Method of treatment of sludge from a flue gas desulfurization pl

Details Method of treatment of sludge from a flue gas desulfurization pl Method of treatment of sludge from a flue gas desulfurization pl

1985-03-22

1986-12-09

Heller, Gregory A.

Chemistry of inorganic compounds

Sulfur or compound thereof

Oxygen containing

423166, 423242, 210777, 210778, C01F 146, C01B 1700, B01D 3702, C02F 100

Patent

active

046279709

ABSTRACT:
Desulfurization sludge from a flue-gas scrubber operating with calcium-containing additives is dewatered in a thin layer with precipitatable impurities in the liquid phase being precipitated out by neutralization and collected in a thin layer which is then rinsed. The presence of these precipitated impurities on the gypsum which is recovered by this process has not been found to be detrimental to the use of it as a construction material.

REFERENCES:
patent: 3903243 (1975-09-01), Atsukawa et al.
patent: 4388197 (1983-06-01), Lumikko
patent: 4503020 (1985-03-01), Weissert

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