Method and apparatus for the production of a suspension of fibro

Details Method and apparatus for the production of a suspension of fibro Method and apparatus for the production of a suspension of fibro

1980-11-20

1983-01-11

Smith, William F.

Paper making and fiber liberation

Processes of chemical liberation, recovery or purification...

Waste paper or textile waste

162 5, 209164, D21B 132, B21C 502

Patent

active

043681018

ABSTRACT:
The disclosure concerns a method and apparatus for producing a suspension of fibrous material from waste-paper. Following dissolving the waste-paper, cleaning the dissolved suspension and stain removal, the suspension is floated in series of flotation cells. The suspension is first floated through a first series of flotation cells. Thinning liquid medium, such as water, is added to the suspension. It is then floated through a second series of flotation cells. In one embodiment, the cells of the second series are larger than the cells of the first series. Following the second series of cells, the material floated from the second cells is delivered to another cell. In another embodiment, the cells of the second series are themselves divided into two separate rows of cells and the suspension is divided among the rows of second cells. In this embodiment, following flotation through the second cells, the material floated from the second cells is next delivered to joint secondary cells.

REFERENCES:
patent: 3151062 (1964-09-01), Duke
patent: 4133038 (1979-01-01), Niemi
patent: 4213992 (1980-07-01), Thornton
Escher Wyss News, vol. 44, 1, 1971, pp. 70-79.

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