ブラウン・コランダム
Brown corundum, also called brown fused alumina, is a tough, high-performance abrasive mineral produced by fusing high-quality bauxite in an electric arc furnace. Valued for its exceptional toughness, self-sharpening properties, and cost-effectiveness, it is widely used in grinding, blasting, and refractory applications across heavy industrial sectors.
What Is Brown fused alumina?
Brown fused alumina (BFA) is a synthetic abrasive mineral produced by fusing high-purity bauxite, iron filings, and other additives in an electric arc furnace at temperatures exceeding 2000°C. The result is a dense, hard, and highly durable crystalline material composed primarily of aluminum oxide (Al₂O₃), typically ranging from 94% to 97% purity.
Its characteristic brown color comes from the presence of titanium oxide (TiO₂) and other trace elements retained during the smelting process. These elements contribute to its notable toughness and self-sharpening characteristics — properties that set it apart from other fused alumina types.
Available in a wide range of grain sizes, from coarse macro grits to fine micro powders, brown fused alumina is one of the most widely used abrasive and refractory raw materials in the world. It serves as a foundational material across metalworking, construction, surface treatment, and high-temperature industrial processes.
Why Choose Brown Fused Alumina?
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Cost-Effective Performance : Brown fused alumina delivers excellent abrasive performance at a competitive price point. Its high hardness (Mohs 9) and durability make it a practical, long-lasting solution for high-volume grinding and blasting operations without compromising output quality.
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Superior Toughness & Self-Sharpening Properties: Unlike more brittle abrasives, BFA fractures in a controlled manner during use, continuously exposing fresh, sharp cutting edges. This self-sharpening behavior maintains consistent cutting efficiency throughout the abrasive's working life.
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Broad Application Compatibility: From bonded and coated abrasives to refractory castables and surface blasting, brown fused alumina performs reliably across diverse industrial applications. Its compatibility with various bonding systems and formulations makes it highly adaptable to different production requirements.
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Excellent Thermal Resistance:With a melting point above 2000°C and strong resistance to thermal shock, BFA is widely trusted in refractory linings, kiln furniture, and high-temperature furnace applications where material stability under extreme heat is non-negotiable.
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Consistent, Reliable Quality: Produced under controlled smelting and grading processes, brown fused alumina offers stable chemical composition and uniform particle size distribution — ensuring predictable, repeatable performance across every production batch.
業界が直面する課題
原材料の品質のばらつき
Strict Grain Size Control
High Energy Consumption
Dust & Environmental Compliance
製品概要
アルミナ
BCO-F-CON/G100
アルミナ
BCO-F-AUT/G300
Why Use Our Brown fused alumina
High Hardness & Durable Cutting Performance
With a Mohs hardness of 9, brown fused alumina delivers aggressive, reliable cutting action across tough materials. Its hardness ensures extended abrasive life, reduced media consumption, and consistent grinding efficiency in both heavy-duty and precision machining operations.
Outstanding Toughness & Self-Sharpening Ability
Brown fused alumina fractures predictably under pressure, continuously revealing sharp new cutting edges. This self-sharpening characteristic maintains stable abrasive performance throughout its working life, making it especially effective in grinding wheels and coated abrasive applications.
Cost-Effective for High-Volume Operations
Derived from abundantly available bauxite, brown fused alumina offers an excellent performance-to-cost ratio. Its durability and long service life significantly lower per-unit processing costs, making it the go-to abrasive choice for large-scale industrial production environments.
関連アプリケーション
業界別ソリューション
梱包・物流サービス
安全でカスタマイズ可能な梱包
製品は、輸送中の清潔さと完全性を確保するため、耐久性があり防湿性のあるパウチまたはバルク容器に収納されるものとします。特殊なサイズや取り扱い要件に合わせた、カスタマイズされた梱包オプションもご用意しています。.
信頼性が高く、柔軟なグローバル配送
信頼できる物流パートナーと連携し、海上、航空、陸路の各輸送手段に対応した柔軟な配送体制を提供しています。世界中の目的地へ、迅速かつ安全に貨物を配送いたします。.
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