APPARATUS AND METHOD FOR DETERMINING THE TRANSPORT BEHAVIOUR IN THE PNEUMATIC TRANSPORT OF GRANULAR MATERIALS
The invention relates to a method of determining the transport behaviour in the pneumatic transport of granular materials, in which (A) the sample of granular material is introduced into a feed chute, (B) the sample of granular material is, after the feed chute, introduced via an injector into a regulated stream of air, (C) the sample of granular material flows through a transport section and (D) the sample of granular material is measured in a laser light scattering spectrometer, wherein in step (B) the sample of granular material is introduced via a Venturi injector. The apparatus for carrying out the method comprises a feed chute for introduction of granular materials into the transport section, a feed chute for introduction of unstressed granular materials into the laser light scattering spectrometer, an air flow regulating valve, a Venturi injector, a transport section and a laser light scattering spectrometer ( 4 ).
1 . Method of determining the transport behaviour in the pneumatic transport of granular materials, in which
(A) the sample of granular material is introduced into a feed chute,
(B) the sample of granular material is, after the feed chute, introduced via an injector into a regulated stream of air,
(C) the sample of granular material flows through a transport section and
(D) the sample of granular material is measured in a laser light scattering spectrometer,
characterized in that in step (B) the sample of granular material is introduced via a Venturi injector.
2 . Apparatus for carrying out the method according to claim 1 , comprising
a feed chute ( 1 ) for introduction of granular materials into the transport section,
a feed chute ( 2 ) for introduction of unstressed granular materials into the laser light scattering spectrometer,
an air flow regulating valve ( 5 ),
a Venturi injector ( 3 ),
a transport section ( 7 ) and
a laser light scattering spectrometer ( 4 ).