Hoppers & Silos
Sound solution Primasonics audiosonic acoustic cleaners are the sound solution to
ensure cement powder movement within silos and hoppers Primasonics acoustic cleaners are widely employed wherever
ash, dust and powders are generated, processed, stored or transported. This range of acoustic cleaners has been of tremendous benefit in both preventing material hang-up and ensuring maximum, continuous material flow in silos and hoppers. Indeed some of Primasonics most challenging but successful applications were within silos which contained dry materials such as cement. Primasonics have solved cement storage silo problems in over 40 countries worldwide. The two main problem areas within hoppers and silos are:- - Rat-holing – where the material builds up on the sidewalls causing severely reduced “funnel flow”, which also restricts the silo being used to its full storage capacity.
- Bridging – where the material bridges over the outlet area either severely restricting flow or stopping it completely. Irrespective as to whether the cement bulk storage facility is under 500 kg or over 30,000 kg capacity Primasonics audiosonic acoustic cleaners have eliminated both of these problems.
Typical examples range from small 20 tonne capacity internal pre-packing hoppers right up to 30,000 tonne capacity cement silos. Where the problem is ratholing with the material building up on the sidewalls, a low frequency, larger Primasonics acoustic cleaner is mounted on top of each silo to dislodge and thereafter, eliminate the build up. These units can be located at any position on top of the silo, as sound waves travel at over 344 metres per second and in a 360° radius. Generally speaking they are mounted on top of an existing inspection hatch, thus installation is simple and inexpensive.
Moving on to silo and hopper discharge, in such applications one of the smaller Primasonics Audiosonic Acoustic Cleaners with higher frequencies is employed. The higher the frequency the shorter the wavelength and so all the acoustic power created by the Wave Generator is concentrated over a much shorter range – say between 1 and 5 m. Therefore a higher frequency Primasonics Audiosonic Acoustic Cleaner mounted just above the discharge will prevent material bridging and ensure even material
MORE OPTIONS IN LEVEL CONTROL
Gravity Fed Silos Transcubes
Liquid Storage Tanks Transportation Tanks
Bunded Storage Tanks
Tank and Silo specialist For further information please contact: ATI TANK HIRE LIMITED
Yarmouth Business Park,Thamesfield Way,
off Pasteur Road,Great Yarmouth,Norfolk,NR31 0DW TEL: (01493)441 747 FAX: (01493)442 717 MOB: 07990 554825 Web:
www.atitanks.co.uk
40 Solids & Bulk Handling • March 2011
Our new Ultra range combine multiple control functions in a single unit for tank linearisation or volumetric conversion, pump control, differential level or open channel flow. Reduce unseen operating costs in solids handling, waste water and processing environments!
Solids or liquids level measurement Linearisation of tank shapes Open channel flow measurement and data logging
Extensive pump control options ATEX approved transducers Simple set up
Of course, if you just want to control levels to 50m (and options of <1mm accuracy), our ingenious controls will do exactly that.
Pulsar Process Measurement Ltd.,
Malvern, Worcs WR14 1JJ UK Tel: +44 (0) 1684 891371 e:
info@pulsar-pm.com www.pulsar-pm.com
www.solidsandbulk.co.uk
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