Flotation container or cell

A flotation container for a liquid, which container has a shell with a bottom and a generally round, axial cross-section, a cross-sectional diameter, and a vertical center axis through said cross-section, which vertical center axis generally defines a first side and a second side of said container;

• at least one injector with a point of air intake preceding a mixing pipe with a mouth for essentially horizontal discharge in said liquid and a central axis, which mixing pipe essentially vertically extends into said liquid;
• a foam removal opening with an overflow edge arranged at an overflow edge height level above said container bottom;
• a liquid drain communicating to said liquid through said shell, which foam removal opening and said liquid drain are located on one of said first side and second side;
• said mixing pipe located on the container side opposite said liquid drain;
• said mixing pipe central axis offset from and generally parallel to said vertical center axis at a distance between about 0.15 and 0.25 of the container cross-sectional diameter;
• the mouth of said injector arranged above the container bottom at a mouth height level, which is below the overflow edge between about 0.3 and 0.5 times the overflow edge height;
• and,
• said liquid drain opening is generally arranged at approximately said container bottom.