Solutions · Fruit Ingredient Storage
Fruit powders are fine, hygroscopic, and often sticky – dried fruits range from free-flowing pieces to soft, sticky fruit. PW Silo Systems reviews your fruit ingredient with you and designs aluminum and stainless steel silos with the right discharge for it.
Fruit Ingredient Storage at a Glance
A fruit powder silo stores dried fruit powders and fruit pieces close to production – for cereals, bakery, confectionery, beverages, or dairy products. It protects them from moisture and contamination and feeds them in a controlled way to dosing and mixing.
Fruit powders attract moisture and tend to bridge and cake. Soft dried fruits such as dates or prunes are sticky and do not flow like typical free-flowing bulk solids. That is why silo geometry and discharge are designed around your specific fruit ingredient.
Why Fruit Ingredients Are Demanding
Fruit ingredients are valuable and sensitive. Their flow behavior decides how they can be stored.
Fruit powders attract moisture from the air and can cake in the silo.
Dates, prunes, and raisins are soft and can stick together.
In coated carbon steel silos, flaking paint and steel particles can end up in the fruit powder.
Fine fruit powder dust is combustible. Filling and conveying release dust into the silo and its surroundings.
In funnel flow, fruit powder can stay in the silo for a long time while fresh product passes through the center.
Apple, strawberry, and raspberry powder must not be mixed by accident.
Silo Materials
Aluminum and stainless steel silos are widely used for flour, sugar, starch, and other food ingredients. Both materials offer high corrosion resistance, good hygiene, and a long service life.
Carbon steel is not an option for us: its coating is the only protection against corrosion. Once it wears, paint particles and steel can get into the product. Which of our two materials fits your fruit powder silo depends on your product, your process, your cleaning requirements, and your site – we review it with you.
Your Fruit Powder Silo System
Silo, discharge, blending, filtration, and safety equipment are engineered as one system. That means fewer interfaces for your team and components that are designed to work together.
Storage
Concentric mass-flow discharge without asymmetric flow zones – as standard, site-assembled, indoor, or multi-compartment silos.
Learn moreBlending
Gravity blending and homogenizing with four technologies, including PW ConeBlend with a hopper that is quick to clean.
Learn moreDischarge
Air fluidization for uniform discharge of poorly flowing products – prevents bridging and can be retrofitted to existing silos.
Learn moreDischarge
Vibration from unbalanced motors breaks up cohesive forces, resolves caking, and keeps the outlet clear.
Learn moreFiltration
Dust separation during filling and conveying, in a hygienic design for the food industry.
Learn moreSafety & Monitoring
Rupture discs or explosion vents for combustible dust, level measurement for reliable monitoring of the silo content.
Learn moreFruit Powders & Dried Fruit
All fruit ingredients below are on our list of bulk materials tested in our lab. For other fruit ingredients, we review your material data with you before designing the silo.
Tested in our lab
Apple powder, dried apple powder
Apple powder is fine and hygroscopic. Discharge aids are planned for its tendency to cake.
Tested in our lab
Strawberry powder, freeze-dried strawberry powder
Strawberry powder is a high-value color and flavor ingredient. A closed silo protects it from moisture.
Tested in our lab
Raspberry powder, freeze-dried raspberry powder
Raspberry powder is fine and sensitive to moisture. Dedicated storage keeps fruit types separate.
Tested in our lab
Raisins, sultanas
Raisins are soft and can stick together. Silo outlet and discharge are designed for their flow behavior.
Tested in our lab
Dates, date pieces
Dates are on our tested list. They are sticky – the silo design depends on the product form and moisture.
Tested in our lab
Prunes, dried plums
Prunes are on our tested list. They are soft and sticky – discharge is designed for their flow behavior.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Material Check
Type in your fruit ingredient or any other bulk material to see whether it has already been tested in our lab. The list covers 287 bulk materials.
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Service in the U.S.
With more than 40 years of experience in silo engineering, we support your fruit powder silo project from the first design discussion to commissioning. We deliver to every U.S. state and install with our own qualified personnel.
FAQ
Answers to the questions plant managers, engineers, and buyers ask most often about storing fruit powders and dried fruit in silos.
Fruit powders and dried fruits can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Other fruit powders and dried fruits we review with you based on your material data.
Yes. Dates, prunes, and raisins are on our tested list. Because soft, sticky dried fruits do not flow like typical bulk solids, silo geometry, outlet, and discharge aids are designed around your product form, moisture, and process.
A closed silo protects the powder from outside moisture. Discharge aids such as PW SpeedBlow air fluidization and bin activators prevent bridging and keep the outlet clear. The right combination depends on your powder.
Both. Aluminum and stainless steel silos are widely used for fruit powder and other food ingredients because they offer high corrosion resistance, good hygiene, and a long service life. Which material fits your project depends on your product, your process, your cleaning requirements, and your site. We review the options with you.
In a carbon steel silo, the coating is the only protection against corrosion. If it wears or flakes off, paint particles and steel can end up in your fruit powder. That is why we build silos exclusively in aluminum and stainless steel.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your fruit powder leaves the silo in the order it came in (first in, first out), and no product is left behind in dead zones where it could age or cake. Our PW StoreLine silos are designed for concentric mass-flow discharge without asymmetric flow zones.
Fine fruit powder dust is combustible, and many bulk solids carry an explosion risk. For combustible bulk solids we supply explosion-protected silos designed in accordance with applicable codes and regulations. Venting devices – rupture discs or explosion vents – are selected for your silo, your product, and your application. Integrated filters and dust collectors reduce dust during filling and conveying.
Hygiene starts with the materials: aluminum and stainless steel offer good hygiene and corrosion resistance. In addition, our flat-roof designs support high cleanliness standards, PW SpeedBlow uses high air flow for cleaning, and the PW ConeBlend blending silo has a hopper that is quick and easy to clean – well suited to frequent product changes.
The right size depends on your daily consumption, delivery intervals, the number of products, and the space available at your site. PW StoreLine silos are available in a wide range of sizes and diameters, and silos too large for road transport are assembled on site. We size the system with you – without oversized investment.
Yes. We deliver to every U.S. state and support your project with silo transport, field assembly, silo installation and supervision, and site relocation of existing systems.
Very likely. Our silo systems are designed for nearly all free-flowing, granular, and powdered bulk solids. Send us your material details – kernel size, moisture, and how the product is filled and discharged – and we will review the right storage solution with you.
Tell us about your products, required storage capacity, how the silo is filled and discharged, and your site conditions. Based on this, we work out the material, silo type, and configuration with you and send you a detailed quote.
Your Project
Whether you need a single fruit powder silo, several silos for different products, or a complete system with blending and discharge, tell us about your requirements. We'll develop a solution that fits your product, your process, and your site.
Send a Request NowWhat Happens Next
Tell us about your bulk material, your process, and your site conditions.
We work with you on material, silo type, and configuration – based on a bulk material analysis if needed.
You receive a custom-engineered solution with a detailed quote.
