Natural Fireclay Powder — 100 Mesh | Low-Iron Siliceous (5 kg Bag)

Natural Fireclay Powder 100 Mesh – Low-Iron Siliceous Refractory Material

Natural Fireclay Powder – 100 Mesh is a finely processed refractory clay powder designed for high-performance industrial and construction applications. Its low-iron and siliceous composition provides reliable purity, consistency, and excellent material performance. The 100 mesh fine particle size ensures smooth blending, uniform distribution, and easy incorporation into formulations. This versatile fireclay powder offers good heat resistance, making it suitable for refractory and high-temperature applications. It can be used in refractory bricks, castables, furnace linings, fire cement, foundry applications, and ceramic formulations. The material provides excellent thermal stability and contributes to durable, heat-resistant finished products. Its natural mineral composition supports dependable processing and consistent results across various industrial uses. Ideal for manufacturers seeking low-iron fireclay, refractory clay, and siliceous clay powder for demanding applications. Choose Natural Fireclay Powder 100 Mesh for dependable quality, efficient processing, and durable high-temperature performance.

This is a naturally Siliceous fireclay characterized by low iron content and high silica-alumina ratio, making it well suited for applications where minimal fluxing, light coloration, and thermal stability are required — including foundry work, ceramics, and low-to-medium heat-duty refractory products.

 Every batch is backed by an independent, ISO/IEC 17025-accredited laboratory analysis (XRF + Loss on Ignition), giving buyers verifiable composition data rather than nominal specifications.

 Certified Composition (XRF Analysis)

 SiO₂ (Silica): 69.48%.

Al₂O₃ (Alumina): 18.32%. 

Fe₂O₃ (Iron Oxide): 0.99%.

TiO₂ (Titanium Oxide): 1.84%.

K₂O:0.51%.

MgO: 0.15%.

CaO: 0.02%.

Loss on Ignition (1000°C): 8.88%

Other trace oxides (BaO, Cr₂O₃, MnO, Na₂O, P₂O₅, SO₃, ZrO₂, etc.) Each <0.1%.

 Key Selling Points 

 Key Selling Points

1. Low iron oxide (<1%) — reduces unwanted fluxing/slagging in kiln and furnace use, and supports a lighter fired color, both valued in ceramics and refractory mixes.

2. High silica content (69.48%) — contributes thermal stability and mechanical strength to composite mixes.

3. Fine, uniform particle size (100 mesh) — ready for direct blending into mortars, bodies, and mixes without further milling.

4. Independently verified analysis — 22-element XRF profile with quality control duplicates and certified reference material checks, from an accredited lab.

5. Natural, single-source material — consistent mineralogy from one deposit, supporting reliable repeat-order quality.

Note: this grade is best matched to low-to-medium heat-duty and general industrial fireclay applications. Buyers requiring super-duty refractory brick certification should request Pyrometric Cone Equivalent (PCE) testing, available on request.*