Phosphate-bonded high-alumina brick (Al₂O₃≥75%, refractoriness ≥1770℃) avoids high-temperature firing for energy saving, hardening further in service as temperature rises. Cost-effective with good thermal-shock resistance.
| Al₂O₃ Content | ≥75% |
|---|---|
| Refractoriness | ≥1770℃ |
| Bulk Density | ≥2.70 g/cm³ |
| CCS | ≥65 MPa |
Phosphate-bonded high-alumina bricks use bauxite chamotte with a phosphate bond, unfired (or lightly fired): Al₂O₃ ≥75%, refractoriness ≥1770℃ and bulk density ≥2.70 g/cm³. No high-temperature firing is needed—energy-saving; strength grows in service as the bond hardens with temperature. It is Henan Songrui's professional grade for cement kiln transition zones and kiln-mouth erosion areas.
Phosphate-bonded grade suits temperature-cycling, abrasive zones without reliance on high-temperature firing; burned high-alumina or mullite bricks are better for long stable high-temperature service.
Lay with phosphate mortar; store moisture-proof; control joints and heat up steadily. Construction guidance available.
Henan Songrui New Refractory Materials Co., Ltd. (Xuanhua Town Industrial Park, Henan) is a 2024 Class A taxpayer and SRDI SME. For selection, quotation or installation, contact Manager Zheng (17513376789 / 17513376789@163.com).
Phosphate-bonded high-alumina brick is unburned and economical:
Phosphate chemical bonding avoids high-temperature firing, cutting cost significantly.
Kiln hoods, coolers, reheating furnace walls, flues up to 1400℃.
About 1400℃; hot strength lower than fired bricks, not for strong slag zones.
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