Patent · US Expired

Method for directly cooling fine-particle solid substances

US7003965B2 · kind B2 · utility

27Cited by

10References

23Claims

0Family size

Assignee

Kerr-McGee Pigments International GmbH · CH

Inventors

Gerhard Auer · Krefeld, DE
Dirk Weber · Basel, CH
Werner Schuy · Tönisvorst, DE
Frank Wittekopf · Tönisvorst, DE

Key dates

Filing date	Jul 4, 2002
Grant date	Feb 28, 2006
Priority date	—
Expiry date	Sep 30, 2022

Classification

Technology area (CPC C)Chemistry; Metallurgy
CPC primaryC01P2004/61
WIPO fieldBasic materials chemistry
WIPO sectorChemistry

Abstract

The invention relates to a method for directly cooling fine-particle, powdery solid substances by using a cooling medium provided in the form of low-boiling condensed gases or of cold gases obtained therefrom, whereupon bulk material packings are subsequently filled with these solid substances. The invention also relates to a device for directly cooling the fine-particle, powdery solid substances and to fine-particle, powdery solid substances, which are located inside bulk material packings and which, compared to air, have a lower oxygen content in the gas phase between the solid substance particles.

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