Siemens Aktiengesellschaft

Primetals Technologies Germany Gmbh

Lilla Grossmann

Wolfgang Krieglstein

Werner Hartmann

Robert Fleck

Stefan Blendinger

Gerold Franke

Sven Menger

A flotation apparatus may include a flotation chamber having a side wall and a base, a stirrer, a sparging device associated with the stirrer, a first 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 charging the flotation chamber with pulp, wherein the charge line leads into the flotation chamber at a point above the stirrer and an ejector is present in the charge line. Further, a flotation method is performed in two stages inside a flotation chamber of a flotation apparatus, wherein an ejector is used in a first flotation stage and a stirrer is used in a second flotation stage.

Flotation apparatus and flotation method

A sparging device for a flotation cell may include a central gas tube with a central gas orifice which is adjoined by at least two connecting tubes each having a connecting gas orifice, the connecting tubes being aligned at a right angle ss to a longitudinal axis LZ of the central gas tube, the central gas orifice being connected to the connecting gas orifices, and each connecting tube being connected to at least one gas injection unit at its end remote from the central gas tube. A flotation cell with such a sparging device and a flotation method are also disclosed.

Sparging device for a flotation cell

A pneumatic flotation machine () has a housing () with a flotation chamber (), at least one nozzle arrangement () for feeding gas and a suspension into the flotation chamber as well as at least one gassing arrangement () for feeding further gas into the flotation chamber (), which arrangement is disposed within the flotation chamber () and below the at least one nozzle arrangement (), wherein there is furthermore at least one adjusting device () for changing a position of the at least one gassing arrangement () in the flotation chamber ().

Pneumatic flotation machine and flotation method

Growing community of inventors

Erlangen, Germany

Lilla Grossmann