Introduction
The 95% alumina ceramic liner is a high-end, wear-resistant, and refractory ceramic product made from high-purity powder, with an alumina (Al₂O₃) content of ≥95% as the primary raw material, combined with small amounts of high-performance sintering aids. It is manufactured through processes such as batching, forming, high-temperature sintering (with a sintering temperature of up to 1600°C or higher), and precision machining.
Compared to the 92% alumina ceramic liner, it offers higher purity, better density, and superior wear resistance and mechanical strength. It is primarily suited for industrial applications with high loads, severe wear, and strong corrosion, and is widely used to protect key equipment in industries such as cement, metallurgy, mining, and thermal power.
Physical And Chemical Specifications
| Al₂O₃(%) | 95±0.5 |
| ZrO₂(%) | |
| Flexural Strength (MPa) |
＞280 |
| Fracture Toughness | ＞3.9 |
| Rockwell Hardness (HRA) | ＞88 |
| Wear Volume (cm³) | ＜0.3 |
| Density (g/cm³) | ＞3.7 |
Advantage
1.Ultra-high Wear Resistance
The increased alumina purity leads to higher density and hardness. Its wear-resistant lifespan is 1.5–2 times that of conventional 92% alumina liners and 20–30 times that of carbon steel liners, enabling it to withstand continuous impact and grinding from high-hardness materials effectively.
2.Excellent Mechanical Strength
The dense crystalline structure formed by high-temperature sintering gives the liner ultra-high compressive and flexural strength. It is resistant to fragmentation or spalling under heavy-load and high-frequency impact conditions, and its stability greatly exceeds that of medium- and low-purity alumina liners.
3.Superior Temperature and Corrosion Resistance
It can operate stably in high-temperature environments up to 400°C for extended periods, and its thermal shock resistance is better than that of 92% alumina liners. Additionally, it is resistant to corrosion from weak acids, weak alkalis, and various industrial dust media, making it suitable for complex and harsh production environments.
4.Lightweight and Easy Installation
With a density about one-third that of steel, it does not add extra load to the equipment. It supports multiple installation methods, such as adhesive bonding and bolt-pressure plate fixation, to meet the installation requirements of various types of equipment.
5.Cost-effective High-end Option
Although its cost is slightly higher than that of 92% alumina liners, it can significantly reduce equipment maintenance frequency and downtime under high-wear conditions, leading to lower overall costs during long-term use.
Application
Cement Industry: Lining for vertical cement mills, roller presses, and separators, as well as wear-resistant protection for clinker-conveying pipelines and large silos.
Metallurgical Industry: Lining for blast furnace coal injection pipelines, sinter-conveying chutes, and dedusting pipelines of steelmaking converters.
Mining Industry: Lining for ore crushers and ball mills, along with protective layers for high-hardness ore-conveying pipelines and classification equipment.
Thermal Power Industry: Wear-resistant and corrosion-resistant lining for coal mill outlet pipelines, fly ash conveying systems, and desulfurization and denitrification equipment.
Installation and Usage Precautions
Before installation, clean any oil stains, rust, and impurities from the surface of the equipment substrate to ensure it is flat and dry, which will enhance bonding strength.
When bonding with special high-temperature-resistant adhesives, ensure the glue coating is applied evenly, avoiding air bubbles. For heavy-load impact conditions, it is recommended to use the dual fixation method with bolts and pressure plates.
Avoid using the liner in extreme conditions, such as ultra-high temperatures (above 400°C) or severe thermal cycling, to prevent cracking due to thermal stress.
Hot Tags: 95% alumina ceramic liner, China 95% alumina ceramic liner manufacturers, suppliers, factory