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Tabular Corundum 325 Mesh for Refractory Materials

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Tabular Corundum 325 Mesh for Refractory Materials
Tabular corundum is a pure, fully sintered corundum produced without adding MgO, B2O3 or other additives. It has coarse, well-developed α-Al2O3 crystals, with an Al2O3 content above 99%. Its plate-like crystal structure, small pores and relatively high closed porosity provide high purity, good volume stability and very low reheating shrinkage. Refractory materials or castables made with it offer good thermal-shock stability and flexural strength after high-temperature treatment.

Product Specifications

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Tabular corundum is a pure, fully sintered corundum produced without adding MgO, B2O3 or other additives. It has coarse, well-developed α-Al2O3 crystals, with an Al2O3 content above 99%. Its plate-like crystal structure, small pores and relatively high closed porosity provide high purity, good volume stability and very low reheating shrinkage. Refractory materials or castables made with it offer good thermal-shock stability and flexural strength after high-temperature treatment.

Applications

Tabular corundum is widely used in refractory materials for steelmaking, foundry, petrochemical, porous plugs, ladle linings, castables, prefabricated parts and ceramics. It is a synthetic refractory raw material with high refractoriness, high hardness, good thermal-shock stability, corrosion resistance, abrasion resistance and stable performance.

As a refractory aggregate, tabular corundum can be combined with spinel, calcined and active alumina, and binders such as cement, clay or resin. High-purity corundum bricks made with it have low impurity content, high bulk density and good thermodynamic performance, helping them resist thermal, chemical and structural damage in gasification furnaces and other industrial furnaces.

Features

High refractoriness; high corrosion resistance; high erosion resistance; high thermal-shock stability; high strength and good toughness; stable chemical performance; resistance to alkaline slag, slag and molten iron; resistance to molten steel and good permeability.

Chemical and Physical Indicators

ItemValueItemValue
Al2O399.2%Na2O0.4%
SiO20.1%Fe2O30.05%
Specific gravity3.5 g/cm³Water absorption1.5%
Apparent porosity5%Particle sizes0–1, 1–3, 3–5, 5–8 mm; -100, -180, -200, -300, -325 mesh, or customized

Our Facilities

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  • 1773993031893525296293171200
  • 1773993031893525294871302144
  • 1789955364129206

FAQ

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Q1: Is your company a trading firm or a manufacturing plant? Where are your facilities located?
We are an export-oriented enterprise that integrates manufacturing and sales; we are not an intermediary. Our headquarters—handling international sales, order processing, documentation, and after-sales service—is located in the Liaocheng Economic and Technological Development Zone, serving as the hub for global client relations, order negotiations, and cross-border services. Our production facility is situated in Chiping District, Liaocheng City, and specializes in the R&D, smelting, processing, and testing of white fused alumina, brown fused alumina, and other fused alumina products. This allows us to manage the entire supply chain—from primary production and rigorous quality control to direct export.


Q2: What is your production capacity and supply capability? Can you ensure a stable, long-term supply?
Our production base in Chiping features mature production lines and comprehensive processing equipment, enabling large-scale, continuous manufacturing. We offer a stable supply of our full range of white fused alumina, brown fused alumina, and related fused alumina products. With ample inventory and well-organized production scheduling, we are fully equipped to handle bulk orders, recurring annual orders, and urgent requests during peak seasons, ensuring a reliable, long-term supply for our global clients.


Q3: What are your primary export products, and what are your core offerings?
Our core exports consist of three main series of fused alumina materials: brown fused alumina, white fused alumina, and other fused alumina products. We offer a comprehensive range of specifications and particle sizes that meet various international procurement standards. Brown fused alumina is our flagship product for cost-effective industrial abrasives and refractory raw materials; white fused alumina is designed for high-purity, high-precision grinding and polishing applications; and our broader fused alumina line serves high-end refractory, specialty ceramic, and precision abrasive tool sectors—covering the full spectrum of procurement needs across all market tiers.


Q4: What are the specific applications for these three types of fused alumina, and how should one choose the right product? 1. Brown Fused Alumina: Characterized by high toughness, excellent wear and impact resistance, and a strong price-performance ratio. It is suitable for general industrial applications such as metal sandblasting (rust removal), hardware grinding, the manufacturing of grinding wheels and sandpaper, metallurgical castable refractories, and lining materials for standard industrial furnaces. It serves as a versatile, all-purpose abrasive and refractory raw material.

2. White Fused Alumina: Features high purity, high hardness, and excellent self-sharpening properties, with a pure white appearance free from impurities. It is ideal for high-precision and high-cleanliness applications, including the polishing of precision molds, grinding of aerospace components, finishing of electronic materials, and the production of high-end refractory products and precision ceramics.

3. Fused Alumina (High-Purity/Specialized): Possesses a dense structure, exceptional thermal stability, and high resistance to both heat and corrosion. It serves as a core raw material for high-end, specialized refractories, structural ceramics, precision grinding media, and linings for high-temperature industrial kilns, making it well-suited for demanding, high-performance operating environments.

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