RECOVERING FIBER AND FILLER FROM MINERAL LOADED PAPER MILL REJECTS

摘要

The rejects of paper mills producing coated or other filler containing grades have a high content of coating flakes and coarse filler particles, which are unusable in their original form on the paper machine. These rejects are raw material waste and lead to excess effluent handling, transportation costs and environmental concerns. There has not been any economical technology available to recover the usable raw material, the fibers and the minerals, wasted in the rejects. With the new Fiber and Filler Recovery process, up to 70-90% of these solids can be returned to the paper furnish while only the unwanted material is rejected from the mill.