Bentonite

Bentonite clay has been used for thousands of years as both an internal and external purification aid. The Egyptians used it to preserve their famous mummies. The ancient Greeks and Romans used it to restore health. The great German naturopaths of the last century hailed clay as one of nature's great remedies. Numerous so-called primitive tribes have used clay for both internal and external purification. The American Indians were evidently the first to use Bentonite for its adsorptive properties. According to one Indian legend, a deposit of natural clay of miraculous medicinal qualities was used by the medicine men in the Bighorn Mountains of Wyoming and Montana. The Indians called this clay "ee-wah-kee," meaning "the mud that heals" (H.H. Tiffany, written commun., 1966). The early pioneers used Bentonite from outcrops called "soap holes" to wash their clothes and to lubricate their wagon wheels (Thorson, undated).
Iranians have known Bentonite and its characteristics since far pasts and used Bentonite as mud shampoo, clay soap and etc. Nowadays Iran has manyBentonite mines and has a great ability to supply Bentonite into other countries. Iran's Bentonites are famous because of their stunning characteristics. It's Marjan Mineral Company's honor that can provide all necessary communications for Bentonite exporting.

Bentonite Usages:

Bentonite has high swelling properties along with good viscosity and liquid limit. These properties are highly valued in most of the industrial applications. Sodium bentonite is well suited as a binder in the preparation of pellets and in foundry and as oilwell drilling mud. Bentonite also acts as a suspending agent in oil well drilling fluids. Bentonite exhibits good green strength along with high hot and dry strength which helps in preventing moulds from breaking or cracking during the pouring or cooling process in the foundry industry. Owing to high green strength resulting from its property to absorb and then release moisture, bentonite is used in iron ore pelletisation. Sodium-based bentonite of 75 micron size finds suitability in iron ore pelletisation for bonding by user industries. Bentonite clay is also used in pyrotechnics, to make end plugs and rocket engine nozzles.
Applications for Bentonite include:

• Drilling: Owing to its rheological properties and thixotropy of aqueous suspensions, bentonite is used as a mud constituent for oil and water well drilling. Its functions are mainly to stabilise the borehole, seal the borehole walls, and remove drill cuttings.Bentonite muds are thus employed for oil and water well drilling, tunnel, and microtunnel drilling.
• Foundry: Bentonite is used as a bonding material in the preparation of moulding sand for the production of cast iron, steel, and non-ferrous casting. The unique properties of bentonite yield green sand moulds with good flowability, compactability, and thermal stability for the production of high quality castings. Read more . . .