Electric refractory concrete spraying machine for sale
2026-02-07 10:56:24
Today, our factory shipped 3 electric refractory concrete spraying machines to an overseas customer. This machine utilizes the combined action of mechanical power and pneumatic pressure to complete the mixing, conveying, and spraying process of refractory concrete.
Its core process can be divided into the following three steps:
1. Material Mixing: Dry powder refractory materials (such as refractory castables and sprayable coatings) are added to the mixing system in proportion to form a uniform wet slurry (wet spraying) or maintain a dry powder state (dry spraying). Wet spraying ensures consistent material properties through premixing, while dry spraying involves adding water in real-time at the spray gun, reducing equipment complexity.
2. High-Pressure Conveying: The mixed material is pressurized by a hydraulic or pneumatic system and conveyed to the spray gun through pipelines. Hydraulic drive adapts to high-viscosity, high-density materials, ensuring conveying stability; the pneumatic system provides power through compressed air, enabling a lightweight design.
3. Atomization Spraying: High-pressure air inside the spray gun atomizes the material into a fine particle stream, which is then sprayed at high speed onto the construction surface to form a dense refractory layer. The atomization effect directly affects the spraying quality and needs to be optimized by adjusting the air pressure and output rate.
Advantages of the refractory concrete spraying machine:
1. High-efficiency continuous operation:
Dual-cylinder alternating feeding technology eliminates pulsation, achieving continuous and stable feeding and avoiding frequent shutdowns for refueling as in traditional models.
With a conveying flow rate of 3-9 m³/h, hundreds of square meters of refractory layer spraying can be completed per day, increasing efficiency by more than 50% compared to traditional methods.
Maximum conveying distance of 200m horizontally and 20m vertically, adapting to complex construction environments.
Wide material adaptability: Can spray dry powder, mortar, ordinary concrete, and refractory castables, with aggregate particle size compatibility of 4-20mm.
By adjusting the air pressure and output rate, uniform spraying of materials with different viscosities can be achieved, meeting the needs of multiple industries such as metallurgy, building materials, and power.
2. Excellent spraying quality:
High-pressure atomization technology results in fine material particles with strong adhesion, and the uniformity error of the refractory layer thickness is ≤5%.
3. Ease of Operation:
The spray gun and nozzle connection direction is adjustable, supporting vertical, horizontal, and inclined surface application, adapting to complex scenarios such as tunnels and blast furnaces.
An integrated electrical control system supports remote monitoring and parameter adjustment, reducing labor intensity.
Some models are equipped with pre-wetted nozzles and an automatic lubrication system, further simplifying the operation process.
4. Environmental Protection and Energy Saving:
Wet spraying reduces dust emissions, meeting green construction standards; dry spraying reduces water consumption through real-time water mixing.
Optimized motor efficiency reduces energy consumption by more than 20% compared to traditional models, resulting in significant long-term operating cost savings.
5. Structural Durability:
Key components (such as spray guns and delivery pipes) are made of wear-resistant materials, supporting quick replacement and extending equipment life.
1. Metallurgical Industry: Refractory lining spraying for blast furnaces, converters, and electric furnaces, achieving temperatures above 1600℃.
Repairing tundishes and heating furnace walls in continuous casting, reducing downtime for maintenance.
2. Building Materials Industry: Refractory material spraying for the inner walls of glass kilns and cement rotary kilns, extending service life.
Insulation layer construction for tunnel kilns and roller kilns, reducing energy consumption.
3. Power and Chemical Industries: Anti-corrosion refractory lining spraying for boiler combustion chambers and reactors, improving equipment safety.
Wear-resistant layer construction for the inner walls of flues and desulfurization towers, reducing high-temperature gas corrosion.
4. Building Restoration: Fire protection for historical buildings, such as spraying fire-retardant coatings on wooden structures.
Concrete structure reinforcement, repairing cracks with high-strength refractory mortar.
