Solutions · Battery Material Storage
In battery production, foreign particles and moisture are not acceptable – and many raw materials are fine, cohesive powders. PW Silo Systems designs aluminum and stainless steel silos for lithium hydroxide, iron phosphate, graphite, and carbon black with you – with the right material, discharge, and dust collection for your process.
Battery Material Storage at a Glance
A battery material silo stores raw materials for cathodes and anodes – such as lithium hydroxide, iron phosphate, graphite, or carbon black – close to mixing and coating. It keeps the material clean, dry, and contained and feeds it in a controlled way to dosing.
Purity is critical in battery production. Lithium hydroxide absorbs moisture and reacts with carbon dioxide from the air, and many battery powders are fine and dusty. That is why the silo material, the design, and the discharge equipment are defined together with you for your material and your process.
Why Battery Materials Are Demanding
Purity, moisture, and fine particles decide whether a battery material silo runs reliably.
Metallic particles, flaking coating, or rust are not acceptable in battery materials.
Lithium hydroxide absorbs moisture and reacts with carbon dioxide from the air. Exposure changes the product.
Graphite, iron phosphate, and carbon black are fine powders that bridge, form rat-holes, or flow poorly.
Fine powders spread during pneumatic filling and conveying – a problem in clean production areas.
Lot-to-lot differences in raw materials affect electrode quality.
Cathode and anode materials must be kept strictly separate.
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 must not end up in battery materials.
Which of our two materials and which design fit your battery material silo depends on the material, your purity requirements, your process, and your site. Lithium hydroxide, for example, is alkaline. We define the material and the design with you.
Your Battery Material 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 moreCathode & Anode Materials
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
Lithium hydroxide, LiOH
Lithium hydroxide is on our list of bulk materials tested in our lab. Silo and venting are designed to protect it from moisture and air.
Tested in our lab
Lithium hydroxide monohydrate, LiOH·H₂O
Lithium hydroxide monohydrate is on our tested list. Outlet and discharge are matched to its grain size and flow behavior.
Tested in our lab
Iron phosphate, ferric phosphate, FePO₄
Iron phosphate is on our tested list – a precursor for LFP cathode material. Fine particles are considered in hopper design and filtration.
Tested in our lab
Graphite, graphite powder, anode graphite
Graphite is on our tested list. Discharge aids and dust collection are planned for fine anode grades.
Review with us
Lithium carbonate, Li₂CO₃
Lithium carbonate is a common battery raw material. We review your product data with you before designing the silo.
Review with us
LFP, NMC, cathode active materials
Cathode active materials have specific purity and handling 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:
Material Check
Type in your battery material 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 battery material 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 battery materials in silos.
Dry battery raw materials can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Lithium carbonate, cathode active materials, and other battery materials we review with you based on your material data.
We build silos exclusively in aluminum and stainless steel – never in coated carbon steel, so no flaking coating or rust can contaminate your material. Which of our two materials and which design fit depends on your material, your purity requirements, and your process. We define them with you.
Lithium hydroxide absorbs moisture and reacts with carbon dioxide from the air. The silo is closed, and filling and venting are defined for your delivery method. Storage conditions for your site we clarify with you.
Fine, cohesive powders compact under the weight of the silo content and build bridges or rat-holes above the outlet. A mass-flow hopper geometry, PW SpeedBlow air fluidization, and bin activators keep them moving. The right combination depends on your material.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your battery materials 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.
A closed system, 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 material.
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.
