Bulk bag dischargers

As this type of process equipment becomes more and more popular, there are an increasing number of suppliers and variations of configuration. They are also known by a number of 

Because of the wide range of configurations and suppliers, there is no one definitive configuration description. A list of the features which are available on at least one configuration are listed below  

Spout clasping clip/iris valve Vibration discharge assistance Weigh batching 

The bag extension system has a twofold purpose. Firstly, it allows different size bags to be handled by the same discharge station. This is particularly useful where bag sizes are inconsistent, depending on the supplier and/or material being discharged. The second purpose of the bag extension system is to raise the bag walls and floor into a cone shape once the majority of the material has been discharged from the bag. While some systems have flow activation paddles or a bag massaging system to promote flow, this may not be of 

When referring to optional materials, this generally refers to the material of construction of the discharge cone and the receiving hopper. These are available in a number of materials from food quality stainless steel to mild steel. When selecting for a food application, it is also important to ensure that the rubber seal materials are also compliant with regulations. Apart from the mechanical flow aids, some sysfems are also available with pneumatic 

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Figure 3.13. Flow-Flexer and Top-Pop bulk bag discharging system. Courtesy of K-Tron Soder, Pitman, NJ, USA.

Palamatic, in addition to designing conventional bulk bag discharging systems, has developed another version ealled the Duo-Pal Dump Station which combines bulk bag and small bag discharging through a dust control unit. 

Figure 7.8 (a) Bulk bag discharger with forklift loading (Unitrak Corporation Ltd) (b) bulk bag discharge... 

Figure 7.9 Bulk bag discharger with glove box (Spiroflow Ltd).

As with the bulk bag dischargers, the materials used in, and the application of, bulk bag fillers is wide and varied. However, the same proviso holds care must be taken to ensure that the system is adequately designed to take into account the flowability characteristics of the material. Some example materials and applications are the loading of polymer resins into a variety of container sizes the batch weighing of PET the filling of bags in a carousel... 

Aptech (Powder Systems) Limited (2006) Bulk Bag Dischargers, Bulk Bag Fillers, Sack Tipping Stations. 

Entecon UK Ltd (2006) Aeromechanical Conveyors, Automatic Sack Opener, Bulk Bag Dischargers, Bulk Bag Fillers, Sack Tipping Stations. http //www.entecon.co.uk/page.php page= products. Accessed 21 November 2006. 

Unitrak Corporation Ltd (2006) Aeromechanical Conveyors, Bulk Bag Dischargers, Flexible Screw Conveyors. 

AccuRate developed a combined bulk discharging station and metering unit. This system lifts and positions the bulk bag over a metering unit which can supply material in a known quantity directly to the point of use. 

Sand is normally delivered in bulk and discharged directly to a silo via a pneumatic conveyor, conveyor belt or grab. Specialist sands may arrive in bags or by tanker. Used sands are stored in silos for regeneration and in silos or heaps for transport for external re-use or disposal. 

Bulk ignition Discharge system fails hot powder to a silo Product directly bagged... 

The carbon black (soot) produced in the partial combustion and electrical discharge processes is of rather small particle si2e and contains substantial amounts of higher (mostly aromatic) hydrocarbons which may render it hydrophobic, sticky, and difficult to remove by filtration. Electrostatic units, combined with water scmbbers, moving coke beds, and bag filters, are used for the removal of soot. The recovery is illustrated by the BASF separation and purification system (23). The bulk of the carbon in the reactor effluent is removed by a water scmbber (quencher). Residual carbon clean-up is by electrostatic filtering in the case of methane feedstock, and by coke particles if the feed is naphtha. Carbon in the quench water is concentrated by flotation, then burned. 

Brush discharges from flexible, intermediate, bulk containers (FIBGs), plastic bags, stretch wrap, or other plastic film... 

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