Process for controlling operation of a flotation cell
AssigneeAndritz Inc.
InventorsHelmuth Gabl, Andreas Gorton-Hulgerth, Erwin Hertl
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Abstract
A method for controlling operation of a flotation cell, where the liquid level and the foam level in the cell are measured and controlled. The method includes measuring at least one quality characteristic of the accept leaving the cell and determining the set value(s) for the liquid level and/or the foam level on the basis of the measured quality characteristic. The method is particularly suitable for flotation of a pulp suspension, particularly in deinking flotation.
Claims19
A method for controlling operation of a flotation cell receiving a suspension and discharging an accept and a foam, the cell having a liquid level controller measuring and controlling the cell liquid level and a foam level controller measuring and controlling the cell foam level, the method comprising the steps of:
- measuring at least one quality characteristic of the accept discharged from the cell;
- and
- setting a value for the cell foam level within the foam level controller, the value of the cell foam level being determined by the measured value of the at least one quality characteristic.
A method for controlling operation of a flotation cell receiving a suspension and discharging an accept and a foam, the cell having a liquid level controller measuring and controlling the cell liquid level and a foam level controller measuring and controlling the cell foam level, the method comprising the steps of:
- measuring at least one quality characteristic of the accept discharged from the cell;
- setting a value for the cell foam level within the foam level controller, the value of the cell foam level being determined by the measured value of the at least one quality characteristic;
- and
- setting a value for the cell liquid level within the liquid level controller, the value of the cell liquid level be determined by the measured value of the at least one quality characteristic.
A method for controlling operation of a flotation cell receiving a suspension and discharging an accept and a foam, the cell having a liquid level controller measuring and controlling the cell liquid level and a foam level controller measuring and controlling the cell foam level, the method comprising the steps of:
- measuring at least one quality characteristic of the accept discharged from the cell;
- and
- setting a value for the cell foam level within the foam level controller or setting a value for the cell liquid level within the liquid level controller, the value of the level being determined by the measured value of the at least one quality characteristic.
Dependencies are inferred from the claim text.