The core advantages of this high whiteness calcined kaolin lie in its precise calcination process control and strict particle size grading. Compared with ordinary kaolin, it has lower iron oxide content (only 0.08%) which avoids yellowing of ceramic products during firing. Its optimized oil absorption value and bulk density ensure good dispersion in ceramic billet slurry, reducing the risk of slurry stratification during production. The product also meets the environmental protection requirements of most countries, with no harmful substances released during use, making it suitable for food-contact ceramic products.
The detailed specifications are as follows: calcination temperature 1200±50℃, particle size D50 12μm, whiteness (ISO 2470) 92%, loss on ignition 0.8%, SiO2 content 48.5%, Al2O3 content 37.2%, Fe2O3 content 0.08%, Mohs hardness 2.5, bulk density 0.65g/cm³, water content 0.2%, oil absorption 38g/100g. All parameters are tested in accordance with national and international standard detection methods, ensuring the stability and consistency of product performance across batches.
This product is mainly applicable to the following scenarios: daily-use ceramic products such as tableware, tea sets and sanitary ware; architectural ceramics including wall tiles, floor tiles and decorative panels; special ceramics such as electronic ceramic substrates and high-temperature resistant ceramic parts. It can also be used in the production of high-grade ceramic crafts, helping enterprises improve product quality and production efficiency while reducing production costs.
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