Template:SysCAD (Page, HPGR, Torres, HPGR)

HPGR page

The HPGR page is used to specify the input parameters for the HPGR model.

Tag (Long/Short)	Input / Display	Description/Calculated Variables/Options
HerbstFuerstenau
HelpLink		Opens a link to this page using the system default web browser. Note: Internet access is required.
Requirements
NumParallelUnits	Input	The number of parallel, identical units to simulate: Feed is divided by the number of parallel units before being sent to the unit model. Unit model product is multiplied back by the same value and returned to the SysCAD product stream. All unit model result values are shown per parallel unit.
Parameters
RollDiameter / D	Input	Diameter of the rolls.
RollDiameter / D	Input	Diameter of the rolls.
Gap / s0	Input	Gap between the rolls.
OperatingPressure / Rp	Input	Operating pressure of the rolls.
FeedBulkDensity / Rhoa	Input	Bulk density of solids in the feed.
CakeDensityFactor	Input	Cake density factor.
EdgeFraction / a	Input	Fraction of the product collected from the edge of the rolls length, appearing in the edge product stream.
ForceAngleFactor	Input	Factor applied to alphaIP when computing power draw.
NumBlocks / Nb	Input	Number of model blocks, i.e. instances of the Herbst-Fuerstenau mill model along the length of the rolls.
Selection
Method	User	The user specifies the selection function.
	Herbst and Fuerstenau	The Herbst and Fuerstenau selection function is used.
	Austin	The Austin selection function is used.
OreSpecific	CheckBox	Ore-specific parameters, allows the selection function to be separately input for all species. Default is all species have the same set of single input properties. This option is only available if there is more than one species in the project with the size distribution property.
The fields below are only visible if Herbst-Fuerstenau is selected.
S1E	Input	Input parameter of the Herbst-Fuerstenau selection function.
Zeta1	Input	Input parameter of the Herbst-Fuerstenau selection function.
Zeta2	Input	Input parameter of the Herbst-Fuerstenau selection function.
dp1	Input	Input parameter of the Herbst-Fuerstenau selection function.
The fields below are only visible if Austin is selected.
Alpha0	Input	Input parameter of the Austin selection function.
Alpha1	Input	Input parameter of the Austin selection function.
Alpha2	Input	Input parameter of the Austin selection function.
dCrit	Input	Input parameter of the Austin selection function.
Alpha02	Input	Input parameter of the Austin selection function.
Alpha12	Input	Input parameter of the Austin selection function.
Breakage
Method	User	The user specifies the breakage function.
	Austin and Luckie	The Austin and Luckie breakage function is used.
	King	The King selection function is used.
	Natural Selection	The Natural selection function is used.
OreSpecific	CheckBox	Ore-specific parameters, allows the breakage function to be separately input for all species. Default is all species have the same set of single input properties. This option is only available if there is more than one species in the project with the size distribution property.
The fields below are only visible if Austin and Luckie is selected.
Beta0	Input	Input parameter of the Austin and Luckie breakage function.
Beta1	Input	Input parameter of the Austin and Luckie breakage function.
Beta2	Input	Input parameter of the Austin and Luckie breakage function.
Beta01	Input	Input parameter of the Austin and Luckie breakage function.
The fields below are only visible if King is selected.
K	Input	Input parameter of the King breakage function.
n1	Input	Input parameter of the King breakage function.
n2	Input	Input parameter of the King breakage function.
n3	Input	Input parameter of the King breakage function.
y0	Input	Input parameter of the King breakage function.
Results
CakeDensity / delta	Display	Solids density of the cake.
CriticalSize / xc	Display	Critical size.
InterparComprAngle / alphaIP	Display	Interparticle compression angle.
RollsVelocity / U	Display	Circumferential velocity of the rolls.
RollsSpeed	Display	Rotational speed of the rolls.
SpecificThroughput / mDot	Display	Specific throughput parameter of the HPGR unit.
CompressionForce / F	Display	Compression force of the rolls.
GrossPower / P	Display	Gross power draw of the HPGR unit
SpecificEnergy / W	Display	Specific energy of grinding.