The first level in the selection of non-conforming doré bars is carried out, in practice, when the doré bars arrive at the refiner’s, where their surface is analysed. Levels 2 and 3 are carried out in specialised laboratories at the Universities of Lausanne and Geneva. These analyses are relatively sophisticated, feasible for few institutions, and time-consuming, whereas doré bars generally need to be processed very quickly. They generate a cost of about a hundred francs and require samples. These analyses are not carried out systematically, but only for non-compliant doré bars determined by the first level. It is therefore essential to make this selection when the doré bars arrive, immediately after the first chemical screening, before they enter the refining process. This conformity assessment must be carried out by a computerised evaluation.
Currently this automation requires the implementation of two steps:
– Transformation of the current statistical approach into an extensible approach. Indeed, we currently use a very “user friendly” statistical programme, but with entirely manual steps. An adaptation is therefore necessary.
– Creation of a computer programme that would be integrated into the doré reception process and which allows the automation of the selection process of non-compliant doré bars as soon as it arrives.
This immediate selection is essential to get the necessary samples for sub-project 2.
Implementation partner: Metalor
Research partner: UNIL
Duration of this sub-project: 12 months
Financial resources required:
Already supported funding: