Flotation Apparatus and Flotation Method

A flotation method using a flotation apparatus comprising a flotation chamber having a sidewall and a base and serving to contain a pulp, a foam-collecting device arranged in an upper region of the flotation chamber for the purpose of collecting a foam product formed during the flotation process, and a charge line for continuously charging the flotation chamber with pulp,

• wherein the method is performed in two flotation stages in-side a pulp-containing flotation chamber of the flotation apparatus, comprising:
• in a first flotation stage, dispersion of a gas in the pulp using a first mixing device arranged inside a charge line serving to feed pulp into the flotation chamber,
• in a second flotation stage, dispersion of the gas in the pulp using a second mixing device comprising a stirrer and a sparging device associated therewith,
• wherein the pulp is fed into the flotation chamber at a point located above the stirrer and above a turbulence zone formed in the pulp by the stirrer.