site logo

Sliding nozzle for ladle

Sliding nozzle for ladle

The skateboard is based on alumina raw materials such as tabular corundum, fused corundum, mullite, super alumina, etc. as the main raw materials, introducing carbon materials such as phosphorus flake graphite, carbon black, pitch, activated carbon, etc., and adding a small amount of other materials Such as metal silicon, metal aluminum, silicon carbide, boron carbide, etc., using phenolic resin as a bonding agent, through batching, mixing, high-pressure molding, high-temperature treatment, and then processing. The product has good strength, good thermal shock stability, corrosion resistance and erosion resistance, and can meet the requirements of different steel grades.

Grade ZX-HB2 ZX-HA-70 ZX-HA-76 ZX-HA-85 ZX-HAZ-75
AL2O 3%  ≥ 76 70 76 85 75
C        %  ≥ 7 7 7 5 7
ZrO2      %  ≥ 6
MgO    %  ≥
Apparent porosity  %  ≤ 4(10) 6 6(12) 6(10) 6(10)
Bulk density    ≥ 2.90 2.85 2.90 3.00 3.05
Compressive strength at room temperature

MPa  ≥

80 90 100 120 120
High temperature flexural strength

MPa(1400 ℃×0.5 h)≥

8 10 12 13 14
Use the way Small and medium ladle Ladles above 50t Ladles above 50t Ladles above 100t Tundish three-layer skateboard