Bentonite – Green Mineral Material, Empowering High-Performance Solutions for Multiple Industries

Bentonite is a natural clay mineral with montmorillonite as the core. With its unique layered crystal structure, it has composite properties such as expansion, adsorption, bonding, and thixotropy. It is non-toxic, environmentally friendly, and widely available. It has become a high-performance green material in petroleum, metallurgy, environmental protection, building materials and other industries, promoting the industry towards efficient, low-carbon and sustainable development.

1. Classification and Production: Product System Endowed by Natural Gifts and Empowered by Technology

• Classification by Properties

• - Calcium-based bentonite: Accounts for more than 80% of natural reserves, low cost and good plasticity, suitable for basic fields such as casting and metallurgy.
• - Sodium-based bentonite: Better performance, outstanding expansion, suspension and bonding capabilities, mostly used in drilling, high-end coatings and other scenarios.
• - Organic/modified bentonite: After surface modification, it is suitable for organic solvents, used in high-end coatings, rubber, plastics, etc., expanding the application boundary.

• Production Process

Natural bentonite mainly adopts physical processing, with the process of mining → crushing → grinding → purification → classification → finished products, retaining the natural structure of minerals; modified products add processes such as sodiumization, acidification, and organic coating, and realize performance customization through precise process control to meet the strict requirements of different industries.

2. Core Performance Highlights

• - Dynamic thixotropy and suspension stability: It shows the characteristics of "shear thinning and static thickening" in liquids. Drilling fluid and coatings have good fluidity during construction, and remain stable without sedimentation when stationary.
• - Strong adsorption and purification: It can efficiently adsorb heavy metal ions, organic pollutants, and odor molecules, used in wastewater treatment, air purification, etc., with significant purification effect.
• - High-temperature chemical stability: Resistant to high temperature of 300℃, acid and alkali resistance, aging resistance, maintaining stable performance under harsh working conditions, and extending the service life of products.
• - Green, non-toxic and safe: Natural mineral components, no harmful heavy metals and volatile substances, suitable for industrial, environmental protection and other fields.
• - Resource sustainability: Abundant natural reserves, recyclable, low processing energy consumption, in line with the trend of low-carbon and environmental protection development.

3. Cross-Industry Innovative Applications

High-End Industrial Manufacturing

• - Precision casting: Improve the strength and air permeability of molding sand, reduce casting defects, and adapt to the production of precision parts such as automobiles and aviation.
• - New material field: As a filler modifier for rubber and plastics, it improves material strength, heat resistance and aging resistance, and reduces production costs.

Environmental Protection and Ecological Fields

• - Soil remediation: Improve soil structure, adsorb heavy metals and pesticide residues, and enhance soil fertility and ecological safety.
• - Solid waste treatment: Used for sludge dewatering and garbage anti-seepage, reducing pollutant diffusion and helping the resource utilization of solid waste.

People's Livelihood and Special Fields

• - Cosmetics: Used as a cosmetic gelling agent, safe, mild and stable.

4.Selection Standards for High-Quality Bentonite

• 1. Core indicators: Montmorillonite content ≥85%, blue absorption ≥30g/100g, expansion multiple ≥25, to ensure basic performance.
• 2. Modification adaptability: Select the modification type according to the application scenario, such as organic modification for oil-based systems and sodiumization modification for water-based systems.
• 3. Purity and impurities: Low quartz and low carbonate impurities to avoid affecting product performance and processing stability.

5. Conclusion

• As a natural green mineral material, bentonite deeply empowers the upgrading of various industries with its diverse properties, environmental protection attributes and cost advantages. From traditional industry to emerging environmental protection and people's livelihood fields, its application scenarios continue to expand, becoming a key support for promoting the green and efficient development of the industry. Its market value and application potential will be further released in the future.