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Sweet success for new vibratory equipment division

A Robson Handling Technology product story
Edited by the Engineeringtalk editorial team Nov 27, 2001

A £700,000 project by handling specialist Geo Robson and Co at British Sugar's Newark factory has increased granulated screening capacity and accelerated the loading of bulk tankers.

A £700,000 project by handling specialist Geo Robson and Co at British Sugar's Newark factory has increased granulated screening capacity and accelerated the loading of bulk tankers.

Robson was responsible for installing the plant's three vibratory screens some years ago, but the screen it has just added is the first to be manufactured for British Sugar by the company's new vibratory equipment division.

Like its fellows, the new screen is powered by unbalanced motors and has an 80tph capacity.

It separates the feed sugar into three fractions; medium granulated (oversize crystals that require further processing) and two finished products - cut granulated and caster.

Robson has integrated the outputs of the new screen into the existing handling system with a combination of new, modified and repositioned equipment.

Caster and medium granulated are each delivered into their existing feed systems, and Robson has up rated the facilities for the medium product by increasing the capacity of two elevators and two screw conveyors to 80tph.

Cut granulated is routed directly to the bulk out-loading system, travelling via a new chute and an existing elevator into a sequence of five 'piggy-backed' screws (one of which is new).

Completing the route is a new 80tph elevator that lifts the product into the out-loading storage bin.

Robson has increased the bin's capacity from 20t to 30t - which entailed raising the roof of the building by 7 metres - and fitting a new delivery spout.

As well as accommodating the output from the new screen, the modifications make it possible for a tanker to be filled from a single charge of the bin.

Other enhancements include a new strain gauge weighing system in the bin, and the introduction of a tanker weighbridge including all sub-floor civil work.

To complete the project, Robson has established a new link with the granulated storage silos.

Sugar from the existing delivery elevator now flows through an 80tph screw conveyor with three outlets - to the screens, or into either of two bulk out-loading bins.

The new screen and associated equipment were installed during the seven-day Easter shutdown to avoid interrupting production, and the rest of the work was carried out during the following six weeks.

Newark is just one of the British Sugar sites where Robson is working during 2001.

The ?3 million programme also includes projects at Bury St Edmunds, Wissington and York.

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