Deinking process

Details Deinking process Deinking process

D - Textiles, Paper

21

C

D21C 5/02 (2006.01)

Patent

CA 2217290

Disclosed is a deinking process using white water, according to which excellent whiteness and an excellent areal ratio of residual ink fines can be secured while maintaining a proper pulp yield. The deinking process comprises a flotation step wherein treatment water containing white water is used. At least part of the flotation step is effected in the presence of at least one compound selected from the group consisting of cationic compounds, amine compounds, acid salts of amine compounds, and ampholytic compounds.

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