Schüttgut
Also: Schüttgüter, Bulk, Bulk-Gut, Bulkware, Schüttware, Schüttmaterial
AI-generated
Bulk material refers to loose, unpackaged materials such as granulates, powders, grain, or sand that are transported and stored without individual packaging. Specialized conveying technology, silos, or container systems are required for handling and storage.
Key facts
- Bulk material is not handled as individual units but is measured and managed by volume, weight, or density.
- The flow behavior, granulation, and moisture sensitivity of a material largely determine the choice of conveying and storage technology.
- Depending on requirements, silos, big bags, conveyor belts, or pneumatic systems are used for bulk material.
- In regulated industries such as food and pharmaceuticals, cleanability and contamination prevention are central selection criteria.
What is bulk material?
Bulk material encompasses all loose, unpackaged materials that are moved, stored, or transported in large quantities as a bulk mass. Typical examples include grain, sand, gravel, coal, plastic granulates, powders, pellets, and chemicals in powder form. Unlike piece goods, bulk material cannot be grasped or counted as individual units — instead, it is measured by weight, volume, or density. The precise distinction between bulk material and piece goods is not always clear-cut in practice: small, uniform parts such as screws or tablets can be assigned to either category depending on the handling context.
How does bulk material logistics work in practice?
Handling bulk material requires technology tailored to the specific material. For storage, silos, flat warehouses, bunkers, or Flexible Intermediate Bulk Containers (known as big bags) are used. Internal transport is carried out via conveyor belts, screw conveyors, pneumatic conveying systems, bucket elevators, or vibrating troughs. For external transport, tank vehicles, bulk containers, or tipper vehicles are used.
The following material properties are critical for planning and operation:
- Flow behavior: Whether a material tends to bridge, flows poorly, or is sticky influences the choice of discharge devices and bunker geometry.
- Granulation and particle size: Coarse materials behave differently from ultrafine powders, which determines the conveying technology and dust protection measures required.
- Abrasiveness and corrosiveness: Hard or chemically aggressive bulk materials increase equipment wear and require appropriate materials of construction.
- Segregation tendency: Mixtures of particles with different sizes or densities can segregate during transport or storage, affecting product quality.
- Hygroscopicity and moisture sensitivity: Many powders and granulates clump when exposed to moisture, placing special demands on storage climate control and sealing.
What matters when selecting bulk material solutions?
When planning a bulk material system, you should first systematically record the material properties — ideally through bulk material analyses in a laboratory or directly with the manufacturer. On this basis, conveying technology, storage capacity, and cleaning concepts can be designed. Cleanability is a central criterion particularly in the food, pharmaceutical, and chemical industries, as cross-contamination must be avoided. Additional regulatory requirements apply to hazardous goods, such as those from the ADR regulations for road transport. Solution approaches vary considerably depending on the vendor, so a comparison of different concepts is recommended. In the long term, maintenance requirements, spare parts availability, and the potential for automating dosing and weighing also play an essential role.
Related terms
- Bestand in der Logistik
In logistics, inventory refers to the quantity of goods physically present or recorded in accounting at a specific point in time – including raw materials, semi-finished goods, and finished products. It is a key control variable because it ties up capital while simultaneously ensuring the ability to deliver.
- Blocklager
A block storage system is a storage method in which load units — typically pallets — are stacked directly on the floor in rows and blocks without any racking structure.
- Bodenlagerung
Floor storage refers to the storage of goods directly on the floor, without the use of racking systems. Pallets, stacks, or marked floor positions serve as the basic structure for area organization.
- Cargo Handling
Cargo Handling refers to the physical processing of freight at transshipment points such as ports, terminals, hubs, or warehouses. It encompasses all operational activities from loading and unloading through sorting to cargo securing.
- Charge
A batch is a uniquely identifiable quantity of products manufactured or processed under identical conditions. It forms the basis for traceability, quality control, and legally required recall processes throughout the entire supply chain.
- Chargenrückverfolgung
Batch traceability refers to the complete and uninterrupted trackability of products and materials along the supply chain based on their batch assignment. It enables companies to quickly identify and selectively block all affected quantities in the event of a quality issue or recall.
- Disposition
Disposition refers to the operational planning and control of resources, quantities, and orders in logistics – for example in transport or materials disposition. It encompasses capacity assignment, scheduling, prioritization, and response to disruptions.
- Distributionslogistik
Distribution logistics encompasses all processes that move goods from the manufacturer or warehouse to the end customer – from network planning through storage and transportation to order fulfillment.