White corundum castable is a high-quality high-temperature refractory material, with high-purity alumina powder as the main raw material, and the impurity content is extremely low.
During the production process, a small amount of auxiliary materials such as flux and binder may be added to improve the performance and construction performance of the castable.
(1) Good high temperature stability
(2) Good structural density
(3) Strong wear resistance
(4) Good slag resistance
(5) High shock resistance
(6) Good corrosion resistance
(1) High temperature kiln
(2) Petroleum industry
(3) Fertilizer industry kiln
(4) Furnace resistant to high temperature
|
Brand Performance |
ZJ-1 |
ZJ-2 |
ZJ-18A |
ZJ-18HS |
ZJ-18H |
|
|
Chemical composition% |
Al2O3 |
≥98 |
≥95 |
≥95 |
≥95 |
≥95 |
|
SiO2 |
≤0.2 |
≤0.5 |
≤0.2 |
≤0.4 |
≤0.4 |
|
|
Maximum use degree℃ |
1850 |
1800 |
1800 |
1800 |
1800 |
|
|
Volume density after baking at 110℃ g/cm3 |
≥3.1 |
≥3.0 |
≥2.9 |
≥3.0 |
≥3.1 |
|
|
Line change after firing at 1500℃×3h% |
-0.2—0.6 |
-0.2—0.6 |
-0.2—07 |
0.1 — -0.3（1100℃） |
±0.5 |
|
|
Compressive/flexural strength MPa |
110℃×24h |
≥20/≥4 |
≥60/≥7 |
≥50/≥4 |
≥60≥8 |
≥70/≥7 |
|
1100℃×3h |
≥50/≥6 |
≥70/≥8 |
...... |
≥70/≥9 |
≥80/≥10 |
|
|
1500℃×3h |
≥60/≥10 |
≥100/≥15 |
≥100/≥15 |
≥120/≥10 |
≥150/≥15 |
|
|
Maximum particle size mm |
5-6 |
5-6 |
5-6 |
3 |
5-6 |
|
|
Construction water consumption% (weight ratio) |
5-6.5 |
5-6.5 |
5-6 |
5-6 |
5-6 |
|
|
Inspection standard brick |
YB/T5202-2003 |
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Highland Refractory classifies White Corundum Castable based on alumina (Al₂O₃) content and application scenarios to meet diverse high-temperature precision needs, including Standard White Corundum Castable (Al₂O₃: 90-95%, suitable for medium-wear high-temperature zones like ceramic kiln shelves), High-Purity White Corundum Castable (Al₂O₃: ≥95%, ideal for ultra-clean environments such as electronic component sintering furnaces), and Low-Cement White Corundum Castable (cement content ≤3%, designed for low-heat-release scenarios like glass kiln throat linings); each type of White Corundum Castable is formulated with adjusted particle gradation and binding systems, ensuring it adapts to specific construction methods—such as self-flowing for complex shapes or vibratable for high-density requirements—and performs reliably in targeted harsh conditions.
Highland’s White Corundum Castable stands out in high-temperature precision applications with core strengths: it boasts ultra-high purity (low SiO₂, Fe₂O₃ impurities), which prevents unwanted chemical reactions with molten materials or corrosive media, making it ideal for clean production environments; it exhibits exceptional wear resistance and compressive strength (≥180MPa at room temperature), maintaining structural integrity even in high-impact zones like furnace feed ports; it also features excellent thermal shock resistance, withstanding rapid temperature changes (20-1100℃ water quenching ≥15 times) without cracking—these advantages make White Corundum Castable a top choice for extending the service life of high-precision, high-wear industrial equipment.
