Page 48 - HUB-4 Magazine Issue 97

Aggregate Washing & Screening
Parnaby Cyclones Enhances Skip
Waste Processing at PSH Norwich
In 2025, Parnaby Cyclones installed a new skip
waste washing module for PSH Environmental
Ltd. Norwich, comprising a 6/30 (6’ diameter x
30’ long) Natural Medium Washer Barrel. The
module was designed to wash and separate
organics from inert materials within the 15–100
mm coarse fraction of skip waste, operating at a
feed rate of approximately 20–25 tonnes per
hour.
Following commissioning at PSH, the washer barrel module
quickly demonstrated its performance. Operating at a feed rate
of 20–25 TPH, the plant achieved clean, well-separated
products almost immediately.
The client, PSH, had already installed a <15 mm skip fines
washing and separation plant (15–20 TPH) supplied by
Parnaby Cyclones two years earlier. That system successfully
separates fine organic materials from inert fractions.
The success of the original installation prompted the owners of
PSH, Nigel, Martyn and Daniel Parker to further enhance their
processing capability by introducing the new washer barrel
module. The objective was to upgrade the larger particle size
fractions and maximise recovery of clean inert materials.
One of the immediate operational benefits was the release of
two picking station operatives, allowing them to be
redeployed to other duties around the site.
As with the earlier installation, Parnaby carried out float and
sink testing and grading analysis prior to installation and
commissioning. This work enabled the team to determine the
expected yield of inert materials and evaluate the efficiency of
separation between aggregates and organic waste.
Parnaby Cyclones has been designing and supplying washer
barrel systems for more than 50 years, traditionally for mineral
process and beneficiation applications. In recent years,
however, these modules have increasingly demonstrated their
effectiveness in a wide range of recycling and waste
processing applications, including scrap metal shredder light
fraction (SLF), MRF glass recovery, road sweepings, gully
waste, and construction and demolition (C&D) materials.
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www.hub-4.com March/April - Issue 97