EP 0250747 A3 19890524 - METHOD OF AND DEVICE FOR AIR SIFTING
Title (en)
METHOD OF AND DEVICE FOR AIR SIFTING
Publication
Application
Priority
DE 3621221 A 19860625
Abstract (en)
[origin: US4869786A] The invention relates to a process and to an air classifier for the separation of classifying material into coarse material and fine material. Known air classifiers suffer from considerable deficiencies with regards to the throughput and the separation efficiency. To avoid this, the invention provides for the performance of a separate reclassification, which takes place in the same way as the pre-classification, whilst incorporating mechanical centrifugal rejection of coarse material particles, particularly through the impact ledges of a centrifuge basket.
IPC 1-7
IPC 8 full level
B07B 7/083 (2006.01)
CPC (source: EP US)
B07B 7/083 (2013.01 - EP US)
Citation (search report)
- DE 3231526 A1 19840301 - PKS ENGINEERING [DE]
- DE 3038625 A1 19820519 - PFEIFFER FA CHRISTIAN [DE]
- DE 1757582 C2 19760311
- US 4528091 A 19850709 - NIED ROLAND [DE], et al
Designated contracting state (EPC)
AT BE DE ES FR GB IT NL
DOCDB simple family (publication)
EP 0250747 A2 19880107; EP 0250747 A3 19890524; EP 0250747 B1 19921202; AT E82876 T1 19921215; DE 3621221 A1 19880114; DE 3621221 C2 19880922; DE 3782859 D1 19930114; ES 2036541 T3 19930601; US 4869786 A 19890926
DOCDB simple family (application)
EP 87105736 A 19870416; AT 87105736 T 19870416; DE 3621221 A 19860625; DE 3782859 T 19870416; ES 87105736 T 19870416; US 5525587 A 19870529