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January 2019
Volume 71    Issue 1

Real world improvement through virtual instrumentation at OceanaGold Haile

Mining Engineering, 2019, Vol. 71, No. 1, pp. 20-20
Schug, Brett; Anderson, Caelen; Nazari, Sohail; Cristoffanini, Carlos


PREVIEW:

The Haile gold mine in South Carolina is increasing the automation level of its processing plant in order to improve operational stability. One step toward this goal is the application of a digital twin concept to provide virtual instruments. Haile has engaged Andritz to implement virtual instruments at its grinding area hydrocyclones and at its tailing thickener underflow pump. These virtual instruments provide density values in a traditionally difficult location for reliable slurry density measurement. The digital twin is a first-principles integrated design engineering with advanced simulation (IDEAS) simulation model, connected in real time to the control system. Results have been promising, with the virtual instrument values matching the physical instrument under normal operating conditions, and showing better prediction under upset conditions. Haile plans to use the virtual instruments as optional process control parameters. 



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