Gunning masses are specialized refractory mixtures designed for application by spraying inside industrial equipment operating under extreme high-temperature conditions.

What Are Gunning Masses?

Gunning masses are ready-to-use dry mixes or pastes composed of refractory powders, binders, and additives. When sprayed and hardened, they form a durable, heat-resistant protective layer that shields metal structures and other surfaces from thermal damage, corrosion, and wear.

Advantages of Gunning Masses:

• Fast Application: The spraying method allows quick coverage of large or hard-to-reach areas;
• Strong Adhesion: Ensures long-lasting bonding to the substrate;
• High Thermal Resistance: Suitable for working temperatures up to 1600°C (2912°F) and beyond;
• Corrosion and Leak Protection: Prevents penetration of aggressive substances to the base metal;
• Cost Efficiency: Minimizes equipment downtime and reduces maintenance expenses.

Typical Applications:

• Metallurgical furnaces (blast furnaces, converters, open-hearth furnaces);
• Cement industry (calcining kilns);
• Power generation (boilers, furnaces, heat exchangers);
• Chemical plants (reactors, roasting furnaces);
• Construction and repair of refractory linings.

Types of Gunning Masses:

• Basic formulations based on alumina, magnesia, chromia;
• Acidic, neutral, or basic compositions depending on the operating environment;
• High-temperature and wear-resistant mixes with special additives for enhanced performance.