Spodumene mineral powder suspension roaster device

A spodumene mineral powder suspension roaster device comprises a dispersion dryer, a first separator, a cyclone preheater, a suspension roaster, a second separator, a phase change reactor, a cyclone cooler, a powder waste heat boiler, a waste gas purifier and an induced draft fan. An air inlet of the dispersion dryer is communicated with the cyclone preheater; a discharge port of the dispersion dryer is communicated with a feed port of the first separator; the first separator, the cyclone preheater, the suspension roaster, the second separator and the phase change reactor are communicated in sequence; the phase change reactor is communicated with the cyclone cooler through a system air suction pipeline, and an air inlet is formed in the system air suction pipeline; and the cyclone cooler is communicated with the powder waste heat boiler. A single set of device is large in treatment capacity and small in occupied area, and construction investment is saved; the reaction speed is high, the efficiency is high, wa