Barite is naturally-occurring barium sulphate that is utilised primarily for its high density, in addition to chemical inertness and relative softness.
Graphite is an allotrope of carbon and is grey to black, opaque, very soft, has a low density and a metallic lustre. It is flexible and exhibits both non-metallic and metallic properties, making it suitable for diverse industrial applications.
This article was written by Executive Consultant, Andrew Scogings. Bentonite is sometimes called the ‘mineral of a thousand uses’ and is characterised by properties such as its ability to swell in water, to act as a ‘natural glue’ or ‘bond’, special rheological properties when added to water (e.g. thixotropy), high surface area and exchangeable cations. These properties may be modified by treatment with acids, soda ash or other compounds such as polymers. Bentonite finds application across a wide range of markets including foundry (metal casting in sand moulds), clumping cat litter, iron ore pelletising, edible oil, wine and beverage purification, oil and other exploration drilling, civil engineering, animal feed and paper manufacture. Approximately 16 to 20 million tonnes of bentonite … Read More