James K Downs

US Patent:

54664071, Nov 14, 1995

Filed:

Feb 10, 1994

Appl. No.:

8/195295

Inventors:

James J. Downs - Narberth PA
William A. Roberts - Berwyn PA

Assignee:

Rolite, Inc. - Wayne PA

International Classification:

B29B 908
B29C 4302
B29C 6702

US Classification:

264115

Abstract:

Residue produced by incineration of commercial, industrial or municipal waste is treated to remove oversize material and ferrous materials. The moisture content of the untreated residue is adjusted, and the residue is mixed with Portland cement to partially aggregate the residue into a free-flowing, granular material containing no more than about five percent by weight fines and having a hydraulic conductivity of at least about 0. 001 cm/sec after curing for 24 hours. The treated residue can be used to form a gas-venting layer for a landfill, and retains its good hydraulic conductivity as it cures into a cohesive mass, such that leaching of hazardous materials is reduced.

US Patent:

52864308, Feb 15, 1994

Filed:

May 1, 1992

Appl. No.:

7/877329

Inventors:

James J. Downs - Narberth PA
William A. Roberts - Berwyn PA

Assignee:

Rolite, Inc. - PA

International Classification:

C04B 702

US Classification:

264112

Abstract:

Residue produced by incineration of commercial, industrial or municipal waste is treated to remove oversize material and ferrous materials. The moisture content of the untreated residue is adjusted, and the residue is mixed with Portland cement to partially aggregate the residue into a free-flowing, granular material containing no more than about five percent by weight fines and having a hydraulic conductivity of at least about 0. 001 cm/sec after curing for 24 hours. The treated residue can be used to form a gas-venting layer for a landfill, and retains its good hydraulic conductivity as it cures into a cohesive mass, such that leaching of hazardous materials is reduced.