Round Saggar
High Alumina Brick SeriesHigh alumina round saggar made from premium high alumina bauxite, fired at high temperature. Widely used in high-temperature firing processes for ceramics and powder materials.
| Parameter | Specification |
|---|---|
| Material | High Alumina Bauxite |
| Max Service Temperature | 1500°C |
| Bulk Density | ≥2.4 g/cm³ |
| Cold Crushing Strength | ≥60 MPa |
| Al₂O₃ Content | ≥65% |
Material Introduction
High alumina bricks and clay bricks share similar production processes, with the key difference being the alumina content. High alumina bricks refer to neutral refractory materials with an alumina content above 48%. They are made from bauxite or other raw materials with high alumina content through forming and calcination. With high thermal stability, typically at 1500-1600°C, and good slag resistance, they are used for lining steel electric furnaces, glass melting furnaces, cement rotary kilns, and more.
Based on Al₂O₃ content, high alumina bricks can be classified into different grades: Grade I (Al₂O₃ content >75%), Grade II (Al₂O₃ content 60-75%), and Grade III (Al₂O₃ content 48-60%).
Product Features
- Premium high alumina bauxite raw material with low impurity content
- Round design for more uniform heating
- Good thermal shock resistance for long cycling life
- Smooth inner wall for easy demolding and cleaning
- Customizable sizes available
Specification Parameters
| Index | SK35 / LZ-48 | SK36 / LZ-55 | SK37 / LZ-65 | SK38 / LZ-75 | SK40 / LZ-80 |
|---|---|---|---|---|---|
| Al₂O₃ (%) | ≥ 48 | ≥ 55 | ≥ 65 | ≥ 75 | ≥ 80 |
| Fe₂O₃ (%) | ≤ 2 | ≤ 2 | ≤ 2 | ≤ 2 | ≤ 2 |
| Refractoriness (℃) | 1750 | 1770 | 1790 | 1790 | 1800 |
| Apparent Porosity (%) | ≤ 22 | ≤ 22 | ≤ 23 | ≤ 23 | ≤ 22 |
| Bulk Density (g/cm³) | 2.25-2.35 | 2.25-2.35 | 2.25-2.35 | 2.45-2.55 | 2.55-2.65 |
| Cold Crushing Strength (MPa) | ≥ 39 | ≥ 44 | ≥ 49 | ≥ 54 | ≥ 59 |
| Refractoriness Under Load 0.2MPa (℃) | ≥ 1420 | ≥ 1470 | ≥ 1500 | ≥ 1510 | ≥ 1530 |
| Permanent Linear Change 1500℃×2h (%) | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 | +0.1~-0.4 |
