Corundum Refractory Ball
High mechanical strength, strong wear resistance, long service life. Used in abrasives, mechanical bearings, sandblasting processes, chemical equipment.
Al₂O₃:90-99%
Bulk Density:2.8-3.2g/cm³
Size:Ф6-Ф70
Corundum Refractory Ball Overview
Corundum Refractory Balls are ceramic spheres made mainly from high - purity alumina. They have a dense structure and high surface finish, and are widely used in industrial environments that require wear resistance, high - temperature resistance, and chemical corrosion resistance.
Features and Properties
- High Hardness and Wear Resistance: With a Mohs hardness of 9, they significantly extend the service life of equipment.
- Resistance to Extreme High Temperatures: They can work stably at temperatures above 1700℃ for a long time.
- Chemical Inertness: Resistant to acid and alkali corrosion, suitable for environments with strong chemical reagents.
- Electrical Insulation: Suitable for use in electronic devices and high - temperature electrical insulation scenarios.
Technical Specifications
| Performance Indicators / Products | 90 Series | 92 Series | 95 Series | 99 Series |
| Al₂O₃% | ≥ 90 | ≥ 92 | ≥ 95 | ≥ 99 |
| Fe₂O₃% | ≤ 0.3 | ≤ 0.25 | ≤ 0.15 | ≤ 0.1 |
| Water Absorption % | ≤ 0.8 | ≤ 0.8 | ≤ 0.8 | ≤ 0.8 |
| Bulk Density (g/cm³) | ≥ 2.8 | ≥ 3.0 | ≥ 3.1 | ≥ 3.2 |
| Packing Density (g/cm³) | ≥ 1.7 | ≥ 1.9 | ≥ 2.0 | ≤ 2.1 |
Industry Applications
- Abrasives Industry: Improve grinding efficiency and surface treatment quality.
- Mechanical Bearings: Reduce friction and enhance operational stability.
- Sandblasting Process: Maintain uniformity and durability under high - pressure spraying.
- Chemical Equipment: Anti - corrosion solutions for seals and pump bodies.
- Electronics Field: Insulating support materials for high - temperature micro - electronic devices.
Proven Global Projects
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Also Called:Silica Mullite Brick;
Al₂O₃:60-65%;
Bulk Density:≥2.55g/cm³;
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SiO₂:≥97%;
Bulk Density:≥1.86g/cm³;
Cold Crushing Strength:≥40MPa;
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Al₂O₃:≥45%;
Apparent Porosity:≤15%;
Cold Crushing Strength:≥50MPa;
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About XZK Group
Strengths
Innovation
R&D Team
Facilities
Honors
Product Portfolio
Specializing in premium zircon, corundum, sintered AZS, and monolithics. With a $70M+ annual output, we deliver durable linings for global high-temp industries.
Capacity
✔ 4 automated microcomputer batching systems.
✔ 4 ultra-high-temp tunnel kilns & 5 shuttle kilns.
✔ 20+ CNC hydraulic presses (630-1500T).
✔ Digitalized workshops with 100,000T annual capacity.
Beginning with professional consultation to accurately identify and address specific
requirements
One-to-one Service
We offer one-on-one dedicated sales and technical team services to perfectly solve any
refractory material problems you encounter
Professional Solution
The company has over 30 technical R&D personnel and can provide professional solutions based on
the on-site conditions of customers
Quality Management System
We have a strict quality management system to ensure the stability of the quality of each batch
of products.
Responsible After-sales Service
Our dedicated technical team will visit customers regularly and provide free lifetime
after-sales service
Contact Us
Email: market@xzkgroup.com
Phone/WhatsApp/Wechat: 0086 19059612888
Add: Micun Industrial Area, Xinmi City, Henan Province, China
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