B - Operations – Transporting – 07 – B
Patent
B - Operations, Transporting
07
B
209/97, 259/42.2
B07B 1/00 (2006.01) B07B 9/00 (2006.01) B07B 13/18 (2006.01)
Patent
CA 1220763
ABSTRACT OF THE DISCLOSURE Disclosed are differential rate screening processes and ap- paratuses for continuously screening undersize particles in different size classes to different degrees of incompletion to provide a product having a preselected distribution of particle sizes substantially different from the distribution of particle sizes in a feed of particulate material. An in- put stream of feed material is introduced onto a screening member having apertures of sufficient size to pass a plurali- ty of size classes, and is separated into at least a throughs stream and one other stream by causing undersize classes to pass through screen apertures and into a throughs stream in proportions relative to one another substantially different from the proportions of the same undersize classes relative to one another in the input stream. The overs, throughs or both from one rate screening member may be introduced as an input stream onto another rate screening member. A suffi- cient population of undersize particles are provided in each undersize class and differentials between relative propor- tions of undersize classes in an input stream and relative proportions of undersize classes in a throughs stream are controlled so as to provide a product having substantially the desired particle size distribution. Various means are provided for causing differentials between relative propor- tions of undersize classes in an input stream and relative proportions of undersize classes passing through a screen- ing member and into a throughs stream, and for controlling these differentials. An output stream from one rate screen- ing member may be blended with an output stream from another rate screening member and at least a portion of an output stream from one rate screening member may be recycled to a crusher and then sent to the same or a different rate screen- ing member.
425551
Hahn William F.
Mcadams Hiramie T.
Talley Robert L.
Gowling Lafleur Henderson Llp
Hahn William F.
LandOfFree
Differential rate particulate gradation screening and... does not yet have a rating. At this time, there are no reviews or comments for this patent.
If you have personal experience with Differential rate particulate gradation screening and..., we encourage you to share that experience with our LandOfFree.com community. Your opinion is very important and Differential rate particulate gradation screening and... will most certainly appreciate the feedback.
Profile ID: LFCA-PAI-O-1293805