Solutions · Nut Storage
Nuts are high-value, oil-rich, and allergen-relevant ingredients – from whole almonds and hazelnuts to nut flours. PW Silo Systems designs aluminum and stainless steel silos with mass-flow discharge and clear product separation for confectionery, bakery, snack, and food producers.
Nut Storage at a Glance
A nut silo stores whole, chopped, or ground nuts and nut ingredients close to production – for chocolate, confectionery, bakery, cereals, or snacks. It protects them from moisture, pests, and contamination and feeds them in a controlled way to dosing and mixing.
Nuts are allergens, and their oil content makes them sensitive to long storage times. Whole nuts must be handled gently, while nut flours behave like other fine powders. PW Silo Systems designs the silo and its discharge around your specific product.
Why Nuts Are Demanding
Nuts are among the most valuable ingredients in a food plant. Every challenge below affects quality, allergen safety, and uptime.
Tree nuts are major allergens. Almonds, hazelnuts, or cashews must not get into other products.
Nuts are rich in oil. Long storage times affect their quality.
In coated carbon steel silos, flaking paint and steel particles can end up in the nut.
Almond and coconut flour are fine, oil-containing powders that tend to bridge and cake.
Fine nut dust is combustible. Filling and conveying release dust into the silo and its surroundings.
In funnel flow, nuts can stay in the silo for a long time while fresh product passes through the center.
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 nut silo depends on your product, your process, your cleaning requirements, and your site – we review it with you.
Your Nut 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 moreNuts & Nut Ingredients
All nut products below are on our list of bulk materials tested in our lab. For other nuts, we review your material data with you before designing the silo.
Tested in our lab
Almond flour, ground almonds, almond meal
Almond flour is on our list of materials tested in our lab. Discharge aids are planned for its fine, oil-containing texture.
Tested in our lab
Coconut flour
Coconut flour is on our list of materials tested in our lab. It is fine and absorbent – discharge is designed for its flow behavior.
Tested in our lab
Almonds, whole almonds, almond kernels
Almonds are used whole, sliced, or chopped in confectionery and bakery. A dedicated silo keeps this allergen separate.
Tested in our lab
Hazelnuts, filberts
Hazelnuts are a key ingredient for chocolate and spreads. Storage is designed for their round kernels.
Tested in our lab
Walnuts, walnut kernels
Walnut kernels are fragile and oil-rich. Silo and discharge are designed with you for gentle handling.
Tested in our lab
Cashews, cashew kernels
Cashews are used in snacks and plant-based products. A dedicated silo keeps them apart from other products.
Tested in our lab
Pistachios, pistachio kernels
Pistachios are a high-value specialty ingredient. First-in, first-out discharge supports stock rotation.
Tested in our lab
Coconut, desiccated coconut, coconut flakes
Coconut is on our tested list. Desiccated coconut is light and oil-rich and can bridge – discharge aids are planned accordingly.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Nut Check
Type in your nuts or any other bulk material to see whether they have already been tested in our lab. The list covers 287 bulk materials.
Try: , ,
Service in the U.S.
With more than 40 years of experience in silo engineering, we support your nut 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 nuts and nut ingredients in silos.
Dry, free-flowing nuts and nut ingredients can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Peanuts, pecans, macadamia, and Brazil nuts we review with you based on your material data.
Both. Aluminum and stainless steel silos are widely used for nut 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 nut. That is why we build silos exclusively in aluminum and stainless steel.
We recommend a dedicated silo per nut type – or PW StoreLine multi-compartment silos that keep different products separate in one silo.
A closed silo in aluminum or stainless steel protects the product, and concentric mass-flow discharge makes sure the oldest product leaves the silo first. No nuts are left behind in dead zones where they could age.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your nut 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 nut 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 nut 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.
