Magnesia Aluminum Spinel Brick for Rotary Kiln

1.Product Description of magnesia aluminum spinel brick

The magnesia aluminum spinel brick is made of good synthetic spinel raw materials and special processes. The product has the characteristics of high compressive strength, good thermal shock stability, good thermal creep performance, and high load softening temperature. At the same time, it also has the characteristics that the magnesia chrome bricks are easy to stick to the kiln skin, which solves the problem that the magnesia chrome bricks used in cement kilns generate potassium hexachrome which pollutes the environment.

2.Features of magnesia aluminum spinel brick

1. High fire resistance, usually above 2000 ° C.

2. Due to poor high temperature strength, the fire resistance under load is about 1500-1550 ° C.

3. It has strong resistance to alkaline (alkaline) slag and cannot contact with acidic refractory materials.

4. Poor thermal shock resistance and stable furnace temperature.

5. The volume stability is poor under high temperature, and proper expansion joints must be reserved during bricklaying.

6. It has strong thermal conductivity and sometimes needs insulating materials.

7. Moisturizing property to keep the product away from moisture during storage.

3. Parameters of magnesia aluminum spinel brick

ItemsIndex
MgO,  %≥82
Al2O3  %13-15
Fe2O3  %≤0.8
Bulk Density,(g/cm3)≥2.98
Apparent Porosity,  %≤17
Cold Crushing Strength,  MPa≥60
Refractoriness Under Load, °C, [0.2MPa×0.6%]≥1700
Thermal Shock Resistance, Times,  [1100°C, water-cooling]≥15
Refractoriness, °C≥1800

4. Application of magnesia aluminum spinel brick

  1. Iron and steel industry
    Steelmaking furnace lining, ferroalloy furnace lining, metal mixed furnace lining, converter lining, electric arc furnace wall and bottom, immersion furnace, heating furnace bottom
  2. Non ferrous metallurgical industry
    Copper, nickel, lead, zinc, tin smelting furnace lining, refined copper reverberatory furnace lining, ore electric furnace lining
  3. Glass industry
    Glass furnace accumulator inspector
  4. Building materials industry
    Lime kiln, cement kiln
  5. Refractory industry
    High temperature calcining kiln, vertical kiln and tunnel kiln