Specialized metallurgical processes – compositions for use therei – Processes – Electrothermic processes
Patent
1992-11-10
1994-02-08
Rosenberg, Peter D.
Specialized metallurgical processes, compositions for use therei
Processes
Electrothermic processes
75693, C22B 704
Patent
active
052845036
ABSTRACT:
Lead-contaminated soil and battery casings are remediated using a plasma arc furnace which pyrolyzes the soil and waste battery casings so as to form a vitrified slag and a combustible gas, respectively. The combustible gas along with volatilized lead (and other heavy metals which may be present) are transferred to, and used as a primary fuel by, a conventional smelting furnace. The volatilized lead that is entrained in the combustible gas is thus transferred to the recovery and environmental protection/control equipment associated with the smelting furnace. The soil, on the other hand, is converted into a non-toxic (i.e., according to the Toxicity Characteristic Leaching Procedure) vitrified slag by the plasma arc which may be crushed and used as a commercial material (e.g., roadway aggregate, asphalt filler material and the like) or simply transferred to a landfill where it poses no environmental threat.
REFERENCES:
patent: 1492241 (1924-04-01), Carpenter
patent: 1515616 (1924-11-01), Popenhusen
patent: 1715262 (1929-05-01), White
patent: 2049633 (1936-08-01), Thomsen
patent: 2756044 (1956-07-01), Neumann
patent: 2826490 (1958-03-01), Neumann
patent: 3561684 (1991-02-01), Fisher et al.
patent: 4102676 (1978-07-01), Jarquay
patent: 4115109 (1978-09-01), Libach et al.
patent: 4180251 (1979-12-01), Jaquay
patent: 4229271 (1980-10-01), Prengaman et al.
patent: 4310351 (1982-01-01), Lieberman
patent: 4340421 (1982-07-01), Bergsoe
patent: 4571261 (1986-02-01), Buren et al.
Royer et al, "Control Technologies for Remediation of Contaminated Soil and Waste Deposits at Superfund Lead Battery Recycling Sites", J. Air Waste Manage. Assoc., vo. 42, No. 7, pp. 970-980 (Jul. 1992).
Application of Plasma Technology in the Environmental Waste Processing Industry, CMP Report No. 95-5, Jul. 1992.
Eriksson, "The Plasmazinc Process for Recovery of Zinc from Primary and Secondary Materials", Zinc '85, Ch. 52, pp. 827-839 (1985).
Bygden et al, "Applicatioin of Kellogg's Model to the Slag-Funing Practice in Sweden", Zinc '85, Ch. 11, pp. 171-183 (1985).
Bunney et al, "The Commercial Development of Plasma Technology: EAF Dust Application", AIME Conference, San Diego, Mar., 1992.
Penberthy, "Why Glass is a Good Host for Hazardous Waste", Glass Industry, pp. 22-24 (May 1992).
Roy, "Cyclone Furnace destroys Organics, Immobilizes Heavy Metals, Radionuclides", Hazmat World, pp. 5914 60 (Aug. 1992).
Wang et al, "Recovering Zn, Pb, Cd, and Fe from Electric Furnace Dust", JOM, pp. 42-45 (Apr. 1990).
"Plasma Arcs Sputter New Waste Treatment", Chem. Engineering, pp. 32-33 (Dec. 1991).
Recovering Lead from Contaminated Solids, The Hazardous Waste Consultant, pp. 1.22-1.24, Sep./Oct., 1991.
Plasma Gasification Could Set New Standards for Municipal Solid Waste Disposal, EnerSearch, Ontario Ministry of Energy.
Baranski John P.
Bitler John A.
Exide Corporation
Rosenberg Peter D.
LandOfFree
Process for remediation of lead-contaminated soil and waste batt does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Process for remediation of lead-contaminated soil and waste batt, we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Process for remediation of lead-contaminated soil and waste batt will most certainly appreciate the feedback.
Profile ID: LFUS-PAI-O-695095