JKSim Met Steady State Processing Plant Simulator Review

JKSim. Met Steady State Processing Plant Simulator Review 1. 2 of the 01 -04 -06 Split Engineering LLC. Split Engineering Chile Ltda. 110 S. Church Avenue, Suite 8312 CP 85701 Tucson Arizona, USA Fono: (1)-(520)-3273773 Fax : (1)-(520)-3267532 http: //www. spliteng. com Eduardo Marquina #3937 oficina 1201 Casilla 19158 - Correo 19 Vitacura - Santiago, CHILE Fono: (56)-(2)-2064674 Fax : (56)-(2)-2064668 http: //www. spliteng. cl

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.

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.

Overview System Description • Jk. Sim. Met is a software that facilitates the simulation of mineral processing plants operations. • JKSim. Met Gives to the engineer the capability to design and improve any grinding-clasification circuit. • JKSim. Met makes steady state simulations of a serie of grindingclasification operations.

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

Overview Implementation • Software License. • A PC (Personal Computer) with next minimal requirement: ü Operative System : Microsoft Windows 98/NT 4/2000/XP. ü Processor : 400 Hz. ü RAM Memory : 128 MB (recommended 256 MB). ü Hard Disk : 2 GB with 100 MB free space. ü Monitor : Graphic SVGA (15”). ü CD Drive. ü Floppy disk drive (3. 5 inch). ü Mouse and keyboard • A person who has attended in a formal trainning.

Overview Security • JKSim. Met has security (Dongle) ü Parallel port ü USB port ü PCMCIA (SIC) port keys

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

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

Process Cycle COMPARISON • The mineral processing can be simplified as a cycle that involves design, implementation, measurement of results and comparison stages, at the moment, because of JKSim. Met this is a iterative and interactive process. • JKSim. Met allows analysis of every one of this stages to measure their results as a set. DESIGN IMPLEMENTATI ON MEASUREMEN T

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

Process Definition • Design criteria • Available data • Performance objectives • Available ü Equipment models ü Default parameters model

Process Evaluation • Modelling and simulation • Performance characterization • Visualization • Available ü Simulation ü Model fitting ü Mass balancing

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

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

JKSim. Met Operation Flowsheet Design Introduction • The simulation process involves a representative flowsheet definition, input of available data, followed by fitting parameters model and data for simulation. • JKSim. Met 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

JKSim. Met Operation Flowsheet Design • Add Equipment In this stage the users select the flowsheet equipment for the representative processing plant

JKSim. Met 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.

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

JKSim. Met 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: ü Equipment depending parameter. Ø Dimensions ü Ore depending parameter Ø Ø Ø Work Index Specific gravity Breakage function

JKSim. Met Operation Model fitting • Parameters: ü Measured or calculated operative parameters Ø 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.

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

JKSim. Met Operation Simulation • JKSim. Met technique simulation ü The JKSim. Met makes a steady state simulation of a serie of grinding-clasification operations, by using model process for all equipment involved in such process. ü 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.

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

JKSim. Met 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.

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

Contacto Para Mayor Información Comunicarse a: Split Engineering Chile Limitada • • Teléfono : (56) (2) 2064674. Fax : (56) (2) 2064668. E-mail : info@spliteng. cl Web : www. spliteng. cl

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