The invention relates to a reaction device and method for producing aluminum
oxide, and particularly relates to a reaction device and method for producing aluminum
oxide by taking
pulverized fuel ash as a
raw material. The reaction device comprises an
ammonium sulfate pre-mixing measuring tank, a
pulverized fuel ash storing-measuring bin, a combined spiral reactor, a material receiving tank and a gas collecting
pipe, wherein the
ammonium sulfate pre-mixing measuring tank and the
pulverized fuel ash storing-measuring bin are arranged above the combined spiral reactor and are connected with an upmost inlet in the combined spiral reactor through connecting pipes at the bottom parts of the
ammonium sulfate pre-mixing measuring tank and the pulverized fuel ash storing-measuring bin; and the material receiving tank is arranged below the combined spiral reactor and is connected with a lowest outlet in the combined spiral reactor through a connecting
pipe at the top part of the material receiving tank. By the device and the method, the problems related to large-scaled production are solved; the device and the method have the characteristics of
continuous production, high capacity of single-set device, reaction stability, high
utilization rate or conversion rate of the
raw material, and the like; the combined spiral reactor has the advantages of long service life, low production cost and the like; and the device and the method have a broad market prospect.