Micro-expansion high-alumina brick (Al₂O₃≥75%, PLC 0.2-0.6% at 1500℃) expands slightly at temperature to compensate joint shrinkage, improving lining integrity and preventing gas/slag leakage.
| Al₂O₃ Content | ≥75% |
|---|---|
| LE (1500℃) | 0.2-0.6% |
| CCS | ≥70 MPa |
| RUL (0.2MPa) | ≥1550℃ |
Micro-expansion high-alumina bricks expand slightly at high temperature: Al₂O₃ ≥75%, linear expansion 0.2-0.6% (1500℃), load softening point ≥1550℃. The controlled expansion compensates joint shrinkage, improving lining tightness against gas/slag leakage, with spalling and loosening resistance. It is Henan Songrui's dedicated grade for cement kiln transition and decomposition zones.
Use where joint shrinkage compensation and tightness matter; adjust expansion joint allowance to avoid excessive stress. Match with micro-expansion mortar for ideal results.
Lay with matching mortar, expansion joints per design; heat up steadily. Design and installation 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).
Micro-expansion high-alumina brick expands slightly at temperature to seal joints:
Expands slightly at temperature to fill joints, improving masonry integrity and gas tightness for roofs and sealed furnaces.
Transition/burning zones and kiln hoods, preventing loose linings and gas leakage.
Expansion is controlled (typically 0.5-1.0% linear) with expansion joints provided—no over-expansion damage.
Submit an inquiry or custom requirement for this product; reply within 24 hours
High-alumina brick LZ-55 (Al₂O₃≥55%) with refractoriness ≥1770℃ offers dense structure, wear resistance against gas scouring and combined cold/hot strength—one of the most widely used shaped refractories.
High-alumina brick LZ-65 (Al₂O₃≥65%, refractoriness ≥1790℃) has a higher corundum/mullite phase ratio for stronger slag resistance, higher temperature rating and better hot load-bearing capacity.
Low-creep high-alumina brick with Al₂O₃≥75% and creep rate ≤0.8% (1550℃×50h), RUL ≥1550℃. Minimal deformation under long-term hot load, engineered for load-bearing hot stove domes and walls.
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.
WeChat · 17513376789