Patent · US Expired

Method for conditioning weakly to medium-active wastes

US4581163A · kind A · utility

17Cited by

6References

14Claims

0Family size

Assignee

Kraftwerk Union Aktiengesellschaft · DE

Inventors

Siegfried Meininger · Schongau, DE
Dietmar Bege · Erlangen, DE
Karl Friesner · Bamberg, DE

Key dates

Filing date	Feb 4, 1983
Grant date	Apr 8, 1986
Priority date	—
Expiry date	Feb 4, 2003

Classification

Technology area (CPC G)Physics
CPC primaryG21F9/36
WIPO fieldEngines, pumps, turbines
WIPO sectorMechanical engineering

Abstract

Method and apparatus for conditioning weakly to medium-active wastes through fused vitrification by means of electric electrodes for generating the melting heat. The wastes optionally with additive materials are filled into a cup-shaped melting crucible which contains at least two electrodes. The melting crucible is closed off at the top by a furnace hood which has current leads. Voltage is applied to the electrodes via the current leads until the melting crucible containing material to be melted has melted. The current leads are separated from the electrodes. The furnace hood is removed, and after the cooling down, the melting crucible is filled with inactive cement paste to produce a cover layer.

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