Reject Recovery by ZRI Process – an industrial Reffibre-Demonstration, 2016 Pulping, Engineering, Environmental, Recycling, Sustainability (PEERS) Conference Proceedings

Due to a decreasing market of graphic paper usage and production, a shortage of paper for recycling for deinking purposes in future is possible. In order to strengthen their competiveness, deinking mills are forced to reduce their losses or generate side streams for other applications. Solutions are necessary to reduce paper for recycling usage or to improve the processes for higher yield.  During the EU-funded “Reffibre” Project, fibre recovery process developed by Haarla has been established as an industrial demonstration case to a Swiss newsprint production line. By installing the special treatment as an additional step to the common process, fine screening reject of the DIP line could be treated for gaining back serious amounts of fibres. These fibres out of the reject stream are directly fed back to the process, reducing the process losses of the DIP line by ca. 0.5% currently, but with a final target of 1.0%, resulting in respective reduction on demand for Paper for Recycling (PfR) as raw material. The paper shows first results of the industrial application of the fibre recovery process to an industrial deinking process, showing the treatments influence on both stock quality and quantity, to illustrate technological and economical potential of the new technology. 


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