Patent · US Expired

Process for conditioning contaminated waste through cementing

US4652404A · kind A · utility

7Cited by

9References

3Claims

0Family size

Assignee

Kernforschungsanlage Lulich Gesellschaft mit beschrankter Haftung · DE

Inventors

Heinz Mallek · Linnich, DE
Egon Zange · Düren, DE
Wolfgang Schlenter · Kreuzau, DE
Karl Trumper · Kreuzau, DE
Siegfried Meininger · Schongau, DE
Dietmar Bege · Erlangen, DE

Key dates

Filing date	Nov 30, 1984
Grant date	Mar 24, 1987
Priority date	—
Expiry date	Nov 30, 2004

Classification

Technology area (CPC G)Physics
CPC primaryG21F9/304
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

A process for the conditioning of contaminated waste through cementing. Dry waste is cemented, especially waste which is recovered as ashes subsequent to the combustion of burnable waste, or as a dry residue during the treatment of sludge. In the process there is added to the dry waste a cement component not less than about 50% by weight of the weight of the waste, wherein subsequent to the admixing of the waste with the cement, there is mixed in water to the cement in a slightly excess stoichiometric ratio of effecting the setting, and the mixture is compacted under pressure and then encased.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.