Products
Products
01 · Shaped Refractories for Rotary Kilns
JX Magnesia-Iron Composite Spinel Brick
- Code
- JXMF
- Grades
- JXMF-85A · JXMF-85B
- 100
- Thermal shock resistance (950℃ air quench) cycles ≥
- 1700
- Refractoriness under load T0.6 ℃ ≥
- 60
- Cold crushing strength MPa ≥
JXMF-85A
JXMF-85A
JXMF-85A
Our magnesia-iron composite spinel brick is made mainly from high-purity magnesia and fused iron-alumina spinel by high-pressure forming and high-temperature firing. Thanks to a special process the spinel in the product keeps a complete morphology; in service the brick is flexible and has strong coating-adhesion, and it effectively withstands the various complex stresses in the rotary kiln without damage. It is suitable for the burning zone of cement kilns.
Physical and chemical properties
| Property | JXMF-85A | JXMF-85B |
|---|---|---|
| MgO % ≥ | 85 | 82 |
| Fe₂O₃ % ≤ | 3-5 | 3-5 |
| Al₂O₃ % ≥ | 4-6 | 4.6 |
| SiO₂ % ≤ | 1.5 | 2.0 |
| Apparent porosity % ≤ | 17 | 18 |
| Bulk density g/cm³ ≥ | 2.95 | 2.90 |
| Cold crushing strength MPa ≥ | 60 | 55 |
| Refractoriness under load T0.6 ℃ ≥ | 1700 | 1600 |
| Thermal shock resistance (950℃ air quench) cycles ≥ | 100 | 80 |
| Thermal expansion (1400℃) % | 1.6 | 1.6 |
| Thermal conductivity (1000℃) W/m·K ≤ | 2.6 | 2.6 |
| Abrasion loss (cc) ≤ | 7.8 | 7.8 |
These data are average results of production samples; typical values must not be regarded as maximum or minimum values.
Where product data differ from the goods actually supplied, the specifications in the supply contract or the actual test data of the batch prevail.
Recommended position in cement rotary kilns
Per the recommended optimised configuration
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