IPCO – High capacity pastillation of low viscosity suspension products

IPCO expands Rotoform range with high yield, low maintenance XG model for granulation of suspensions

Chemical processing systems manufacturer IPCO has announced the introduction of the Rotoform XG, a high capacity pastillation system offering superior handling of low viscosity melts containing solid particles, and significantly easier cleaning and maintenance.

Designed for applications such as sulphur bentonite, NPK and other fertilizers as well as urea mixes, the new model can convert solid-containing product melts into consistent, high quality pastilles from 2-4 mm diameter. The XG is also able to process catalysts, wax suspensions and other sedimenting products, and can handle melts containing solid additives or contaminant particles up to 200 μm in size.

Offering twice the throughput rates of the standard Rotoform 4G model, the XG is capable of processing slurries with viscosities lower than 100 mPas.

The design follows the same basic principle that has seen more than 2500 Rotoform installations completed since the process was introduced in the late 1970s. Liquid product is delivered to a stator then deposited in drop form via a rotating perforated outer shell onto a continuously running steel cooling belt.

However, the XG incorporates a number of productivity-enhancing innovations including an innovative sliding base frame that allows the whole Rotoform unit to be pulled out for easy access, and a ‘floating’ stator that can be raised away from the outer shell for cleaning. An all-new bearing system with fewer parts and increased wear resistance further reduces maintenance requirements.

“This is a major development in terms of handling slurry and abrasive products,” explains Ulrich Nanz, Global Product Manager, Chemicals, at IPCO. “The high capacity of the system maximises productivity, while easier cleaning and maintenance equates to lower costs.

The speed of the Rotoform is synchronised with that of the belt to allow a gentle deposition of the liquid droplets. Heat released during cooling and solidification is transferred via the steel belt to cooling water sprayed underneath, so there is no risk of cross-contamination and the water can be cooled and re-used.

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