Flotation

Similar to existing technologies, Metso’s OptiCell flotation cell has a linear design, but it offers superior performance due to its innovative and unique injector technology.

OptiCell combines all the key elements of a flotation process: effective ink removal, cost efficiency, reliability, user friendliness, and easy maintainability. It features proven technology and the latest technical innovations. This flotation cell is highly efficient in costs and operation. It can be easily scaled to various production levels without compromising performance. OptiCell flotation technology cost-efficiently enhances the performance of the deinking line and ensures a reliable flotation process.

The heart of the flotation process is the aeration injector. In OptiCell this has been designed with special care. It is based on the experiences gained with earlier flotation technologies combined with modern computational fluid dynamics calculations and new image analysis methods. The combination of these approaches results in a unique self-aspirating injector that represents the latest technology. This injector differs significantly from traditional injectors, featuring up-flow feed, innovative jet nozzles, aspiration and aeration arrangements and an efficient diffuser. Combined, this ensures optimal bubble size distribution. The elliptical shape of the cells is optimal for internal pulp circulation for improved ink removal. Moreover, the flatness of the cells intensifies the rise of air bubbles within the available volume.