Refining process for paper pulp using a silica sol

Details Refining process for paper pulp using a silica sol Refining process for paper pulp using a silica sol

1992-01-31

1993-07-06

Hastings, Karen M.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Treatment with particular chemical

162 26, 1621816, D21D 120

Patent

active

052250415

ABSTRACT:
A refining process for paper pulp in which colloidal silica sol is mixed with the paper pulp to be refined. The addition of the colloidal silica sol reduces the time necessary to refine the pulp to a predetermined freeness value compared to refining in the absence of the colloidal silica sol.

REFERENCES:
patent: 4311553 (1982-01-01), Akerlund et al.
patent: 4643801 (1987-02-01), Johnson
patent: 4755259 (1988-07-01), Larsson
patent: 4795531 (1987-01-01), Sofia et al.
patent: 4849053 (1989-07-01), Gentile, Jr. et al.

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