Spalling-resistant high-alumina brick introduces ZrO₂ (3-6%) for transformation and microcrack toughening. Al₂O₃≥70%, thermal-shock stability ≥15 cycles, greatly improved resistance to structural spalling under frequent temperature cycling.
| Al₂O₃ Content | ≥70% |
|---|---|
| ZrO₂ Content | 3-6% |
| Thermal Shock (1100℃-water) | ≥ 15 cycles |
| CCS | ≥70 MPa |
Spalling-resistant high-alumina bricks introduce ZrO₂ (3-6%) into the high-alumina matrix: Al₂O₃ ≥70%, thermal shock stability ≥15 cycles, CCS ≥70 MPa. ZrO₂ phase transformation and microcrack toughening markedly improve thermal-shock and structural-spalling resistance under cement/lime kiln conditions with alkali vapor. It is Henan Songrui's professional solution to lining spalling.
Use for combined thermal-shock and alkali conditions; pair with spalling-resistant mortar for ideal effect. Ordinary high-alumina avoids extra cost where no thermal shock exists.
Lay with matching mortar, strict joint and expansion control; heat up steadily. Selection 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).
Spalling-resistant high-alumina brick improves thermal shock resistance with ZrO₂ addition:
ZrO₂ creates micro-crack toughening that absorbs thermal stress and prevents spalling under rapid temperature change.
Cement transition zones, reheating furnace walls, boiler burner zones with severe temperature swings.
About 1500℃, balancing thermal shock resistance and hot performance.
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