Chemistry of inorganic compounds – Phosphorus or compound thereof – Elemental phosphorus
Patent
1983-10-03
1984-11-06
Heller, Gregory A.
Chemistry of inorganic compounds
Phosphorus or compound thereof
Elemental phosphorus
423316, 423323, 210778, 210906, C01B 2501, C01B 2502, C01B 2504
Patent
active
044811764
ABSTRACT:
The invention is directed to a process for recovering elemental phosphorus values from phosphorus-containing waste materials. The process comprises reducing the size of the solid particulate materials of the sludge and forming a uniform homogenous sludge which is filtered through a high-pressure thin-cake filter resulting in a filtrate high in phosphorus values.
The invention also discloses a pump retrieval means for retrieving the sludge from contaminated disposal areas and a preconditioning dewatering means for thickening and clarifying the sludge prior to comminuting the solids contained therein and filtrating to recover the phosphorus values contained therein.
REFERENCES:
patent: 3084029 (1963-04-01), Barber et al.
patent: 3113839 (1963-12-01), Barber et al.
patent: 3684461 (1972-08-01), Muller et al.
patent: 4399037 (1983-08-01), Diskowski et al.
patent: 4402833 (1983-09-01), Bennett et al.
Dodson David L.
Pate Bruce D.
Rogers Philip C.
Heller Gregory A.
Stauffer Chemical Company
White Vivienne T.
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