| 摘要 |
Apparatus (10) for hydraulically separating a mixture of small size mineral particles (42) according to different mineral densities (61 and 91) consists of an elongated inclined tubular conduit (11) which includes appurtenances and adjustments by which the innately higher midstream velocity and lower, conduit sidewall surface velocity forces of the adjusted upward fluid flow through the inclined conduit (11) are systematized for the processing. In combined operations the mixed feed particles (42), after introduction at intermediate longitudinal location (31) of the inclined conduit (11), drop rapidly out of fluid flow suspension and are processed while continuously maintained in a predominantly precipitated condition. During processing, the precipitated particles (42) are formed into a more or less continuous layer of two superincumbent strata which move or tend to move relatively in opposite longitudinal directions throughout the length of the inclined conduit (11). Within the two opposite moving strata, the heavy mineral particles (91) spontaneously segregate into the downward moving underlying stratum, and thus are discharged from the lower conduit terminus (14) as concentrate particles ( 91). Meanwhile, the light mineral particles (61) spontaneously segregate into the upward moving, overlying particle stratum, and thus are discharged from the upper conduit terminus (13) as tailings particles (61).
|
