Brown Corundum Sand

Product description

Brown fused alumina has been chosen as abrasive for hundreds of years and it is decided by its nature that there is no material which can replace its dominant position in the abrasive industry.The hardness of corundum is high, second only to diamond in nature. Among the thousands of materials used by people, corundum belongs to several kinds of superhard materials. It is a high-performance abrasive material engineered for precision and durability in demanding industrial applications. Composed of ≥95% aluminum oxide (Al₂O₃), this brown corundum sand is produced through an advanced electric arc furnace process, ensuring superior purity and consistency. This material is ideal for heavy-duty grinding, surface preparation, and refractory linings due to its exceptional thermal stability and mechanical strength. Brown fused alumina has a high melting point. It does not melt or deform at high temperature, and can maintain sufficient mechanical strength and hardness.On the chip surface of grinding, the temperature can often reach above 1000ºC. Under high temperature conditions, the excellent performance of corundum cannot be matched by other materials.

The angular grain structure of brown corundum sand provides aggressive cutting action, making it highly effective for fast material removal while reducing wear on equipment. Its resistance to thermal shock and chemical corrosion allows for prolonged use in harsh environments, including high-temperature furnaces and acidic or alkaline conditions.

Available in a wide range of grit sizes (F12-F220), brown corundum sand meets stringent industry standards for quality and performance. Each batch undergoes rigorous testing for hardness, density, and chemical composition to ensure reliability. Custom packaging options are available to suit specific industrial needs, from bulk shipments to pre-measured units for automated systems.

Product Specification

Product Advantages:

- Exceptional chemical stability (resists acids/alkalis even at 1000°C+)

- High-purity composition (≥99.2% Al₂O₃, ≤0.1% Fe₂O₃)

- Superior mechanical strength (bulk density ≥3.50 g/cm³)

Product characteristics：

The chemical properties of brown fused alumina are extremely stable, and it does not react with acid and base, and it is very unlikely to react with other materials. Even under high temperature, the chemical properties of brown fused alumina are stable, so it is not easy to react with the processed objects and will not cause the deterioration of the processed objects.

These excellent properties of brown corundum are determined by its main chemical composition -- -Al2O3. Only when the content of Al2O3 in corundum is above 94% can it possess these excellent properties. In addition, the titanium oxide in corundum will affect the toughness of corundum and play an important role in the coloration of corundum.Even small amounts of iron oxide and magnesium oxide promote the microcrystallization of corundum.Sodium oxide produces sodium aluminate which affects the quality of corundum.

The properties of brown corundum are related to the crystallization process, and different crystallization processes have different effects on the properties of corundum.Generally speaking, crystallized fine mechanical strength is high.

Quality Assurance:

- ISO 9001-certified production

- Batch-tested with lab reports available

- Waterproof wooden crate packaging

Applications:

Ideal for:

✓ Sandblasting ✓ Refractory materials ✓ Precision grinding

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