Patent ID: 11865548
Assignee: OREKINETICS INVESTMENTS PTY LTD
Field: Chemical engineering (Chemistry)
Classification: CPC B | IPC B

Claim 0:
1. A spiral separator for separating more-desired material from less-desired material, the spiral separator comprising:
a feed arrangement for feeding a slurry of mixed more-desired material and less-desired material;
a spiral trough; and
a splitting arrangement for off-take of a concentrate band of more desired material;, wherein the spiral trough is configured to provide a trough floor region with an effective cross-trough floor slope which reduces by between 5 and 8 degrees in a turn immediately upstream of the splitting arrangement; and
wherein at least some of the turn immediately upstream of the splitting arrangement comprises a concentrate refiner region, in which the concentrate band of the slurry is refined by radially outward migration of less-desired material from the concentrate band.