Recovery of phosphorus from dilute waste streams

Details Recovery of phosphorus from dilute waste streams Recovery of phosphorus from dilute waste streams

1984-11-19

1986-06-17

Lutter, Frank W.

Classifying, separating, and assorting solids

Special applications

209211, 209 12, 2101953, 210787, 210806, 210907, B01D 4300

Patent

active

045954925

ABSTRACT:
Process for recovery of elemental phosphorus from phosphorus sludge produced in a phosphorus furnace by treating the sludge in a centrifugal separator and separating a fine dirt slimes fraction from a recovered heavy fraction containing the major portion of phosphorus; treating the slimes fraction in hydrocyclones not over one inch (24.4 mm) in diameter to separate two streams, a first phosphorus-poor stream containing particles smaller than 8-15 micrometers, and a second phosphorus-rich stream containing particles larger than 8-15 micrometers; recycling the second, phosphorus-rich stream to the centrifugal separator for phosphorus recovery, and discarding the first, phosphorus-poor stream.

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patent: 3929633 (1975-12-01), Visman et al.
patent: 3940331 (1976-02-01), Rastatter
patent: 4036664 (1977-07-01), Priebe

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