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Refractory-grade section sand typically contains 99.0% or higher Al₂O₃, with high-purity grades reaching 99.5%. Upper limits for Na₂O, Fe₂O₃, and SiO₂ vary by grade and application. High-density types maintain Al₂O₃ ≥99.00% while controlling total Na₂O+K₂O below 0.30%, with a guaranteed bulk density of ≥3.60 g/cm³.
White refractory section sand is supplied primarily as section sand, with companion fine powders, covering a complete size system from coarse aggregate to fine powder.
Common section sand sizes range from 0-1 mm to 8-12 mm, extendable to 15-30 mm for coarser grades; fine powders are mainly 180 to 325 mesh. Particle size distribution can be controlled to GB/T 2479 or customer requirements, with customized sizing available from selected producers.
Steelmaking (Core Application):
Ladle Castables and Ramming Mixes: Serve as aggregate to withstand molten steel erosion and high-temperature wear in ladle linings, electric furnace linings, and iron trough spray mixes, extending furnace campaign life.
Continuous Casting Components and Functional Parts: Long nozzles, submerged entry nozzles, slide gate plates, pocket blocks, and purging plugs. High-purity white fused alumina resists steel and slag attack without contaminating the steel, suitable for clean steel and special steel production.
Corundum Shaped Products: Corundum bricks, corundum-spinel bricks, corundum-mullite bricks, and corundum saggars.
Ceramics and Heat-Treatment Kilns:
Kiln Furniture: Corundum saggars, setters, kiln racks, and support plates for sintering electronic ceramics, structural ceramics, special ceramics, and powder metallurgy products. High purity prevents body contamination and minimizes high-temperature deformation.
Kiln Linings: Linings for shuttle kilns, pusher kilns, molybdenum wire furnaces, high-temperature tube furnaces, heat-treatment quenching furnaces, and brazing furnaces.
Petrochemical, Non-Ferrous, and Glass Industries:
Petrochemical and Coal Chemical: Linings for fluid catalytic cracking units, reformers, and gasifiers, resisting high-temperature flue gas, molten salt, and reducing media.
Non-Ferrous Metals: Linings for aluminum melting/holding furnaces and copper-zinc smelting furnaces, resisting molten non-ferrous metal attack.
Glass Industry: Checker bricks in glass tank regenerators and localized wear-resistant linings for specialty and optical glass production.
Other High-Temperature Applications:
Wear- and corrosion-resistant linings for cement rotary kiln transition zones and waste incineration/hazardous waste kilns; precast corundum refractory components; refractory coating aggregates; laboratory high-temperature crucibles and electric furnace linings.
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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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