Magnesia Gunning mix

The Magnesia Gunning Mix represents a complete range of monolithic refractory solutions for steelmaking furnace maintenance and repair. Cavalry understands that steel producers need efficient, reliable materials for rapid furnace lining repair to minimize downtime and extend campaign life. These magnesia gunning mixes address these requirements through specialized formulations for specific applications and application methods.

Gunning mixes are applied pneumatically to refractory linings using specialized equipment, allowing rapid repair without furnace cooling. The material bonds to existing refractory surfaces, restoring lining thickness and protecting against further wear. This application method is particularly valuable for hot repairs where maintaining furnace temperature is critical for production efficiency. The proper grain size distribution ensures good flowability and adhesion during application.

The product range includes four magnesia gunning mixes for different applications. ZP-1 with 82% MgO and 0-3mm grain size is designed for converter applications requiring high magnesia content. ZP-2 with 85% MgO and 7% SiO₂ is formulated for EAF and ladle applications. ZP-3 with 75% MgO and 3% Cr₂O₃ provides enhanced corrosion resistance for RH furnace applications. ZP-4 with 68% MgO offers a balanced formulation for general RH furnace repair.

The magnesia burning mix (ZS-65) with 65% MgO and 10% CaO is designed for converter applications with ceramic bonding. The burning mix formulation provides good adhesion and strength development during furnace operation. The 0-7mm grain size supports application in various repair situations.

Three ceramic-bonded bulk materials support AOD and VOD furnace applications. ZKS-1 with 45% MgO and 35% CaO is formulated for furnace mouth applications with ceramic bonding. ZTC-1 with 80% MgO and 8% SiO₂ serves as furnace lining filler. ZDD-1 with 55% MgO and 30% CaO is designed for furnace bottom ramming applications with ceramic bonding.

Product highlights

Eight Specialized Formulations for Comprehensive Coverage
The magnesia gunning mix range includes eight specialized formulations: ZP-1 to ZP-4 gunning mixes, ZS-65 burning mix, and ZKS-1, ZTC-1, ZDD-1 bulk materials. Each formulation is optimized for specific applications including converters, EAFs, ladles, RH furnaces, and AOD/VOD furnaces.

Rapid Repair Capability
Gunning mixes are applied pneumatically for rapid furnace lining repair without cooling. This application method minimizes downtime and maintains production efficiency. The rapid repair capability supports extended campaign life and reduced maintenance costs.

High Magnesia Content for Slag Resistance
MgO content ranges from 45% to 85% across the product range. The high magnesia content provides excellent resistance to basic slag attack. Higher magnesia grades (ZP-1, ZP-2) offer maximum performance in aggressive steelmaking environments.

Optimized Grain Size Distribution
Grain sizes range from 0-3mm to 0-7mm for different application requirements. The proper grain size ensures good flowability and adhesion during pneumatic application. The optimized distribution supports dense, well-bonded repair layers.

Ceramic Bonding for Strength Development
Ceramic-bonded formulations (ZS-65, ZKS-1, ZTC-1, ZDD-1) develop strength through ceramic bonding during furnace operation. This bonding mechanism provides good adhesion and structural integrity at high temperatures. The ceramic bond supports reliable performance in demanding applications.

Specialized Formulations for Specific Applications
ZP-3 and ZP-4 include chromium oxide for enhanced RH furnace performance. ZKS-1 and ZDD-1 include calcium oxide for specialized AOD/VOD applications. ZS-65 includes carbon for improved performance in converter applications.

Versatile Application Methods
The product range supports various application methods including pneumatic gunning, ramming, and troweling. This versatility allows selection of the optimal application method for specific repair situations.

Proven Performance in Steelmaking
Magnesia gunning mixes have demonstrated reliable performance in steelmaking furnace repair applications worldwide. The proven track record provides confidence in performance and service life.