It has light structure, convenient installation, low abrasion, long life and powerful mixing power. “U” groove body reduces ores accumulated on the bottom and has light spindle parts, low installed power and energy conservation; it fills compressed air to ensure uniformly distributed foam and good ore grain suspension. It is divided into single-groove, double-groove, three-groove, four-groove, five-groove and six-groove units. Remarks: 1. Please mark out the model, quantity and flotation flow while ordering: ① allocation proposal and feeing mode② the number and driving mode (right drive, left drive) of scraper plate drive devices③ the quantity of feeding boxes, intermediate boxes and raw ore boxes. 2. The motor starting device is not offered when out of factory. 3. The wedge disc is produced according to the drawing of manufacturing plant, and large flotation machine adopts motor wedge disc.