Solutions · Tea Storage
Tea leaves are light, fibrous, and sensitive to moisture and foreign odors – tea powder is fine and tends to cake. PW Silo Systems designs aluminum and stainless steel tea silos with discharge aids and clear product separation for tea blenders and food producers.
Tea Storage at a Glance
A tea silo stores tea leaves or tea powder close to production – for blending, packaging, tea bags, beverages, or food ingredients. It protects the tea from moisture and contamination and feeds it in a controlled way to the next process step.
Light, fibrous tea leaves tend to bridge, fine tea powders cake, and different teas must not take on each other’s aroma. PW Silo Systems designs the silo, its discharge, and product separation around your tea.
Why Tea Is Demanding
Tea is a high-value natural product. Quality and aroma depend on how it is stored.
Tea leaves have a low bulk density and interlock – they bridge at the outlet.
Tea absorbs moisture and foreign odors from its surroundings.
In coated carbon steel silos, flaking paint and steel particles can end up in the tea.
Fine tea dust is combustible. Filling and conveying release dust into the silo and its surroundings.
In funnel flow, tea can stay in the silo for a long time while fresh product passes through the center.
Black, green, and herbal teas and blends 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 tea silo depends on your product, your process, your cleaning requirements, and your site – we review it with you.
Your Tea 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 moreTea 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
Tea leaves, loose leaf tea
Tea leaves are on our list of bulk materials tested in our lab. Discharge aids are planned for light, fibrous leaves.
Tested in our lab
Tea powder, powdered tea
Tea powder is on our tested list. A closed silo protects the fine powder from moisture and caking.
Tested in our lab
Tea, black tea, green tea
Tea is on our tested list. We design the silo around the form you store – leaves, cut tea, or powder.
Review with us
Matcha, green tea powder
Matcha is a very fine, high-value tea powder. We review your product data with you before designing the silo.
Review with us
Herbal tea, rooibos, chamomile
Herbal teas differ widely in particle size and shape. We review your product with you.
Review with us
Instant tea, soluble tea powder
Instant tea is hygroscopic. We review your product data with you before designing the silo.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Tea Check
Type in your tea 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 tea 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 tea in silos.
Tea leaves and tea powders can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Matcha, herbal teas, instant tea, and fruit tea blends we review with you based on your material data.
Both. Aluminum and stainless steel silos are widely used for tea 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 tea. That is why we build silos exclusively in aluminum and stainless steel.
Light, fibrous tea leaves interlock and form bridges above the outlet. Bin activators and PW SpeedBlow air fluidization keep the product moving. The right combination depends on your tea.
We recommend a dedicated silo per product – or PW StoreLine multi-compartment silos that keep several products separate in one silo.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your tea 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 tea 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 tea 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.
