Powder classifying device
US9415421B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Oct 14, 2011 |
| Grant date | Aug 16, 2016 |
| Priority date | — |
| Expiry date | Apr 13, 2032 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB07B11/06
- WIPO fieldChemical engineering
- WIPO sectorChemistry
Abstract
A powder classifying device includes a plurality of powder classifiers that impart a whirling motion to powder with whirling gas streams to classify the powder into coarse powder and fine powder, a gas supply source that supplies the plurality of powder classifiers with gas for generating the whirling gas stream, a powder supplier that supplies the plurality of powder classifiers with powder having a particle size distribution, a fine powder collecting section that collects fine powder classified by each of the plurality of powder classifiers, a coarse powder recovery section that recovers coarse powder classified by each of the plurality of powder classifiers, and a controller that controls flow rates of gases supplied to the plurality of powder classifiers so that a classification point is substantially equal among the plurality of powder classifiers.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.