Patent · US Active

Method for the production of free-flowing additives

US7723545B2 · kind B2 · utility

0Cited by

4References

14Claims

0Family size

Assignee

RASCHIG GMBH · DE

Inventors

Steffen Denzinger · Mainz, DE
Frank Harréus · Weinheim, DE
Alexander Schmitt · Mountain View, US

Key dates

Filing date	Oct 23, 2008
Grant date	May 25, 2010
Priority date	—
Expiry date	Oct 23, 2028

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB01J2/22
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

The present invention provides a method for the production of free-flowing additive compounds that comprises the steps of preparation of a particulate additive compound and storage of a mass of the particulate additive compound at a surface pressure of at least 30 g/cm2 until the mass of additive compound is baked together. Then follows the crushing of the baked-together mass of the additive compound into a crushed particulate additive compound and the sieving of the crushed particulate additive compound, whereby particles of a size in excess of 4.0 mm and particles of a size of less than 0.1 mm are separated from the crushed particulate additive compound such that a fraction containing a free-flowing additive compound with long-term stability of particle sizes is obtained.

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