Fuerstenau model is used to determine the mill product size distribution. Different parameters can be used for different solids. | |
| PowerModels | CheckBox | Show alternative mill power model calculations on the Power page. |
| MediaTrajectory | CheckBox | Show mill media rolling, sliding and free flight trajectory computations on the MediaTraj page. |
| OverfillingIndicator | CheckBox | Show overflow ball mill slurry volume, residence time, and overfilling evaluation on Overfilling page. |
| MediaStrings | CheckBox | Show media size distributions at recharge equilibrium on the MediaStrings page. |
| Options | ||
| ShowQFeed | CheckBox | QFeed and associated tab pages (eg Sp) will become visible, showing the properties of the combined feed stream. |
| ShowQProd | CheckBox | QProd and associated tab pages (eg Sp) will become visible, showing the properties of the products. |
| SizeForPassingFracCalc | Input | Size fraction for % Passing calculation. The size fraction input here will be shown in the Stream Summary section. |
| FracForPassingSizeCalc | Input | Fraction passing for Size calculation. The fraction input here will be shown in the Stream Summary section. |
| Stream Summary | ||
| MassFlow / Qm | Display | The total mass flow in each stream. |
| SolidMassFlow / SQm | Display | The Solids mass flow in each stream. |
| LiquidMassFlow / LQm | Display | The Liquid mass flow in each stream. |
| VolFlow / Qv | Display | The total Volume flow in each stream. |
| Temperature / T | Display | The Temperature of each stream. |
| Density / Rho | Display | The Density of each stream. |
| SolidFrac / Sf | Display | The Solid Fraction in each stream. |
| LiquidFrac / Lf | Display | The Liquid Fraction in each stream. |
| Passing | Display | The mass fraction passing the user-specified size (in the field SizeForPassingFracCalc) in each stream. |
| Passes | Display | The user-specified (in the field FracForPassesSizeCalc) fraction of material in each stream will pass this size fraction. |
Mill page
The Mill page is used to specify the input parameters for the mill model.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| PerfectMixing | ||
| HelpLink | 
|
Opens a link to this page using the system default web browser. Note: Internet access is required. |
| Ball | ||
| MediaStringsP50 | CheckBox |
|
| Diameter | Input | The inside liner diameter of the original and simulated ball mills. |
| BellyLength | Input | The inside liner belly length of the simulated ball mill, excluding cones. |
| ConeAngle | Input | Angle of the feed and discharge end cones, measured as positive displacement from the vertical direction. |
| TrunnionDiameter | Input | The inside liner trunnion diameter of the simulated ball mill. |
| LoadFrac | Input | The volumetric load fraction of the original and simulated ball mills. |
| FracCS | Input | The fraction critical speed of the original and simulated ball mills. |
| WorkIndex | Input | Bond Ball Work Index of ore in the original mill. |
| BallSize | Input | Characteristic diameter of balls in original and simulated ball mills. |
| MaxBreakageRateFactor / K | Input | Parameter relating ball size and the size at which the breakage rate per discharge rate is maximum. |
| R/DFunction | ||
| NumSplineKnots | Input | Number of spline knots for the [math]\displaystyle{ R_i/D_i^* }[/math] function. |
| Size | Input | Spline knot size positions. |
| Ln(R/D*) | Input | Values of [math]\displaystyle{ \ln R/D^* }[/math] at each spline knot position. |
| Power | ||
| BallVolume | Input | Volumetric fraction of mill occupied by balls and voids. |
| VoidFillFraction | Input | Volumetric fraction of void space between balls occupied by slurry. |
| BallSG | Input | Specific Gravity or density of ball media. |
| Results | ||
| MillVolume | Display | Volume inside mill, including cones. |
| MillSpeed | Display | Rotational speed of simulated mill. |
| ChargeDensity | Display | Density of charge in simulated mill, including balls, solids and liquids. |
