Apparatus for deinking printed wastepapers

Details Apparatus for deinking printed wastepapers Apparatus for deinking printed wastepapers

1976-12-22

1979-04-03

Hill, Ralph J.

Classifying, separating, and assorting solids

Plural, diverse separating operations

Including electrostatic

209170, 209211, B03B 900, B03D 124, B04C 526

Patent

active

041476166

ABSTRACT:
An apparatus for deinking printed wastepapers in a system of separators through which printed wastepapers, previously impregnated with surface-active agents and alkalis, and repulped in the presence of an organic hydrocarbon compound and high-adsorptive flakes obtained by precipitating solutions of metal soaps of fatty or bituminous acids with solutions of salts of alkaline earths, are forced. The adsorptive flakes containing printing ink are separated from the repulped paper stock by latent vortex action.

REFERENCES:
patent: 2642185 (1953-06-01), Fontein
patent: 2819795 (1958-01-01), Fontein et al.
patent: 2843265 (1958-07-01), Rakowsky
patent: 2886287 (1959-05-01), Croley
patent: 2965522 (1960-12-01), Crespin et al.
patent: 3334516 (1967-08-01), Cedrone
patent: 3391787 (1968-07-01), Salomon
patent: 3696934 (1972-10-01), Oisi
Trawinski, H., "Theory, Applications, and Practical Operation of Hydrocyclones", E/MJ, Sep. 1976, pp. 115-127.

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