Treatment of fly ash produced by a waste incinerator and contain

Details Treatment of fly ash produced by a waste incinerator and contain Treatment of fly ash produced by a waste incinerator and contain

1996-05-09

1998-02-10

Suchfield, George A.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

651348, 405128, 588236, 588248, 588900, B09B 300

Patent

active

057163162

ABSTRACT:
This invention relates to a process for treating fly ash produced by a waste incinerator and containing chlorides of toxic metals, which includes a step consisting of subjecting said fly ash to a phosphating reaction, at high temperature, to convert the chlorides of toxic metals into phosphates, the phosphating reaction being obtained by the addition of a reactant comprising a phosphorus compound, characterised in that said phosphorus compound is a non-metallic compound and in that the chlorinated products obtained are discharged in a gaseous form. It also relates to an installation for implementing this process.

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patent: 5284636 (1994-02-01), Goff et al.
patent: 5347073 (1994-09-01), Hochleitner et al.
patent: 5424042 (1995-06-01), Mason et al.
patent: 5482528 (1996-01-01), Angell et al.
patent: 5516974 (1996-05-01), Sasae et al.
patent: 5521132 (1996-05-01), Talmy et al.
Patent Abstracts of Japan, vol. 10, No. 004 (C-322), Jan. 9, 1986, JP-A-60 165326, Aug. 28, 1985.

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