Abstract
Abstract This paper describes the use of modelling and simulation techniques in the analysis and optimisation of grinding circuits at the Lead/Zinc Concentrator of Mount Isa Nines Limited. The objectives of the studies were to:- 1. improve primary grinding circuit performance by reducing the production of -0.006 mm galena fines. 2. maximise the fineness of grind in the secondary grinding circuit using the existing grinding power and pumping capacities. The study has shown that quantitative models can be useful in analysing plant operations. The models described plant operations, planned pilot scalc tests and simulated the effect of process changes on plant performance. The use of automated scanning electron microscope technology to understand the liberation characteristics of the major minerals in the Mount Isa Lead/Zinc ore is also described.
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