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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
Fremgangsmåde til tørring og sortering af faste partikler lige fra en grovere til den fineste kornstruktur ved fremstilling af bituminøst blandingsmateriale og roterbar tørretromle til gennemførelse af fremgangsmåden.