White Corundum Castable is widely used across sectors that demand purity, wear resistance, and high-temperature stability: in the ceramic industry, it lines kiln shelves and firing chambers, resisting ceramic glaze corrosion and high-temperature deformation; in the electronic industry, it forms linings for semiconductor sintering furnaces, ensuring no impurity contamination of sensitive components; in the metallurgical industry, it serves as tundish linings for high-purity alloy casting, withstanding molten metal erosion; in the glass industry, it protects glass kiln throat sections and regenerator grids, enduring glass melt corrosion and thermal cycling—each application leverages White Corundum Castable’s ability to thrive in high-purity, high-stress environments.
White Corundum Castable (Highland) excels as a ready-to-use monolithic refractory material, pre-mixed with high-purity white corundum aggregates, fine powders, and low-cement binders—this allows it to be directly shaped into seamless, high-strength structures (like entire furnace linings or custom components) with ultra-high wear and corrosion resistance, making it ideal for high-precision, harsh high-temperature equipment. Refractory Cement, by contrast, is a specialized bonding material designed to adhere refractory bricks, aggregates, or small parts; it offers flexibility in on-site repairs and brick masonry, enabling precise bonding of prefabricated components in less demanding scenarios. Each product serves distinct roles: White Corundum Castable dominates custom, high-performance monolithic structures, while Refractory Cement leads in bonding and repair tasks.
Highland Refractory is a trusted producer of high-quality White Corundum Castable, backed by 30+ years of refractory expertise—we use high-purity fused white corundum (Al₂O₃ ≥99%) as raw material, adopt advanced mixing technologies to ensure uniform aggregate-powder distribution, and conduct strict quality tests (measuring purity, compressive strength, thermal shock resistance, and wear loss) for every batch. Each White Corundum Castable meets ISO 9001/CE standards, and we maintain an annual production capacity of 60,000 tons (covering various high-end refractories), serving 1,500+ clients across Asia, Africa, Europe, and Australia. Our technical team also tailors formulations to specific client needs (e.g., adjusting cement content for low-heat release), making us a reliable partner for White Corundum Castable solutions.
Choosing Highland Refractory for your White Corundum Castable needs means accessing tailored support and consistent quality: we offer customization (adjusting White Corundum Castable’s purity, density, and setting time to match your equipment—e.g., self-flowing grades for narrow gaps or high-purity grades for electronic furnaces), fast delivery (3–7 days for standard types in stock, 10–15 days for custom formulations), and bulk discounts (5–10% off orders ≥ 8 tons). We also provide free samples, detailed quality inspection reports, and 24/7 technical guidance (advising on mixing ratios, curing processes, and installation), ensuring your White Corundum Castable integrates seamlessly into projects and delivers long-term, high-performance results.
A: Yes, we do provide free samples of our standard White Corundum Castable. You only need to bear the shipping cost to your address. For customized White Corundum Castable samples, there might be a small charge, but it will be refunded if you place a substantial order later.
A: If the White Corundum Castable you ordered is our standard stock item, you can expect delivery within 3 - 7 days. For customized products with specific requirements like higher purity or special performance features, it will take 10 - 15 days as we'll need additional time for production and quality checks. For large - scale bulk orders, we'll work with you to set an appropriate delivery schedule.
A: We take great care in packaging White Corundum Castable. It is first sealed in moisture - proof bags to prevent any moisture absorption which could affect its properties. Then these bags are placed in sturdy steel drums or reinforced wooden crates depending on the quantity. The containers are clearly labeled with handling instructions such as "Keep Dry", "Handle with Care" and product details.
A: We accept T/T (Telegraphic Transfer) and PayPal for payments. Just like our other products, full payment is required before we dispatch the White Corundum Castable. We're constantly exploring other payment options to make it more convenient for our customers.
A: Certainly. Every batch of White Corundum Castable we produce goes through strict quality control. You'll receive a comprehensive quality inspection report that includes details about its chemical composition, physical properties such as density and strength, and its performance under high - temperature conditions.
A: We're sorry to hear if the White Corundum Castable you received is damaged. Please contact our customer service right away and provide us with photos and detailed descriptions of the damage. We'll promptly arrange to replace the damaged product with a new, intact batch at no extra cost to you.
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