Equipment system for producing mineral powder-grade manganous oxide by reducing low-grade manganese oxide ore through biomass

The invention discloses an e1quipment system for producing mineral powder-grade manganous oxide by reducing low-grade manganese oxide ore through biomass. The equipment system comprises a revolution preheating kiln, wherein the kiln head end of the revolution preheating kiln is communicated with a charging screw propeller; a cyclone dust collector is fixed at the upper end of the kiln head; a bag dust collector is arranged at the lower end of the cyclone dust collector; the bag dust collector is connected with a draught fan; a biomass combustor is arranged at the tail end of the kiln; the biomass combustor is communicated with one end of a reaction furnace propeller by a biomass gas guide tube; the other end of the reaction furnace propeller is communicated with a reaction furnace inlet; a reaction furnace stirrer driven by a motor is arranged on the top of the reaction furnace; a reaction furnace outlet is communicated with a braising tank inlet; a braising tank outlet is communicated with a spiral cooler in