The invention discloses a
calcination production line and a
calcination method for industrial by-product
gypsum. The
calcination production line comprises a feeding mechanism, a metering mechanism, an inclined conveyer belt, a scattering mechanism, a
drying pipeline, a gas-
solid separation
tower, a negative pressure fan, a screw feeder, a horizontal-type rotational calcining
kiln, a burning furnace, a finished-product conveying mechanism, a
material storage tower, a
temperature measurement display
system and a PLC (
Programmable Logic Controller)
control system, wherein the
drying pipeline is arranged vertically, the middle lower part of the
drying pipeline is connected to a
discharge port of the scattering mechanism, the upper end of the drying pipeline is connected to a gas inlet of the gas-
solid separation
tower, a gas outlet of the gas-
solid separation tower is connected to a gas inlet of the negative pressure fan, a
discharge port of the gas-solid separation tower is connected to the screw feeder, a
discharge port of the screw feeder is arranged in the rotational calcining
kiln, the burning furnace comprises a primary burning furnace and an auxiliary burning furnace, and multiple U-shaped heat exchange pipes are fixed in the rotational calcining
kiln. The calcination method comprises the following steps of: charging, metering, scattering, drying, gas-solid separating, calcining, discharging, finished-product conveying, storing and cooling; and the calcination
production line has the advantages of high
automation degree, stable finished-product quality and lower
energy consumption.