Silo transport refers to the transport of powdered and free-flowing goods in specially equipped silo trailers. It ensures hygienic, contamination-free conveyance of bulk materials from the loading point directly into the recipient's facility. Karl Michels GmbH & Co. KG from the Westerwald has specialised in silo transport for local and international long-distance haulage for decades.
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What is silo transport?
Silo transport is a specialised form of bulk goods transport in which powdered, granular, or dusty materials are conveyed in closed silo trailers. Unlike open tipper vehicles, the silo trailer fully protects the cargo from moisture, contamination, and product mixing.
Silo transport is situated in the segment of powdered and free-flowing goods logistics. It requires specially equipped vehicles, trained driving personnel, and defined cleaning processes between individual product changes.
Silo transport is used wherever bulk goods need to be moved in large quantities, hygienically, and without direct product contact: in the construction materials industry, the ceramics industry, the chemical industry, or animal feed production.
What is transported in silos?
Silo transport is used for goods that are in powder, granulate, or dust form and can be unloaded pneumatically, i.e. by compressed air. The range is wide.
Typical goods in silo transport:
- Powdered and free-flowing products – including residually moist and dusty goods
- Refractory raw materials – one of the core areas at Karl Michels GmbH & Co. KG
- Raw materials for the glass industry
- Base materials for the raw materials industry
- Combustion ashes – including non-hazardous and hazardous waste
- Hazardous goods – with appropriately equipped vehicles
The decisive point: not every bulk good is suitable for every silo trailer. Residually moist goods, slow-flowing materials, or temperature-sensitive substances require specific vehicle equipment, such as fluidisation membranes, interior coatings, or cooled compressors.
Bulk goods that are not in powder or dust form are transported at Michels using other vehicle types – such as tipper semi-trailers or tipping trailers.
How does unloading work in silo transport?
Unloading in silo transport is carried out pneumatically: a vehicle-mounted compressor generates compressed air that conveys the bulk goods through a hose system directly into the silo or production facility of the recipient – dust-free and without manual handling.
This has several advantages over tipping:
- No open discharge – the goods pass directly and in a closed system into the recipient's facility
- No product contact – hygienic requirements are maintained
- Flexible unloading points – even confined or difficult-to-access facilities can be served via hose connection
- Dust-free process – relevant for environmental and occupational health and safety requirements
Depending on the cargo and requirements, the silo trailers are equipped with interior coatings, fabric mats, or fluidisation membranes. Sound-insulating covers on the compressors reduce noise during the unloading process.
Which vehicles does a silo freight forwarder use?
What exactly is a silo, i.e. a silo trailer, as a vehicle? It is a closed, pressure-resistant trailer specifically designed for the transport of powdered and free-flowing goods. It differs fundamentally from open tipper vehicles or curtainsider trailers.
Technical features of a silo trailer:
- Usable volume: 42 to 63 m³ (at Karl Michels GmbH & Co. KG)
- Unloading: pneumatic via vehicle-mounted compressor
- Equipment variants: interior coatings, fabric mats, fluidisation membranes, cooled compressors
- Hazardous goods suitability: legally compliant equipment for ADR transport possible
- Sound insulation: sound-insulating covers on the compressors
The usable volume of 42 to 63 m³ enables flexible handling of both confined loading and unloading points and heavy or voluminous goods. A complete overview of the fleet and all transport solutions is available on the Logistics Solutions overview on the website.
Why is silo cleaning so decisive?
The cleanliness of silo trailers in silo transport is not a given – it is a central quality requirement. Before every product change, the vehicles must be cleaned properly and professionally to rule out product contamination.
What happens without consistent cleaning? The cargo of the subsequent order can be contaminated by residues from the previous product. For virtually all materials, this can lead to quality defects or liability issues.
Karl Michels GmbH & Co. KG operates for this purpose:
- An in-house silo interior cleaning and drying facility in Meudt – also available for third-party vehicles
- A European network of certified cleaning facilities for international transport
This service ensures that contamination can be ruled out – regardless of whether the silo transport takes place within Germany or cross-border.
