Apparatus for Classifying Charge Material

Static-dynamic sifter for sifting (100) charge material, having

• a. a static sifter (1) which has an aerating base (1a) oriented at an angle relative to the vertical and through which sifting gas (2) flows,
• b. an inlet opening (3) for delivering the charge material (9) to the aerating base (1a),
• c. an outlet opening (4) for the coarse material,
• d. a dynamic sifter (5), located downstream, which comprises at least one rotor (5a), and
• e. at least one outlet opening (6) for the sifting gas 2′ laden with fine material, characterised in that
• the aerating base (1a) has a width (b) to vertical height (h) ratio of at least 0.45, preferably of at least 0.6.