Robert A Lamastro

US Patent:

52583368, Nov 2, 1993

Filed:

Feb 10, 1992

Appl. No.:

7/832925

Inventors:

Robert A. LaMastro - Pitman NJ
Dennis E. Kauser - Monroeville PA

Assignee:

Wheaton Holding, Inc. - Wilmington DE

International Classification:

C03C 3091

US Classification:

501 66

Abstract:

The present invention is drawn to an amber glass composition comprising, in weight percent, about: 70-79% silicon dioxide, 2. 0-3. 0% aluminum oxide, 3. 8-4. 4% sodium oxide, 0. 1-1. 0% potassium oxide, 13. 5-14. 5% boron oxide, 4. 9-7. 3% manganese dioxide, and 0. 2-0. 9% iron oxide, and having a glass colorant system selected from iron-manganese and iron-titania.

US Patent:

50413988, Aug 20, 1991

Filed:

Feb 22, 1989

Appl. No.:

7/314361

Inventors:

Dennis E. Kauser - Millville NJ
Robert A. LaMastro - Pitman NJ

Assignee:

Wheaton Industries - Millville NJ

International Classification:

C03C 600

US Classification:

501 27

Abstract:

A process for treatment of incinerator ash typically including heavy metals and both water soluble and insoluble fractions. The insoluble fraction is first removed from the fly ash. The soluble fraction is treated to precipitate heavy metal compounds. Preferably, the heavy metal precipitates are incorporated in a vitrifiable batch. In a separate vitrifiable batch, the insoluble fly ash portions may also be incorporated. Most preferably, bottom ash from the incinerator is also incorporated in a glass batch. The bottom ash glass batch may also incorporate the insoluble fraction from the fly ash. Precipitation of the heavy metal constituents in the soluble portion of the fly ash is preferably accomplished by raising the pH of the solution, most preferably above 10 by addition of alkali metal or alkaline earth metal hydroxides.