Leading the way in deinking technology - with a new-generation flotation cell
Continuous product development, working towards new innovations and technical solutions, has always been highly valued at Metso. Being able to foresee the customer’s up-coming technical challenges and finding answers before they are requested is the aim of research and development. Metso’s new brand promise of ‘leading technology’ has once again been honored through true technical innovation – this time through a new flotation cell for the deinking process.
The OptiCell flotation cell is optimized in every respect. Based on computational fluid dynamics the new cell design provides an excellent basis for smooth flow velocities, which allows the
maximum quantity of bubbles to rise and enables efficient froth removal.
Particular to the OptiCell flotation cell is its linear and elliptical cell design and unique innovative injector, both of which offer several operational benefits. “We wanted to develop a new and even more efficient flotation cell, especially for large-scale production mills,” says Jouko Kolehmainen
, Senior Vice President of Metso Paper Valkeakoski Oy. According to Kolehmainen, current market demand is focused on exactly the type of flotation cell that the OptiCell represents. “In addition to the cell’s vital role in the deinking line, the new innovation will also play an essential role in Metso’s product portfolio,” he adds.
Truly a new-generation flotation cell - with unmatched features and benefits
New linear and elliptical cell design OptiCell flotation is optimized in every respect. The elliptical and linear shape of the cells, derived from computational fluid dynamics, provides an excellent basis for smooth flow velocities. This allows the maximum quantity of bubbles to rise and enables efficient removal of froth.
The new linear cell structure has been designed to ensure unhampered transfer of bubbles to the surface, which results in high ink removal. Additionally, the linear cell structure has a large surface area, which has a positive effect on reject separation and fiber loss. The new cell design also contributes to high sludge consistency by ensuring smooth drainage of froth.
Apart from the new cell structure, another up-to-date feature of OptiCell flotation is the fluid-dynamically optimized accept channel, designed to deliver flow evenly from each injector section to the pump suction. A generous reject channel, in turn, allows the reject froth to exit smoothly out of the cells. In the new cell, a headbox feeds the flow to the injectors, with the result that no injector needs its own pipe. Less piping leads to space savings.
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