Hub issue-24
23/1/13
14:41
Page 47
Storage & Handling Feature
Raw material silo
Once the CC is processed, the GCC is then pneumatically conveyed via a 168Ø conveying line to the top of the 12.5Ø x 30m high silos; at which point it is diverted to either of the preselected silos. A dense phase system was selected for this task, and although new to the client (traditionally they had used dilute phase), the system has proved successful in conveying the product with minimum velocity & quick cycle times typically 45 seconds to convey 2.2Te over a total conveying line of ~75m. Complete feed back to the client's plant room for both the compressors / dryer & the conveying system is maintained via Profibus interfacing.
Finished product silo roofs
Raw material
Each silo is equipped with a high capacity, fan assisted, dust plant to ensure all introduced dust laden air is safely managed with only pre-filtered air being released to atmosphere. With each of these silos having a working capacity of ~2500Te stock inventory is maintained via a dual system of weigh indication & continuous level devices giving a continuous feedback to the client plant room via 4-20mA signalling.
To ensure the 2500Te of stored product discharges freely, the whole of the silo cone has been fitted out with air slides & externally piped to 1 of 3 independent ring mains, thus ensuring any area within the cone can be aerated as and when required. In addition, each silo aeration system is being fed by its own dedicated low pressure, high volume blower unit. Each of these blowers is enclosed within their own acoustic cabinet to further reduce on noise pollution. Once the 2600m3 silos have received the processed material, the product is discharged into 1 of 2 407Ø high capacity, heavy duty designed screw conveyors which in turn discharge, via a SN7000 series dust free loading bellows, into road tankers for onward shipment to client. For further information or design assistance in powder &/or granular material storage & conveying contact: SN Engineering. Tel: +44 0 1452 725210 or visit our websites www.sneng.co.uk or www.scutti.co.uk www.hub-4.com/directory/14089
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