Venturi with 7° divergent angle

Venturi Venturi with 15° divergent angle Venturi with 7° divergent angle... 

In order to minimise air separation from the venturi walls the unit was designed with a 3.3 1 area expansion ratio with a 6° included angle on the divergent side. The implication of this limitation is that a second stage of processing is likely to be necessary to reclaim the smaller rubber fraction lost to the filters in the main venturi separator. The primary rubber crumb product has a particle size range of approximately 6 mm. The testing with the venturi separator effectively produced a main product of -6, +1 mm. The fraction below 1 mm was lost to the filters with the liberated fabric. However, with the fabric teased away from the steel inclusions it is expected that a simple cyclone could be tuned to recover the majority of the 1 mm rubber crumb. 

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