Agglomeration and magnetic deinking for office paper

Magnet deinking of office paper (OP) is a promising technology for the production of high quality secondary fiber. The technique is possible because a significant portion of the toner in OP furnish has a magnetic character. Toner magnetic susceptibility can vary from weakly paramagnetic to ferromagnetic depending on the iron oxide content of the toner partides.The amount of iron oxide in toners varies. It can contain as much as 65% by weight depending on the type of image development process used by electrophotography machines.