The large quantities of dust generated during the handling of bulk materials can pollute the environment. Dust clouds can also occur during loading, filling and palletising. This not only creates considerable clean-up for the employees, but chemical industry products can also present a health hazard and cause dangerous reactions. With its conveying, loading, filling and palletising systems, BEUMER Group ensures minimal dust emission.
The BEUMER portfolio includes curved belt conveyors for fast and cost-efficient transport of large quantities of bulk material from the quarry or mine to the factory or port. The belt conveyors are able to navigate long distances, high angles of inclination and tight curve radii, and can be adapted individually to the belt or pipe conveyor bulk handling solutions. Depending on the customer's requirements, BEUMER provides either troughed belt or pipe conveyor bulk handling solutions. Open troughed belt conveyors are recommended for larger throughputs, higher mass flows and wider curved radii. Closed Pipe Conveyors protect both transported items from environmental influences and the environment from falling items. Troughed belt conveyors can also be covered or encased to minimise dust formation during transport. This seal guarantees dust-free transport. In its belt bucket elevators, BEUMER reliably seals the shaft casings, which stops dust from escaping. Instead, the dust trickles into the bucket elevator boot that is equipped with a dynamic bottom. Wet and sticky material cannot accumulate but is fed back into the transport process.
Loading without spilling
BEUMER Group has developed bulk loading heads for the quick and dust-free loading of bulk transporter vehicles. They are designed according to the double-wall system, where the material inlet and the dedusting unit are separated from each other. When the bulk loading head is placed on a filler neck, its sealing cone is lowered and the outlet spout opens simultaneously. The lowering level of the sealing cone is variable. You can adjust the fill level in the vehicle using the fill level meter. In order to balance out any minor positional deviations of the vehicle, the operator can move the bulk loading head laterally during placement.
The bulk loading head is also available with an integrated compressed-air filter. This allows the centralised dedusting units to be operated independently from the dust transporting devices. The dust removed from the bulk transporter vehicle is fed again to the material flow during loading. The compressed-air filter consists of filter hoses, which are positioned between the inner telescopic tube and the outer bellows. The suction is carried out by a fan fastened at the outside. The cleaning is carried out by timed compressed-air shocks.
Dust-free loading of open vehicles
The company offers various types of telescopic loading systems for dust-free loading of open vehicles. With these systems, the bulk loading head is lowered to the floor of the vehicle and the material feed is switched on. A fill level switch in the lower dedusting hood is activated by the rising material, which causes the bulk loading head to be raised automatically. The edge of the dedusting hood always rests on the material cone while it rises so that no dust can escape. The bellows, or the telescopic tubes for the dust extraction, are connected to a central dedusting air system. Corresponding devices or flow control gates transport the material to the system. The bulk loading heads can also be equipped with fill level indicators. Once the vehicle is loaded, they reliably turn off the material feed. Different types of fill level indicators are used depending on the properties of the material. Some of the criteria used to select the correct switch are bulk density, flow behaviour, as well as product temperature.
Adapted from press release by Katherine Guenioui
Read the article online at: https://www.worldcement.com/product-news/22102014/beumer-group-tackles-dust-emissions-part-one-717/