A liquid 
blast furnace slag granulation device comprises a gate, a granulator, a primary turntable, a water 
nozzle, a secondary turntable, a drive device, a center 
water pipe, a hopper and an 
exhaust pipe, wherein the gate is arranged in the middle part of the upper part of the granulator, the upper half part of the granulator is in a 
water cooled wall structure, the 
lower half part of the granulator is contracted to form the hopper, the primary turntable, the water 
nozzle, the secondary turntable, the drive device and a center 
water pipe are arranged on the center line of the interior of the granulator, the 
diameter of the secondary turntable is larger than that of the primary turntable, the water 
nozzle is located between the primary turntable and the secondary turntable, the opening direction of the water nozzle points at the upper surface of the secondary turntable, the center 
water pipe is arranged on the center of the turntables, the upper part of the center water 
pipe is connected with the water nozzle, and the lateral wall of the granulator is connected with the 
exhaust pipe. The liquid-state 
blast furnace slag is crushed and condensated into 
solid particles under the action of 
centrifugal force and water film 
bursting force. The invention utilizes the 
centrifugal force and 
bursting force of water flash 
vaporization and expansion, enhances the 
granulation effect, reduces 
power consumption and equipment investment of the 
granulation device, and has small 
water consumption and water 
resource saving.