Size Configuration

From SysCAD Documentation

Navigation: User Guide - General -> Project Configuration (cfg File) (SysCAD 9.2) or Models Configuration (.cfg File) (SysCAD 9.1) -> Size Configuration

This page is valid for SysCAD 9.1 and later builds.

Contents 1 Introduction 2 Sieve Series 2.1 Adding and Editing Sieve Series 2.2 Series Specification 3 Size Distribution 3.1 Defining Size Distributions 3.2 Defining Solids 4 Measurements 4.1 Distribution 4.2 Measurement List 4.3 Measurements 4.4 Measurement Details

Introduction

The tabs for configuring size data will only be visible if:

1. You have the Size Distribution add on; and
2. You have selected the size distribution dll or group in the Model selection (see Model Selection)

These tabs are described in detail in the following sections.

Sieve Series

Adding and Editing Sieve Series

1. Name: The default Name for the sieve Series is Tyler0. You may rename this by typing in a different name, in the example above, the series name is Std.
2. Add or Remove Sieve Series The project may have more than one sieve series - just add a new one with the Add button underneath the Sieve Series list box. You may also remove unwanted Sieve Series using the Remove button.
3. Units: You may change the default engineering units for the sieve series by using the Units list box.

Series Specification

Types:

• Manual - Allows user to manually enter size intervals. Adding and removing sizes from the series can modify the Sieve series. Double clicking on a value in the Size series can modify individual sizes.

• Q - Creates a series from min and encompassing max based where the ratio between series is based on the following formulae:

  Init + 1 = Init * Ratio;

  where Ratio = pow(2,1/3Q).

  If MidPt is selected then the start value is Min/(1+0.5(Ratio-1)) else the start value is Min.

• Sqrt(2) - Each interval is sqrt(2) times previous interval

• Ratio - Each interval is Ratio times previous interval

• Arithmetic - Linear intervals separated by 'A'

To Manual Button - transfers series data to Manual and changes type to Manual

N Or Number of Points - Displays number of Intervals

Decimals - For non manual types you can specify 0,1,or 2 decimal places.

Size Distribution

This functionality is only available if you have the Size Distribution add on.

Defining Size Distributions

1. Name You may define any number of size distribution series for the projects by clicking on the Add button below Name. You may then double click on the name and type in the desired name.
2. Sieve Series Once you have given the size distribution a name select the Sieve Series to be used. In the example above, a CoarseSize Distribution is being defined and it is using the Coarse Sieve Series (refer to previous heading).
3. Units This value is displayed only, you may not change it here. It was defined when the Sieve Series was set up previously.
4. Top Size This value is displayed only, you may not change it here. It was defined when the Sieve Series was set up previously.
5. Bottom Size You may define the bottom size for the size distribution. This bottom size will be used in some model calculations such as the screen and the Change Sieve Series models.
6. Display The displayed Top and Bottom Sizes for the Access Window can be defined here.

Defining Solids

• For this to function, at least one solid component must be defined in the species database and selected for the project.
• All solid components are displayed in the Species List.
• You must select at least one of these solid species to contain size data.
• Species are selected or deselected by double clicking.
• The size distribution of the default species, shown in the Default field at the bottom of the window, is the one that SysCAD will use to allocate to unspecified solids. (see example below)
• In the example above, solid components Ore1, Ore2, and Ore3 are selected to have size distribution data and Ore1 will have the default size distribution.

Example

Using the data shown in the above window:

Total solids flow = 100t/h

Ore1 = 5t/h

Ore2 = 10t/h

Ore3 = 25t/h

Remaining solids = 60t/h. This consists of all the other solids in the project that have NOT been assigned with size distributions, i.e. Al2O3(s), Al2O3(s).2H2O(s), Inerts(s), etc.

SysCAD must allocate a size distribution to the 60t/h of solids that have not been explicitly defined in the configuration file. In this case, SysCAD will use the size distribution allocated to Ore1.

So, if Ore1 has a d₅₀ = 10mm, then the remaining solids will also have a d₅₀ = 10mm.

Measurements

This page allows the user to specify which measurements they wish to be calculated for each stream species that has a size distribution associated with it. These measurements appear on the MSz tab page when viewing the Access pages.

Distribution

This will have a list of the distributions that have been defined in the project. Select the Distribution for which you wish to define measurements.

Measurement List

Add Add a new measurement.

Remove Remove an existing measurement.

Measurements

The List of defined measurements. The order in which the measurements appear here is the order that the measurements are displayed in the MSz page.

Measurement Details

The user defines the measurements here.

Name: The user types in the required measurement name, for example:

• D80 = the screen size through which 80% of the particles will pass;
• P20 = the fraction of particles that will pass 20um.

Type: The following Types of calculations are allowed here:

Type	Description
SizePassFrac	Size at specified cumulative passing fraction
FracPassSize	Cumulative passing fraction at specified size
PPG	Total Particle Count per Mass
SAM	Surface Area per Gram
SAL	Surface Area per Litre
Text	This is a Text Label that will appear on the MSz page

Please see MSz for more information on the equations used to calculate SAM and SAL.

Value:

1. The size or fraction to calculate the fraction or size at (SizePassFrac and FracPassSize only).
2. The second list box allows you to specify units from a drop down list.

Result: The user can specify the units for the result display for SizePassFrac and FracPassSize from a drop down list.

Order: The Up and Down buttons can be used to move the display order of the selected measurement.

Count Factor This is a correction factor which may be used to account for particle geometry. This value is used when calculating:

SpN - Number of Particles per unit mass of solids; and

Qn - Number of Particles per unit time.

Please see Sz Data for more information on the equations that use this value.

Examples:

To Calculate	Name	Type	Value	(Value) engineering units	Result's engineering units
Particle size at 50% passing	D50	SizePassFrac	50	%	um
Cumulative fraction passing 20 µm	P20	FracPassSize	20	um	%

Notes:

1. If the size specified is between two size intervals, then interpolation is used to calculate the size or cumulative fraction passing of interest.
2. The PPG number will ignore the count factor.