The direct-indirect Biomass Furnace is to supply the heat air energy ... , diesel, LPG, gas. Direct or Indirect Biomass Furnace is ideal for the WSG-series rotary drum drier to ... for drying which is equipped with the direct biomass furnace which is matched with movable grate; the screw ... feeder to feed the fuel automatically into the furnace, the pipes, the optional heat-exchanger, the cyclone, ...