Centrifugal Concentrators are designed to recover minerals based on their higher densities, which results in greater forces acting on them in a gravitational field. APT's alluvial and hard rock mining solutions are designed in such a way that they can be paired with either our GoldKacha Concentrator or the FLSmidth Knelson concentrator. Depending on the size of your project, several of our concentrators can be used, or a larger Knelson concentrator. Below is an explanation of how centrifugal concentrators work, as well as direction to where you can see them operating in the field and exactly how they could work on your mine site.
This is how centrifugal concentrators work. Material is fed into a rotating bowl, which provides a centrifugal force that allows heavier and more dense minerals to flow to the outer surface of the bowl while the lighter material will remain on the inner of the bowl. The outer surface of the bowl has grooves around its edge, allowing for heavy minerals to be trapped within these grooves. The inner of the bowl will contain the lighter gangue material which is simply washed out. The heavy minerals trapped around the bowls edge are now concentrates, and can be removed from the bowl for final upgrade.
When the GoldKacha Concentrator is used, material is fed by hand into the top of the GoldKacha bowl, and concentrates are produced within the bowl. These concentrates are washed off and fed through the GoldMasta gold sluice and then panned for optimal gold liberation, or directly panned. A video explains the process more here. The FLSmidth Knelson videos can be viewed too, with options for a CVD concentrator and a Batch concentrator. All videos are displayed on our mining videos page here.