| 摘要 |
PURPOSE: To perform stable operation of a flotation system while suppressing the disturbance of the operation state with foam by measuring the amount of foam defined by the height of foam in a foam-collecting groove of a flotation cell, relative air content, content of precipitated slurry, etc., with a sensor and controlling a specific parameter by the measured data. CONSTITUTION: The generation of foam in a flotation cell or a flotation apparatus is controlled by introducing a paper fiber suspension from a supplying line 2 into a cell 1, introducing air into the supplying line 2 through a control valve 4 and a metering line 3, mixing the air into the suspension by the sucking action and turbulent action to generate fine foam and clean the suspension, measuring the quantity of the foam as the height of foam collected in the foam collection groove 5, relative air content or content of precipitated slurry with a corresponding sensor 7 attached to the foam collection groove 5 and controlling a parameter of the material or process relating to the flotation apparatus affected by the quantity of foam by a controller 8 based on the measured data. |
