Bulk bag

Shipment. The shipment of porcelain enamel is typically in 45-kg (100-lb) three-ply paper bags. More recently, 227-kg (500-lb) multi-ply cardboard barrels and bulk bags made of high strength woven polymers have been used. Porcelain enamel frit, powder, and premixed and premilled mill additions ate shipped in these flexible containers. 

The NORIT Porta-Powdered Activated Carbon (Porta-PAC) dry injection system pneumatically conveys an adjustable amount of powdered activated carbon (PAC) from bulk bags into the flue gas streams of incinerators for mercury and dioxin emission reductions. PAC is metered using a volumetric feeder into a pneumatic eductor where moving air transfers the carbon to the injection point. A series of interlocks control the operation of the unit and allow local or remote operation and monitoring of the unit. This technology is commercially available. All information is from the vendor and has not been independently verified. 

Figure 3.12. Lancaster bulk bag unloader. Courtesy of Lancaster products, Lebanon, PA, USA.

Due to the environmental protection many powders are delivered in semi-bulk bags. These heavy units require equipment for unloading. Figure 3.12 shows the system for bulk bag unloading to a bin equipped with a weigh hopper to feed.material in a semi-automatie or automatic process. 

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. 

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. 

NON-BULK Bags Cloth, paper, plastic and paper/foil/ plastic composites... 

Wood flour is commonly packaged in (i) multiwalled paper bags (approximately 23 kg or 501b), (ii) bulk bags (1.5 m or 55 ft typical), or (iii) bulk trailers [8]. Wood flour is typically supplied to the customer at moisture contents between 4 and 8% and must be dried before use in thermoplastics. Some wood flour manufacturers offer standard grades, others prefer to customize for individual buyers and applications. 

Fibers polyamide conductive, chopped and staple fibers, tow and filaments for electrostatic dissipation applications in textiles, brushes, carpets, nonwovens, belting, and bulk bags. Extensive technical information, conversion tables, factors, and terminology on PDF files... 

---