The refractory maintenance gunning machine is professionally used for spraying refractory materials to repair furnaces and kilns. The product has high efficiency, strong adhesion and less dust. The shotcrete machine adopts U-shaped material cavity with good sealing performance, which is mainly used for repairing industrial furnaces. The refractory maintenance gunning machine has many circular material holes on the rotating body. During the rotation of the rotor, when the material holes are aligned with the discharge opening of the upper hopper, the material is fed into the material holes. When the material holes are aligned with the upper hopper, the air is blown in and compressed air Blow the dry mix to the nozzle along the conveying pipe. The gunning machine for refractory maintenance job uses compressed air to spray out a certain proportion of refractory materials at high speed, forming a refractory layer on the surface of the sprayed masonry. The spraying construction speed is fast, the efficiency is high, and the project quality is good. It is widely used and mainly suitable for : Thermal gunning of the refractory layer of industrial furnaces. Refractory gunning machine for refractory work is specially design for spraying refractory materials. Compared with common dry mix shotcrete machine, refractory maintenance gunning machine have some advantage features: refractory maintenance gunning machine is equipped with new type pre-dampening nozzle assy, reduce additive water amount, improve refractory compactness and strength. Low rebound, low dust, it could effectively reduce the waste of refractory materials. As what we all know, refractory materials price is higher than commom concrete, reducing the waste is equivalent to save money for customers. Besides, there are two needle valve in nozzle assy, it could precise adjustment of water volume by adjusting needle valve, if so, it will reduce dependence on operator proficiency. Refractory maintenance gunning machine is also equipped with high pressure water pump, it could provide pressure water in the nozzle, make water atomizing in the water ring, and then make water and refractory materials mixing even. Achieve best spraying effect. The refractory gunning machine for refractory work has reasonable structure, humanized design, reliable performance, convenient operation and maintenance, and long service life. No dust, low noise and low rebound rate when working. This refractory maintenance gunning machine greatly reduces the dust concentration near the machine and the nozzle, improves the working environment of workers, and reduces pneumoconiosis caused by dust.