DEVICE AND METHOD FOR SPRAYING CONSTRUCTION OF UNSHAPED REFRACTORY

摘要

PROBLEM TO BE SOLVED: To provide a device and method of spraying construction of unshaped refractory reducing material loss at start of spraying by making a rate of construction water added to a dry unshaped refractory composition fall within a predetermined range regardless of a construction engineer.SOLUTION: The spraying construction device 1 for the unshaped refractory includes: an air current carrying device 2 capable of making the powdery unshaped refractory composition ride on an air current at a predetermined solid/gas ratio and sending out the unshaped refractory composition; a carrying pipe 3 receiving the sent-out powdery unshaped refractory composition from one end side and carrying the unshaped refractory composition to the other end side by the air current from the air current carrying device 2; a construction water adding means 4 adding construction water to the powdery unshaped refractory composition carried within the carrying pipe 3; a differential pressure type flow rate fixed value control valve 6 controlling the addition amount of the construction water provided in the construction water adding means 4 by the internal pressure of the carrying pipe 3; and a spraying nozzle 7 provided at the other end of the carrying pipe 3 and spraying the unshaped refractory composition to which the construction water is added to a construction target.