Calcined kaolin

Product Introduction

Calcined kaolin, a product offered by Kivi Chemicals, is a high-performance industrial mineral extensively utilized in the paints and coatings industry. This fine white powder is produced by the calcination of kaolin clay, resulting in improved physical and chemical properties, making it an essential ingredient in various coating formulations. In East Africa, where the demand for high-quality paints is on the rise, sourcing calcined kaolin from Kivi Chemicals ensures that manufacturers have access to a reliable and efficient filler that enhances the durability, opacity, and overall performance of their products. Its unique properties make it suitable for architectural coatings, industrial coatings, automotive paints, and paper coatings, meeting both local and international standards for industrial fillers.

Detailed Product Overview

Calcined kaolin, with the chemical formula Al2Si2O5(OH)4, is a refined form of kaolin clay that has been subjected to a high-temperature calcination process. This transformation results in a white fine powder with a molecular weight of 258.16 g/mol. The calcination process alters the clay's crystalline structure, enhancing its brightness and reducing its moisture content, which in turn improves its performance characteristics. The industrial-grade calcined kaolin offered by Kivi Industrial Chemicals Limited boasts a high purity of 99.0% minimum, making it highly effective in various formulations where dispersion and stability are critical. Its insolubility in water and specific physical properties make it a versatile additive, particularly in the paints and coatings industry. In industrial applications, calcined kaolin is primarily utilized in the paints and coatings sector, including architectural, industrial, and automotive paints, as well as paper coatings. Its role is crucial in enhancing the opacity and texture of coatings, providing a smooth and matte finish. It also contributes to the longevity and durability of the final product by improving the mechanical properties of the coatings. Due to its high oil absorption capacity, calcined kaolin can effectively control the viscosity of formulations, ensuring a consistent application. Its whiteness and fine particle size make it ideal for formulations requiring a high degree of purity and brightness, which are essential for aesthetic and functional performance. When procuring calcined kaolin, it is essential to verify the product's specifications to ensure compatibility with your specific application. Key attributes to check include its whiteness, which should be at least 85% minimum, and its bulk density, ranging from 0.5 to 0.8 g/cm³. The oil absorption capacity, listed as 30 to 50 g/100g, is also an important parameter as it affects the product's performance in formulations. Additionally, the moisture content should not exceed 1.0%, and the pH level in a 10% slurry should range between 5.5 and 7.5. These specifications ensure the calcined kaolin meets the stringent quality standards required for effective use in paints and coatings. For optimal handling and storage, calcined kaolin should be kept in a dry, cool environment to prevent moisture uptake, which could affect its performance. The product is typically packaged in 25 kg polypropylene bags, designed to protect it from contamination and moisture ingress during transit and storage. It is advisable to handle the product in a manner that minimizes dust generation, using appropriate personal protective equipment to ensure safety. Kivi Industrial Chemicals Limited ensures a reliable supply chain, providing consistent quality and timely delivery to meet the demands of the East African market. Buyers should inspect the packaging upon arrival to ensure it remains intact and the product is in optimal condition.

Applications & Uses

Benefits & Advantages

Sourcing calcined kaolin from Kivi Chemicals offers numerous benefits for East African manufacturers. Its high purity ensures minimal impurities, leading to superior quality in finished products. The powder's excellent dispersibility allows for easy incorporation into various formulations, enhancing the overall performance of paints and coatings. Furthermore, calcined kaolin improves the durability and weather resistance of coatings, which is crucial in the East African climate. The cost-effectiveness of using this mineral as a filler reduces the overall production costs while maintaining high-quality standards. Buyers can rely on Kivi Chemicals for consistent supply and quality, ensuring that their products meet the demands of the market effectively.

Packaging & Bulk Supply

Kivi Chemicals offers calcined kaolin in convenient 25 kg polypropylene bags, ensuring easy handling and storage for manufacturers. This packaging is ideal for both small-scale and large-scale operations, allowing for flexibility in inventory management. Bulk supply options are also available to meet the demands of larger production runs, providing cost savings and efficiency for buyers.

Storage & Handling

Calcined kaolin should be stored in a cool, dry place, away from moisture and direct sunlight to maintain its quality. It is recommended to keep the product in its original packaging until use to prevent contamination. When handling, appropriate personal protective equipment (PPE) such as gloves and dust masks should be worn to avoid inhalation of dust and skin contact. Regular checks should be conducted to ensure the integrity of the storage facility and to prevent any potential degradation of the product.

External References & Further Reading

• PubChem Compound Summary