| NoLoadPower | Display | Power draw of empty mill (no balls, solids or liquids) |
| GrossPower.Grate | Display | Gross power draw of mill in grate configuration |
| GrossPower.Overflow | Display | Gross power draw of mill in overflow configuration |
Ore page
This page is used to define the comminution properties of SysCAD species with the size distribution quality in the project.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| Appearance | ||
| DefaultAppearance |
|
Sets all species to the default Broadbent-Callcott Appearance function. |
| OreSpecific | CheckBox |
|
| Appearance | Input | User-specified Appearance function data for all species with size distribution property. |
|
| ||
| WorkIndex | ||
| WorkIndex.Sim | Input | Bond Ball Work Index data for all species with size distribution property. |
Ri/Di page
This page displays the scaling factors and breakage rate per discharge rate for each size interval computed by the Perfect Mixing model.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| Scaling | ||
| RDStar/RD | Display | Value of the [math]\displaystyle{ \frac{R}{D^*} \bigg/ \frac{R}{D} }[/math] factor for discharge rate scaling. |
| Diameter | Display | Value of the mill diameter factor for rate scaling. |
| LoadFraction | Display | Value of the load fraction factor for rate scaling. |
| FracCS | Display | Value of the fraction critical speed factor for rate scaling. |
| WorkIndex | Display | Value of the Work Index factor of each ore species for rate scaling. |
| Ri/DiStar | ||
| Size | Display | Size of each interval in internal mesh series. |
| MeanSize | Display | Geometric mean size of each interval in internal mesh series. |
| Ri/DiStar | Display | Value of normalised [math]\displaystyle{ R_i/D_i^* }[/math] rate for each size interval, for each ore species. |
| Ri/Di | ||
| Size | Display | Size of each interval in internal mesh series. |
| MeanSize | Display | Geometric mean size of each interval in internal mesh series. |
| Ri/Di | Display | Value of [math]\displaystyle{ R_i/D_i }[/math] rate for each size interval, for each ore species. |
Power page
This optional page displays the inputs and results for alternative mill power models. The page is only visible if PowerModels is selected on the MD_Mill page.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| Power | ||
| HoggFuerstenau | CheckBox | Shows inputs and results for tumbling mill power calculations using the Hogg and Fuerstenau method. |
| MorrellC | CheckBox | Shows inputs and results for tumbling mill power calculations using the Morrell Continuum method. |
| MorrellE | CheckBox | Shows inputs and results for tumbling mill power calculations using the Morrell Empirical method. |
| MorrellD | CheckBox | Shows inputs and results for tumbling mill power calculations using the Morrell Discrete Shell method. |
| HildenPowell | CheckBox | Shows inputs and results for tumbling mill power calculations using the Hilden and Powell method. |
MediaStrings page
This page displays the inputs and results for grinding mill media string calculations. The page is only visible if MediaStrings is selected on the MD_Mill page.
MediaTraj page
This page displays the inputs and results for tumbling mill media trajectory calculations. The page is only visible if MediaTrajectory is selected on the MD_Mill page.
Overfilling page
This page displays the inputs and results for overflow discharge mill overfilling calculations. The page is only visible if OverfillingIndicator is selected on the MD_Mill page.
CSz page
The CSz page provides composition and constituent information by particle size for QFeed and QProd. It appears after the standard SysCAD stream information when the corresponding stream display option is selected.
- Results are available for Species, Component, Element, and Individual Phase, with views for Composition, Distribution by Size, and Stream Contribution.
- The calculations are described in Stream Analyser - Composition by Size.
