According to the general definition, bulk material is a powdery, grainy to granular-shaped or also lumpy mixture that is present in a pourable form. This means that it can be moved in a coherent form.  

The use of mills and crushers depends on the subsequent process and the respective bulk material. For boilers, we use mills whereas for flue gas cleaning, we rely on crushing systems.

The air consumption of a pneumatic conveying system depends on the bulk material to be conveyed, the conveying method, the conveying system used, the desired conveying capacity and the conveying distance.

Basically, all bulk materials may be conveyed. In each case, it is to be determined which systems and units should be used and how much energy is necessary for the conveying process.

We are happy to support you in finding a solution and developing a concept according to your needs.

The change of a bulk good in the power plant industry is very diverse. It depends on the construction of the power plant and the fuel used in the power plant. In addition, meteorological, demographic and various other influences can provide for a change in the bulk material. It is certain however that bulk materials from the area of boiler and flue gas cleaning do not remain the same over time.
 

The bulk materials change depending on the

A complete silo discharge requires precise knowledge of bulk material. STAG has a broad know-how in this area, and the corresponding products are included in its product portfolio. Silos and bunkers with easily flowing products can be equipped with pneumatic discharge aids, and for poorly flowing products, these discharge aids can be completed with mechanical assemblies. Based on such combinations, STAG has yet managed to get every silo/bunker empty.

Yes, abrasive bulk goods can be conveyed pneumatically. In these cases, special attention must be paid to the choice of line types, deflections and other critical units.

We have developed our so-called Dense-Flow-Extreme system specifically for highly abrasive bulk goods. Don’t hesitate to contact us, we will be happy to support you.

It is possible to operate mechanical units, such as trough chain conveyors, reversibly. However, due to the geometry of the drive sprocket, longer reversible operation should be avoided.

STAG has examined and tested hundreds of different bulk goods in the laboratory. This experience has been implemented in plants in the energy, building materials, processing and steel industries worldwide. The experience gained from these plants makes us unique and provides us the security to cover your needs as well.

The technical limits of conveyor systems depend on various factors. The use of new technologies helps to shift or overcome existing limits. 

STAG has realized pneumatic conveying systems covering a distance of far more than 1,000 m and conveying rates of over 250 tons/hour. We will be happy to assist you in the conception of your system.

By means of appropriate means, dust-free filling of bulk goods into a tight container can be easily realised. For the filling of lorries and railway wagons, we use loading devices or pressure conveying vessels. Filling adapters are used for small containers and specially designed tipping stations with docking chutes are employed for the rapid filling of large containers.

STAG is a leading international company in bulk material technology. STAG has the knowledge, the products, and offers all services to solve simple and complex tasks to the entire satisfaction of the customer.

This can be ensured through an optimal design of the pressure vessel defining appropriate angles and corners for the intended product. The equipment of the railway wagon with an adapted discharge system is a decisive factor as well.

The unloading time of a rail wagon essentially depends on the amount of air that may be injected into the rail wagon via the discharge system during the unloading operation, it is limited by the material connecting piece of the rail wagon itself.

As this is a pneumatic conveying process, the limiting parameters are the same as those applying to pneumatic conveyances.