High Purity Calcined Kaolin
Calcined Kaolin Powder is a highly refined mineral product obtained by heating natural kaolin at controlled temperatures to enhance its physical and chemical properties. This process improves whiteness, brightness, and hardness while reducing moisture and impurities. Widely used across industries, it offers excellent opacity, superior dispersion, and enhanced performance in coatings, plastics, rubber, and ceramics. Its consistent particle size distribution ensures smooth application and improved end-product quality.
Manufactured with precision, our calcined kaolin delivers reliable performance, making it an ideal choice for industrial applications demanding purity, durability, and uniformity.
- Properties
- Application
- Chemical Composition
Some of the key properties of Calcined Kaolin Powder include:
- Appearance: Fine white powder
- Particle Size: 2 microns median
- Specific Gravity: 2.6–2.7
- Refractive Index: 1.6–1.62
- Mohs Hardness: 2–2.5
- pH Value: 6.0–7.5
- Oil Absorption: 50–60 g/100g
- Brightness: 93–95
- Loss on Ignition: 12–14%
- Moisture Content: 0.5% max.
Calcined Kaolin Powder is widely valued across multiple industries due to its exceptional physical and chemical properties. Some of its key applications include:
- Ceramics: Extensively used in the manufacturing of porcelain, sanitary ware, and tableware, it enhances strength, whiteness, and translucency in ceramic products.
- Paints and Coatings: Used as a functional filler and pigment extender in paints and coatings to improve opacity, brightness, durability, and resistance to abrasion and weather conditions.
- Plastics and Rubber: Acts as a reinforcing filler in plastic and rubber applications, improving tensile strength, elongation, and wear resistance.
- Paper and Packaging: Widely used as a coating pigment in the paper industry to enhance gloss, smoothness, print quality, strength, and stiffness of paper and paperboard products.
- Adhesives and Sealants: Incorporated as a filler in adhesives and sealants to improve bonding strength, flexibility, and overall performance.
- Cosmetics: Commonly used in cosmetic formulations such as face powders, foundations, and eye shadows to provide smooth texture, softness, and opacity.
- Pharmaceuticals: Utilized as an excipient in pharmaceutical products to improve flowability, compressibility, and dissolution properties, while also serving as a coating material for tablets and capsules.
- Construction Materials: Used in cement, concrete, plaster, and related construction products to enhance strength, workability, and long-term durability.
Kaolin primarily consists of the clay mineral kaolinite, with the chemical formula Al₂Si₂O₅(OH)₄. Depending on the source and processing method, it may also contain smaller quantities of other minerals and naturally occurring compounds.