At the heart of the Sandvik Rotoform system is a special drop depositor – the Rotoform itself – which feeds droplets of molten product onto a continuously running steel belt. This is cooled by water from the underside, rapidly solidifying the product. The droplets are discharged in the form of dry, uniform, free flowing and dust-free pastilles. It is a highly flexible process capable of handling molten products at temperatures of up to 320 ºC and viscosities up to 50,000 mPas. Depending on the system used, pastilles can be produced in diameters ranging from as small as 1 mm right up to 30 mm. Another major benefit to growing numbers of users is that the system is environmen-tally friendly. There is no contact between cooling water and the product being processed, which means no risk of cross contamination, while fast cooling times mean little or no exchange of gases, vapour or oxygen between chemical product and the surrounding atmosphere. The Rotoform 3000 is the standard unit. However, some oil and gas refineries need higher capacity solutions and it was to meet this need that the HS model was developed. Through the use of a bigger diameter shell Sandvik has been able to produce a system that delivers up to twice the throughput of a standard Rotoform. All Rotoform types are also available for demonstration and tests on customers’ own products.
Hall 9, Booth 146
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