The feeder is divided into three types: slot feeder, pendulum feeder and disc feeder.

Trough feeders are widely used in chemical, mining, metallurgy, construction, mineral processing, coal and other industries to send block materials from storage bins to receiving devices.

The trough feeder can be erected on the ground or hoisted at the discharge opening of the mine bin. The bottom plate of the tank reciprocates with a stroke of 20-60 times/min and a stroke of 20-200 mm. The stroke can be appropriately adjusted by the eccentric of the drive, with the eccentricity being half of the stroke. According to some ore dressing production practices, for viscous ore, the eccentricity should not be less than 30mm. The tank width of the trough feeder is approximately 2-2.5 times the maximum particle size of the feed. The largest trough feeder can meet the ore feeding of iron ore less than 500mm. The most commonly used specification is the 980*1240 trough feeder with a feed size of 350-0mm, which is suitable as a feeding device for the 400*600 jaw crusher.