A Belt Feeder controls the rate of material from a bin or hopper. 

Belt feeders typically are used with crushers, grinders, mixers, blenders, conveyors and dryers. Belt feeders are very effective for smaller sized materials and allow material to be automatically conveyed into a process.

Typical bulk materials using belt feeders are grains, ag residues, ash, biomass, coal and other minerals, and fertilizer granular.

Belt Feeder at Manufacturing Plant
Belt Feeder Manufactured by Wolf