High-Efficiency Gold-Beneficiation Hydrocyclone
June.29,2026
Industrial production results demonstrate that using a hydrocyclone to process rougher flotation concentrate allows for the early and efficient recovery of the majority of liberated gold and gold-bearing pyrite, thereby increasing the overall gold recovery rate. Specifically, employing a short-cone hydrocyclone yields a higher gold recovery rate—reaching 75.04%—compared to using a standard classification hydrocyclone.
As mineral particles move downward in a spiral pattern with the slurry, they arrange themselves radially based on their settling velocities; lighter or finer particles with lower settling velocities are discharged through the central overflow pipe, while coarser or heavier particles migrate toward the vessel wall and move downward. Due to the wider cone angle, the downward flow of slurry along the wall is impeded, resulting in the formation of a rotating bed layer at the bottom of the cone. Within this bed layer, particles undergo loosening and stratification driven by rotational shear; lighter minerals migrate to the upper section and are carried out through the overflow pipe by the upward fluid flow, whereas heavier minerals settle into the lower layer and are discharged through the underflow outlet. Short-cone hydrocyclones are primarily used for the roughing of placer gold and in coal preparation to separate coal from rock and pyrite.
