A: Bentonite is classified by its dominant exchangeable cation. The two main commercial types are sodium bentonite  high-swelling, used in drilling mud, geosynthetic clay liners, foundry binders, and cat litter — and calcium bentonite, which has a lower swelling capacity and is widely used in animal feed, pelletising, and oil refining. Beyond natural types, bentonite can also be acid-activated to produce bleaching earth, used primarily in refining edible and industrial oils.

A: For oil well drilling, we supply API-grade sodium bentonite STARBENT API 13A Section 9 and Section 11 meeting international drilling fluid specifications. For foundry and metal casting, our STARBOND range provides high-swelling sodium bentonite used as a binding agent in green sand moulding. For iron ore pelletizing, our STARIOP range acts as a binder to convert iron ore fines into pellets for blast furnaces and DRI plants.

A: Yes. Star Bentonite Exports has been exporting premium-grade bentonite for over four decades and currently supplies to more than 30 countries across the Middle East, Far East Asia, Europe, the Americas, Africa, and Oceania. Our 32-acre integrated processing complex in Gandhidham is located just 45 km from major ports, enabling cost-effective bulk and packaged shipments worldwide. We also hold the Trading House Certificate from the Government of India.

A: Yes. Star Bentonite Exports is the flagship company of the Star Group  what began as a single bentonite venture has grown into a group of companies, each focused on a distinct area of mineral expertise. Star Bentonite Exports is the parent company, responsible for mining, processing, and globally exporting premium-grade bentonite. Star Foundry Additives serves the metal casting industry with high-quality green sand additives including sodium clay and coal blends. Star Claytech Pvt Ltd produces acid-activated bleaching earth under the StarBrite® brand for edible oil refining, with an annual capacity of 18,000 MT. Together, the Star Group delivers end-to-end mineral solutions across industries worldwide.