Lev3 high alumina brick introduction

Lev3 high alumina brick is one of the common refractory materials, which are formed and calcined from bauxite or other raw materials with high alumina content.

Characteristics of grade 3 high alumina bricks

1. Chemical composition: AI203 content should be between 50% va 70%, Si02 content should be below 30%
2. Bulk density: should be above 2.20 g/cm’.
3. Apparent porosity: should be below 22%.
4. Normal temperature compressive strength: should be above 40MPa.
5. Load softening temperature: should be above 1350’C.
6. Thermal shock resistance: should be above 10 times.
7. Thermal expansion coefficient: should be below 5.0×10-6/C.

Application of Lev3 high alumina brick

• Used for lining blast furnaces, hot blast furnaces, electric furnace roofs, blast furnaces, reverberatory furnaces, and rotary furnaces.
• Refractory heat expansion rate is small, not easy to deform, neatly formed
• Carefully selected materials insist on quality first, preferred materials are durable
• The clay is very pure and fine, has high density, is not easy to wear on the surface, has high-temperature resistance, high compressive strength, high load softening temperature, high-temperature volume, stability, and deformation performance are excellent