Overview
Bentonite powder is a naturally occurring clay material composed primarily of montmorillonite. The '382.5°C boiling point' specification indicates a particular grade processed for high-temperature stability. This characteristic makes it valuable for industrial applications where thermal resistance is required. Bentonite's unique properties stem from its layered silicate structure, which allows for significant water absorption and swelling. The material is mined in various locations worldwide and processed to achieve different grades suitable for specific industrial uses.
Physical and Chemical Properties
Bentonite powder with a boiling point of 382.5°C demonstrates exceptional thermal stability compared to standard grades. Its layered structure provides a large surface area (approximately 750 m²/g), contributing to its excellent adsorption capabilities. The material shows remarkable swelling properties, expanding up to 15 times its original volume when hydrated. Its thixotropic nature allows it to form stable gels that liquefy when agitated and solidify when at rest, making it particularly valuable in drilling applications.
Main Applications
In foundry operations, this bentonite grade serves as an essential binder for molding sands due to its high-temperature resistance. The metal casting industry relies on its ability to maintain structural integrity under extreme heat. The petroleum industry utilizes this material in drilling fluids where thermal stability is crucial. Other applications include waterproofing in construction, wastewater treatment for heavy metal removal, and as a binder in iron ore pelletizing processes.
Safety and Storage
While bentonite powder is generally non-toxic, inhalation of dust particles should be avoided. Proper ventilation and personal protective equipment (dust masks, goggles) are recommended during handling. Storage requires protection from moisture to prevent premature hydration. The powder should be kept in sealed containers or bags in a dry warehouse environment. Bulk storage silos should be equipped with moisture barriers and proper aeration systems.
B2B Procurement Guide
When sourcing bentonite powder with specific thermal properties, buyers should request certified test reports verifying the boiling point and swelling index. Consider the material's origin as different deposits yield varying mineral compositions. For large-volume purchases, negotiate pricing based on quantity tiers. Transportation costs significantly impact total procurement expenses due to the material's bulk density. Consider local suppliers or establish long-term contracts with reliable manufacturers to ensure consistent quality.
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