Method and mixture for treating electric arc furnace dust

Details Method and mixture for treating electric arc furnace dust Method and mixture for treating electric arc furnace dust

1992-08-26

1993-09-14

Taylor, Dennis L.

Hazardous or toxic waste destruction or containment

Containment

Solidification, vitrification, or cementation

106791, 75323, 75773, 423DIG20, C04B 728

Patent

active

052451224

ABSTRACT:
A method and a mixture for chemically stabilizing electric arc furnace dust (EAFD) by entrapping the metals inherent in EAFD within a cementitiously hardened product from the mixture. The method includes using the pozzolanic characteristics of EAFD and forming a mixture of EAFD with sufficient water and lime, as necessary, and then allowing the mixture to react to form a cementitiously hardened product. The hardened product has acceptable leachate concentrations, permeability characteristics and unconfined compressive strength.

REFERENCES:
patent: Re29783 (1978-09-01), Smith et al.
patent: 3488203 (1970-01-01), Andersson
patent: 4613374 (1986-09-01), Smith
patent: 4840671 (1989-06-01), Lynn et al.
patent: 4889640 (1989-12-01), Stanforth
patent: 4911757 (1990-03-01), Lynn et al.
patent: 5037479 (1991-08-01), Stanforth
patent: 5130051 (1992-07-01), Falk

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