Core Group has extensive experience in conventional ball and rod mill grinding, as well as stirred bead ultrafine grinding. The laboratory can carry out comminution testwork ranging from 0.5 kg batch grinding tests up to 500 kg per hour continuous pilot plant testing. The latter features a 4.5 m x 30 cm belt conveyor and a 1 m3 feed hopper which is mounted on a 3 t platform load cell for feed rate monitoring and control.
Ultrafine grinding duties for a wide range of sample sizes can be achieved using an M4 IsaMillTM, a laboratory Metprotech mill (with a range of grinding chambers) and an English China Clay mill. Core is accredited by Glencore Technology to perform IsaMillTM ‘Signature Plot’ grinding procedures suitable for IsaMillTM sizing and design purposes. The laboratory has a wide range of particle characterisation tools to assist in the analysis of mineral grinding. These include laboratory Endecotts screens and rotap shakers, Kason screens and screen shaker for larger samples, Malvern laser diffraction particle size analyser and Brookfield and Bohlin viscometers.