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July 2019
Volume 71    Issue 7

The power of Bazin—Production forecasting with the Bazin methodology

Mining Engineering, 2019, Vol. 71, No. 7, pp. 91-92
Laroche, Frank; Di Sandro, David; Vien, Andre


ABSTRACT:

In 1994, Claude Bazin presented a novel method for linking size data from milling models to the feed input of flotation models. It was achieved with the simple addition of a metal/mineral distribution–size distribution relationship. This allows grade and recovery predictions from a varying mine plan through product size distribution predictions. 

   This paper presents a case study where this elegant method has been used to build a powerful forecaster at a process plant from historic operating data. This operation has used the methodology to forecast production on a quarterly, annual and life-of-mine basis since the late 1990s. It has been upgraded several times to incorporate new drivers as the complexity of feedstocks increased over the years.


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