The invention discloses a high-temperature
magnesium oxide calcining device and a calcining method thereof, and belongs to the technical field of
magnesium oxide calcining. The device comprises a feeder, an air flow dryer, a first-stage
cyclone pre-heater, a second-stage
cyclone pre-heater, a third-stage
cyclone pre-heater, a dust remover, an induced draft fan, a calcining furnace, an automatic
fuel gas burner, a heat preservation conditioning furnace, a discharging device, a material collector and a cooling
system. According to the invention,
magnesite powder or light calcined magnesia powderis used as a
raw material; a three-stage cyclone pre-heater set is adopted for completing preheating treatment of materials, and high-temperature
calcination and heat preservation conditioning are conducted, wherein
tail gas is calcined to achieve material
drying and preheating process treatment, the process is a dynamic
material flow-carrying
mass transfer and
heat transfer process, high-qualitymagnesium
oxide is produced while
heat energy is effectively utilized, and cost is saved; and the production of
magnesium oxide products with different quality indexes, which are suitable for the field of building materials, can be realized.