B07B—SEPARATING SOLIDS FROM SOLIDS BY SIEVING, SCREENING, SIFTING OR BY USING GAS CURRENTS; SEPARATING BY OTHER DRY METHODS APPLICABLE TO BULK MATERIAL, e.g. LOOSE ARTICLES FIT TO BE HANDLED LIKE BULK MATERIAL
B07B4/00—Separating solids from solids by subjecting their mixture to gas currents
B07B4/02—Separating solids from solids by subjecting their mixture to gas currents while the mixtures fall
Apparatus and method for separating and recovering relatively coarse mineral particles and relatively fine mineral particles from a slurry containing said particles