What is the ladle breathable brick

Ladle air-permeable brick is a new product with long lifespan, energy saving and consumption reduction, with reasonable structure design, good thermal stability, erosion resistance, erosion resistance, and permeability resistance, high blow-through rate, safe and reliable operation, and long service life Wait a minute. Mainly used in steel-making ladle, base and other parts.

Development and use of corundum-spinel ladle breathable bricks for large-scale refined ladle: In order to meet the requirements of large-scale refined ladle for ladle breathable bricks, through technical means such as formula optimization and high-temperature firing, the performance and use results have been successfully developed. The corundum-spinel ladle breathable brick of the traditional chromium corundum ladle breathable brick. The ladle breathable brick is made of plate corundum as granular material, fused white corundum as fine powder, and added 6% pure calcium aluminate cement, 5 % Active α-Al2O3 micropowder and 8% spinel, plus appropriate amount of chromium oxide and water reducing agent, after vibration forming, drying, heat preservation at 1630°C for more than 3 hours. The ladle air-permeable brick is used on a large refined ladle to obtain To a satisfactory use of fruit.

The ladle bottom argon blowing ladle air-permeable brick adopts high-purity homogenized raw materials, the matrix is pre-co-milled and mixed, and some raw materials are directly imported from outside, reasonable allocation, and strictly controlled production in accordance with the international advanced technological requirements. The product has the advantages of high strength, erosion resistance, erosion resistance, penetration resistance, and long service life.

■Main physical and chemical indicators of the product: Al2O3% ≥95.0 Cr2O3% ≥3.0, apparent porosity: %≤16.0, bulk density: g/cm3 ≥3.20, normal temperature compressive strength: MPa 110°C ≥60.0, 1500°C ≥100.0, 1600°C ≥120.0. High temperature flexural strength: MPa 1400°C, 30min ≥10.0.

■Use part: bottom blow of ladle.

■Construction method: smear fire mud evenly on the surface, and the installation is stable.