Patent · US Active

Jet mill and method for operation of a jet mill

US9010666B2 · kind B2 · utility

3Cited by

0References

10Claims

0Family size

Assignees

NETZSCH Trockenmahltechnik GmbH · DE
Roland Nied · DE

Inventors

Roland Nied · Neusäß, DE
Hermann Sickel · Karlstadt, DE
Dimitrios Makrakis · Hof, DE

Key dates

Filing date	May 25, 2012
Grant date	Apr 21, 2015
Priority date	—
Expiry date	Apr 25, 2033

Classification

Technology area (CPC B)Performing Operations; Transporting
CPC primaryB02C23/18
WIPO fieldChemical engineering
WIPO sectorChemistry

Abstract

A method for the operation of a jet mill with an integrated dynamic air classifier, wherein particles are fed as grinding stock into a grinding chamber of the jet mill and are ground there into ultra-fine particles by grinding, in that superheated steam or technical gases is/are used as working stock, wherein at least one surface-active additive is fed to the grinding stock for stabilization of the generated ultra-fine particles. A jet mill for performing this method, having an integrated dynamic air classifier, and a grinding chamber into which superheated steam or technical gases are provided as working stock via working stock feed devices as grinding stock and in which the grinding stock is ground into ultra-fine particles by grinding, and wherein feeding devices for at least one surface-active additive for stabilization of the generated ultra-fine particles are provided.

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