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Feeder Type:

Application / Operation:

Flow Control:

Volumetric Capacity:

Gravimetric Capacity:

Material Characteristics:

Material Type:

Common Features:

Help with Solids Feeders specifications:

Feeder Type
   Feeder Type       
   Your choices are...         
   Belt / Apron Feeder       Belt or apron feeders use a hopper on top of a short, serrated or smooth belt that is driven by a roller. Material is dispensed from the end of the belt. Units may have skirts or a striking plate to contain or smooth the flow. The feed rate is determined by the belt speed and the gap between the hopper and the belt. 
   Bin Activator System       Bin activators are cone or funnel-shaped systems that use vibrators to help move the material. These systems usually include a cone/funnel attachment and an industrial vibrator. They may also include a cone-shaped baffle. 
   Bin Sweep Arm       Bin sweep arms have a horizontally-oriented screw or auger in the bottom of a bin or silo. As the auger sweeps the bottom of the bin, the screw turns and pulls material into a well. Screws with pitches varying along their lengths may be used to provide uniform flow. Flow rate is controlled by the angular speed (rpm) of the screw and by adjustments to any internal gates. 
   Drum / Roll Feeders       Drum or roll feeders consist of a horizontally-oriented, solid or hollow roll with a hopper on top of the roll. Adjusting a feed gate or the gap between the hopper and roll controls powder and granule feeding. Feeders with hollow rolls are sometimes fed internally. Feeders with solid rolls are usually fed externally. 
   Feed Screws / Augers       Feed screws or augers locate a horizontally-oriented screw or auger in the bottom of a bin, silo or hopper. As the screw turns, material is pushed out. Screws with pitches varying along their lengths may be used to provide uniform flow. Flow rate is controlled by the angular speed (rpm) of the screw and by adjustment to any internal gates. 
   Loading Arms / Layer Loaders       Loading arms or layer loaders are long tubes that telescope or rotate to feed materials evenly into a bin or storage area. To prevent segregation, material is loaded in layers. 
   Loading Spout       Loading spouts are flow-assisting devices that typically consist of a telescoping tube with a funnel-shaped end. They are used for the dust-controlled loading of hoppers, storage bins, shipping vehicles, or packages. Some spouts have a skirt or an outer flexible sleeve to provide for dust withdrawal. Loading spouts also have a pendant control drive to retract or extend the tube.  
   Pneumatic / Vacuum Feeders       Pneumatic or vacuum feeders are also known as Venturi feeders, pneumatic dischargers, fluidizers, air slides, pneumatic injectors, vacuum loaders, pressure loaders and solids handling eductors. These feeding devices use pneumatic pressure to fluidize and push bulk materials to the process unit or vessel.  Vacuum feeders or eductors use a Venturi-generated vacuum to fluidize and pull bulk materials from a process unit or vessel and then push the material to another unit or vessel. 
   Star Feeder / Rotary Airlock       Star feeders or rotary airlocks consist of a paddle wheel-shaped rotor that rotates at low rpm to dispense material into a hopper or process unit (e.g., crushers, screeners, and mixers). If the blades form a tight seal against the valve wall, the valves can be applied in airlock applications. For example, an airlock valve is required if the process or conveying unit is at a higher or lower pressure than the pressure in the feeder. Rotary airlocks come in drop-through, blow-through, or side-entry variations. Star feeders, star feeder gates, rotary solids valves, rotary bulk material valves, rotary airlocks or rotary airlocks valves are terms used to describe these types of feed or flow-assisting devices. 
   Table / Disc Feeders       Table feeders or disc feeders consist of a hopper, rotating disc and skirt. Solids are fed onto the flat portion of the rotating disc.  The skirt controls the level of solids contained on the disc. The feed rate is controlled by adjustments to the skirt position, the hopper gap, or the disc speed. 
   Vibratory Feeder       Vibratory feeders consist of a hopper on top of a metal tray and an unbalanced motor or other controlled vibration source. The degree of vibration, the slope of the tray, and the gap (slot size) between the hopper and tray determine the bulk material feed rate. 
   Other       Other proprietary, specialized, or unlisted equipment types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Application / Operation:       
   Your choices are...         
   Conveyor Feeding       Conveyor feeding is used to supply bulk materials to or from a conveyor. To prevent overloading the conveyor, these devices may need to maintain a pressure differential or control the rate of material delivered. 
   Dust Collecting       Dust collecting is used to remove or filter airborne dust generated from loading or unloading bulk materials from a storage device or process system. 
   Filling       Filling is used to dispense and dose bulk materials (e.g., pills, granules or powders) into bottles, bags, cartons or other packages for shipments to end users. 
   Metering       Metering devices are used to supply solids or bulk materials to crushers, screeners, mixers, classifiers, reactors, and other processing units. Typically, these devices have dosing capabilities. 
   Process / Bin Discharging       Process or bin discharging devices are flow-assisting products for discharging the contents of a bin, silo, or other storage container. The feed may be discharged into a process unit, another feeder or dispenser, a conveyor, a shipping container, or a package. 
   Sampling       Sampling devices are used to take a sample from a process stream or storage container.  
   Other       Other proprietary, specialized, or unlisted applications or operations. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Flow Control / Capacity
   Flow Control       
   Your choices are...         
   Volumetric       The device controls flow on a volumetric basis, such as cubic feet per hour. 
   Weighing / Gravimetric       The device controls flow on a weight or mass basis (e.g., pounds per hour). Feeders with an integrated weighing capability use load cells or scales to provide continuous or batch weighing of one or more components. Some loss-in-weight or weight loss differential feeders monitor loss via weight in the bin. Continuous weigh feeders continuously monitor and totalize the mass delivered. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Volumetric Capacity       This is the continuous volumetric capacity of the material handling device. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
   Gravimetric Capacity       This is the continuous gravimetric capacity of the material handling device. 
   Search Logic:      User may specify either, both, or neither of the "At Least" and "No More Than" values. Products returned as matches will meet all specified criteria.
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Bulk Materials Handled
   Material Characteristics       
   Your choices are...         
   Dry / Free Flowing       Devices can handle dry materials or free-flowing solids. 
   Wet / Bridging       Devices can handle moist materials, slurries or dispersions, or material that bridges or is not free-flowing (e.g., flakes, fibers or other high aspect ratio materials). 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
   Material Type       
   Your choices are...         
   Abrasives / Ceramics       Devices are suitable for high-hardness materials such as abrasives, ceramics or refractories. 
   Chemicals / Fertilizers       Devices are suitable for feeding fertilizers, waxes, salts or other inorganic or organic chemicals. 
   Cosmetics       Devices are suitable for cosmetics applications. 
   Construction Materials / Cement       Devices are suitable for handling cement, limestone, gravel, sand, brick, grog, clay, shale, and/or asphalt. 
   Food Processing       Devices are suitable for feeding solid and liquid-solid mixtures of food products such as grain, milk, dried potatoes, apples, sugar, spices, vegetables or other foods. 
   Metallurgical       Devices are suitable for feeding metals, carbides, ferrosilicon additives, master alloys, slag or other components used in winning metals (smelting), alloying primary metal stock, producing powder metals, or recycling scrap metal.  
   Mining / Ores / Minerals       Devices are feeders for ores and minerals used in subsequent extraction processing. 
   Paints / Adhesives       Devices are suitable for grinding and dispersing paints, pigments, dyes and fillers. 
   Pulp and Paper / Wood       Devices are suitable for moving wood or cellulose feeds, wood chips or pulp for the production of paper, paperboard, particle board and other paper or wood products. 
   Polymers / Molding       Devices are suitable for feeding or metering plastics, elastomers, rubber or other polymeric materials. Pellet feeders are commonly used in these applications. 
   Power / Coal and Coke       Devices are used to feed coal or coke as well as ash in power generation applications. 
   Sanitary / Pharmaceutical       Devices are used for pharmaceutical or other sanitary applications. The equipment is constructed of an easily sterilized material and is designed specifically for hygienic purposes such as medical, pharmaceutical, or food processing applications.  Often, the equipment is approved or certified by a national or international regulatory organization (e.g., USDA, FDA, etc). 
   Waste / Sludge       Devices are used for feeding recycling, remediation, soil reclamation materials or waste water sludge. 
   Other       Other proprietary, specialized, or unlisted material types. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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Common Features
           
