Solutions · Wood Flour & Wood Dust Storage
Wood flour and wood dust are light, fibrous, and combustible – they bridge, dust, and need a clear safety concept. PW Silo Systems designs aluminum and stainless steel silos for wood flour, wood dust, and WPC compound with you – with the right discharge, dust collection, and explosion protection.
Wood Flour Storage at a Glance
A wood flour silo stores wood flour, wood dust, or related products close to production – for wood-plastic composites (WPC), plastics compounding, particleboard and panels, pellets, adhesives, or other industrial processes. It keeps the product dry and contained and feeds it in a controlled way to dosing and mixing.
Wood flour and wood dust have a low bulk density, and their fibrous particles interlock and build bridges. Wood dust is combustible. Silo geometry, discharge aids, dust collection, and explosion protection are therefore designed together with you for your product and your site.
Why Wood Flour Is Demanding
Fibers, low bulk density, and dust explosion risk decide whether a wood flour silo runs reliably.
Fibrous wood particles interlock and build stable bridges above the outlet – a classic cause of discharge stoppages.
Wood dust is combustible. Filling, venting, and filtration must be part of a safety concept.
Wood flour needs a lot of volume per ton and behaves differently in filling and venting than denser products.
During pneumatic filling and conveying, fine wood dust spreads quickly and settles on equipment and surroundings.
Damp wood flour cakes and flows poorly. Moisture also matters for WPC and compounding.
Wood flour grades, fibers, and other fillers must not be mixed by accident.
Silo Materials
We build silos exclusively in aluminum and stainless steel. Carbon steel is not an option for us: its coating is the only protection against corrosion – and flaking coating or rust can end up in your product.
Which of our two materials fits your wood flour silo depends on the product, your process, and your site. We select the material and the design with you – together with the explosion protection concept.
Your Wood Flour Silo System
Silo, discharge, blending, filtration, and monitoring 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 pneumatic filling and conveying – sized for fine powders.
Learn moreMonitoring
Level measurement for reliable monitoring of the silo content – so you know when to reorder.
Learn moreWood & Fiber Products
Products marked “Tested in our lab” are on our list of bulk materials. The others we review with you based on your material data before designing the silo.
Tested in our lab
Wood flour, wood powder, wood filler
Wood flour is on our list of bulk materials tested in our lab. Discharge aids are planned for its fibrous particles.
Tested in our lab
Wood dust, sanding dust, fine sawdust
Wood dust is on our tested list. Dust collection and explosion protection are reviewed with you.
Tested in our lab
WPC compound, wood-plastic composite pellets
WPC compound is on our tested list. Silo and discharge are designed for its pellet form.
Tested in our lab
Cellulose fiber, cellulose powder
Cellulose fiber is on our tested list. Its light, fibrous particles are considered in discharge and venting.
Review with us
Sawdust, wood shavings, wood chips
Coarse wood residues differ in size and flow behavior. We review your product data with you before designing the silo.
Review with us
Bark, rice husks, and other biomass residues
Biomass residues have specific flow and safety requirements. We review them with you.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Product Check
Type in your product 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 wood flour 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 wood flour, wood dust, and WPC compound in silos.
Dry wood products can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Sawdust, shavings, bark, and other wood residues we review with you based on your material data.
Wood flour has fibrous particles that interlock and build stable bridges above the outlet. A mass-flow hopper geometry, bin activators, and other discharge aids keep it moving. The right combination depends on your product.
Wood dust is combustible. Explosion protection, venting, and filtration are reviewed with you for your product, your process, and your site.
Integrated filters and PW FilterLine dust collectors separate dust during pneumatic filling and conveying. Filter size and venting are matched to your filling rate and your product.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your wood flour leaves the silo in the order it came in (first in, first out), and no product is left behind in dead zones. Our PW StoreLine silos are designed for concentric mass-flow discharge without asymmetric flow zones.
We build silos exclusively in aluminum and stainless steel – never in coated carbon steel, so no flaking coating or rust can contaminate your product. Which of our two materials fits depends on the product, your process, and your site. We select it with you.
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 – particle size, bulk density, 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.