- These combined composition-by-size results are not available in the standard SysCAD stream pages. They are particularly useful for comparing simulated results with measured size-by-size data, such as elemental assays or mineral grades by size.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| Distribution | ||
| Name | Display | Shows the name of the SysCAD Size Distribution (PSD) quality associated with the feed stream. |
| IntervalCount | Display | Shows the number of size intervals in the SysCAD Size Distribution (PSD) quality associated with the feed stream. |
| SpWithPSDCount | Display | Shows the number of species in the feed stream assigned with the SysCAD Size Distribution (PSD) quality. |
| CSz | ||
| Property | Composition | Displays the mass fraction of each species, component, element, or individual phase within each size interval. The All row displays the overall composition over all size intervals. |
| Distribution by Size | Displays the fraction of each constituent's total mass that occurs in each size interval. The All column displays the distribution by size of all solids with a particle size distribution property in the selected stream. | |
| Stream Contribution | Displays each constituent and size interval mass as a fraction of the total mass of all solids with a particle size distribution property in the selected stream. | |
| Comp | ||
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Total composition of all solids with a particle size distribution property in each size interval. The result is 100% when the interval contains solids with a particle size distribution property and 0 when it does not. |
| Comp | Display | Mass fraction of each solid species with a particle size distribution property within each size interval. |
| All (All row, All column) | Display | Total composition of all solids with a particle size distribution property over all size intervals. The result is 100% when the selected stream contains solids with a particle size distribution property and 0 when it does not. |
| All (All row, per species) | Display | Overall mass fraction of each solid species with a particle size distribution property in the selected stream for all size intervals. |
| CmpComp | ||
| Components |   |
Hides or shows the component composition table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Total composition of all solids with a particle size distribution property in each size interval. The result is 100% when the interval contains solids with a particle size distribution property and 0 when it does not. |
| CmpComp | Display | Mass fraction of each displayed solid component within each size interval. |
| All (All row, All column) | Display | Total composition of all solids with a particle size distribution property over all size intervals. |
| All (All row, per component) | Display | Overall mass fraction of each displayed solid component in the selected stream over all size intervals. |
| EleComp | ||
| Elements |   |
Hides or shows the element composition table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Total composition of all solids with a particle size distribution property in each size interval. The result is 100% when the interval contains solids with a particle size distribution property and 0 when it does not. |
| EleComp | Display | Mass fraction of each displayed element within each size interval. |
| All (All row, All column) | Display | Total composition of all solids with a particle size distribution property over all size intervals. |
| All (All row, per element) | Display | Overall mass fraction of each displayed element in the selected stream over all size intervals. |
| IPhComp | ||
| IPhases |   |
Hides or shows the individual phase composition table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Total composition of all solids with a particle size distribution property in each size interval. The result is 100% when the interval contains solids with a particle size distribution property and 0 when it does not. |
| IPhComp | Display | Mass fraction of each displayed individual phase within each size interval. |
| All (All row, All column) | Display | Total composition of all solids with a particle size distribution property over all size intervals. |
| All (All row, per individual phase) | Display | Overall mass fraction of each displayed individual phase in the selected stream over all size intervals. |
| Dist | ||
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| Dist | Display | Fraction of the total mass of each solid species with a particle size distribution property that occurs in each size interval. |
| All (All row, All column) | Display | Total distribution by size of all solids with a particle size distribution property. The result is 100% when the selected stream contains solids with a particle size distribution property and 0 when it does not. |
| All (All row, per species) | Display | Total distribution by size of each solid species with a particle size distribution property. The result is 100% when that species is present and 0 when it is not. |
| CmpDist | ||
| Components | |
Hides or shows the component distribution-by-size table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| CmpDist | Display | Fraction of each displayed solid component's total mass that occurs in each size interval. |
| All (All row, All column) | Display | Total distribution by size of all solids with a particle size distribution property. |
| All (All row, per component) | Display | Total distribution by size of each displayed solid component. The result is 100% when that component is present and 0 when it is not. |