   Your choices are...         
   Aerator / Fluidizer       Air injectors or bin fluidizers shoot compressed air into a bin to break up bridges or arches in a bulk material. The breaking of arches allows the material to flow by gravity. Air injectors blast a jet of air into the bin. Bin fluidizers inject air along an internal area of the bin to fluidize a portion of bulk material along the wall. These devices also help reduce flow restrictions from adhesion, rat holing, compacting or clogging. 
   Blending Capability       Blender feeders are capable of metering two or more different powdered components at a desired ratio or percentage. 
   Control Panel       Devices include adjustment controls that are more than just a simple regulator knob. 
   Integral Hopper / Bin       Devices have an integrated hopper or bin. 
   Portable / Mobile       Portable units are mounted on wheels for movement by a person or vehicle. Some units are light enough for an operator to pick up and carry to a work location. 
   Vibrator / Impactor / Agitator       Impactors / rappers, bin activators, shakers, vibrators, vibrating bottoms or other mechanical activators are used to break arches or bridges in bins or hoppers and allow gravity-assisted flow to occur. These devices also help reduce flow restrictions from adhesion, rat holing, compacting or clogging. Impactors provide automation with a sledgehammer-type action. Shakers rock or tilt the whole bin. Vibrators impart vibrations into the bin using an unbalanced motor or an electromechanical vibrator. Some bin activators consist of a vibrated cone, which is placed beneath the bin to be discharged. 
   Search Logic:      All products with ANY of the selected attributes will be returned as matches. Leaving all boxes unchecked will not limit the search criteria for this question; products with all attribute options will be returned as matches.
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