Solutions · Titanium Dioxide Storage
Titanium dioxide is one of the finest and most cohesive powders in bulk storage – and every particle of contamination shows in a white product. PW Silo Systems designs aluminum and stainless steel TiO₂ silos with you – with mass-flow discharge, discharge aids, and dust collection for your pigment.
TiO₂ Storage at a Glance
A titanium dioxide silo stores TiO₂ and other white pigments close to production – for plastics and masterbatch, paints and coatings, paper, or building materials. It keeps the pigment clean and dry and feeds it in a controlled way to dosing, mixing, or extrusion.
TiO₂ is a very fine, cohesive powder: it bridges, forms rat-holes, and dusts during filling. Because it is used for whiteness and opacity, contamination is immediately visible in the end product. Silo geometry, discharge aids, and dust collection are designed together with you.
Why TiO₂ Is Demanding
Fine particles, dust, and high purity requirements decide whether a TiO₂ silo runs reliably.
TiO₂ is very fine and cohesive. It compacts under its own weight, builds bridges over the outlet, or flows only through a narrow channel.
In coated carbon steel silos, flaking paint and rust particles can end up in the pigment – and show up as specks in a white product.
During pneumatic filling, very fine pigment dust spreads quickly and settles on equipment and surroundings.
Damp pigment flows worse and can form lumps that block the outlet or the feeder.
Grades and lots can differ slightly – and differences in whiteness or dispersion show up in the end product.
TiO₂ is often used together with fillers such as calcium carbonate, talc, or barium sulfate – which 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 a white pigment.
Which of our two materials fits your TiO₂ silo depends on the grade, your process, your quality requirements, and your site. We select the material and the design with you.
Your TiO₂ 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 moreWhite Pigments & Fillers
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
Titanium dioxide, TiO₂, white pigment, rutile and anatase grades
Titanium dioxide is on our list of bulk materials tested in our lab. Outlet, discharge aids, and filtration are designed for its very fine particles.
Tested in our lab
Barium sulfate, barite, blanc fixe
Barium sulfate is on our tested list. As a dense white filler, it is considered in silo statics and discharge design.
Tested in our lab
Aluminum hydroxide, alumina trihydrate, ATH
Aluminum hydroxide is on our tested list. Its fine particles are considered in hopper design and dust collection.
Review with us
Zinc oxide, ZnO
Zinc oxide is used in rubber, plastics, and coatings. We review your product data with you before designing the silo.
Review with us
Iron oxide pigments, red, yellow, and black iron oxide
Colored pigments require clear product separation. We review your pigments and requirements with you.
Review with us
Lithopone, white pigment
Lithopone is used as a white pigment in coatings and plastics. We review your material data with you.
Also tested in our lab:
Send us your material data and we will review the right solution with you:
Pigment Check
Type in your pigment 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 titanium dioxide 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 titanium dioxide and white pigments in silos.
Dry pigments and white fillers can be stored in a properly designed silo. These products are on our list of bulk materials tested in our lab:
Zinc oxide, iron oxide pigments, and lithopone we review with you based on your material data.
TiO₂ is a very fine, cohesive powder. It compacts under the weight of the silo content and builds bridges or narrow flow channels above the outlet. A mass-flow hopper geometry, PW SpeedBlow air fluidization, and bin activators keep it moving. Which combination is right depends on your grade.
We build silos exclusively in aluminum and stainless steel – never in coated carbon steel, so no flaking coating or rust can contaminate your pigment. Which of our two materials fits depends on the grade, your process, your quality requirements, and your site. We select it with you.
In mass flow, the entire silo content moves downward when material is discharged – not just a channel in the center. Your titanium dioxide 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.
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 pigment.
Yes. PW BlendLine gravity blending silos homogenize several deliveries before the pigment reaches your process – for more consistent color and quality in your end product.
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.