Silo transport at Karl Michels GmbH & Co. KG
Karl Michels GmbH & Co. KG, based in Meudt in the Westerwald, has specialised in silo transport for decades. The company was founded in 1937 and is today in its fourth generation. More about the company's history can be found on the company page.
Scope of services in silo transport:
- Silo transport for local and international long-distance haulage
- Modern silo fleet with usable volumes of 42 to 63 m³
- Transport of ceramic and refractory raw materials, raw materials for the glass industry, powdered and free-flowing products, combustion ashes, and hazardous waste
- Hazardous goods transport with legally compliant equipped vehicles
- In-house silo interior cleaning and drying facility in Meudt
- Certified waste management company pursuant to § 56 KrWG – more on this in the article Metal and Waste Transport: What Clients Need to Know
The Meudt location is conveniently situated between Cologne and Frankfurt am Main, with direct access to the A3 and indirect connections to the A5, A48, and A61. Via the Rhine ports of Bendorf, Koblenz, and Andernach, intermodal transport chains are also possible.
Goods that are to be stored on an interim basis or filled into big bags after silo transport can be processed directly at the Meudt site – in the stationary silo system, via silo ensiling, or at the big bag filling station. How big bag filling works in detail is explained in our article Big Bag Filling & Loading at Michels.
FAQ: Frequently Asked Questions about Silo Transport
What is silo transport?
Silo transport is the transport of powdered and free-flowing goods in closed silo trailers. Unloading is carried out pneumatically – dust-free and directly into the recipient's facility. Silo transport ensures hygienic, contamination-free conveyance of bulk materials.
What is transported in silos?
Silo transport typically carries ceramic raw materials, refractory raw materials, raw materials for the glass industry, powdered and free-flowing products, combustion ashes, and non-hazardous and hazardous waste. Residually moist and dusty goods can also be transported if the vehicles are equipped accordingly.
What exactly is a silo, i.e. a silo trailer?
A silo trailer is a closed, pressure-resistant trailer for the transport of powdered and free-flowing goods. It has a vehicle-mounted compressor for pneumatic unloading and is equipped depending on the cargo with interior coatings, fabric mats, or fluidisation membranes. The usable volume is typically between 42 and 63 m³.
What is the difference between silo transport and tipper transport?
In silo transport, the goods are conveyed pneumatically, i.e. by compressed air, directly into the recipient's facility. There is no open discharge. In tipper transport, the goods are unloaded by tipping the trailer. Silo transport is therefore more hygienic, less dusty, and better suited for sensitive or fine-grained materials. More on the possible applications of tipper vehicles is explained on the Tipper Semi-Trailer Transport page.
How are silo trailers cleaned?
Before every product change, silo trailers are cleaned in a silo interior cleaning and drying facility. Karl Michels GmbH & Co. KG operates an in-house facility in Meudt and additionally has a European network of certified cleaning facilities.
Can hazardous goods also be transported by silo transport?
Yes. Karl Michels GmbH & Co. KG has silo vehicles that meet all legal requirements for hazardous goods transport and are equipped with the necessary safety systems. As a certified waste management company pursuant to § 56 KrWG, the company is also authorised to transport hazardous waste. More on this in the article Metal and Waste Transport: What Clients Need to Know.
Where does Michels offer silo transport?
Karl Michels GmbH & Co. KG offers silo transport for local and international long-distance haulage. The area of operation covers Germany and European countries. The team is directly available for enquiries: Submit enquiry
What is a silo truck?
A silo truck refers to the combination of tractor unit and silo trailer. The term is often used interchangeably with silo vehicle or silo trailer. A silo freight forwarder such as Karl Michels GmbH & Co. KG operates a correspondingly specialised fleet.
For all questions, the team of
Karl Michels GmbH & Co. KG is at your disposal.
