Patent · US Expired

Process for conveying granular solids

US6666629B2 · kind B2 · utility

9Cited by

10References

6Claims

0Family size

Assignee

Outokumpu Oyj · FI

Inventors

Martin Hirsch · Friedrichsdorf, DE
Stuart Sneyd · Perth, AU
Lothar Formanek · Frankfurt am Main, DE

Key dates

Filing date	Apr 2, 2002
Grant date	Dec 23, 2003
Priority date	—
Expiry date	Apr 2, 2022

Classification

Technology area (CPC Y)Emerging Cross-Sectional Technologies
CPC primaryY02P10/134
WIPO fieldMaterials, metallurgy
WIPO sectorChemistry

Abstract

A process of continuously conveying granular solids from a first zone with a pressure of 4 to 16 bar through a descending line and via an ascending line to a second zone with a pressure which is lower than in the first zone by 3 to 15 bar, by means of a gaseous medium. To ensure that the pressure between two regions can be reduced at low cost and with little maintenance effort when continuously conveying granular solids, a gaseous medium is injected into a tube through an upwardly directed nozzle at the point where the granular solids are conveyed through a descending line into an ascending line.

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