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COVER STORY
NEW SMALL-SCALE IN-LINE MIXERS AND POWDER/ LIQUID MIXERS FROM SILVERSON MACHINES
Silverson Machines is launching new mixer variants at this year's CHEMUK show in May
S
ilverson’s new mixers have been developed in response to demand for small-scale In-Line mixers and powder/liquid mixers that bridge the gap between the laboratory scale mixers and production scale mixers currently available in the Silverson product range. For use across all industries, these new options will be particularly useful for pharmaceutical applications.
The new mixer range includes “Ultra Hygienic” specification models, a unit suitable for higher viscosity mixes and a designated Powder/Liquid mixer, the FMX10 (pictured). These models complement the different types of laboratory and production models already available from Silverson and offer customers more options in terms of batch sizes and processing requirements. The 150 and 200 UHS In-Lines are designed for Ultra Hygienic applications typically encountered in the pharmaceutical and biotech industries, where the smallest production scale mixers may be too large, but laboratory equipment doesn’t offer sufficient capacity. These mixers are built to the same high specification as production scale UHS mixers and can be supplied with Silverson- designed hygienic single mechanical shaft seals, which can be converted to hygienic double mechanical shaft seals suitable for pressurised flush. They have a crevice-free construction and are designed for Clean-In- Place (CIP) and Sterilise-In-Place (SIP) operation. Ideal for batches of up to 50 litres they can also be supplied with multi-stage rotor/stator workheads, offering intense yet targeted high shear capability. As with all Silverson UHS models, they can be supplied with data dossiers documentation packages conforming to all regulatory standards, for example cGMP and FDA. For small scale manufacturing of higher viscosity products, Silverson has developed the UHS-HV, an In-Line mixer which matches the capabilities of the production scale Silverson HV In-Line mixers. It incorporates a unique and innovative “pumping rotor” design that substantially increases the mixer’s self-pumping capacity, ideal for processing higher viscosity products.
12 MARCH 2024 | PROCESS & CONTROL
High flow rates, typically around 6,500 litres/hour are maintained as viscosity rises, often eliminating the need for an additional feed pump when processing many higher viscosity products such as creams, ointments, sauces and slurries. A range of motor options is available, including high speed, which allows the mixer to run at 9,000rpm. This gives the mixer more power to continually recirculate higher viscosity products in the vessel. Other motor options include stainless steel and Flameproof models. The new FMX10 bridges the gap between the laboratory scale FMX5 and the larger Flashmix product range. It provides a simple, effective and hygienic means of powder/liquid mixing on a small scale, with a batch size of up to 50 litres, depending on viscosity. Featuring the same pumping rotor design as the HV model, the FMX10 is able to process higher viscosity mixes, and the option of a high speed motor, capable of 9,000rpm, and Flameproof specification makes this model even more versatile.
In operation, the mixer recirculates liquid from the vessel and powder is loaded into the stainless steel hopper. Once the powder feed valve is opened the powder is drawn into the high velocity liquid stream, with the ingredients coming into contact with each other just prior to the mixer’s high shear rotor/stator workhead. A brief period of recirculation results in an agglomerate-free, homogeneous dispersion in a matter of minutes. The standard powder feed hopper has a 5 litre capacity. Different designs are available to assist with the flow of more cohesive powders.
Offering proven performance on a wide range of powders including Pectin, Guar Gum, Gelatine and Xanthan gum, as well as sugars, flours, milk powder etc., the introduction of this new Powder/Liquid mixer to the Silverson product ranges opens up the possibility of many more applications for small scale production.
Each of these new mixers is available with
IP-rated motors and as a Flameproof model, making them suitable for many applications that cannot be carried out with
standard Laboratory mixers. In addition, further
increasing the versatility and flexibility of the mixers, any of the mixers in this range can be supplied with a Vessel Package. The Vessel package
comprises a 50 litre
vessel, stand, valve and pipework. Conversion kits are also available allowing the UHS model to be upgraded to a UHS-HV and an FM10.
On the Silverson stand at CHEMUK, visitors will also see Laboratory mixers and larger scale in-tank high shear mixers in action. You can find Silverson Machines on stand J56 at the show.
If you'd like more information on the new mixers being launched, or would like to register your interest, please contact Silverson today.
Silverson Machines
sales@silverson.co.uk www.silverson.co.uk
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