A new flotation system for high efficiency at low energy input, 2006 Engineering, Pulping, and Environmental Conference

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In the last two years a number of resources were invested in the development of a new flotation system that would further innovate and optimize the de-inking process. This system would not only eliminate the ink in recovered paper but also separate contaminants. With regard to the development of a new system we were able to achieve promising results by the removal of a majority of macro and microstickies, PSA, and dirt while controlling the residual ashes on the foams. An additionally important parameter is the recovery of energy consumption (50% less than various cells present in the market today). The flotation system can be single or multi-level and more flotation devices can be inserted into the de-inking system using different configurations. The flotation device can be applied to existing cells with simple modifications that can make possible the conversion of the existing de-inking systems with low investment and with a drastic reduction in energy consumption.