On-line analysis systems have found widespread application in the
metalliferous mineral and coal industries. The continuous analysis and
rapid response of these systems has led to improved control of mining,
processing and blending operations, with increased recovery of valuable
minerals and coal combustibles.
The paper reviews developments in on-line analysis by CSIRO and
Mineral Control Instrumentation Ltd which led to the award of the
Australia Prize 1992. These commercialised systems analyse mineral and
coal slurries; determine the ash and moisture contents of coal on
conveyors, and the moisture content of coke on conveyors; and determine
the carbon content of fly ash. These gauges are estimated to have resulted
in productivity increases valued at $50 million per year to Australia.