| EleDist | ||
| Elements | |
Hides or shows the element distribution-by-size table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| EleDist | Display | Fraction of each displayed element's total mass that occurs in each size interval. |
| All (All row, All column) | Display | Total distribution by size of all solids with a particle size distribution property. |
| All (All row, per element) | Display | Total distribution by size of each displayed element. The result is 100% when that element is present and 0 when it is not. |
| IPhDist | ||
| IPhases | |
Hides or shows the individual phase distribution-by-size table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| IPhDist | Display | Fraction of each displayed individual phase's total mass that occurs in each size interval. |
| All (All row, All column) | Display | Total distribution by size of all solids with a particle size distribution property. |
| All (All row, per individual phase) | Display | Total distribution by size of each displayed individual phase. The result is 100% when that individual phase is present and 0 when it is not. |
| Contr | ||
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| Contr | Display | Stream Contribution of each solid species with a particle size distribution property and size interval to the total mass of all solids with a particle size distribution property in the selected stream. |
| All (All row, All column) | Display | Total stream contribution of all solids with a particle size distribution property. The result is 100% when the selected stream contains solids with a particle size distribution property and 0 when it does not. |
| All (All row, per species) | Display | Overall stream contribution of each solid species with a particle size distribution property for all size intervals. |
| CmpContr | ||
| Components | |
Hides or shows the component stream contribution table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| CmpContr | Display | Stream Contribution of each displayed solid component and size interval to the total mass of all solids with a particle size distribution property in the selected stream. |
| All (All row, All column) | Display | Total stream contribution of all solids with a particle size distribution property. |
| All (All row, per component) | Display | Overall stream contribution of each displayed solid component for all size intervals. |
| EleContr | ||
| Elements | |
Hides or shows the element stream contribution table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| EleContr | Display | Stream Contribution of each displayed element and size interval to the total mass of all solids with a particle size distribution property in the selected stream. |
| All (All row, All column) | Display | Total stream contribution of all solids with a particle size distribution property. |
| All (All row, per element) | Display | Overall stream contribution of each displayed element for all size intervals. |
| IPhContr | ||
| IPhases | |
Hides or shows the individual phase stream contribution table. |
| Size | Display | Size of each interval in the mesh series. |
| All (All column) | Display | Fraction of the total mass of all solids with a particle size distribution property in the selected stream that occurs in each size interval. |
| IPhContr | Display | Stream Contribution of each displayed individual phase and size interval to the total mass of all solids with a particle size distribution property in the selected stream. |
| All (All row, All column) | Display | Total stream contribution of all solids with a particle size distribution property. |
| All (All row, per individual phase) | Display | Overall stream contribution of each displayed individual phase for all size intervals. |
About page
This page is provides product and licensing information about the Met Dynamics Models SysCAD Add-On.
| Tag (Long/Short) | Input / Display | Description/Calculated Variables/Options |
|---|---|---|
| About | ||
| HelpLink | 
|
Opens a link to the Installation and Licensing page using the system default web browser. Note: Internet access is required. |
| Information | 
|
Copies Product and License information to the Windows clipboard. |
| Product | ||
| Name | Display | Met Dynamics software product name |
| Version | Display | Met Dynamics software product version number. |
| BuildDate | Display | Build date and time of the Met Dynamics Models SysCAD Add-On. |
| License | ||
| File | 
|
This is used to locate a Met Dynamics software license file. |
| Location | Display | Type of Met Dynamics software license or file name and path of license file. |
| SiteCode | Display | Unique machine identifier for license authorisation. |
| ReqdAuth | Display | Authorisation level required, MD-SysCAD Full or MD-SysCAD Runtime. |
| Status | Display | License status, LICENSE_OK indicates a valid license, other messages report licensing errors. |
| IssuedTo | Display | Only visible if Met Dynamics license file is used. Name of organisation/seat the license is authorised to. |
| ExpiryDate | Display | Only visible if Met Dynamics license file is used. License expiry date. |
| DaysLeft | Display | Only visible if Met Dynamics license file is used. Days left before the license expires. |
See also
External links
- Met Dynamics - Mill (help.syscad.net)
- Crushing and Grinding Example project (help.syscad.net)
- Crushing, Grinding and Flotation Example project (help.syscad.net)
References
- ↑ Napier-Munn, T.J., Morrell, S., Morrison, R.D. and Kojovic, T., 1996. Mineral comminution circuits: their operation and optimisation. Julius Kruttschnitt Mineral Research Centre, Indooroopilly, QLD.