Solid fuel feeder for nonmetallic industrial furnace

The utility model discloses a solid fuel feeder for a nonmetallic industrial furnace employing powder material of carbon-containing solid fuel such as coal or petroleum coke powder; the solid fuel feeder comprises a cabin top filter dust remover, a fuel powder storage cabin, a compressed air storage tank, a powder spraying tank, a fluidizing conveyor, a feeding valve, an injection mixer, a powderdivider and solid powder combustors. The solid fuel feeder adopts dilute phase pneumatic conveying, the powder of the solid fuel is conveyed from the powder spraying tank to the solid powder combustors through the primary fluidized mixing, the secondary fluidized conveying and the third fluidized conveying adjustment so that the powder is mixed sufficiently with the conveying medium (compressed air or nitrogen), the spraying is stable, the powder is mixed with air evenly, the powder is combusted sufficiently, the solid powder combustors can be evenly distributed, the powder flame length insidethe nonmetallic industrial furnace is adjustable, the utilization rate of fuel is greatly improved, the fuel cost is saved and the production cost of products is greatly reduced.