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The key to smooth powder incorporation
The key to smooth powder incorporation
For powder/liquid mixing on a laboratory-scale, the FMX5 is a benchtop version of the production scale Flashmix and is ideal for R&D work, with a typical batch size of 10 litres, depending on viscosity. The FMX5 offers proven performance on a wide range of powders including gums (CMC, Guar, Gum Arabic, Pectin, Xanthan), sugars, flours, milk powder, Carbopol, Bentonite and many others across a range of industries. For larger scale powder dispersion, with powder incorporation rates of up to 15,000 kgs per
Dispersing powders into liquids and creating a consistent, homogeneous product, time after time, is one of the most difficult of all mixing tasks. Whether the need is to incorporate large volumes of powders or handle small amounts of critical components such as active ingredients, Silverson has a comprehensive range of products designed to provide the most efficient means of incorporating powders into liquids. Silverson can now provide customers with powder/liquid mixing advantages and solutions from
laboratory-scale to small and pilot scale through to larger scale production with the introduction of the new FMX10. This mixer has been specifically developed to bridge the gap between the laboratory scale FMX5 and the larger, production-scale Flashmix product range. The FMX10 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. The standard powder feed hopper has a 5 litre capacity. Different designs are available to assist with the flow of more cohesive powders. The mixer recirculates liquid from the vessel and powder is loaded into the stainless steel hopper. Once the powder feed valve is opened the high pumping action forces the powder into the high velocity liquid stream. The powder and liquid ingredients are introduced straight into the high shear zone of the mixer, and are instantaneously combined as they are subjected to intense hydraulic and mechanical shear. A brief period of recirculation results in an agglomerate-free, homogeneous dispersion in a matter of minutes.
44 JULY/AUGUST 2025 | FACTORY&HANDLINGSOLUTIONS
hour, Silverson offers the Flashmix. Unlike many other powder/liquid mixers which use vacuum to pull in powders, the Silverson Flashmix literally forces powder into the liquid stream. This allows it to disperse and hydrate large volumes of powders before they enter the mixing vessel, preventing the build-up of partially hydrated powder on the vessel wall which can be a problem when using conventional agitators. Both the FMX5 and FMX10 offer an accurate means of predicting the performance of the production scale Flashmix, making the scale-up process a simple task. The Flashmix can also be supplied with a powder suction hose attachment for powder incorporation, in place of the standard hopper. The hose is attached to the Flashmix via a specially modified powder inlet manifold that draws the powder up through the hose and into the vessel. This enables the machine to suck powders into the mix straight from their original containers, minimising handling requirements. This is particularly useful for free-flowing powders which are prone to dusting, for example Aerosil. With the use of either the standard Flashmix hopper or the hose attachment, problems occurring due to operator error, such as adding powders too quickly, can be effectively eliminated. With the Silverson Flashmix range, the mixer dictates the powder addition rate, so repeatability is assured and a consistent homogeneous product will be produced batch after batch. For mixing in the Chemical industry, Silverson offers another variation of the Flashmix, the FMX-CD.
This mixer has been specifically designed for applications in the chemical industry and aggressive chemical service. It can be integrated with bulk powder dispensing systems, e.g. Big Bags (FIBCs). The mixer can be configured further to suit specific customer requirements, with elastomers, valve and motor type being specified to suit individual applications. For hygienic powder/liquid mixing requirements, Ultra-Hygienic versions of both the FMX5
Laboratory powder/liquid mixer and small scale FMX10 are available. These models offer single or double mechanical sealing arrangements and are ideally suited for applications in the pharmaceutical, biotech, food, cosmetics and other “clean” industries.
Silverson
sales@silverson.co.uk
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