1. JKSimMet Steady State Processing Plant Simulator
Review 1.2 of the
Split Engineering Chile Ltda.
Eduardo Marquina #3937 oficina 1201
Casilla Correo 19 Vitacura - Santiago, CHILE
Fono: (56)-(2)
Fax : (56)-(2)
Split Engineering LLC.
110 S. Church Avenue, Suite 8312 CP 85701
Tucson Arizona, USA
Fono: (1)-(520)
Fax : (1)-(520)

2. Overview
History
Developed after 3 decades of experience in modelling for the Australian Julius Kruttschnitt Mineral Research Centre, JKMRC.
The JKMRC is the scientific and technologic development center of the Queensland´s University - Australia.
In 1986 born the JKTech, the commercial division of JKMRC.
Split Engineering is the software official distributor for Latin America.

3. Overview Objectives Simulate grinding process.
Simulate clasification process.
Allow the characterization of a mineral processing plant.
Optimization of existings flowsheets.
Make conceptual desing studies.
Evaluate the suitability of different flowsheets to reach the wanted operation objectives.
Be a tool for Process Engineers in flowsheet analysis.

4. Overview System Description
JkSimMet is a software that facilitates the simulation of mineral processing plants operations.
JKSimMet Gives to the engineer the capability to design and improve any grinding-clasification circuit.
JKSimMet makes steady state simulations of a serie of grinding-clasification operations.

5. Overview System Description
JKSimMet includes processing models for equipments, such as:
Crushers (Jaw, Cone, Rolls, Gyratory)
Mills (Ball, rod, SAG, AG)
Hydrocyclone
Etc.
JKSimMet alows to make some adjust to models for characterize your plant.
JKSimMet allows to make mass balancing

6. Overview Implementation Software License.
A PC (Personal Computer) with next minimal requirement:
Operative System :Microsoft Windows 98/NT4/2000/XP.
Processor : 400 Hz.
RAM Memory :128MB (recommended 256MB).
Hard Disk :2 GB with 100 MB free space.
Monitor :Graphic SVGA (15”).
CD Drive.
Floppy disk drive (3.5 inch).
Mouse and keyboard
A person who has attended in a formal trainning.

7. Overview Security JKSimMet has security keys (Dongle) Parallel port
USB port
PCMCIA (SIC) port

8. Overview Components Simulation Model fitting Mass balancing
It is based on the capability to create a representative model of the plant.
Model fitting
This modality makes the model created get fit, as much as posible, to every specific plant and operative condition.
Mass balancing
It is use to make a balance of sizing data, chemical analysis data and flow rate data, taken from a steady state condition survey.

9. Overview Structure The software structure consists in:
Proyect: Contains one or more flowsheets and data associated for streams and units.
Flowsheet: Graphical representation of a section or complete mineral processing plant.
Equipment and Ports: the ports represents the connections between equipment.
Units: It is call unit to any equipment of processing like a ball mill or hydrocyclone.
Streams: Is a description of any flow of material in terms of tph or solids % or size distribution, etc.

10. Process
Cycle
The mineral processing can be simplified as a cycle that involves design, implementation, measurement of results and comparison stages, at the moment, because of JKSimMet this is a iterative and interactive process.
JKSimMet allows analysis of every one of this stages to measure their results as a set.
DESIGN
IMPLEMENTATION
MEASUREMENT
COMPARISON

11. Process Actions Definition Planning Evaluation Measurement Control
Objectives, operation conditions
Planning
Flowsheet Design, data
Evaluation
Performance analyze and predicts
Measurement
Developt
Control
Flowsheet optimization and data analysis

12. Process Definition Design criteria Available data
Performance objectives
Available
Equipment models
Default parameters model

13. Process Evaluation Modelling and simulation
Performance characterization
Visualization
Available
Simulation
Model fitting
Mass balancing

14. Process Measurement Results and observations Available
Data copy to clipboard
Statistical methods
Comparation between predicts and measurement data
Graphical representation of data

15. Process Control Standardizes the flowsheet configuration
Flowsheet simulation
Results optimization
Available
Simulation
Model fitting
Mass balance
Size distribution graphs
Configurable Reports
Online help files

16. JKSimMet Operation Introduction Flowsheet Design
The simulation process involves a representative flowsheet definition, input of available data, followed by fitting parameters model and data for simulation.
JKSimMet has a common structure for all the analysis tools, the users utilize the same flowsheet and follow the same procedures for all modes
Mass Balancing
Data Input
Model Fitting
Simulation
Results Analysis

17. JKSimMet Operation Flowsheet Design Add Equipment
In this stage the users select the flowsheet equipment for the representative processing plant

18. JKSimMet Operation Equipment Model parameters:
Includes the mill scalling (diameter, fraccion de llenado, lenght, critical speed, work index, ball top size), Rate/Discharge function parameters, función de rompimiento.

19. JKSimMet Operation Ports
Data input (flow rates and size), it can be done writing one on one every data or by copy-paste functions.

20. JKSimMet Operation Model fitting
For a real mineral processing operation, the best fitted values are different to the default values given by the system.
Every model has a list of adjustable parameters for fitt.
Parameters:
Equipment depending parameter.
Dimensions
Ore depending parameter
Work Index
Specific gravity
Breakage function

21. JKSimMet Operation Parameters:
Model fitting
Parameters:
Measured or calculated operative parameters
Depend of a combination of equipment, ore and flow rate parameters. For example: feed preassure of a cyclon
The figure, shows some model parameters that can be fitted for a ball mill and Cyclon.

22. JKSimMet Operation Model fitting How the model fitting program works
Works calculating the difference between experimental and predicted data.
Derives a value that represent the weigthed sum of squares (WSSQ).

23. JKSimMet Operation Simulation JKSimMet simulation technique
The JKSimMet makes a steady state simulation of a serie of grinding-clasification operations, by using model process for all equipment involved in such process.
This units can be combined in flowsheets and allows to the engineer to simulate the operation of a plant or subsections of a plant. A simulation can be controlled by specification of model parameters, the selection of process model and the specification of operation data.

24. JKSimMet Operation Simulation JKSimMet capabilities
In adittion to the simulation capacities descrived before, the JKSimMet has a lot of functions for use and archive a set of data.
The JKSimMet is a powerfull tool for the process engineer and metalurgist in terms of conceptual design, refining/alignment and monitoring of processing plants.
It makes possible the simulation of a number and variety almost indefinite of circuit design.
The simulation capacities can be improved making a model fit for plant conditions.

25. JKSimMet Operation Mass Balancing Concept
The mass balancing mode calculate the best adjusment of all selected flows and calculates the more small adjusment to make data congruents.
The sum squares difference between measured and adjusted data is taken as a goodness measure of the model fit.
The mass balancing program adjust the flow rates selected by user to find the best set of flow rates to make that the balance result become closer to the lab measurement.

26. JKSimMet Operation Mass Balancing How the mass balancing program works
It is a special case of the adjusting of the non-linear least squares.
It is a easily calculation solution.
It doesn´t require initial calculations of flow rates, excepting a flow rate that is used like initial data.

27. Contacto Para Mayor Información Comunicarse a:
Split Engineering Chile Limitada
Teléfono : (56) (2)
Fax : (56) (2)
Web :

28. Thanks for your attention!