Shotcrete
Shotcrete is a spray-applied refractory lining where semi-wet refractory material is pumped to a nozzle and projected at high velocity onto a target surface. It sets and bonds quickly, forming a dense monolithic layer.
The material is blended in a high-speed, high-intensity mixer, ensuring precise control over water addition under optimal mixing conditions. This process produces properties comparable to vibrocast low-cement castables. Additionally, the material is extensively deflocculated, which ensures smooth pumping and enables transportation over considerable distances and heights.
Features
- High Durability: Achieved through controlled and automated application.
- Improved Safety: Mechanised application enhances worker safety.
- Enhanced Benefits: Combines the advantages of casting and gunning while avoiding the drawbacks of both methods.
Benefits
- Easy Installation: Simplifies the process, minimises kiln shutdowns, and speeds up start-up times.
- High Installation Rates: Application rates of up to 10 tons per hour.
- Low Rebound Loss: Typically around 5–6%, significantly lower than conventional gunning techniques.
- Cost Efficiency: Reduced downtime translates into substantial cost savings.
Applications
- Cement Industry: Tertiary air duct, inlet, cooler.
- Ironmaking: Torpedo repair, blast furnace main.
