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19.02.2018 Space-saving silo cascade mixers

Ajax Equipment, Bolton, UK, has developed a high-volume, compact silo cascade mixer which provides a space-saving alternative to machines with conventional conical hoppers. It enabling batch powder processing in squat, square mixing containers in place of tall conventional conical hoppers, for plants where space is restricted. The mixer combines mass flow and intake recycling screw technology that minimises power consumption whilst providing efficient mixing. 
 
The Ajax silo cascade mixer uses vertical screws to elevate the powder, cascading it on the bed contents and down the hopper section. The recycling screws have a large entrainment diameter and a twin inlet scoop that reduce the headroom requirement of the hopper section, enabling relatively large volumes of solids to be held within the low-profile mixer. 
 
The recycling screws are fitted with variable pitch, varying diameter flights and have conical centre shafts. The recycling screw casings are fitted with a hinged inspection/access door on the sidewall of the mixer. The doors are equipped with safety switches that are interlocked with the drive motors. 
 
Ajax has recently supplied several multiple 5.5m3 silo cascade mixers for blending a plastic compound. These were designed for installation in an area rated as ATEX zone 22 (dust) with the internal part of the blenders designated as zone 21 (dust). The mixers also included two alternative discharge ports, each of which were required to empty the contents completely within five minutes. In addition, a number of replacement recycling screws were also supplied to replace unsuitable screws on 10t capacity mixers that had been sourced earlier from other suppliers. www.ajax.co.uk 
 
 
Two Ajax cascade mixers, each of 5.5m3 capacity: site rated ATEX zone 21 and internal zone 22
 

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