Process for aerating dispersions

Paper making and fiber liberation – Processes of chemical liberation – recovery or purification... – Waste paper or textile waste

Reexamination Certificate

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Details

C162S055000, C162S057000, C209S170000, C210S221100, C210S221200

Reexamination Certificate

active

06881297

ABSTRACT:
A device and process for aerating dispersions, particularly for flotation of pulp suspensions, in a de-inking process where the pulp suspension containing dirt particles is sprayed into a tank together with air. The air is injected at a minimum of two successive points and mixed with the suspension.

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patent: 5762416 (1998-06-01), LeSire
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patent: 6217761 (2001-04-01), Catanzaro et al.
patent: 6475337 (2002-11-01), Gabl et al.
patent: 040 48921 (1992-02-01), None

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