Patent · US Expired

Method of disposal or temporary storage of waste material

US4468154A · kind A · utility

5Cited by

4References

10Claims

0Family size

Assignee

Preussag Aktiengesellschaft Metall

Inventors

Klaus Janssen · Essen, DE
Jurgen Meier · Leverkusen, DE
Siegfried Frank · Bergstadt Bad Grund, DE

Key dates

Filing date	Nov 13, 1981
Grant date	Aug 28, 1984
Priority date	—
Expiry date	Nov 13, 2001

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB65G53/30
WIPO fieldEnvironmental technology
WIPO sectorChemistry

Abstract

A method of disposal or temporary storage of fine particulate solid waste material or a mixture of such solid material with liquid including pumping the solid material entrained in liquid through a pipeline by means of a piston pump into a natural or artificial dump space above ground or below ground. To pump fine grained waste materials, for example dusty or paste-like and sludge-like waste materials, without incurring problems regarding the entrainment liquid and to prevent, in the case of underground storage, the production of a geologically insufficiently stable packing in a natural or artificial cavity, a high-consistency mixture containing less than 20% by weight of liquid, which is generally water, is pumped into the space by means of the piston pump.

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