Abstract
The mineralogy of Waipipi ironsands was investigated with particular emphasis on composite nature and its effect on ironsand beneficiation.
The relevance of the Davis Tube magnetic separator in defining a composite problem was examined. Various methods of separating mineral fractions based on composite nature were attempted. Washability studies of borehole samples are presented and their application to processing in a gravity circuit discussed.
Results from a plant·sampling run are given and problem areas highlighted. Further studies extended to a two months test programme at the Waipipi Ironsands Limited plant involving magnetic separation are presented.